[#3 ] policy: Introduce policy contract interface wrapper

Signed-off-by: Airat Arifullin <aarifullin@yadro.com>
2023-12-06 12:25:57 +03:00
35 changed files with 374 additions and 3100 deletions
--- a/.forgejo/workflows/dco.yml
+++ b/.forgejo/workflows/dco.yml
@ -16,6 +16,6 @@ jobs:
          go-version: '1.21'

      - name: Run commit format checker
-        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v3
+        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v2
        with:
          from: 'origin/${{ github.event.pull_request.base.ref }}'
--- a/.gitattributes
+++ b/.gitattributes
@ -1,4 +1,2 @@
 /**/*.pb.go -diff -merge
 /**/*.pb.go linguist-generated=true
-/**/*_easyjson.go -diff -merge
-/**/*_easyjson.go linguist-generated=true
--- a/14
+++ b/14
@ -5,8 +5,6 @@ TMP_DIR := .cache
 OUTPUT_LINT_DIR ?= $(shell pwd)/bin
 LINT_VERSION ?= 1.55.1
 LINT_DIR = $(OUTPUT_LINT_DIR)/golangci-lint-$(LINT_VERSION)-v$(TRUECLOUDLAB_LINT_VERSION)
-EASYJSON_VERSION ?= $(shell go list -f '{{.Version}}' -m github.com/mailru/easyjson)
-EASYJSON_DIR ?= $(shell pwd)/bin/easyjson-$(EASYJSON_VERSION)

 # Run all code formatters
 fmts: fmt imports
@ -62,15 +60,3 @@ staticcheck-install:
 # Run staticcheck
 staticcheck-run:
 	@staticcheck ./...
-
-easyjson-install:
-	@rm -rf $(EASYJSON_DIR)
-	@mkdir -p $(EASYJSON_DIR)
-	@GOBIN=$(EASYJSON_DIR) go install github.com/mailru/easyjson/...@$(EASYJSON_VERSION)
-
-generate:
-	@if [ ! -d "$(EASYJSON_DIR)" ]; then \
-		make easyjson-install; \
-	fi
-	find ./ -name "_easyjson.go" -exec rm -rf {} \;
-	$(EASYJSON_DIR)/easyjson ./pkg/chain/chain.go
--- a/docs/resource.md
+++ b/docs/resource.md
@ -1,20 +0,0 @@
-# Resource
-
-From the point of the access policy engine, a resource is an object to which a request is being performed.
-This can be an object in a container within a namespace, or all objects in a container,
-or all containers within the root namespace etc.
-
-A resource can be viewed from two sides:
- - As part of a [request](../pkg/resource/resource.go). In this case a resource has a name and properties.
- - As part of rule [chain](../pkg/chain/chain.go): a resource has just a name.
-
-## Resource name
-
-A resource name must have a such format that can be processed by a chain router that matches a request
-either with local overrides or with rules within policy contract to get if this request is allowed to be performed.
-The main idea of this format is for the chain router to match by full name (`native:object//cnrID/objID`) or
-wildcard (`native:object//cnrID/*`).
-
-Check out formats that are defined in the schema: [native formats](../schema/native/consts.go), [s3 formats](../schema/s3/consts.go).
-You should validate a resource name using [util](../schema/native/util/validation.go) before instantiating a request or
-before putting it to either to local override storage or the policy contract storage.
--- a/go.mod
+++ b/go.mod
@ -3,33 +3,26 @@ module git.frostfs.info/TrueCloudLab/policy-engine
 go 1.20

 require (
-	git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.0
-	github.com/google/uuid v1.3.1
-	github.com/mailru/easyjson v0.7.7
-	github.com/nspcc-dev/neo-go v0.105.0
+	git.frostfs.info/TrueCloudLab/frostfs-contract v0.18.1-0.20231129062201-a1b61d394958
+	github.com/mr-tron/base58 v1.2.0
+	github.com/nspcc-dev/neo-go v0.103.0
 	github.com/stretchr/testify v1.8.4
-	golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63
+)
+
+require (
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/hashicorp/golang-lru v0.6.0 // indirect
+	github.com/nspcc-dev/go-ordered-json v0.0.0-20220111165707-25110be27d22 // indirect
+	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20231020160724-c3955f87d1b5 // indirect
+	github.com/nspcc-dev/rfc6979 v0.2.0 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/sync v0.3.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
 )

 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
-	github.com/golang/snappy v0.0.1 // indirect
-	github.com/hashicorp/golang-lru v0.6.0 // indirect
-	github.com/josharian/intern v1.0.0 // indirect
-	github.com/mr-tron/base58 v1.2.0 // indirect
-	github.com/nspcc-dev/go-ordered-json v0.0.0-20231123160306-3374ff1e7a3c // indirect
-	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20231127165613-b35f351f0ba0 // indirect
-	github.com/nspcc-dev/rfc6979 v0.2.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/syndtr/goleveldb v1.0.1-0.20210305035536-64b5b1c73954 // indirect
-	github.com/twmb/murmur3 v1.1.5 // indirect
-	go.etcd.io/bbolt v1.3.8 // indirect
-	go.uber.org/multierr v1.10.0 // indirect
-	go.uber.org/zap v1.26.0 // indirect
-	golang.org/x/crypto v0.17.0 // indirect
-	golang.org/x/sync v0.3.0 // indirect
-	golang.org/x/sys v0.15.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -1,141 +1,43 @@
-git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.0 h1:FzurjElUwC7InY9v5rzXReKbfBL5yRJKSWJPq6BKhH0=
-git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.0/go.mod h1:F/fe1OoIDKr5Bz99q4sriuHDuf3aZefZy9ZsCqEtgxc=
-github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
-github.com/bits-and-blooms/bitset v1.8.0 h1:FD+XqgOZDUxxZ8hzoBFuV9+cGWY9CslN6d5MS5JVb4c=
-github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
-github.com/consensys/bavard v0.1.13 h1:oLhMLOFGTLdlda/kma4VOJazblc7IM5y5QPd2A/YjhQ=
-github.com/consensys/gnark-crypto v0.12.2-0.20231013160410-1f65e75b6dfb h1:f0BMgIjhZy4lSRHCXFbQst85f5agZAjtDMixQqBWNpc=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
+git.frostfs.info/TrueCloudLab/frostfs-contract v0.18.1-0.20231129062201-a1b61d394958 h1:X9yPizADIhD3K/gdKVCthlAnf9aQ3UJJGnZgIwwixRQ=
+git.frostfs.info/TrueCloudLab/frostfs-contract v0.18.1-0.20231129062201-a1b61d394958/go.mod h1:rQWdsG18NaiFvkJpMguJev913KD/yleHaniRBkUyt0o=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 h1:YLtO71vCjJRCBcrPMtQ9nqBsqpA1m5sE92cU+pd5Mcc=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs=
-github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
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-github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
-github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/uuid v1.3.1 h1:KjJaJ9iWZ3jOFZIf1Lqf4laDRCasjl0BCmnEGxkdLb4=
-github.com/google/uuid v1.3.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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 github.com/hashicorp/golang-lru v0.6.0/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
-github.com/holiman/uint256 v1.2.0 h1:gpSYcPLWGv4sG43I2mVLiDZCNDh/EpGjSk8tmtxitHM=
-github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
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-github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
-github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
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-github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20231127165613-b35f351f0ba0/go.mod h1:J/Mk6+nKeKSW4wygkZQFLQ6SkLOSGX5Ga0RuuuktEag=
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 github.com/virtuald/go-ordered-json v0.0.0-20170621173500-b18e6e673d74 h1:JwtAtbp7r/7QSyGz8mKUbYJBg2+6Cd7OjM8o/GNOcVo=
 github.com/virtuald/go-ordered-json v0.0.0-20170621173500-b18e6e673d74/go.mod h1:RmMWU37GKR2s6pgrIEB4ixgpVCt/cf7dnJv3fuH1J1c=
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-golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.17.0 h1:r8bRNjWL3GshPW3gkd+RpvzWrZAwPS49OmTGZ/uhM4k=
-golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
-golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63 h1:m64FZMko/V45gv0bNmrNYoDEq8U5YUhetc9cBWKS1TQ=
-golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63/go.mod h1:0v4NqG35kSWCMzLaMeX+IQrlSnVE/bqGSyC2cz/9Le8=
-golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
-golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+go.etcd.io/bbolt v1.3.7 h1:j+zJOnnEjF/kyHlDDgGnVL/AIqIJPq8UoB2GSNfkUfQ=
+golang.org/x/crypto v0.14.0 h1:wBqGXzWJW6m1XrIKlAH0Hs1JJ7+9KBwnIO8v66Q9cHc=
+golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
 golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
-golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
-golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
-golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.12.1-0.20230815132531-74c255bcf846 h1:Vve/L0v7CXXuxUmaMGIEK/dEeq7uiqb5qBgQrZzIE7E=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
-google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
-google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
-google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
-google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
-google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
+golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
+golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
-gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-rsc.io/tmplfunc v0.0.3 h1:53XFQh69AfOa8Tw0Jm7t+GV7KZhOi6jzsCzTtKbMvzU=
--- a/iam/converter.go
+++ b/iam/converter.go
@ -50,16 +50,12 @@ const (
 	CondArnLike      string = "ArnLike"
 	CondArnNotEquals string = "ArnNotEquals"
 	CondArnNotLike   string = "ArnNotLike"
-
-	// Custom condition operators.
-	CondSliceContains string = "SliceContains"
 )

 const (
 	arnIAMPrefix     = "arn:aws:iam::"
 	s3ResourcePrefix = "arn:aws:s3:::"
 	s3ActionPrefix   = "s3:"
-	iamActionPrefix  = "iam:"
 )

 var (
@ -71,9 +67,6 @@ var (

 	// ErrInvalidActionFormat occurs when action has unknown/unsupported format.
 	ErrInvalidActionFormat = errors.New("invalid action format")
-
-	// ErrActionsNotApplicable occurs when failed to convert any actions.
-	ErrActionsNotApplicable = errors.New("actions not applicable")
 )

 type formPrincipalConditionFunc func(string) chain.Condition
@ -197,8 +190,6 @@ func getConditionTypeAndConverter(op string) (chain.ConditionType, convertFuncti
 		return chain.CondStringLike, noConvertFunction, nil
 	case op == CondNotIPAddress:
 		return chain.CondStringNotLike, noConvertFunction, nil
-	case op == CondSliceContains:
-		return chain.CondSliceContains, noConvertFunction, nil
 	default:
 		return 0, nil, fmt.Errorf("unsupported condition operator: '%s'", op)
 	}
@ -252,38 +243,53 @@ func parsePrincipalAsIAMUser(principal string) (account string, user string, err
 	return account, user, nil
 }

-func validateResource(resource string) error {
+func parseResourceAsS3ARN(resource string) (bucket string, object string, err error) {
 	if resource == Wildcard {
-		return nil
+		return Wildcard, Wildcard, nil
 	}

-	if !strings.HasPrefix(resource, s3ResourcePrefix) && !strings.HasPrefix(resource, arnIAMPrefix) {
-		return ErrInvalidResourceFormat
+	if !strings.HasPrefix(resource, s3ResourcePrefix) {
+		return "", "", ErrInvalidResourceFormat
 	}

-	index := strings.IndexByte(resource, Wildcard[0])
-	if index != -1 && index != utf8.RuneCountInString(resource)-1 {
-		return ErrInvalidResourceFormat
+	// iam arn format arn:aws:s3:::<bucket-name>/<object-name>
+	s3Resource := strings.TrimPrefix(resource, s3ResourcePrefix)
+	sepIndex := strings.Index(s3Resource, "/")
+	if sepIndex < 0 {
+		return s3Resource, Wildcard, nil
 	}

-	return nil
+	bucket = s3Resource[:sepIndex]
+	object = s3Resource[sepIndex+1:]
+	if len(object) == 0 {
+		return bucket, Wildcard, nil
+	}
+
+	if bucket == Wildcard && object != Wildcard {
+		return "", "", ErrInvalidResourceFormat
+	}
+
+	return bucket, object, nil
 }

-func validateAction(action string) error {
+func parseActionAsS3Action(action string) (string, error) {
 	if action == Wildcard {
-		return nil
+		return Wildcard, nil
 	}

-	if !strings.HasPrefix(action, s3ActionPrefix) && !strings.HasPrefix(action, iamActionPrefix) {
-		return ErrInvalidActionFormat
+	if !strings.HasPrefix(action, s3ActionPrefix) {
+		return "", ErrInvalidActionFormat
 	}

-	index := strings.IndexByte(action, Wildcard[0])
-	if index != -1 && index != utf8.RuneCountInString(action)-1 {
-		return ErrInvalidActionFormat
+	// iam arn format :s3:<action-name>
+	s3Action := strings.TrimPrefix(action, s3ActionPrefix)
+
+	index := strings.IndexByte(s3Action, Wildcard[0])
+	if index != -1 && index != utf8.RuneCountInString(s3Action)-1 {
+		return "", ErrInvalidActionFormat
 	}

-	return nil
+	return s3Action, nil
 }

 func splitGroupedConditions(groupedConditions []GroupedConditions) [][]chain.Condition {
--- a/iam/converter_native.go
+++ b/iam/converter_native.go
@ -1,8 +1,8 @@
 package iam

 import (
+	"errors"
 	"fmt"
-	"strings"

 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
@ -10,61 +10,28 @@ import (

 const PropertyKeyFilePath = "FilePath"

-var supportedActionToNativeOpMap = map[string][]string{
-	supportedS3NativeActionDeleteObject: {native.MethodDeleteObject, native.MethodHeadObject},
-	supportedS3NativeActionHeadObject:   {native.MethodHeadObject},
-	supportedS3NativeActionGetObject:    {native.MethodGetObject, native.MethodHeadObject, native.MethodSearchObject, native.MethodRangeObject, native.MethodHashObject},
-	supportedS3NativeActionPutObject:    {native.MethodPutObject},
-	supportedS3NativeActionListBucket:   {native.MethodGetContainer, native.MethodGetObject, native.MethodHeadObject, native.MethodSearchObject, native.MethodRangeObject, native.MethodHashObject},
+// ErrActionsNotApplicable occurs when failed to convert any actions.
+var ErrActionsNotApplicable = errors.New("actions not applicable")

-	supportedS3NativeActionCreateBucket:    {native.MethodPutContainer},
-	supportedS3NativeActionDeleteBucket:    {native.MethodDeleteContainer},
-	supportedS3NativeActionListAllMyBucket: {native.MethodListContainers},
-	supportedS3NativeActionPutBucketACL:    {native.MethodSetContainerEACL},
-	supportedS3NativeActionGetBucketACL:    {native.MethodGetContainerEACL},
-}
-
-var containerNativeOperations = map[string]struct{}{
-	native.MethodPutContainer:     {},
-	native.MethodDeleteContainer:  {},
-	native.MethodGetContainer:     {},
-	native.MethodListContainers:   {},
-	native.MethodSetContainerEACL: {},
-	native.MethodGetContainerEACL: {},
-}
-
-var objectNativeOperations = map[string]struct{}{
-	native.MethodGetObject:    {},
-	native.MethodPutObject:    {},
-	native.MethodHeadObject:   {},
-	native.MethodDeleteObject: {},
-	native.MethodSearchObject: {},
-	native.MethodRangeObject:  {},
-	native.MethodHashObject:   {},
+var actionToOpMap = map[string][]string{
+	supportedS3ActionDeleteObject: {native.MethodDeleteObject},
+	supportedS3ActionGetObject:    {native.MethodGetObject, native.MethodHeadObject, native.MethodSearchObject, native.MethodRangeObject, native.MethodHashObject},
+	supportedS3ActionHeadObject:   {native.MethodHeadObject, native.MethodSearchObject, native.MethodRangeObject, native.MethodHashObject},
+	supportedS3ActionPutObject:    {native.MethodPutObject},
+	supportedS3ActionListBucket:   {native.MethodGetObject, native.MethodHeadObject, native.MethodSearchObject, native.MethodRangeObject, native.MethodHashObject},
 }

 const (
-	supportedS3NativeActionDeleteObject = "s3:DeleteObject"
-	supportedS3NativeActionGetObject    = "s3:GetObject"
-	supportedS3NativeActionHeadObject   = "s3:HeadObject"
-	supportedS3NativeActionPutObject    = "s3:PutObject"
-	supportedS3NativeActionListBucket   = "s3:ListBucket"
-
-	supportedS3NativeActionCreateBucket    = "s3:CreateBucket"
-	supportedS3NativeActionDeleteBucket    = "s3:DeleteBucket"
-	supportedS3NativeActionListAllMyBucket = "s3:ListAllMyBuckets"
-	supportedS3NativeActionPutBucketACL    = "s3:PutBucketAcl"
-	supportedS3NativeActionGetBucketACL    = "s3:GetBucketAcl"
+	supportedS3ActionDeleteObject = "DeleteObject"
+	supportedS3ActionGetObject    = "GetObject"
+	supportedS3ActionHeadObject   = "HeadObject"
+	supportedS3ActionPutObject    = "PutObject"
+	supportedS3ActionListBucket   = "ListBucket"
 )

 type NativeResolver interface {
 	GetUserKey(account, name string) (string, error)
-	GetBucketInfo(bucket string) (*BucketInfo, error)
-}
-
-type BucketInfo struct {
-	Namespace string
-	Container string
+	GetBucketCID(bucket string) (string, error)
 }

 func ConvertToNativeChain(p Policy, resolver NativeResolver) (*chain.Chain, error) {
@ -88,7 +55,7 @@ func ConvertToNativeChain(p Policy, resolver NativeResolver) (*chain.Chain, erro
 		}

 		resource, resourceInverted := statement.resource()
-		groupedResources, err := formNativeResourceNamesAndConditions(resource, resolver, getActionTypes(nativeActions))
+		groupedResources, err := formNativeResourceNamesAndConditions(resource, resolver)
 		if err != nil {
 			return nil, err
 		}
@ -107,12 +74,7 @@ func ConvertToNativeChain(p Policy, resolver NativeResolver) (*chain.Chain, erro
 		for _, groupedResource := range groupedResources {
 			for _, principal := range principals {
 				for _, conditions := range splitConditions {
-					var principalCondition []chain.Condition
-					if principal != Wildcard {
-						principalCondition = []chain.Condition{principalCondFn(principal)}
-					}
-
-					ruleConditions := append(principalCondition, groupedResource.Conditions...)
+					ruleConditions := append([]chain.Condition{principalCondFn(principal)}, groupedResource.Conditions...)

 					r := chain.Rule{
 						Status:  status,
@ -136,23 +98,6 @@ func ConvertToNativeChain(p Policy, resolver NativeResolver) (*chain.Chain, erro
 	return &engineChain, nil
 }

-func getActionTypes(nativeActions []string) ActionTypes {
-	var res ActionTypes
-	for _, action := range nativeActions {
-		if res.Object && res.Container {
-			break
-		}
-
-		_, isObj := objectNativeOperations[action]
-		_, isCnr := containerNativeOperations[action]
-
-		res.Object = isObj || action == Wildcard
-		res.Container = isCnr || action == Wildcard
-	}
-
-	return res
-}
-
 func getNativePrincipalsAndConditionFunc(statement Statement, resolver NativeResolver) ([]string, formPrincipalConditionFunc, error) {
 	var principals []string
 	var op chain.ConditionType
@ -210,67 +155,35 @@ type GroupedResources struct {
 	Conditions []chain.Condition
 }

-type ActionTypes struct {
-	Object    bool
-	Container bool
-}
-
-func formNativeResourceNamesAndConditions(names []string, resolver NativeResolver, actionTypes ActionTypes) ([]GroupedResources, error) {
-	if !actionTypes.Object && !actionTypes.Container {
-		return nil, ErrActionsNotApplicable
-	}
-
+func formNativeResourceNamesAndConditions(names []string, resolver NativeResolver) ([]GroupedResources, error) {
 	res := make([]GroupedResources, 0, len(names))

 	var combined []string

-	for _, resource := range names {
-		if err := validateResource(resource); err != nil {
-			return nil, err
-		}
-
-		if resource == Wildcard {
-			res = res[:0]
-			return append(res, formWildcardNativeResource(actionTypes)), nil
-		}
-
-		if !strings.HasPrefix(resource, s3ResourcePrefix) {
-			continue
-		}
-
-		var bkt, obj string
-		s3Resource := strings.TrimPrefix(resource, s3ResourcePrefix)
-		if s3Resource == Wildcard {
-			res = res[:0]
-			return append(res, formWildcardNativeResource(actionTypes)), nil
-		}
-
-		if sepIndex := strings.Index(s3Resource, "/"); sepIndex < 0 {
-			bkt = s3Resource
-		} else {
-			bkt = s3Resource[:sepIndex]
-			obj = s3Resource[sepIndex+1:]
-			if len(obj) == 0 {
-				obj = Wildcard
-			}
-		}
-
-		bktInfo, err := resolver.GetBucketInfo(bkt)
+	for i := range names {
+		bkt, obj, err := parseResourceAsS3ARN(names[i])
 		if err != nil {
 			return nil, err
 		}

-		if obj == Wildcard && actionTypes.Object { // this corresponds to arn:aws:s3:::BUCKET/ or arn:aws:s3:::BUCKET/*
-			combined = append(combined, fmt.Sprintf(native.ResourceFormatNamespaceContainerObjects, bktInfo.Namespace, bktInfo.Container))
-			continue
+		if bkt == Wildcard {
+			res = res[:0]
+			return append(res, GroupedResources{Names: []string{native.ResourceFormatAllObjects}}), nil
 		}
-		if obj == "" && actionTypes.Container { // this corresponds to arn:aws:s3:::BUCKET
-			combined = append(combined, fmt.Sprintf(native.ResourceFormatNamespaceContainer, bktInfo.Namespace, bktInfo.Container))
+
+		cnrID, err := resolver.GetBucketCID(bkt)
+		if err != nil {
+			return nil, err
+		}
+		resource := fmt.Sprintf(native.ResourceFormatRootContainerObjects, cnrID)
+
+		if obj == Wildcard {
+			combined = append(combined, resource)
 			continue
 		}

 		res = append(res, GroupedResources{
-			Names: []string{fmt.Sprintf(native.ResourceFormatNamespaceContainerObjects, bktInfo.Namespace, bktInfo.Container)},
+			Names: []string{resource},
 			Conditions: []chain.Condition{
 				{
 					Op:     chain.CondStringLike,
@ -289,18 +202,6 @@ func formNativeResourceNamesAndConditions(names []string, resolver NativeResolve
 	return res, nil
 }

-func formWildcardNativeResource(actionTypes ActionTypes) GroupedResources {
-	groupedNames := make([]string, 0, 2)
-	if actionTypes.Object {
-		groupedNames = append(groupedNames, native.ResourceFormatAllObjects)
-	}
-	if actionTypes.Container {
-		groupedNames = append(groupedNames, native.ResourceFormatAllContainers)
-	}
-
-	return GroupedResources{Names: groupedNames}
-}
-
 func formNativePrincipal(principal []string, resolver NativeResolver) ([]string, error) {
 	res := make([]string, len(principal))

@ -331,24 +232,15 @@ func formPrincipalKey(principal string, resolver NativeResolver) (string, error)
 func formNativeActionNames(names []string) ([]string, error) {
 	res := make([]string, 0, len(names))

-	for _, action := range names {
-		if err := validateAction(action); err != nil {
+	for i := range names {
+		action, err := parseActionAsS3Action(names[i])
+		if err != nil {
 			return nil, err
 		}
-
 		if action == Wildcard {
 			return []string{Wildcard}, nil
 		}
-
-		if !strings.HasPrefix(action, s3ActionPrefix) {
-			continue
-		}
-
-		if strings.TrimPrefix(action, s3ActionPrefix) == Wildcard {
-			return []string{Wildcard}, nil
-		}
-
-		res = append(res, supportedActionToNativeOpMap[action]...)
+		res = append(res, actionToOpMap[action]...)
 	}

 	return res, nil
--- a/iam/converter_s3.go
+++ b/iam/converter_s3.go
@ -7,76 +7,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/policy-engine/schema/s3"
 )

-var specialActionToS3OpMap = map[string][]string{
-	specialS3ActionsListAllMyBuckets:                 {"s3:ListBuckets"},
-	specialS3ActionsListBucket:                       {"s3:HeadBucket", "s3:GetBucketLocation", "s3:ListObjectsV1", "s3:ListObjectsV2"},
-	specialS3ActionsListBucketVersions:               {"s3:ListBucketObjectVersions"},
-	specialS3ActionsListBucketMultipartUploads:       {"s3:ListMultipartUploads"},
-	specialS3ActionsGetBucketObjectLockConfiguration: {"s3:GetBucketObjectLockConfig"},
-	specialS3ActionsGetEncryptionConfiguration:       {"s3:GetBucketEncryption"},
-	specialS3ActionsGetLifecycleConfiguration:        {"s3:GetBucketLifecycle"},
-	specialS3ActionsGetBucketACL:                     {"s3:GetBucketACL"},
-	specialS3ActionsGetBucketCORS:                    {"s3:GetBucketCors"},
-	specialS3ActionsPutBucketTagging:                 {"s3:PutBucketTagging", "s3:DeleteBucketTagging"},
-	specialS3ActionsPutBucketObjectLockConfiguration: {"s3:PutBucketObjectLockConfig"},
-	specialS3ActionsPutEncryptionConfiguration:       {"s3:PutBucketEncryption", "s3:DeleteBucketEncryption"},
-	specialS3ActionsPutLifecycleConfiguration:        {"s3:PutBucketLifecycle", "s3:DeleteBucketLifecycle"},
-	specialS3ActionsPutBucketACL:                     {"s3:PutBucketACL"},
-	specialS3ActionsPutBucketCORS:                    {"s3:PutBucketCors", "s3:DeleteBucketCors"},
-	specialS3ActionsDeleteBucketCORS:                 {"s3:DeleteBucketCors"},
-
-	specialS3ActionsListMultipartUploadParts:   {"s3:ListParts"},
-	specialS3ActionsGetObjectACL:               {"s3:GetObjectACL"},
-	specialS3ActionsGetObject:                  {"s3:GetObject", "s3:HeadObject"},
-	specialS3ActionsGetObjectVersion:           {"s3:GetObject", "s3:HeadObject"},
-	specialS3ActionsGetObjectVersionACL:        {"s3:GetObjectACL"},
-	specialS3ActionsGetObjectVersionAttributes: {"s3:GetObjectAttributes"},
-	specialS3ActionsGetObjectVersionTagging:    {"s3:GetObjectTagging"},
-	specialS3ActionsPutObjectACL:               {"s3:PutObjectACL"},
-	specialS3ActionsPutObjectVersionACL:        {"s3:PutObjectACL"},
-	specialS3ActionsPutObjectVersionTagging:    {"s3:PutObjectTagging"},
-	specialS3ActionsPutObject: {
-		"s3:PutObject", "s3:PostObject", "s3:CopyObject",
-		"s3:UploadPart", "s3:UploadPartCopy", "s3:CreateMultipartUpload", "s3:CompleteMultipartUpload",
-	},
-	specialS3ActionsDeleteObjectVersionTagging: {"s3:DeleteObjectTagging"},
-	specialS3ActionsDeleteObject:               {"s3:DeleteObject", "s3:DeleteMultipleObjects"},
-	specialS3ActionsDeleteObjectVersion:        {"s3:DeleteObject", "s3:DeleteMultipleObjects"},
-}
-
-const (
-	specialS3ActionsListAllMyBuckets                 = "s3:ListAllMyBuckets"
-	specialS3ActionsListBucket                       = "s3:ListBucket"
-	specialS3ActionsListBucketVersions               = "s3:ListBucketVersions"
-	specialS3ActionsListBucketMultipartUploads       = "s3:ListBucketMultipartUploads"
-	specialS3ActionsGetBucketObjectLockConfiguration = "s3:GetBucketObjectLockConfiguration"
-	specialS3ActionsGetEncryptionConfiguration       = "s3:GetEncryptionConfiguration"
-	specialS3ActionsGetLifecycleConfiguration        = "s3:GetLifecycleConfiguration"
-	specialS3ActionsGetBucketACL                     = "s3:GetBucketAcl"
-	specialS3ActionsGetBucketCORS                    = "s3:GetBucketCORS"
-	specialS3ActionsPutBucketTagging                 = "s3:PutBucketTagging"
-	specialS3ActionsPutBucketObjectLockConfiguration = "s3:PutBucketObjectLockConfiguration"
-	specialS3ActionsPutEncryptionConfiguration       = "s3:PutEncryptionConfiguration"
-	specialS3ActionsPutLifecycleConfiguration        = "s3:PutLifecycleConfiguration"
-	specialS3ActionsPutBucketACL                     = "s3:PutBucketAcl"
-	specialS3ActionsPutBucketCORS                    = "s3:PutBucketCORS"
-	specialS3ActionsDeleteBucketCORS                 = "s3:DeleteBucketCORS"
-	specialS3ActionsListMultipartUploadParts         = "s3:ListMultipartUploadParts"
-	specialS3ActionsGetObjectACL                     = "s3:GetObjectAcl"
-	specialS3ActionsGetObject                        = "s3:GetObject"
-	specialS3ActionsGetObjectVersion                 = "s3:GetObjectVersion"
-	specialS3ActionsGetObjectVersionACL              = "s3:GetObjectVersionAcl"
-	specialS3ActionsGetObjectVersionAttributes       = "s3:GetObjectVersionAttributes"
-	specialS3ActionsGetObjectVersionTagging          = "s3:GetObjectVersionTagging"
-	specialS3ActionsPutObjectACL                     = "s3:PutObjectAcl"
-	specialS3ActionsPutObjectVersionACL              = "s3:PutObjectVersionAcl"
-	specialS3ActionsPutObjectVersionTagging          = "s3:PutObjectVersionTagging"
-	specialS3ActionsPutObject                        = "s3:PutObject"
-	specialS3ActionsDeleteObjectVersionTagging       = "s3:DeleteObjectVersionTagging"
-	specialS3ActionsDeleteObject                     = "s3:DeleteObject"
-	specialS3ActionsDeleteObjectVersion              = "s3:DeleteObjectVersion"
-)
-
 type S3Resolver interface {
 	GetUserAddress(account, user string) (string, error)
 }
@ -91,21 +21,19 @@ func ConvertToS3Chain(p Policy, resolver S3Resolver) (*chain.Chain, error) {
 	for _, statement := range p.Statement {
 		status := formStatus(statement)

-		actions, actionInverted := statement.action()
-		s3Actions, err := formS3ActionNames(actions)
+		action, actionInverted := statement.action()
+		s3Actions, err := formS3ActionNames(action)
 		if err != nil {
 			return nil, err
 		}
 		ruleAction := chain.Actions{Inverted: actionInverted, Names: s3Actions}
-		if len(ruleAction.Names) == 0 {
-			continue
-		}

-		resources, resourceInverted := statement.resource()
-		if err := validateS3ResourceNames(resources); err != nil {
+		resource, resourceInverted := statement.resource()
+		s3Resources, err := formS3ResourceNames(resource)
+		if err != nil {
 			return nil, err
 		}
-		ruleResource := chain.Resources{Inverted: resourceInverted, Names: resources}
+		ruleResource := chain.Resources{Inverted: resourceInverted, Names: s3Resources}

 		groupedConditions, err := convertToS3ChainCondition(statement.Conditions, resolver)
 		if err != nil {
@ -120,26 +48,17 @@ func ConvertToS3Chain(p Policy, resolver S3Resolver) (*chain.Chain, error) {

 		for _, principal := range principals {
 			for _, conditions := range splitConditions {
-				var principalCondition []chain.Condition
-				if principal != Wildcard {
-					principalCondition = []chain.Condition{principalCondFn(principal)}
-				}
-
 				r := chain.Rule{
 					Status:    status,
 					Actions:   ruleAction,
 					Resources: ruleResource,
-					Condition: append(principalCondition, conditions...),
+					Condition: append([]chain.Condition{principalCondFn(principal)}, conditions...),
 				}
 				engineChain.Rules = append(engineChain.Rules, r)
 			}
 		}
 	}

-	if len(engineChain.Rules) == 0 {
-		return nil, ErrActionsNotApplicable
-	}
-
 	return &engineChain, nil
 }

@ -222,32 +141,31 @@ func formPrincipalOwner(principal string, resolver S3Resolver) (string, error) {
 	return address, nil
 }

-func validateS3ResourceNames(names []string) error {
+func formS3ResourceNames(names []string) ([]string, error) {
+	res := make([]string, len(names))
 	for i := range names {
-		if err := validateResource(names[i]); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func formS3ActionNames(names []string) ([]string, error) {
-	res := make([]string, 0, len(names))
-
-	for _, action := range names {
-		if err := validateAction(action); err != nil {
+		bkt, obj, err := parseResourceAsS3ARN(names[i])
+		if err != nil {
 			return nil, err
 		}

-		if action == Wildcard {
-			return []string{Wildcard}, nil
+		if bkt == Wildcard {
+			res[i] = bkt
+			continue
 		}

-		if actions, ok := specialActionToS3OpMap[action]; ok {
-			res = append(res, actions...)
-		} else {
-			res = append(res, action)
+		res[i] = bkt + "/" + obj
+	}
+
+	return res, nil
+}
+
+func formS3ActionNames(names []string) ([]string, error) {
+	var err error
+	res := make([]string, len(names))
+	for i := range names {
+		if res[i], err = parseActionAsS3Action(names[i]); err != nil {
+			return nil, err
 		}
 	}

--- a/iam/converter_test.go
+++ b/iam/converter_test.go
@ -17,23 +17,22 @@ import (
 )

 type mockUserResolver struct {
-	users      map[string]string
-	containers map[string]string
-	namespace  string
+	users   map[string]string
+	buckets map[string]string
 }

-func newMockUserResolver(accountUsers []string, buckets []string, namespace string) *mockUserResolver {
+func newMockUserResolver(accountUsers []string, buckets []string) *mockUserResolver {
 	userMap := make(map[string]string, len(accountUsers))
 	for _, user := range accountUsers {
 		userMap[user] = user + "/resolvedValue"
 	}

-	containerMap := make(map[string]string, len(buckets))
+	bucketMap := make(map[string]string, len(buckets))
 	for _, bkt := range buckets {
-		containerMap[bkt] = bkt + "/resolvedValues"
+		bucketMap[bkt] = bkt + "/resolvedValues"
 	}

-	return &mockUserResolver{users: userMap, containers: containerMap, namespace: namespace}
+	return &mockUserResolver{users: userMap, buckets: bucketMap}
 }

 func (m *mockUserResolver) GetUserAddress(account, user string) (string, error) {
@ -54,13 +53,13 @@ func (m *mockUserResolver) GetUserKey(account, user string) (string, error) {
 	return key, nil
 }

-func (m *mockUserResolver) GetBucketInfo(bkt string) (*BucketInfo, error) {
-	cnr, ok := m.containers[bkt]
+func (m *mockUserResolver) GetBucketCID(bkt string) (string, error) {
+	cnrID, ok := m.buckets[bkt]
 	if !ok {
-		return nil, errors.New("not found")
+		return "", errors.New("not found")
 	}

-	return &BucketInfo{Container: cnr, Namespace: m.namespace}, nil
+	return cnrID, nil
 }

 func TestConverters(t *testing.T) {
@ -70,11 +69,10 @@ func TestConverters(t *testing.T) {
 	principal := "arn:aws:iam::" + namespace + ":user/" + userName
 	bktName := "DOC-EXAMPLE-BUCKET"
 	objName := "object-name"
-	resource := fmt.Sprintf(s3.ResourceFormatS3BucketObjects, bktName)
-	s3GetObjectAction := "s3:GetObject"
-	s3HeadObjectAction := "s3:HeadObject"
+	resource := bktName + "/*"
+	action := "PutObject"

-	mockResolver := newMockUserResolver([]string{user}, []string{bktName}, namespace)
+	mockResolver := newMockUserResolver([]string{user}, []string{bktName})

 	t.Run("valid policy", func(t *testing.T) {
 		p := Policy{
@ -84,8 +82,8 @@ func TestConverters(t *testing.T) {
 					AWSPrincipalType: {principal},
 				},
 				Effect:   AllowEffect,
-				Action:   []string{s3GetObjectAction},
-				Resource: []string{resource},
+				Action:   []string{"s3:PutObject"},
+				Resource: []string{"arn:aws:s3:::" + resource},
 				Conditions: map[string]Condition{
 					CondStringEquals: {
 						"s3:RequestObjectTag/Department": {"Finance"},
@ -97,7 +95,7 @@ func TestConverters(t *testing.T) {
 		expected := &chain.Chain{Rules: []chain.Rule{
 			{
 				Status:    chain.Allow,
-				Actions:   chain.Actions{Names: []string{s3GetObjectAction, s3HeadObjectAction}},
+				Actions:   chain.Actions{Names: []string{action}},
 				Resources: chain.Resources{Names: []string{resource}},
 				Condition: []chain.Condition{
 					{
@ -130,15 +128,15 @@ func TestConverters(t *testing.T) {
 				},
 				Effect:   AllowEffect,
 				Action:   []string{"s3:PutObject"},
-				Resource: []string{resource},
+				Resource: []string{"arn:aws:s3:::" + resource},
 			}},
 		}

 		expected := &chain.Chain{Rules: []chain.Rule{
 			{
 				Status:    chain.Allow,
-				Actions:   chain.Actions{Names: []string{native.MethodPutObject}},
-				Resources: chain.Resources{Names: []string{fmt.Sprintf(native.ResourceFormatNamespaceContainerObjects, namespace, mockResolver.containers[bktName])}},
+				Actions:   chain.Actions{Names: []string{action}},
+				Resources: chain.Resources{Names: []string{fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.buckets[bktName])}},
 				Condition: []chain.Condition{
 					{
 						Op:     chain.CondStringEquals,
@ -163,15 +161,15 @@ func TestConverters(t *testing.T) {
 					AWSPrincipalType: {principal},
 				},
 				Effect:      DenyEffect,
-				NotAction:   []string{s3GetObjectAction},
-				NotResource: []string{resource},
+				NotAction:   []string{"s3:PutObject"},
+				NotResource: []string{"arn:aws:s3:::" + resource},
 			}},
 		}

 		expected := &chain.Chain{Rules: []chain.Rule{
 			{
 				Status:    chain.AccessDenied,
-				Actions:   chain.Actions{Inverted: true, Names: []string{s3GetObjectAction, s3HeadObjectAction}},
+				Actions:   chain.Actions{Inverted: true, Names: []string{action}},
 				Resources: chain.Resources{Inverted: true, Names: []string{resource}},
 				Condition: []chain.Condition{
 					{
@ -189,28 +187,25 @@ func TestConverters(t *testing.T) {
 		require.Equal(t, expected, s3Chain)
 	})

-	t.Run("valid native policy map action", func(t *testing.T) {
+	t.Run("valid policy map get action", func(t *testing.T) {
 		p := Policy{
 			Version: "2012-10-17",
 			Statement: []Statement{{
 				Principal: map[PrincipalType][]string{
 					AWSPrincipalType: {principal},
 				},
-				Effect: DenyEffect,
-				Action: []string{"s3:DeleteObject", "s3:DeleteBucket"},
-				Resource: []string{
-					fmt.Sprintf(s3.ResourceFormatS3BucketObject, bktName, objName),
-					fmt.Sprintf(s3.ResourceFormatS3Bucket, bktName),
-				},
+				Effect:      DenyEffect,
+				NotAction:   []string{"s3:GetObject"},
+				NotResource: []string{"arn:aws:s3:::" + bktName + "/" + objName},
 			}},
 		}

 		expected := &chain.Chain{Rules: []chain.Rule{
 			{
 				Status:  chain.AccessDenied,
-				Actions: chain.Actions{Names: []string{native.MethodDeleteObject, native.MethodHeadObject, native.MethodDeleteContainer}},
-				Resources: chain.Resources{Names: []string{
-					fmt.Sprintf(native.ResourceFormatNamespaceContainerObjects, namespace, mockResolver.containers[bktName]),
+				Actions: chain.Actions{Inverted: true, Names: actionToOpMap["GetObject"]},
+				Resources: chain.Resources{Inverted: true, Names: []string{
+					fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.buckets[bktName]),
 				}},
 				Condition: []chain.Condition{
 					{
@ -227,19 +222,6 @@ func TestConverters(t *testing.T) {
 					},
 				},
 			},
-			{
-				Status:  chain.AccessDenied,
-				Actions: chain.Actions{Names: []string{native.MethodDeleteObject, native.MethodHeadObject, native.MethodDeleteContainer}},
-				Resources: chain.Resources{Names: []string{
-					fmt.Sprintf(native.ResourceFormatNamespaceContainer, namespace, mockResolver.containers[bktName]),
-				}},
-				Condition: []chain.Condition{{
-					Op:     chain.CondStringEquals,
-					Object: chain.ObjectRequest,
-					Key:    native.PropertyKeyActorPublicKey,
-					Value:  mockResolver.users[user],
-				}},
-			},
 		}}

 		nativeChain, err := ConvertToNativeChain(p, mockResolver)
@ -296,66 +278,6 @@ func TestConverters(t *testing.T) {
 		_, err := ConvertToNativeChain(p, mockResolver)
 		require.Error(t, err)
 	})
-
-	t.Run("invalid policy (missing s3 actions)", func(t *testing.T) {
-		p := Policy{
-			Version: "2012-10-17",
-			Statement: []Statement{{
-				Principal: map[PrincipalType][]string{
-					AWSPrincipalType: {principal},
-				},
-				Effect:   AllowEffect,
-				Resource: []string{"arn:aws:s3:::" + resource},
-			}},
-		}
-
-		_, err := ConvertToS3Chain(p, mockResolver)
-		require.Error(t, err)
-	})
-
-	t.Run("valid mixed iam/s3 actions", func(t *testing.T) {
-		p := Policy{
-			Version: "2012-10-17",
-			Statement: []Statement{{
-				Principal: map[PrincipalType][]string{AWSPrincipalType: {principal}},
-				Effect:    AllowEffect,
-				Action:    []string{"s3:DeleteObject", "iam:*"},
-				Resource:  []string{"*"},
-			}},
-		}
-
-		s3Expected := &chain.Chain{Rules: []chain.Rule{{
-			Status:    chain.Allow,
-			Actions:   chain.Actions{Names: []string{"s3:DeleteObject", "s3:DeleteMultipleObjects", "iam:*"}},
-			Resources: chain.Resources{Names: []string{"*"}},
-			Condition: []chain.Condition{{
-				Op:     chain.CondStringEquals,
-				Object: chain.ObjectRequest,
-				Key:    s3.PropertyKeyOwner,
-				Value:  mockResolver.users[user],
-			}},
-		}}}
-
-		s3Chain, err := ConvertToS3Chain(p, mockResolver)
-		require.NoError(t, err)
-		require.Equal(t, s3Expected, s3Chain)
-
-		nativeExpected := &chain.Chain{Rules: []chain.Rule{{
-			Status:    chain.Allow,
-			Actions:   chain.Actions{Names: []string{native.MethodDeleteObject, native.MethodHeadObject}},
-			Resources: chain.Resources{Names: []string{native.ResourceFormatAllObjects}},
-			Condition: []chain.Condition{{
-				Op:     chain.CondStringEquals,
-				Object: chain.ObjectRequest,
-				Key:    native.PropertyKeyActorPublicKey,
-				Value:  mockResolver.users[user],
-			}},
-		}}}
-
-		nativeChain, err := ConvertToNativeChain(p, mockResolver)
-		require.NoError(t, err)
-		require.Equal(t, nativeExpected, nativeChain)
-	})
 }

 func TestConvertToChainCondition(t *testing.T) {
@ -622,10 +544,10 @@ func TestComplexNativeConditions(t *testing.T) {
 	key1, key2 := "key1", "key2"
 	val0, val1, val2 := "val0", "val1", "val2"

-	mockResolver := newMockUserResolver([]string{user1, user2}, []string{bktName1, bktName2, bktName3}, "")
-	nativeResource1 := fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.containers[bktName1])
-	nativeResource2 := fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.containers[bktName2])
-	nativeResource3 := fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.containers[bktName3])
+	mockResolver := newMockUserResolver([]string{user1, user2}, []string{bktName1, bktName2, bktName3})
+	nativeResource1 := fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.buckets[bktName1])
+	nativeResource2 := fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.buckets[bktName2])
+	nativeResource3 := fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.buckets[bktName3])

 	p := Policy{
 		Version: "2012-10-17",
@ -644,7 +566,7 @@ func TestComplexNativeConditions(t *testing.T) {
 	}

 	expectedStatus := chain.AccessDenied
-	expectedActions := chain.Actions{Names: supportedActionToNativeOpMap["s3:"+action]}
+	expectedActions := chain.Actions{Names: actionToOpMap[action]}
 	expectedResource1 := chain.Resources{Names: []string{nativeResource1}}
 	expectedResource23 := chain.Resources{Names: []string{nativeResource2, nativeResource3}}

@ -761,7 +683,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket resource1, all conditions matched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName2], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName2], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: "any-object-name",
 			},
@ -775,7 +697,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket resource3, all conditions matched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName3], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName3], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: "any-object-name",
 			},
@ -789,7 +711,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket resource, user condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName2], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName2], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: "any-object-name",
 			},
@ -802,7 +724,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket resource, key2 condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName3], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName3], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: "any-object-name",
 			},
@ -816,7 +738,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket resource, key1 condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName2], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName2], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: "any-object-name",
 			},
@ -829,7 +751,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket/object resource, all conditions matched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName1], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName1], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: objName1,
 			},
@ -843,7 +765,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket/object resource, user condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName1], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName1], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: objName1,
 			},
@ -857,7 +779,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket/object resource, key1 condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName1], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName1], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: objName1,
 			},
@ -870,7 +792,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket/object resource, key2 condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName1], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName1], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: objName1,
 			},
@ -884,7 +806,7 @@ func TestComplexNativeConditions(t *testing.T) {
 		{
 			name:     "bucket/object resource, object filepath condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.containers[bktName1], "some-oid"),
+			resource: fmt.Sprintf(native.ResourceFormatRootContainerObject, mockResolver.buckets[bktName1], "some-oid"),
 			resourceMap: map[string]string{
 				PropertyKeyFilePath: "any-object-name",
 			},
@ -927,16 +849,15 @@ func TestComplexS3Conditions(t *testing.T) {
 	principal2 := "arn:aws:iam::" + namespace + ":user/" + userName2
 	bktName1, bktName2, bktName3 := "bktName", "bktName2", "bktName3"
 	objName1 := "objName1"
-	resource1 := fmt.Sprintf(s3.ResourceFormatS3BucketObject, bktName1, objName1)
-	resource2 := fmt.Sprintf(s3.ResourceFormatS3BucketObjects, bktName2)
-	resource3 := fmt.Sprintf(s3.ResourceFormatS3BucketObjects, bktName3)
-	action := "s3:DeleteObject"
-	action2 := "s3:DeleteMultipleObjects"
+	resource1 := bktName1 + "/" + objName1
+	resource2 := bktName2 + "/*"
+	resource3 := bktName3 + "/*"
+	action := "PutObject"

 	key1, key2 := "key1", "key2"
 	val0, val1, val2 := "val0", "val1", "val2"

-	mockResolver := newMockUserResolver([]string{user1, user2}, []string{bktName1, bktName2, bktName3}, "")
+	mockResolver := newMockUserResolver([]string{user1, user2}, []string{bktName1, bktName2, bktName3})

 	p := Policy{
 		Version: "2012-10-17",
@ -945,8 +866,8 @@ func TestComplexS3Conditions(t *testing.T) {
 				AWSPrincipalType: {principal1, principal2},
 			},
 			Effect:   DenyEffect,
-			Action:   []string{action},
-			Resource: []string{resource1, resource2, resource3},
+			Action:   []string{"s3:" + action},
+			Resource: []string{"arn:aws:s3:::" + resource1, "arn:aws:s3:::" + resource2, "arn:aws:s3:::" + resource3},
 			Conditions: map[string]Condition{
 				CondStringEquals: {key1: {val0, val1}},
 				CondStringLike:   {key2: {val2}},
@ -955,7 +876,7 @@ func TestComplexS3Conditions(t *testing.T) {
 	}

 	expectedStatus := chain.AccessDenied
-	expectedActions := chain.Actions{Names: []string{action, action2}}
+	expectedActions := chain.Actions{Names: actionToOpMap[action]}
 	expectedResources := chain.Resources{Names: []string{resource1, resource2, resource3}}

 	user1Condition := chain.Condition{Op: chain.CondStringEquals, Object: chain.ObjectRequest, Key: s3.PropertyKeyOwner, Value: mockResolver.users[user1]}
@ -1037,7 +958,7 @@ func TestComplexS3Conditions(t *testing.T) {
 		{
 			name:     "bucket resource3, all conditions matched",
 			action:   action,
-			resource: fmt.Sprintf(s3.ResourceFormatS3BucketObject, bktName3, "some-obj"),
+			resource: bktName3 + "/some-obj",
 			requestMap: map[string]string{
 				s3.PropertyKeyOwner: mockResolver.users[user1],
 				key1:                val0,
@ -1048,7 +969,7 @@ func TestComplexS3Conditions(t *testing.T) {
 		{
 			name:     "bucket resource, user condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(s3.ResourceFormatS3BucketObject, bktName2, "some-obj"),
+			resource: bktName2 + "/some-obj",
 			requestMap: map[string]string{
 				key1: val0,
 				key2: val2,
@ -1058,7 +979,7 @@ func TestComplexS3Conditions(t *testing.T) {
 		{
 			name:     "bucket resource, key2 condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(s3.ResourceFormatS3BucketObject, bktName3, "some-obj"),
+			resource: bktName3 + "/some-obj",
 			requestMap: map[string]string{
 				s3.PropertyKeyOwner: mockResolver.users[user1],
 				key1:                val0,
@ -1069,7 +990,7 @@ func TestComplexS3Conditions(t *testing.T) {
 		{
 			name:     "bucket resource, key1 condition mismatched",
 			action:   action,
-			resource: fmt.Sprintf(s3.ResourceFormatS3BucketObject, bktName2, "some-obj"),
+			resource: bktName2 + "/some-obj",
 			requestMap: map[string]string{
 				s3.PropertyKeyOwner: mockResolver.users[user1],
 				key2:                val2,
@ -1090,7 +1011,7 @@ func TestComplexS3Conditions(t *testing.T) {
 		{
 			name:     "bucket/object resource, resource mismatched",
 			action:   action,
-			resource: fmt.Sprintf(s3.ResourceFormatS3BucketObject, bktName1, "some-obj"),
+			resource: bktName1 + "/some-obj",
 			requestMap: map[string]string{
 				s3.PropertyKeyOwner: mockResolver.users[user1],
 				key1:                val0,
@ -1133,7 +1054,7 @@ func TestComplexS3Conditions(t *testing.T) {
 		{
 			name:     "resource mismatched",
 			action:   action,
-			resource: fmt.Sprintf(s3.ResourceFormatS3BucketObject, "some-bkt", "some-obj"),
+			resource: "some-bkt/some-obj",
 			requestMap: map[string]string{
 				s3.PropertyKeyOwner: mockResolver.users[user1],
 				key1:                val0,
@ -1151,57 +1072,6 @@ func TestComplexS3Conditions(t *testing.T) {
 	}
 }

-func TestS3BucketResource(t *testing.T) {
-	namespace := "ns"
-	bktName1, bktName2 := "bucket1", "bucket2"
-	chainName := chain.Name("name")
-
-	mockResolver := newMockUserResolver([]string{}, []string{}, "")
-
-	p := Policy{
-		Version: "2012-10-17",
-		Statement: []Statement{
-			{
-				Principal: map[PrincipalType][]string{Wildcard: nil},
-				Effect:    DenyEffect,
-				Action:    []string{"s3:HeadBucket"},
-				Resource:  []string{fmt.Sprintf(s3.ResourceFormatS3Bucket, bktName1)},
-			},
-			{
-				Principal: map[PrincipalType][]string{Wildcard: nil},
-				Effect:    AllowEffect,
-				Action:    []string{"*"},
-				Resource:  []string{s3.ResourceFormatS3All},
-			},
-		},
-	}
-
-	s3Chain, err := ConvertToS3Chain(p, mockResolver)
-	require.NoError(t, err)
-
-	s := inmemory.NewInMemory()
-	_, _, err = s.MorphRuleChainStorage().AddMorphRuleChain(chainName, engine.NamespaceTarget(namespace), s3Chain)
-	require.NoError(t, err)
-
-	// check we match just "bucket1" resource
-	req := testutil.NewRequest("s3:HeadBucket", testutil.NewResource(fmt.Sprintf(s3.ResourceFormatS3Bucket, bktName1), nil), nil)
-	status, _, err := s.IsAllowed(chainName, engine.NewRequestTargetWithNamespace(namespace), req)
-	require.NoError(t, err)
-	require.Equal(t, chain.AccessDenied.String(), status.String())
-
-	// check we match just "bucket2" resource
-	req = testutil.NewRequest("s3:HeadBucket", testutil.NewResource(fmt.Sprintf(s3.ResourceFormatS3Bucket, bktName2), nil), nil)
-	status, _, err = s.IsAllowed(chainName, engine.NewRequestTargetWithNamespace(namespace), req)
-	require.NoError(t, err)
-	require.Equal(t, chain.Allow.String(), status.String())
-
-	// check we also match "bucket2/object" resource
-	req = testutil.NewRequest("s3:PutObject", testutil.NewResource(fmt.Sprintf(s3.ResourceFormatS3BucketObject, bktName2, "object"), nil), nil)
-	status, _, err = s.IsAllowed(chainName, engine.NewRequestTargetWithNamespace(namespace), req)
-	require.NoError(t, err)
-	require.Equal(t, chain.Allow.String(), status.String())
-}
-
 func TestWildcardConverters(t *testing.T) {
 	policy := `{"Version":"2012-10-17","Statement":{"Effect":"Allow", "Principal": "*", "Action":"*","Resource":"*"}}`

@ -1209,73 +1079,60 @@ func TestWildcardConverters(t *testing.T) {
 	err := json.Unmarshal([]byte(policy), &p)
 	require.NoError(t, err)

-	s3Expected := &chain.Chain{
-		Rules: []chain.Rule{{
-			Status:    chain.Allow,
-			Actions:   chain.Actions{Names: []string{Wildcard}},
-			Resources: chain.Resources{Names: []string{Wildcard}},
-		}},
-	}
-
-	s3Chain, err := ConvertToS3Chain(p, newMockUserResolver(nil, nil, ""))
+	_, err = ConvertToS3Chain(p, newMockUserResolver(nil, nil))
 	require.NoError(t, err)
-	require.Equal(t, s3Expected, s3Chain)

-	nativeExpected := &chain.Chain{
-		Rules: []chain.Rule{{
-			Status:    chain.Allow,
-			Actions:   chain.Actions{Names: []string{Wildcard}},
-			Resources: chain.Resources{Names: []string{native.ResourceFormatAllObjects, native.ResourceFormatAllContainers}},
-		}},
-	}
-
-	nativeChain, err := ConvertToNativeChain(p, newMockUserResolver(nil, nil, ""))
+	_, err = ConvertToNativeChain(p, newMockUserResolver(nil, nil))
 	require.NoError(t, err)
-	require.Equal(t, nativeExpected, nativeChain)
 }

 func TestActionParsing(t *testing.T) {
 	for _, tc := range []struct {
-		action string
-		err    bool
+		action   string
+		expected string
+		err      bool
 	}{
 		{
-			action: "withoutPrefix",
-			err:    true,
+			action:   "withoutPrefix",
+			expected: "",
+			err:      true,
 		},
 		{
-			action: "s3:*Object",
-			err:    true,
+			action:   "s3:*Object",
+			expected: "",
+			err:      true,
 		},
 		{
-			action: "*",
+			action:   "*",
+			expected: "*",
 		},
 		{
-			action: "s3:PutObject",
+			action:   "s3:PutObject",
+			expected: "PutObject",
 		},
 		{
-			action: "s3:Put*",
+			action:   "s3:Put*",
+			expected: "Put*",
 		},
 		{
-			action: "s3:*",
+			action:   "s3:*",
+			expected: "*",
 		},
 		{
 			action: "s3:",
-		},
-		{
-			action: "iam:ListAccessKeys",
-		},
-		{
-			action: "iam:*",
+
+			expected: "",
 		},
 	} {
 		t.Run("", func(t *testing.T) {
-			err := validateAction(tc.action)
+			actual, err := parseActionAsS3Action(tc.action)
 			if tc.err {
 				require.Error(t, err)
-			} else {
-				require.NoError(t, err)
+				return
 			}
+
+			require.NoError(t, err)
+			require.Equal(t, tc.expected, actual)
 		})
 	}
 }
@ -1345,24 +1202,55 @@ func TestPrincipalParsing(t *testing.T) {

 func TestResourceParsing(t *testing.T) {
 	for _, tc := range []struct {
-		resource string
-		err      bool
+		resource       string
+		expectedBucket string
+		expectedObject string
+		err            bool
 	}{
-		{resource: "withoutPrefixAnd", err: true},
-		{resource: "arn:aws:s3:::*/obj", err: true},
-		{resource: "arn:aws:s3:::bkt/*"},
-		{resource: "arn:aws:s3:::bkt"},
-		{resource: "arn:aws:s3:::bkt/"},
-		{resource: "arn:aws:s3:::*"},
-		{resource: "*"},
+		{
+			resource: "withoutPrefixAnd",
+			err:      true,
+		},
+		{
+			resource: "arn:aws:s3:::*/obj",
+			err:      true,
+		},
+		{
+			resource:       "arn:aws:s3:::bkt/*",
+			expectedBucket: "bkt",
+			expectedObject: "*",
+		},
+		{
+			resource:       "arn:aws:s3:::bkt",
+			expectedBucket: "bkt",
+			expectedObject: "*",
+		},
+		{
+			resource:       "arn:aws:s3:::bkt/",
+			expectedBucket: "bkt",
+			expectedObject: "*",
+		},
+		{
+			resource:       "arn:aws:s3:::*",
+			expectedBucket: "*",
+			expectedObject: "*",
+		},
+		{
+			resource:       "*",
+			expectedBucket: "*",
+			expectedObject: "*",
+		},
 	} {
 		t.Run("", func(t *testing.T) {
-			err := validateResource(tc.resource)
+			bkt, obj, err := parseResourceAsS3ARN(tc.resource)
 			if tc.err {
 				require.Error(t, err)
-			} else {
-				require.NoError(t, err)
+				return
 			}
+
+			require.NoError(t, err)
+			require.Equal(t, tc.expectedBucket, bkt)
+			require.Equal(t, tc.expectedObject, obj)
 		})
 	}
 }
--- a/iam/policy.go
+++ b/iam/policy.go
@ -46,8 +46,6 @@ type (
 	PrincipalType string
 )

-const policyVersion = "2012-10-17"
-
 const (
 	GeneralPolicyType PolicyType = iota
 	IdentityBasedPolicyType
@ -224,20 +222,11 @@ func (p Policy) Validate(typ PolicyType) error {
 }

 func (p Policy) validate() error {
-	if p.Version != policyVersion {
-		return fmt.Errorf("invalid policy version, expected '%s', actual: '%s'", policyVersion, p.Version)
-	}
-
 	if len(p.Statement) == 0 {
 		return errors.New("'Statement' is missing")
 	}

-	sids := make(map[string]struct{}, len(p.Statement))
 	for _, statement := range p.Statement {
-		if _, ok := sids[statement.SID]; ok && statement.SID != "" {
-			return fmt.Errorf("duplicate 'SID': %s", statement.SID)
-		}
-		sids[statement.SID] = struct{}{}
 		if !statement.Effect.IsValid() {
 			return fmt.Errorf("unknown effect: '%s'", statement.Effect)
 		}
--- a/iam/policy_test.go
+++ b/iam/policy_test.go
@ -2,14 +2,8 @@ package iam

 import (
 	"encoding/json"
-	"fmt"
 	"testing"

-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine/inmemory"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource/testutil"
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
 	"github.com/stretchr/testify/require"
 )

@ -218,7 +212,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "valid permission boundaries",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:   AllowEffect,
 					Action:   []string{"s3:*", "cloudwatch:*", "ec2:*"},
@ -231,7 +224,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid effect",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:   "dummy",
 					Action:   []string{"s3:*", "cloudwatch:*", "ec2:*"},
@ -244,7 +236,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid principal block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:       AllowEffect,
 					Action:       []string{"s3:*", "cloudwatch:*", "ec2:*"},
@ -259,7 +250,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid not principal",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:       AllowEffect,
 					Action:       []string{"s3:*", "cloudwatch:*", "ec2:*"},
@ -273,7 +263,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid principal type",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:       AllowEffect,
 					Action:       []string{"s3:*", "cloudwatch:*", "ec2:*"},
@ -287,7 +276,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid action block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:    AllowEffect,
 					Action:    []string{"s3:*", "cloudwatch:*", "ec2:*"},
@ -301,7 +289,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "general invalid resource block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:      AllowEffect,
 					Resource:    []string{Wildcard},
@ -314,7 +301,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "invalid resource block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:      AllowEffect,
 					Resource:    []string{},
@ -327,7 +313,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "missing resource block",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect: AllowEffect,
 				}},
@ -341,43 +326,9 @@ func TestValidatePolicies(t *testing.T) {
 			typ:     GeneralPolicyType,
 			isValid: false,
 		},
-		{
-			name: "duplicate sid",
-			policy: Policy{
-				Version: policyVersion,
-				Statement: []Statement{
-					{
-						SID:      "sid",
-						Effect:   AllowEffect,
-						Action:   []string{"s3:*"},
-						Resource: []string{Wildcard},
-					},
-					{
-						SID:      "sid",
-						Effect:   AllowEffect,
-						Action:   []string{"cloudwatch:*"},
-						Resource: []string{Wildcard},
-					}},
-			},
-			typ:     GeneralPolicyType,
-			isValid: false,
-		},
-		{
-			name: "missing version",
-			policy: Policy{
-				Statement: []Statement{{
-					Effect:   AllowEffect,
-					Action:   []string{"s3:*"},
-					Resource: []string{Wildcard},
-				}},
-			},
-			typ:     GeneralPolicyType,
-			isValid: false,
-		},
 		{
 			name: "identity based valid",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:   AllowEffect,
 					Action:   []string{"s3:PutObject"},
@ -390,8 +341,7 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "identity based invalid because of id presence",
 			policy: Policy{
-				ID:      "some-id",
-				Version: policyVersion,
+				ID: "some-id",
 				Statement: []Statement{{
 					Effect:   AllowEffect,
 					Action:   []string{"s3:PutObject"},
@ -404,7 +354,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "identity based invalid because of principal presence",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:    AllowEffect,
 					Action:    []string{"s3:PutObject"},
@ -418,7 +367,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "identity based invalid because of not principal presence",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:       AllowEffect,
 					Action:       []string{"s3:PutObject"},
@ -432,7 +380,6 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "resource based valid principal",
 			policy: Policy{
-				Version: policyVersion,
 				Statement: []Statement{{
 					Effect:    DenyEffect,
 					Action:    []string{"s3:PutObject"},
@ -446,8 +393,7 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "resource based valid not principal",
 			policy: Policy{
-				ID:      "some-id",
-				Version: policyVersion,
+				ID: "some-id",
 				Statement: []Statement{{
 					Effect:       DenyEffect,
 					Action:       []string{"s3:PutObject"},
@ -461,8 +407,7 @@ func TestValidatePolicies(t *testing.T) {
 		{
 			name: "resource based invalid missing principal",
 			policy: Policy{
-				ID:      "some-id",
-				Version: policyVersion,
+				ID: "some-id",
 				Statement: []Statement{{
 					Effect:   AllowEffect,
 					Action:   []string{"s3:PutObject"},
@ -483,70 +428,3 @@ func TestValidatePolicies(t *testing.T) {
 		})
 	}
 }
-
-func TestProcessDenyFirst(t *testing.T) {
-	identityBasedPolicyStr := `
-{
-    "Version": "2012-10-17",
-    "Statement": [
-        {
-            "Effect": "Allow",
-			"Principal": {
-				"AWS": [ "arn:aws:iam::root:user/user-name" ]
-			},
-            "Action": ["s3:PutObject" ],
-            "Resource": "arn:aws:s3:::*"
-        }
-    ]
-}
-`
-
-	resourceBasedPolicyStr := `
-{
-    "Version": "2012-10-17",
-    "Statement": [
-        {
-            "Effect": "Deny",
-            "Principal": "*",
-            "Action": "s3:*",
-            "Resource": [ "arn:aws:s3:::test-bucket/*" ]
-        }
-    ]
-}
-`
-
-	var identityPolicy Policy
-	err := json.Unmarshal([]byte(identityBasedPolicyStr), &identityPolicy)
-	require.NoError(t, err)
-
-	var resourcePolicy Policy
-	err = json.Unmarshal([]byte(resourceBasedPolicyStr), &resourcePolicy)
-	require.NoError(t, err)
-
-	mockResolver := newMockUserResolver([]string{"root/user-name"}, []string{"test-bucket"}, "")
-
-	identityNativePolicy, err := ConvertToNativeChain(identityPolicy, mockResolver)
-	require.NoError(t, err)
-	identityNativePolicy.MatchType = chain.MatchTypeFirstMatch
-
-	resourceNativePolicy, err := ConvertToNativeChain(resourcePolicy, mockResolver)
-	require.NoError(t, err)
-
-	s := inmemory.NewInMemory()
-
-	target := engine.NamespaceTarget("ns")
-
-	_, _, err = s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, target, identityNativePolicy)
-	require.NoError(t, err)
-
-	_, _, err = s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, target, resourceNativePolicy)
-	require.NoError(t, err)
-
-	resource := testutil.NewResource(fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.containers["test-bucket"]), nil)
-	request := testutil.NewRequest("PutObject", resource, map[string]string{native.PropertyKeyActorPublicKey: mockResolver.users["root/user-name"]})
-
-	status, found, err := s.IsAllowed(chain.Ingress, engine.NewRequestTarget("ns", ""), request)
-	require.NoError(t, err)
-	require.True(t, found)
-	require.Equal(t, chain.AccessDenied, status)
-}
--- a/pkg/chain/chain.go
+++ b/pkg/chain/chain.go
@ -1,38 +1,25 @@
 package chain

 import (
+	"encoding/json"
 	"fmt"
 	"strings"

 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
 	"git.frostfs.info/TrueCloudLab/policy-engine/util"
-	"golang.org/x/exp/slices"
 )

 // ID is the ID of rule chain.
-type ID []byte
+type ID string

-// MatchType is the match type for chain rules.
-type MatchType uint8
-
-const (
-	// MatchTypeDenyPriority rejects the request if any `Deny` is specified.
-	MatchTypeDenyPriority MatchType = 0
-	// MatchTypeFirstMatch returns the first rule action matched to the request.
-	MatchTypeFirstMatch MatchType = 1
-)
-
-//easyjson:json
 type Chain struct {
 	ID ID

 	Rules []Rule
-
-	MatchType MatchType
 }

 func (c *Chain) Bytes() []byte {
-	data, err := c.MarshalBinary()
+	data, err := json.Marshal(c)
 	if err != nil {
 		panic(err)
 	}
@ -40,7 +27,7 @@ func (c *Chain) Bytes() []byte {
 }

 func (c *Chain) DecodeBytes(b []byte) error {
-	return c.UnmarshalBinary(b)
+	return json.Unmarshal(b, c)
 }

 type Rule struct {
@ -77,8 +64,6 @@ type ObjectType byte
 const (
 	ObjectResource ObjectType = iota
 	ObjectRequest
-	ContainerResource
-	ContainerRequest
 )

 type ConditionType byte
@ -106,48 +91,45 @@ const (
 	CondNumericLessThanEquals
 	CondNumericGreaterThan
 	CondNumericGreaterThanEquals
-
-	CondSliceContains
 )

-var condToStr = []struct {
-	ct  ConditionType
-	str string
-}{
-	{CondStringEquals, "StringEquals"},
-	{CondStringNotEquals, "StringNotEquals"},
-	{CondStringEqualsIgnoreCase, "StringEqualsIgnoreCase"},
-	{CondStringNotEqualsIgnoreCase, "StringNotEqualsIgnoreCase"},
-	{CondStringLike, "StringLike"},
-	{CondStringNotLike, "StringNotLike"},
-	{CondStringLessThan, "StringLessThan"},
-	{CondStringLessThanEquals, "StringLessThanEquals"},
-	{CondStringGreaterThan, "StringGreaterThan"},
-	{CondStringGreaterThanEquals, "StringGreaterThanEquals"},
-	{CondNumericEquals, "NumericEquals"},
-	{CondNumericNotEquals, "NumericNotEquals"},
-	{CondNumericLessThan, "NumericLessThan"},
-	{CondNumericLessThanEquals, "NumericLessThanEquals"},
-	{CondNumericGreaterThan, "NumericGreaterThan"},
-	{CondNumericGreaterThanEquals, "NumericGreaterThanEquals"},
-	{CondSliceContains, "SliceContains"},
-}
-
 func (c ConditionType) String() string {
-	for _, v := range condToStr {
-		if v.ct == c {
-			return v.str
-		}
+	switch c {
+	case CondStringEquals:
+		return "StringEquals"
+	case CondStringNotEquals:
+		return "StringNotEquals"
+	case CondStringEqualsIgnoreCase:
+		return "StringEqualsIgnoreCase"
+	case CondStringNotEqualsIgnoreCase:
+		return "StringNotEqualsIgnoreCase"
+	case CondStringLike:
+		return "StringLike"
+	case CondStringNotLike:
+		return "StringNotLike"
+	case CondStringLessThan:
+		return "StringLessThan"
+	case CondStringLessThanEquals:
+		return "StringLessThanEquals"
+	case CondStringGreaterThan:
+		return "StringGreaterThan"
+	case CondStringGreaterThanEquals:
+		return "StringGreaterThanEquals"
+	case CondNumericEquals:
+		return "NumericEquals"
+	case CondNumericNotEquals:
+		return "NumericNotEquals"
+	case CondNumericLessThan:
+		return "NumericLessThan"
+	case CondNumericLessThanEquals:
+		return "NumericLessThanEquals"
+	case CondNumericGreaterThan:
+		return "NumericGreaterThan"
+	case CondNumericGreaterThanEquals:
+		return "NumericGreaterThanEquals"
+	default:
+		return "unknown condition type"
 	}
-	return "unknown condition type"
-}
-
-const condSliceContainsDelimiter = "\x00"
-
-// FormCondSliceContainsValue builds value for ObjectResource or ObjectRequest property
-// that can be matched by CondSliceContains condition.
-func FormCondSliceContainsValue(values []string) string {
-	return strings.Join(values, condSliceContainsDelimiter)
 }

 func (c *Condition) Match(req resource.Request) bool {
@ -184,8 +166,6 @@ func (c *Condition) Match(req resource.Request) bool {
 		return val > c.Value
 	case CondStringGreaterThanEquals:
 		return val >= c.Value
-	case CondSliceContains:
-		return slices.Contains(strings.Split(val, condSliceContainsDelimiter), c.Value)
 	}
 }

@ -234,17 +214,6 @@ func (r *Rule) matchAll(obj resource.Request) (status Status, matched bool) {
 }

 func (c *Chain) Match(req resource.Request) (status Status, matched bool) {
-	switch c.MatchType {
-	case MatchTypeDenyPriority:
-		return c.denyPriority(req)
-	case MatchTypeFirstMatch:
-		return c.firstMatch(req)
-	default:
-		panic(fmt.Sprintf("unknown MatchType %d", c.MatchType))
-	}
-}
-
-func (c *Chain) firstMatch(req resource.Request) (status Status, matched bool) {
 	for i := range c.Rules {
 		status, matched := c.Rules[i].Match(req)
 		if matched {
@ -253,21 +222,3 @@ func (c *Chain) firstMatch(req resource.Request) (status Status, matched bool) {
 	}
 	return NoRuleFound, false
 }
-
-func (c *Chain) denyPriority(req resource.Request) (status Status, matched bool) {
-	var allowFound bool
-	for i := range c.Rules {
-		status, matched := c.Rules[i].Match(req)
-		if !matched {
-			continue
-		}
-		if status != Allow {
-			return status, true
-		}
-		allowFound = true
-	}
-	if allowFound {
-		return Allow, true
-	}
-	return NoRuleFound, false
-}
--- a/pkg/chain/chain_easyjson.go
+++ b/pkg/chain/chain_easyjson.go
--- a/pkg/chain/chain_names.go
+++ b/pkg/chain/chain_names.go
@ -7,7 +7,4 @@ const (
 	// Ingress represents chains applied when crossing user/storage network boundary.
 	// It is not applied when talking between nodes.
 	Ingress Name = "ingress"
-
-	// S3 represents chains applied when crossing user/s3 network boundary.
-	S3 Name = "s3"
 )
--- a/pkg/chain/chain_test.go
+++ b/pkg/chain/chain_test.go
@ -3,28 +3,11 @@ package chain
 import (
 	"testing"

-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource/testutil"
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/common"
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
 	"github.com/stretchr/testify/require"
 )

-func TestChainIDSerialization(t *testing.T) {
-	chainIDBytes := []byte{93, 236, 80, 138, 168, 3, 144, 92, 173, 141, 16, 42, 249, 90, 97, 109, 211, 169, 54, 163}
-
-	chain1 := &Chain{ID: ID(chainIDBytes)}
-	data := chain1.Bytes()
-
-	var chain2 Chain
-	err := chain2.DecodeBytes(data)
-	require.NoError(t, err)
-
-	require.Equal(t, chain1.ID, chain2.ID)
-}
-
 func TestEncodeDecode(t *testing.T) {
 	expected := Chain{
-		MatchType: MatchTypeFirstMatch,
 		Rules: []Rule{
 			{
 				Status: Allow,
@ -48,104 +31,3 @@ func TestEncodeDecode(t *testing.T) {
 	require.NoError(t, actual.DecodeBytes(data))
 	require.Equal(t, expected, actual)
 }
-
-func TestReturnFirstMatch(t *testing.T) {
-	ch := Chain{
-		Rules: []Rule{
-			{
-				Status: Allow,
-				Actions: Actions{Names: []string{
-					native.MethodPutObject,
-				}},
-				Resources: Resources{Names: []string{native.ResourceFormatRootContainers}},
-				Condition: []Condition{},
-			},
-			{
-				Status: AccessDenied,
-				Actions: Actions{Names: []string{
-					native.MethodPutObject,
-				}},
-				Resources: Resources{Names: []string{native.ResourceFormatRootContainers}},
-				Condition: []Condition{},
-			},
-		},
-	}
-
-	resource := testutil.NewResource(native.ResourceFormatRootContainers, nil)
-	request := testutil.NewRequest(native.MethodPutObject, resource, nil)
-
-	t.Run("default match", func(t *testing.T) {
-		st, found := ch.Match(request)
-		require.True(t, found)
-		require.Equal(t, AccessDenied, st)
-	})
-
-	t.Run("return first match", func(t *testing.T) {
-		ch.MatchType = MatchTypeFirstMatch
-		st, found := ch.Match(request)
-		require.True(t, found)
-		require.Equal(t, Allow, st)
-	})
-}
-
-func TestCondSliceContainsMatch(t *testing.T) {
-	propKey := common.PropertyKeyFrostFSIDGroupID
-	groupID := "1"
-
-	ch := Chain{Rules: []Rule{{
-		Status:    Allow,
-		Actions:   Actions{Names: []string{native.MethodPutObject}},
-		Resources: Resources{Names: []string{native.ResourceFormatRootContainers}},
-		Condition: []Condition{{
-			Op:     CondSliceContains,
-			Object: ObjectRequest,
-			Key:    propKey,
-			Value:  groupID,
-		}},
-	}}}
-
-	for _, tc := range []struct {
-		name   string
-		value  string
-		status Status
-	}{
-		{
-			name:   "simple value",
-			value:  groupID,
-			status: Allow,
-		},
-		{
-			name:   "simple value by func",
-			value:  FormCondSliceContainsValue([]string{groupID}),
-			status: Allow,
-		},
-		{
-			name:   "multiple values by func",
-			value:  FormCondSliceContainsValue([]string{groupID, "2", "3"}),
-			status: Allow,
-		},
-		{
-			name:   "simple mismatched",
-			value:  "3",
-			status: NoRuleFound,
-		},
-		{
-			name:   "multiple mismatched",
-			value:  FormCondSliceContainsValue([]string{"11", "12"}),
-			status: NoRuleFound,
-		},
-		{
-			name:   "comma correct handling mismatched",
-			value:  "1,11",
-			status: NoRuleFound,
-		},
-	} {
-		t.Run(tc.name, func(t *testing.T) {
-			resource := testutil.NewResource(native.ResourceFormatRootContainers, nil)
-			request := testutil.NewRequest(native.MethodPutObject, resource, map[string]string{propKey: tc.value})
-
-			st, _ := ch.Match(request)
-			require.Equal(t, tc.status.String(), st.String())
-		})
-	}
-}
--- a/pkg/chain/marshal_binary.go
+++ b/pkg/chain/marshal_binary.go
@ -1,257 +0,0 @@
-package chain
-
-import (
-	"encoding"
-	"fmt"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/marshal"
-)
-
-const (
-	ChainMarshalVersion uint8 = 0 // increase if breaking change
-)
-
-var (
-	_ encoding.BinaryMarshaler   = (*Chain)(nil)
-	_ encoding.BinaryUnmarshaler = (*Chain)(nil)
-)
-
-func (c *Chain) MarshalBinary() ([]byte, error) {
-	s := marshal.UInt8Size // Marshaller version
-	s += marshal.UInt8Size // Chain version
-	s += marshal.SliceSize(c.ID, func(byte) int { return marshal.ByteSize })
-	s += marshal.SliceSize(c.Rules, ruleSize)
-	s += marshal.UInt8Size // MatchType
-
-	buf := make([]byte, s)
-	var offset int
-	var err error
-	offset, err = marshal.UInt8Marshal(buf, offset, marshal.Version)
-	if err != nil {
-		return nil, err
-	}
-	offset, err = marshal.UInt8Marshal(buf, offset, ChainMarshalVersion)
-	if err != nil {
-		return nil, err
-	}
-	offset, err = marshal.SliceMarshal(buf, offset, c.ID, marshal.ByteMarshal)
-	if err != nil {
-		return nil, err
-	}
-	offset, err = marshal.SliceMarshal(buf, offset, c.Rules, marshalRule)
-	if err != nil {
-		return nil, err
-	}
-	offset, err = marshal.UInt8Marshal(buf, offset, uint8(c.MatchType))
-	if err != nil {
-		return nil, err
-	}
-
-	if err := marshal.VerifyMarshal(buf, offset); err != nil {
-		return nil, err
-	}
-	return buf, nil
-}
-
-func (c *Chain) UnmarshalBinary(data []byte) error {
-	var offset int
-
-	marshallerVersion, offset, err := marshal.UInt8Unmarshal(data, offset)
-	if err != nil {
-		return err
-	}
-	if marshallerVersion != marshal.Version {
-		return fmt.Errorf("unsupported marshaller version %d", marshallerVersion)
-	}
-
-	chainVersion, offset, err := marshal.UInt8Unmarshal(data, offset)
-	if err != nil {
-		return err
-	}
-	if chainVersion != ChainMarshalVersion {
-		return fmt.Errorf("unsupported chain version %d", chainVersion)
-	}
-
-	idBytes, offset, err := marshal.SliceUnmarshal(data, offset, marshal.ByteUnmarshal)
-	if err != nil {
-		return err
-	}
-	c.ID = ID(idBytes)
-
-	c.Rules, offset, err = marshal.SliceUnmarshal(data, offset, unmarshalRule)
-	if err != nil {
-		return err
-	}
-
-	matchTypeV, offset, err := marshal.UInt8Unmarshal(data, offset)
-	if err != nil {
-		return err
-	}
-	c.MatchType = MatchType(matchTypeV)
-
-	return marshal.VerifyUnmarshal(data, offset)
-}
-
-func ruleSize(r Rule) int {
-	s := marshal.ByteSize // Status
-	s += actionsSize(r.Actions)
-	s += resourcesSize(r.Resources)
-	s += marshal.BoolSize // Any
-	s += marshal.SliceSize(r.Condition, conditionSize)
-	return s
-}
-
-func marshalRule(buf []byte, offset int, r Rule) (int, error) {
-	offset, err := marshal.ByteMarshal(buf, offset, byte(r.Status))
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshalActions(buf, offset, r.Actions)
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshalResources(buf, offset, r.Resources)
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshal.BoolMarshal(buf, offset, r.Any)
-	if err != nil {
-		return 0, err
-	}
-	return marshal.SliceMarshal(buf, offset, r.Condition, marshalCondition)
-}
-
-func unmarshalRule(buf []byte, offset int) (Rule, int, error) {
-	var r Rule
-	statusV, offset, err := marshal.ByteUnmarshal(buf, offset)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-	r.Status = Status(statusV)
-
-	r.Actions, offset, err = unmarshalActions(buf, offset)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-
-	r.Resources, offset, err = unmarshalResources(buf, offset)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-
-	r.Any, offset, err = marshal.BoolUnmarshal(buf, offset)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-
-	r.Condition, offset, err = marshal.SliceUnmarshal(buf, offset, unmarshalCondition)
-	if err != nil {
-		return Rule{}, 0, err
-	}
-
-	return r, offset, nil
-}
-
-func actionsSize(a Actions) int {
-	return marshal.BoolSize + // Inverted
-		marshal.SliceSize(a.Names, marshal.StringSize)
-}
-
-func marshalActions(buf []byte, offset int, a Actions) (int, error) {
-	offset, err := marshal.BoolMarshal(buf, offset, a.Inverted)
-	if err != nil {
-		return 0, err
-	}
-	return marshal.SliceMarshal(buf, offset, a.Names, marshal.StringMarshal)
-}
-
-func unmarshalActions(buf []byte, offset int) (Actions, int, error) {
-	var a Actions
-	var err error
-	a.Inverted, offset, err = marshal.BoolUnmarshal(buf, offset)
-	if err != nil {
-		return Actions{}, 0, err
-	}
-	a.Names, offset, err = marshal.SliceUnmarshal(buf, offset, marshal.StringUnmarshal)
-	if err != nil {
-		return Actions{}, 0, err
-	}
-	return a, offset, nil
-}
-
-func resourcesSize(r Resources) int {
-	return marshal.BoolSize + // Inverted
-		marshal.SliceSize(r.Names, marshal.StringSize)
-}
-
-func marshalResources(buf []byte, offset int, r Resources) (int, error) {
-	offset, err := marshal.BoolMarshal(buf, offset, r.Inverted)
-	if err != nil {
-		return 0, err
-	}
-	return marshal.SliceMarshal(buf, offset, r.Names, marshal.StringMarshal)
-}
-
-func unmarshalResources(buf []byte, offset int) (Resources, int, error) {
-	var r Resources
-	var err error
-	r.Inverted, offset, err = marshal.BoolUnmarshal(buf, offset)
-	if err != nil {
-		return Resources{}, 0, err
-	}
-	r.Names, offset, err = marshal.SliceUnmarshal(buf, offset, marshal.StringUnmarshal)
-	if err != nil {
-		return Resources{}, 0, err
-	}
-	return r, offset, nil
-}
-
-func conditionSize(c Condition) int {
-	return marshal.ByteSize + // Op
-		marshal.ByteSize + // Object
-		marshal.StringSize(c.Key) +
-		marshal.StringSize(c.Value)
-}
-
-func marshalCondition(buf []byte, offset int, c Condition) (int, error) {
-	offset, err := marshal.ByteMarshal(buf, offset, byte(c.Op))
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshal.ByteMarshal(buf, offset, byte(c.Object))
-	if err != nil {
-		return 0, err
-	}
-	offset, err = marshal.StringMarshal(buf, offset, c.Key)
-	if err != nil {
-		return 0, err
-	}
-	return marshal.StringMarshal(buf, offset, c.Value)
-}
-
-func unmarshalCondition(buf []byte, offset int) (Condition, int, error) {
-	var c Condition
-	opV, offset, err := marshal.ByteUnmarshal(buf, offset)
-	if err != nil {
-		return Condition{}, 0, err
-	}
-	c.Op = ConditionType(opV)
-
-	obV, offset, err := marshal.ByteUnmarshal(buf, offset)
-	if err != nil {
-		return Condition{}, 0, err
-	}
-	c.Object = ObjectType(obV)
-
-	c.Key, offset, err = marshal.StringUnmarshal(buf, offset)
-	if err != nil {
-		return Condition{}, 0, err
-	}
-
-	c.Value, offset, err = marshal.StringUnmarshal(buf, offset)
-	if err != nil {
-		return Condition{}, 0, err
-	}
-
-	return c, offset, nil
-}
--- a/pkg/chain/marshal_binary_test.go
+++ b/pkg/chain/marshal_binary_test.go
@ -1,272 +0,0 @@
-package chain
-
-import (
-	"fmt"
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
-	"github.com/google/uuid"
-	"github.com/stretchr/testify/require"
-)
-
-func TestChainMarshalling(t *testing.T) {
-	t.Parallel()
-	for _, id := range generateTestIDs() {
-		for _, rules := range generateTestRules() {
-			for _, matchType := range generateTestMatchTypes() {
-				performMarshalTest(t, id, rules, matchType)
-			}
-		}
-	}
-}
-
-func TestInvalidChainData(t *testing.T) {
-	var ch Chain
-	require.Error(t, ch.UnmarshalBinary(nil))
-	require.Error(t, ch.UnmarshalBinary([]byte{}))
-	require.Error(t, ch.UnmarshalBinary([]byte{1, 2, 3}))
-	require.Error(t, ch.UnmarshalBinary([]byte("\x00\x00:aws:iam::namespace:group/so\x82\x82\x82\x82\x82\x82u\x82")))
-}
-
-func FuzzUnmarshal(f *testing.F) {
-	for _, id := range generateTestIDs() {
-		for _, rules := range generateTestRules() {
-			for _, matchType := range generateTestMatchTypes() {
-
-				chain := Chain{
-					ID:        id,
-					Rules:     rules,
-					MatchType: matchType,
-				}
-				data, err := chain.MarshalBinary()
-				require.NoError(f, err)
-				f.Add(data)
-			}
-		}
-	}
-
-	f.Fuzz(func(t *testing.T, data []byte) {
-		var ch Chain
-		require.NotPanics(t, func() {
-			_ = ch.UnmarshalBinary(data)
-		})
-	})
-}
-
-func performMarshalTest(t *testing.T, id ID, r []Rule, mt MatchType) {
-	chain := Chain{
-		ID:        id,
-		Rules:     r,
-		MatchType: mt,
-	}
-	data, err := chain.MarshalBinary()
-	require.NoError(t, err)
-
-	var unmarshalledChain Chain
-	require.NoError(t, unmarshalledChain.UnmarshalBinary(data))
-
-	require.Equal(t, chain, unmarshalledChain)
-}
-
-func generateTestIDs() []ID {
-	return []ID{
-		ID(""),
-		ID(uuid.New().String()),
-		ID("*::/"),
-		ID("avada kedavra"),
-		ID("arn:aws:iam::namespace:group/some_group"),
-		ID("$Object:homomorphicHash"),
-		ID("native:container/ns/9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J"),
-	}
-}
-
-func generateTestRules() [][]Rule {
-	result := [][]Rule{
-		nil,
-		{},
-		{},
-	}
-
-	for _, st := range generateTestStatuses() {
-		for _, act := range generateTestActions() {
-			for _, res := range generateTestResources() {
-				for _, cond := range generateTestConditions() {
-					result[2] = append(result[2], Rule{
-						Status:    st,
-						Actions:   act,
-						Resources: res,
-						Condition: cond,
-						Any:       true,
-					})
-					result[2] = append(result[2], Rule{
-						Status:    st,
-						Actions:   act,
-						Resources: res,
-						Condition: cond,
-					})
-				}
-			}
-		}
-	}
-
-	return result
-}
-
-func generateTestStatuses() []Status {
-	return []Status{
-		Allow,
-		NoRuleFound,
-		AccessDenied,
-		QuotaLimitReached,
-	}
-}
-
-func generateTestActions() []Actions {
-	return []Actions{
-		{
-			Inverted: true,
-			Names:    nil,
-		},
-		{
-			Names: nil,
-		},
-		{
-			Inverted: true,
-			Names:    []string{},
-		},
-		{
-			Names: []string{},
-		},
-		{
-			Inverted: true,
-			Names:    []string{native.MethodPutObject},
-		},
-		{
-			Names: []string{native.MethodPutObject},
-		},
-		{
-			Inverted: true,
-			Names:    []string{native.MethodPutObject, native.MethodDeleteContainer, native.MethodDeleteObject},
-		},
-		{
-			Names: []string{native.MethodPutObject, native.MethodDeleteContainer, native.MethodDeleteObject},
-		},
-	}
-}
-
-func generateTestResources() []Resources {
-	return []Resources{
-		{
-			Inverted: true,
-			Names:    nil,
-		},
-		{
-			Names: nil,
-		},
-		{
-			Inverted: true,
-			Names:    []string{},
-		},
-		{
-			Names: []string{},
-		},
-		{
-			Inverted: true,
-			Names:    []string{native.ResourceFormatAllObjects},
-		},
-		{
-			Names: []string{native.ResourceFormatAllObjects},
-		},
-		{
-			Inverted: true,
-			Names: []string{
-				native.ResourceFormatAllObjects,
-				fmt.Sprintf(native.ResourceFormatRootContainer, "9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J"),
-			},
-		},
-		{
-			Names: []string{
-				native.ResourceFormatAllObjects,
-				fmt.Sprintf(native.ResourceFormatRootContainer, "9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J"),
-			},
-		},
-	}
-}
-
-func generateTestConditions() [][]Condition {
-	result := [][]Condition{
-		nil,
-		{},
-		{},
-	}
-
-	for _, ct := range generateTestConditionTypes() {
-		for _, ot := range generateObjectTypes() {
-			result[2] = append(result[2], Condition{
-				Op:     ct,
-				Object: ot,
-				Key:    "",
-				Value:  "",
-			})
-
-			result[2] = append(result[2], Condition{
-				Op:     ct,
-				Object: ot,
-				Key:    "key",
-				Value:  "",
-			})
-
-			result[2] = append(result[2], Condition{
-				Op:     ct,
-				Object: ot,
-				Key:    "",
-				Value:  "value",
-			})
-
-			result[2] = append(result[2], Condition{
-				Op:     ct,
-				Object: ot,
-				Key:    "key",
-				Value:  "value",
-			})
-		}
-	}
-
-	return result
-}
-
-func generateTestConditionTypes() []ConditionType {
-	return []ConditionType{
-		CondStringEquals,
-		CondStringNotEquals,
-		CondStringEqualsIgnoreCase,
-		CondStringNotEqualsIgnoreCase,
-		CondStringLike,
-		CondStringNotLike,
-		CondStringLessThan,
-		CondStringLessThanEquals,
-		CondStringGreaterThan,
-		CondStringGreaterThanEquals,
-		CondNumericEquals,
-		CondNumericNotEquals,
-		CondNumericLessThan,
-		CondNumericLessThanEquals,
-		CondNumericGreaterThan,
-		CondNumericGreaterThanEquals,
-		CondSliceContains,
-	}
-}
-
-func generateObjectTypes() []ObjectType {
-	return []ObjectType{
-		ObjectResource,
-		ObjectRequest,
-	}
-}
-
-func generateTestMatchTypes() []MatchType {
-	return []MatchType{
-		MatchTypeDenyPriority,
-		MatchTypeFirstMatch,
-	}
-}
--- a/pkg/chain/marshal_json.go
+++ b/pkg/chain/marshal_json.go
@ -1,145 +0,0 @@
-package chain
-
-import (
-	"fmt"
-	"strconv"
-
-	jlexer "github.com/mailru/easyjson/jlexer"
-	jwriter "github.com/mailru/easyjson/jwriter"
-)
-
-// Run `make generate`` if types added or changed
-
-var matchTypeToJSONValue = []struct {
-	mt  MatchType
-	str string
-}{
-	{MatchTypeDenyPriority, "DenyPriority"},
-	{MatchTypeFirstMatch, "FirstMatch"},
-}
-
-var statusToJSONValue = []struct {
-	s   Status
-	str string
-}{
-	{Allow, "Allow"},
-	{NoRuleFound, "NoRuleFound"},
-	{AccessDenied, "AccessDenied"},
-	{QuotaLimitReached, "QuotaLimitReached"},
-}
-
-var objectTypeToJSONValue = []struct {
-	t   ObjectType
-	str string
-}{
-	{ObjectRequest, "Request"},
-	{ObjectResource, "Resource"},
-}
-
-func (mt MatchType) MarshalEasyJSON(w *jwriter.Writer) {
-	for _, p := range matchTypeToJSONValue {
-		if p.mt == mt {
-			w.String(p.str)
-			return
-		}
-	}
-	w.String(strconv.FormatUint(uint64(mt), 10))
-}
-
-func (mt *MatchType) UnmarshalEasyJSON(l *jlexer.Lexer) {
-	str := l.String()
-	for _, p := range matchTypeToJSONValue {
-		if p.str == str {
-			*mt = p.mt
-			return
-		}
-	}
-
-	v, err := strconv.ParseUint(str, 10, 8)
-	if err != nil {
-		l.AddError(fmt.Errorf("failed to parse match type: %w", err))
-		return
-	}
-	*mt = MatchType(v)
-}
-
-func (st Status) MarshalEasyJSON(w *jwriter.Writer) {
-	for _, p := range statusToJSONValue {
-		if p.s == st {
-			w.String(p.str)
-			return
-		}
-	}
-	w.String(strconv.FormatUint(uint64(st), 10))
-}
-
-func (st *Status) UnmarshalEasyJSON(l *jlexer.Lexer) {
-	str := l.String()
-	for _, p := range statusToJSONValue {
-		if p.str == str {
-			*st = p.s
-			return
-		}
-	}
-
-	v, err := strconv.ParseUint(str, 10, 8)
-	if err != nil {
-		l.AddError(fmt.Errorf("failed to parse status: %w", err))
-		return
-	}
-	*st = Status(v)
-}
-
-func (ot ObjectType) MarshalEasyJSON(w *jwriter.Writer) {
-	for _, p := range objectTypeToJSONValue {
-		if p.t == ot {
-			w.String(p.str)
-			return
-		}
-	}
-	w.String(strconv.FormatUint(uint64(ot), 10))
-}
-
-func (ot *ObjectType) UnmarshalEasyJSON(l *jlexer.Lexer) {
-	str := l.String()
-	for _, p := range objectTypeToJSONValue {
-		if p.str == str {
-			*ot = p.t
-			return
-		}
-	}
-
-	v, err := strconv.ParseUint(str, 10, 8)
-	if err != nil {
-		l.AddError(fmt.Errorf("failed to parse object type: %w", err))
-		return
-	}
-	*ot = ObjectType(v)
-}
-
-func (ct ConditionType) MarshalEasyJSON(w *jwriter.Writer) {
-	for _, p := range condToStr {
-		if p.ct == ct {
-			w.String(p.str)
-			return
-		}
-	}
-	w.String(strconv.FormatUint(uint64(ct), 10))
-}
-
-func (ct *ConditionType) UnmarshalEasyJSON(l *jlexer.Lexer) {
-	str := l.String()
-	for _, p := range condToStr {
-		if p.str == str {
-			*ct = p.ct
-			return
-		}
-	}
-
-	v, err := strconv.ParseUint(str, 10, 8)
-	if err != nil {
-		l.AddError(fmt.Errorf("failed to parse condition type: %w", err))
-		return
-	}
-	*ct = ConditionType(v)
-}
--- a/pkg/chain/marshal_json_test.go
+++ b/pkg/chain/marshal_json_test.go
@ -1,121 +0,0 @@
-package chain
-
-import (
-	"fmt"
-	"os"
-	"testing"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	"github.com/stretchr/testify/require"
-)
-
-func TestID(t *testing.T) {
-	key, err := keys.NewPrivateKeyFromWIF("L5eVx6HcHaFpQpvjQ3fy29uKDZ8rQ34bfMVx4XfZMm52EqafpNMg") // s3-gw key
-	require.NoError(t, err)
-
-	chain1 := &Chain{ID: ID(key.PublicKey().GetScriptHash().BytesBE())}
-	data := chain1.Bytes()
-
-	var chain2 Chain
-	require.NoError(t, chain2.DecodeBytes(data))
-
-	require.Equal(t, chain1.ID, chain2.ID)
-
-	data, err = chain1.MarshalJSON()
-	require.NoError(t, err)
-
-	require.NoError(t, chain2.UnmarshalJSON(data))
-
-	require.Equal(t, chain1.ID, chain2.ID)
-}
-
-func TestMatchTypeJson(t *testing.T) {
-	for _, mt := range []MatchType{MatchTypeDenyPriority, MatchTypeFirstMatch, MatchType(100)} {
-		var chain Chain
-		chain.MatchType = mt
-
-		data, err := chain.MarshalJSON()
-		require.NoError(t, err)
-		if mt == MatchTypeDenyPriority {
-			require.Equal(t, []byte("{\"ID\":null,\"Rules\":null,\"MatchType\":\"DenyPriority\"}"), data)
-		} else if mt == MatchTypeFirstMatch {
-			require.Equal(t, []byte("{\"ID\":null,\"Rules\":null,\"MatchType\":\"FirstMatch\"}"), data)
-		} else {
-			require.Equal(t, []byte(fmt.Sprintf("{\"ID\":null,\"Rules\":null,\"MatchType\":\"%d\"}", mt)), data)
-		}
-
-		var parsed Chain
-		require.NoError(t, parsed.UnmarshalJSON(data))
-		require.Equal(t, chain, parsed)
-
-		require.Error(t, parsed.UnmarshalJSON([]byte("{\"ID\":\"\",\"Rules\":null,\"MatchType\":\"NotValid\"}")))
-	}
-}
-
-func TestJsonEnums(t *testing.T) {
-	chain := Chain{
-		ID:        []byte("2cca5ae7-cee8-428d-b45f-567fb1d03f01"), // will be encoded to base64
-		MatchType: MatchTypeFirstMatch,
-		Rules: []Rule{
-			{
-				Status: AccessDenied,
-				Actions: Actions{
-					Names: []string{native.MethodDeleteObject, native.MethodGetContainer},
-				},
-				Resources: Resources{
-					Names: []string{native.ResourceFormatAllObjects},
-				},
-				Condition: []Condition{
-					{
-						Op:     CondStringEquals,
-						Object: ObjectRequest,
-						Key:    native.PropertyKeyActorRole,
-						Value:  native.PropertyValueContainerRoleOthers,
-					},
-				},
-			},
-			{
-				Status: QuotaLimitReached,
-				Actions: Actions{
-					Inverted: true,
-					Names:    []string{native.MethodPutObject},
-				},
-				Resources: Resources{
-					Names: []string{fmt.Sprintf(native.ResourceFormatRootContainerObjects, "9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J")},
-				},
-				Any: true,
-				Condition: []Condition{
-					{
-						Op:     CondStringNotLike,
-						Object: ObjectResource,
-						Key:    native.PropertyKeyObjectType,
-						Value:  "regular",
-					},
-				},
-			},
-			{
-				Status: Status(100),
-				Condition: []Condition{
-					{
-						Op:     ConditionType(255),
-						Object: ObjectType(128),
-					},
-				},
-			},
-		},
-	}
-
-	data, err := chain.MarshalJSON()
-	require.NoError(t, err)
-
-	var parsed Chain
-	require.NoError(t, parsed.UnmarshalJSON(data))
-	require.Equal(t, chain, parsed)
-
-	expected, err := os.ReadFile("./testdata/test_status_json.json")
-	require.NoError(t, err)
-
-	require.NoError(t, parsed.UnmarshalJSON(expected))
-	require.Equal(t, chain, parsed)
-}
--- a/pkg/chain/testdata/test_status_json.json
+++ b/pkg/chain/testdata/test_status_json.json
@ -1,75 +0,0 @@
-{
-    "ID": "MmNjYTVhZTctY2VlOC00MjhkLWI0NWYtNTY3ZmIxZDAzZjAx",
-    "Rules": [
-        {
-            "Status": "AccessDenied",
-            "Actions": {
-                "Inverted": false,
-                "Names": [
-                    "DeleteObject",
-                    "GetContainer"
-                ]
-            },
-            "Resources": {
-                "Inverted": false,
-                "Names": [
-                    "native:object/*"
-                ]
-            },
-            "Any": false,
-            "Condition": [
-                {
-                    "Op": "StringEquals",
-                    "Object": "Request",
-                    "Key": "$Actor:role",
-                    "Value": "others"
-                }
-            ]
-        },
-        {
-            "Status": "QuotaLimitReached",
-            "Actions": {
-                "Inverted": true,
-                "Names": [
-                    "PutObject"
-                ]
-            },
-            "Resources": {
-                "Inverted": false,
-                "Names": [
-                    "native:object//9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J/*"
-                ]
-            },
-            "Any": true,
-            "Condition": [
-                {
-                    "Op": "StringNotLike",
-                    "Object": "Resource",
-                    "Key": "$Object:objectType",
-                    "Value": "regular"
-                }
-            ]
-        },
-        {
-            "Status": "100",
-            "Actions": {
-                "Inverted": false,
-                "Names": null
-            },
-            "Resources": {
-                "Inverted": false,
-                "Names": null
-            },
-            "Any": false,
-            "Condition": [
-                {
-                    "Op": "255",
-                    "Object": "128",
-                    "Key": "",
-                    "Value": ""
-                }
-            ]
-        }
-    ],
-    "MatchType": "FirstMatch"
-}
--- a/pkg/engine/chain_router.go
+++ b/pkg/engine/chain_router.go
@ -6,18 +6,18 @@ import (
 )

 type defaultChainRouter struct {
-	morph MorphRuleChainStorageReader
+	morph MorphRuleChainStorage

 	local LocalOverrideStorage
 }

-func NewDefaultChainRouter(morph MorphRuleChainStorageReader) ChainRouter {
+func NewDefaultChainRouter(morph MorphRuleChainStorage) ChainRouter {
 	return &defaultChainRouter{
 		morph: morph,
 	}
 }

-func NewDefaultChainRouterWithLocalOverrides(morph MorphRuleChainStorageReader, local LocalOverrideStorage) ChainRouter {
+func NewDefaultChainRouterWithLocalOverrides(morph MorphRuleChainStorage, local LocalOverrideStorage) ChainRouter {
 	return &defaultChainRouter{
 		morph: morph,
 		local: local,
@ -86,31 +86,23 @@ func (dr *defaultChainRouter) matchLocalOverrides(name chain.Name, target Target
 	if err != nil {
 		return
 	}
-	status, ruleFound = dr.getStatusFromChains(localOverrides, r)
+	for _, c := range localOverrides {
+		if status, ruleFound = c.Match(r); ruleFound && status != chain.Allow {
+			return
+		}
+	}
 	return
 }

 func (dr *defaultChainRouter) matchMorphRuleChains(name chain.Name, target Target, r resource.Request) (status chain.Status, ruleFound bool, err error) {
 	namespaceChains, err := dr.morph.ListMorphRuleChains(name, target)
 	if err != nil {
-		return chain.NoRuleFound, false, err
+		return
 	}
-	status, ruleFound = dr.getStatusFromChains(namespaceChains, r)
-	return
-}
-
-func (dr *defaultChainRouter) getStatusFromChains(chains []*chain.Chain, r resource.Request) (chain.Status, bool) {
-	var allow bool
-	for _, c := range chains {
-		if status, found := c.Match(r); found {
-			if status != chain.Allow {
-				return status, true
-			}
-			allow = true
+	for _, c := range namespaceChains {
+		if status, ruleFound = c.Match(r); ruleFound {
+			return
 		}
 	}
-	if allow {
-		return chain.Allow, true
-	}
-	return chain.NoRuleFound, false
+	return
 }
--- a/pkg/engine/inmemory/inmemory_test.go
+++ b/pkg/engine/inmemory/inmemory_test.go
@ -1,13 +1,11 @@
 package inmemory

 import (
-	"bytes"
 	"testing"

 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
 	resourcetest "git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource/testutil"
-	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
 	"github.com/stretchr/testify/require"
 )

@ -65,10 +63,6 @@ func TestInmemory(t *testing.T) {
 		},
 	})

-	_, it, err := s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-	require.NoError(t, err)
-	itemStacksEqual(t, it.Values, toStackItems(namespace))
-
 	s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.NamespaceTarget(namespace2), &chain.Chain{
 		Rules: []chain.Rule{
 			{ // Deny all expect "native::object::get" for all objects expect "native::object::abc/xyz".
@ -79,10 +73,6 @@ func TestInmemory(t *testing.T) {
 		},
 	})

-	_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-	require.NoError(t, err)
-	itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
 	s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.ContainerTarget(container), &chain.Chain{
 		Rules: []chain.Rule{
 			{ // Allow to actor2 to get objects from the specific container only if they have `Department=HR` attribute.
@ -107,14 +97,6 @@ func TestInmemory(t *testing.T) {
 		},
 	})

-	_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-	require.NoError(t, err)
-	itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
-	_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Container)
-	require.NoError(t, err)
-	itemStacksEqual(t, it.Values, toStackItems(container))
-
 	t.Run("bad subnet, namespace deny", func(t *testing.T) {
 		// Request initiating from the untrusted subnet.
 		reqBadIP := resourcetest.NewRequest("native::object::put", res, map[string]string{
@ -193,14 +175,6 @@ func TestInmemory(t *testing.T) {
 				}},
 			})

-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Container)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(container))
-
 			status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqGood)
 			require.Equal(t, chain.NoRuleFound, status)
 			require.False(t, ok)
@ -216,14 +190,6 @@ func TestInmemory(t *testing.T) {
 				}},
 			})

-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Container)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(container))
-
 			status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqGood)
 			require.Equal(t, chain.QuotaLimitReached, status)
 			require.True(t, ok)
@ -232,83 +198,9 @@ func TestInmemory(t *testing.T) {
 			err := s.LocalStorage().RemoveOverride(chain.Ingress, engine.ContainerTarget(container), quotaRuleChainID)
 			require.NoError(t, err)

-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Namespace)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(namespace, namespace2))
-
-			_, it, err = s.MorphRuleChainStorage().ListTargetsIterator(engine.Container)
-			require.NoError(t, err)
-			itemStacksEqual(t, it.Values, toStackItems(container))
-
 			status, ok, _ = s.IsAllowed(chain.Ingress, engine.NewRequestTarget(namespace, container), reqGood)
 			require.Equal(t, chain.NoRuleFound, status)
 			require.False(t, ok)
 		})
 	})
-
-	t.Run("remove all", func(t *testing.T) {
-		s := NewInMemoryLocalOverrides()
-		_, _, err := s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.NamespaceTarget(namespace), &chain.Chain{
-			Rules: []chain.Rule{
-				{
-					Status:    chain.AccessDenied,
-					Actions:   chain.Actions{Inverted: true, Names: []string{"native::object::get"}},
-					Resources: chain.Resources{Inverted: true, Names: []string{object}},
-				},
-			},
-		})
-		require.NoError(t, err)
-		_, _, err = s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.NamespaceTarget(namespace2), &chain.Chain{
-			Rules: []chain.Rule{
-				{
-					Status:    chain.Allow,
-					Actions:   chain.Actions{Inverted: true, Names: []string{"native::object::get"}},
-					Resources: chain.Resources{Inverted: true, Names: []string{object}},
-				},
-			},
-		})
-		require.NoError(t, err)
-		_, _, err = s.MorphRuleChainStorage().AddMorphRuleChain(chain.Ingress, engine.NamespaceTarget(namespace2), &chain.Chain{
-			Rules: []chain.Rule{
-				{
-					Status:    chain.AccessDenied,
-					Actions:   chain.Actions{Inverted: true, Names: []string{"native::object::get"}},
-					Resources: chain.Resources{Inverted: true, Names: []string{object}},
-				},
-			},
-		})
-		require.NoError(t, err)
-		_, _, err = s.MorphRuleChainStorage().RemoveMorphRuleChainsByTarget(chain.Ingress, engine.NamespaceTarget(namespace2))
-		require.NoError(t, err)
-		chains, err := s.MorphRuleChainStorage().ListMorphRuleChains(chain.Ingress, engine.NamespaceTarget(namespace2))
-		require.NoError(t, err)
-		require.Equal(t, 0, len(chains))
-		chains, err = s.MorphRuleChainStorage().ListMorphRuleChains(chain.Ingress, engine.NamespaceTarget(namespace))
-		require.NoError(t, err)
-		require.Equal(t, 1, len(chains))
-	})
-}
-
-func itemStacksEqual(t *testing.T, got []stackitem.Item, expected []stackitem.Item) {
-next:
-	for _, exp := range expected {
-		expBytes, err := exp.TryBytes()
-		require.NoError(t, err)
-		for _, v := range got {
-			vBytes, err := v.TryBytes()
-			require.NoError(t, err)
-			if bytes.Equal(vBytes, expBytes) {
-				continue next
-			}
-		}
-		t.Fatalf("not found %s", exp)
-	}
-}
-
-func toStackItems(names ...string) []stackitem.Item {
-	var items []stackitem.Item
-	for _, name := range names {
-		items = append(items, stackitem.NewByteArray([]byte(name)))
-	}
-	return items
 }
--- a/pkg/engine/inmemory/local_storage.go
+++ b/pkg/engine/inmemory/local_storage.go
@ -1,11 +1,9 @@
 package inmemory

 import (
-	"bytes"
 	"fmt"
 	"math/rand"
 	"strings"
-	"sync"

 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
@ -15,16 +13,14 @@ import (
 type targetToChain map[engine.Target][]*chain.Chain

 type inmemoryLocalStorage struct {
-	usedChainID          map[string]struct{}
+	usedChainID          map[chain.ID]struct{}
 	nameToResourceChains map[chain.Name]targetToChain
-	guard                *sync.RWMutex
 }

 func NewInmemoryLocalStorage() engine.LocalOverrideStorage {
 	return &inmemoryLocalStorage{
-		usedChainID:          map[string]struct{}{},
+		usedChainID:          map[chain.ID]struct{}{},
 		nameToResourceChains: make(map[chain.Name]targetToChain),
-		guard:                &sync.RWMutex{},
 	}
 }

@ -36,24 +32,20 @@ func (s *inmemoryLocalStorage) generateChainID(name chain.Name, target engine.Ta
 		sid = strings.ReplaceAll(sid, "*", "")
 		sid = strings.ReplaceAll(sid, "/", ":")
 		sid = strings.ReplaceAll(sid, "::", ":")
-		_, ok := s.usedChainID[sid]
+		id = chain.ID(sid)
+		_, ok := s.usedChainID[id]
 		if ok {
 			continue
 		}
-		s.usedChainID[sid] = struct{}{}
-
-		id = chain.ID(sid)
+		s.usedChainID[id] = struct{}{}
 		break
 	}
 	return id
 }

 func (s *inmemoryLocalStorage) AddOverride(name chain.Name, target engine.Target, c *chain.Chain) (chain.ID, error) {
-	s.guard.Lock()
-	defer s.guard.Unlock()
-
 	// AddOverride assigns generated chain ID if it has not been assigned.
-	if len(c.ID) == 0 {
+	if c.ID == "" {
 		c.ID = s.generateChainID(name, target)
 	}
 	if s.nameToResourceChains[name] == nil {
@ -61,7 +53,7 @@ func (s *inmemoryLocalStorage) AddOverride(name chain.Name, target engine.Target
 	}
 	rc := s.nameToResourceChains[name]
 	for i := range rc[target] {
-		if bytes.Equal(rc[target][i].ID, c.ID) {
+		if rc[target][i].ID == c.ID {
 			rc[target][i] = c
 			return c.ID, nil
 		}
@ -71,21 +63,15 @@ func (s *inmemoryLocalStorage) AddOverride(name chain.Name, target engine.Target
 }

 func (s *inmemoryLocalStorage) GetOverride(name chain.Name, target engine.Target, chainID chain.ID) (*chain.Chain, error) {
-	s.guard.RLock()
-	defer s.guard.RUnlock()
-
 	if _, ok := s.nameToResourceChains[name]; !ok {
 		return nil, engine.ErrChainNameNotFound
 	}
-	if target.Name == "" {
-		target.Name = "root"
-	}
 	chains, ok := s.nameToResourceChains[name][target]
 	if !ok {
 		return nil, engine.ErrResourceNotFound
 	}
 	for _, c := range chains {
-		if bytes.Equal(c.ID, chainID) {
+		if c.ID == chainID {
 			return c, nil
 		}
 	}
@ -93,21 +79,15 @@ func (s *inmemoryLocalStorage) GetOverride(name chain.Name, target engine.Target
 }

 func (s *inmemoryLocalStorage) RemoveOverride(name chain.Name, target engine.Target, chainID chain.ID) error {
-	s.guard.Lock()
-	defer s.guard.Unlock()
-
 	if _, ok := s.nameToResourceChains[name]; !ok {
 		return engine.ErrChainNameNotFound
 	}
-	if target.Name == "" {
-		target.Name = "root"
-	}
 	chains, ok := s.nameToResourceChains[name][target]
 	if !ok {
 		return engine.ErrResourceNotFound
 	}
 	for i, c := range chains {
-		if bytes.Equal(c.ID, chainID) {
+		if c.ID == chainID {
 			s.nameToResourceChains[name][target] = append(chains[:i], chains[i+1:]...)
 			return nil
 		}
@ -115,35 +95,11 @@ func (s *inmemoryLocalStorage) RemoveOverride(name chain.Name, target engine.Tar
 	return engine.ErrChainNotFound
 }

-func (s *inmemoryLocalStorage) RemoveOverridesByTarget(name chain.Name, target engine.Target) error {
-	s.guard.Lock()
-	defer s.guard.Unlock()
-
-	if _, ok := s.nameToResourceChains[name]; !ok {
-		return engine.ErrChainNameNotFound
-	}
-	if target.Name == "" {
-		target.Name = "root"
-	}
-	_, ok := s.nameToResourceChains[name][target]
-	if ok {
-		delete(s.nameToResourceChains[name], target)
-		return nil
-	}
-	return engine.ErrResourceNotFound
-}
-
 func (s *inmemoryLocalStorage) ListOverrides(name chain.Name, target engine.Target) ([]*chain.Chain, error) {
-	s.guard.RLock()
-	defer s.guard.RUnlock()
-
 	rcs, ok := s.nameToResourceChains[name]
 	if !ok {
 		return []*chain.Chain{}, nil
 	}
-	if target.Name == "" {
-		target.Name = "root"
-	}
 	for t, chains := range rcs {
 		if t.Type != target.Type {
 			continue
@ -157,20 +113,6 @@ func (s *inmemoryLocalStorage) ListOverrides(name chain.Name, target engine.Targ
 }

 func (s *inmemoryLocalStorage) DropAllOverrides(name chain.Name) error {
-	s.guard.Lock()
-	defer s.guard.Unlock()
-
 	s.nameToResourceChains[name] = make(targetToChain)
 	return nil
 }
-
-func (s *inmemoryLocalStorage) ListOverrideDefinedTargets(name chain.Name) ([]engine.Target, error) {
-	s.guard.RLock()
-	defer s.guard.RUnlock()
-	ttc := s.nameToResourceChains[name]
-	var keys []engine.Target
-	for k := range ttc {
-		keys = append(keys, k)
-	}
-	return keys, nil
-}
--- a/pkg/engine/inmemory/local_storage_test.go
+++ b/pkg/engine/inmemory/local_storage_test.go
@ -14,7 +14,9 @@ const (
 	nonExistChainId = "ingress:LxGyWyL"
 )

-var resrc = engine.ContainerTarget(container)
+var (
+	resrc = engine.ContainerTarget(container)
+)

 func testInmemLocalStorage() *inmemoryLocalStorage {
 	return NewInmemoryLocalStorage().(*inmemoryLocalStorage)
@ -110,52 +112,6 @@ func TestRemoveOverride(t *testing.T) {
 		require.True(t, ok)
 		require.Len(t, resourceChains, 0)
 	})
-
-	t.Run("remove by target", func(t *testing.T) {
-		inmem := testInmemLocalStorage()
-		t0 := engine.ContainerTarget("name0")
-		t1 := engine.ContainerTarget("name1")
-		inmem.AddOverride(chain.Ingress, t0, &chain.Chain{
-			ID: chain.ID(chainID),
-			Rules: []chain.Rule{
-				{
-					Status:    chain.AccessDenied,
-					Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-					Resources: chain.Resources{Names: []string{"native::object::*"}},
-				},
-			},
-		})
-		inmem.AddOverride(chain.Ingress, t0, &chain.Chain{
-			ID: chain.ID(chainID),
-			Rules: []chain.Rule{
-				{
-					Status:    chain.Allow,
-					Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-					Resources: chain.Resources{Names: []string{"native::object::*"}},
-				},
-			},
-		})
-		inmem.AddOverride(chain.Ingress, t1, &chain.Chain{
-			ID: chain.ID(chainID),
-			Rules: []chain.Rule{
-				{
-					Status:    chain.Allow,
-					Actions:   chain.Actions{Names: []string{"native::object::delete"}},
-					Resources: chain.Resources{Names: []string{"native::object::*"}},
-				},
-			},
-		})
-
-		err := inmem.RemoveOverridesByTarget(chain.Ingress, t0)
-		require.NoError(t, err)
-
-		ingressChains, ok := inmem.nameToResourceChains[chain.Ingress]
-		require.True(t, ok)
-		require.Len(t, ingressChains, 1)
-		resourceChains, ok := ingressChains[t1]
-		require.True(t, ok)
-		require.Len(t, resourceChains, 1)
-	})
 }

 func TestGetOverride(t *testing.T) {
@ -230,9 +186,6 @@ func TestListOverrides(t *testing.T) {
 		inmem.AddOverride(chain.Ingress, resrc, addChain)
 		l, _ := inmem.ListOverrides(chain.Ingress, resrc)
 		require.Len(t, l, 1)
-		targets, err := inmem.ListOverrideDefinedTargets(chain.Ingress)
-		require.NoError(t, err)
-		require.Equal(t, []engine.Target{resrc}, targets)
 	})

 	t.Run("list after drop", func(t *testing.T) {
@ -257,12 +210,12 @@ func TestGenerateID(t *testing.T) {
 }

 func hasDuplicates(ids []chain.ID) bool {
-	seen := make(map[string]bool)
+	seen := make(map[chain.ID]bool)
 	for _, id := range ids {
-		if seen[string(id)] {
+		if seen[id] {
 			return true
 		}
-		seen[string(id)] = true
+		seen[id] = true
 	}
 	return false
 }
--- a/pkg/engine/inmemory/morph_storage.go
+++ b/pkg/engine/inmemory/morph_storage.go
@ -3,26 +3,27 @@ package inmemory
 import (
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"github.com/google/uuid"
-	"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
 	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
 )

 type inmemoryMorphRuleChainStorage struct {
-	storage engine.LocalOverrideStorage
+	nameToNamespaceChains engine.LocalOverrideStorage
+	nameToContainerChains engine.LocalOverrideStorage
 }

 func NewInmemoryMorphRuleChainStorage() engine.MorphRuleChainStorage {
 	return &inmemoryMorphRuleChainStorage{
-		storage: NewInmemoryLocalStorage(),
+		nameToNamespaceChains: NewInmemoryLocalStorage(),
+		nameToContainerChains: NewInmemoryLocalStorage(),
 	}
 }

 func (s *inmemoryMorphRuleChainStorage) AddMorphRuleChain(name chain.Name, target engine.Target, c *chain.Chain) (_ util.Uint256, _ uint32, err error) {
 	switch target.Type {
-	case engine.Namespace, engine.Container:
-		_, err = s.storage.AddOverride(name, target, c)
+	case engine.Namespace:
+		_, err = s.nameToNamespaceChains.AddOverride(name, target, c)
+	case engine.Container:
+		_, err = s.nameToContainerChains.AddOverride(name, target, c)
 	default:
 		err = engine.ErrUnknownTarget
 	}
@ -31,18 +32,10 @@ func (s *inmemoryMorphRuleChainStorage) AddMorphRuleChain(name chain.Name, targe

 func (s *inmemoryMorphRuleChainStorage) RemoveMorphRuleChain(name chain.Name, target engine.Target, chainID chain.ID) (_ util.Uint256, _ uint32, err error) {
 	switch target.Type {
-	case engine.Namespace, engine.Container:
-		err = s.storage.RemoveOverride(name, target, chainID)
-	default:
-		err = engine.ErrUnknownTarget
-	}
-	return
-}
-
-func (s *inmemoryMorphRuleChainStorage) RemoveMorphRuleChainsByTarget(name chain.Name, target engine.Target) (_ util.Uint256, _ uint32, err error) {
-	switch target.Type {
-	case engine.Namespace, engine.Container:
-		err = s.storage.RemoveOverridesByTarget(name, target)
+	case engine.Namespace:
+		err = s.nameToNamespaceChains.RemoveOverride(name, target, chainID)
+	case engine.Container:
+		err = s.nameToContainerChains.RemoveOverride(name, target, chainID)
 	default:
 		err = engine.ErrUnknownTarget
 	}
@ -51,62 +44,11 @@ func (s *inmemoryMorphRuleChainStorage) RemoveMorphRuleChainsByTarget(name chain

 func (s *inmemoryMorphRuleChainStorage) ListMorphRuleChains(name chain.Name, target engine.Target) ([]*chain.Chain, error) {
 	switch target.Type {
-	case engine.Namespace, engine.Container:
-		return s.storage.ListOverrides(name, target)
+	case engine.Namespace:
+		return s.nameToNamespaceChains.ListOverrides(name, target)
+	case engine.Container:
+		return s.nameToContainerChains.ListOverrides(name, target)
 	default:
 	}
 	return nil, engine.ErrUnknownTarget
 }
-
-func (s *inmemoryMorphRuleChainStorage) GetAdmin() (util.Uint160, error) {
-	panic("not implemented")
-}
-
-func (s *inmemoryMorphRuleChainStorage) SetAdmin(_ util.Uint160) (util.Uint256, uint32, error) {
-	panic("not implemented")
-}
-
-func (s *inmemoryMorphRuleChainStorage) ListTargetsIterator(targetType engine.TargetType) (uuid uuid.UUID, it result.Iterator, err error) {
-	it.Values = make([]stackitem.Item, 0)
-
-	switch targetType {
-	case engine.Namespace:
-		// Listing targets may look bizarre, because inmemory rule chain storage use inmemory local overrides where
-		// targets are listed by chain names.
-		var targets []engine.Target
-		targets, err = s.storage.ListOverrideDefinedTargets(chain.Ingress)
-		if err != nil {
-			return
-		}
-		for _, t := range targets {
-			it.Values = append(it.Values, stackitem.NewByteArray([]byte(t.Name)))
-		}
-
-		targets, err = s.storage.ListOverrideDefinedTargets(chain.S3)
-		if err != nil {
-			return
-		}
-		for _, t := range targets {
-			it.Values = append(it.Values, stackitem.NewByteArray([]byte(t.Name)))
-		}
-	case engine.Container:
-		var targets []engine.Target
-		targets, err = s.storage.ListOverrideDefinedTargets(chain.Ingress)
-		if err != nil {
-			return
-		}
-		for _, t := range targets {
-			it.Values = append(it.Values, stackitem.NewByteArray([]byte(t.Name)))
-		}
-
-		targets, err = s.storage.ListOverrideDefinedTargets(chain.S3)
-		if err != nil {
-			return
-		}
-		for _, t := range targets {
-			it.Values = append(it.Values, stackitem.NewByteArray([]byte(t.Name)))
-		}
-	default:
-	}
-	return
-}
--- a/pkg/engine/interface.go
+++ b/pkg/engine/interface.go
@ -3,8 +3,6 @@ package engine
 import (
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
-	"github.com/google/uuid"
-	"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 )

@ -23,13 +21,9 @@ type LocalOverrideStorage interface {

 	RemoveOverride(name chain.Name, target Target, chainID chain.ID) error

-	RemoveOverridesByTarget(name chain.Name, target Target) error
-
 	ListOverrides(name chain.Name, target Target) ([]*chain.Chain, error)

 	DropAllOverrides(name chain.Name) error
-
-	ListOverrideDefinedTargets(name chain.Name) ([]Target, error)
 }

 type TargetType rune
@ -74,12 +68,12 @@ func NewRequestTarget(namespace, container string) RequestTarget {
 }

 func (rt *RequestTarget) Targets() (targets []Target) {
-	if rt.Namespace != nil {
-		targets = append(targets, *rt.Namespace)
-	}
 	if rt.Container != nil {
 		targets = append(targets, *rt.Container)
 	}
+	if rt.Namespace != nil {
+		targets = append(targets, *rt.Namespace)
+	}
 	return
 }

@ -97,33 +91,17 @@ func ContainerTarget(container string) Target {
 	}
 }

-// MorphRuleChainStorageReader is the interface that provides read-only methods to receive
-// data like chains, target or admin from a chain storage.
-type MorphRuleChainStorageReader interface {
-	// ListMorphRuleChains just lists deserialized chains.
-	ListMorphRuleChains(name chain.Name, target Target) ([]*chain.Chain, error)
-
-	GetAdmin() (util.Uint160, error)
-
-	// ListTargetsIterator provides an iterator to list targets for which rules are defined.
-	ListTargetsIterator(targetType TargetType) (uuid.UUID, result.Iterator, error)
-}
-
-// MorphRuleChainStorage is the interface to read and manage data within a chain storage.
+// MorphRuleChainStorage is the interface to manage chains from the chain storage.
 // Basically, this implies that the storage manages rules stored in policy contract.
 type MorphRuleChainStorage interface {
-	MorphRuleChainStorageReader
-
 	// AddMorphRuleChain adds a chain rule to the policy contract and returns transaction hash, VUB and error.
 	AddMorphRuleChain(name chain.Name, target Target, c *chain.Chain) (util.Uint256, uint32, error)

 	// RemoveMorphRuleChain removes a chain rule to the policy contract and returns transaction hash, VUB and error.
 	RemoveMorphRuleChain(name chain.Name, target Target, chainID chain.ID) (util.Uint256, uint32, error)

-	// RemoveMorphRuleChainsByTarget removes all chains by target and returns transaction hash, VUB and error.
-	RemoveMorphRuleChainsByTarget(name chain.Name, target Target) (util.Uint256, uint32, error)
-
-	SetAdmin(addr util.Uint160) (util.Uint256, uint32, error)
+	// ListMorphRuleChains just lists deserialized chains.
+	ListMorphRuleChains(name chain.Name, target Target) ([]*chain.Chain, error)
 }

 // Engine is the interface that provides methods to check request permissions checking
--- a/pkg/marshal/marshal.go
+++ b/pkg/marshal/marshal.go
@ -1,267 +0,0 @@
-package marshal
-
-import (
-	"encoding/binary"
-	"fmt"
-)
-
-const (
-	Version byte = 0 // increase if breaking change
-
-	ByteSize  int = 1
-	UInt8Size int = ByteSize
-	BoolSize  int = ByteSize
-
-	nilSlice     int64 = -1
-	nilSliceSize int   = 1
-
-	byteTrue  uint8 = 1
-	byteFalse uint8 = 0
-
-	// maxSliceLen taken from https://github.com/neo-project/neo/blob/38218bbee5bbe8b33cd8f9453465a19381c9a547/src/Neo/IO/Helper.cs#L77
-	maxSliceLen = 0x1000000
-)
-
-type MarshallerError struct {
-	errMsg string
-	offset int
-}
-
-func (e *MarshallerError) Error() string {
-	if e == nil {
-		return ""
-	}
-	if e.offset < 0 {
-		return e.errMsg
-	}
-	return fmt.Sprintf("%s (offset: %d)", e.errMsg, e.offset)
-}
-
-func errBufTooSmall(t string, marshal bool, offset int) error {
-	action := "unmarshal"
-	if marshal {
-		action = "marshal"
-	}
-	return &MarshallerError{
-		errMsg: fmt.Sprintf("not enough bytes left to %s value of type '%s'", action, t),
-		offset: offset,
-	}
-}
-
-func VerifyMarshal(buf []byte, lastOffset int) error {
-	if len(buf) != lastOffset {
-		return &MarshallerError{
-			errMsg: "actual data size differs from expected",
-			offset: -1,
-		}
-	}
-	return nil
-}
-
-func VerifyUnmarshal(buf []byte, lastOffset int) error {
-	if len(buf) != lastOffset {
-		return &MarshallerError{
-			errMsg: "unmarshalled bytes left",
-		}
-	}
-	return nil
-}
-
-func SliceSize[T any](slice []T, sizeOf func(T) int) int {
-	if slice == nil {
-		return nilSliceSize
-	}
-	s := Int64Size(int64(len(slice)))
-	for _, v := range slice {
-		s += sizeOf(v)
-	}
-	return s
-}
-
-func SliceMarshal[T any](buf []byte, offset int, slice []T, marshalT func([]byte, int, T) (int, error)) (int, error) {
-	if slice == nil {
-		return Int64Marshal(buf, offset, nilSlice)
-	}
-	if len(slice) > maxSliceLen {
-		return 0, &MarshallerError{
-			errMsg: fmt.Sprintf("slice size if too big: '%d'", len(slice)),
-			offset: offset,
-		}
-	}
-	offset, err := Int64Marshal(buf, offset, int64(len(slice)))
-	if err != nil {
-		return 0, err
-	}
-	for _, v := range slice {
-		offset, err = marshalT(buf, offset, v)
-		if err != nil {
-			return 0, err
-		}
-	}
-	return offset, nil
-}
-
-func SliceUnmarshal[T any](buf []byte, offset int, unmarshalT func(buf []byte, offset int) (T, int, error)) ([]T, int, error) {
-	size, offset, err := Int64Unmarshal(buf, offset)
-	if err != nil {
-		return nil, 0, err
-	}
-	if size == nilSlice {
-		return nil, offset, nil
-	}
-	if size > maxSliceLen {
-		return nil, 0, &MarshallerError{
-			errMsg: fmt.Sprintf("slice size if too big: '%d'", size),
-			offset: offset,
-		}
-	}
-	if size < 0 {
-		return nil, 0, &MarshallerError{
-			errMsg: fmt.Sprintf("invalid slice size: '%d'", size),
-			offset: offset,
-		}
-	}
-	result := make([]T, size)
-	for idx := 0; idx < len(result); idx++ {
-		result[idx], offset, err = unmarshalT(buf, offset)
-		if err != nil {
-			return nil, 0, err
-		}
-	}
-	return result, offset, nil
-}
-
-func Int64Size(v int64) int {
-	// https://cs.opensource.google/go/go/+/master:src/encoding/binary/varint.go;l=92;drc=dac9b9ddbd5160c5f4552410f5f8281bd5eed38c
-	// and
-	// https://cs.opensource.google/go/go/+/master:src/encoding/binary/varint.go;l=41;drc=dac9b9ddbd5160c5f4552410f5f8281bd5eed38c
-	ux := uint64(v) << 1
-	if v < 0 {
-		ux = ^ux
-	}
-	s := 0
-	for ux >= 0x80 {
-		s++
-		ux >>= 7
-	}
-	return s + 1
-}
-
-func Int64Marshal(buf []byte, offset int, v int64) (int, error) {
-	if len(buf)-offset < Int64Size(v) {
-		return 0, errBufTooSmall("int64", true, offset)
-	}
-	return offset + binary.PutVarint(buf[offset:], v), nil
-}
-
-func Int64Unmarshal(buf []byte, offset int) (int64, int, error) {
-	v, read := binary.Varint(buf[offset:])
-	if read == 0 {
-		return 0, 0, errBufTooSmall("int64", false, offset)
-	}
-	if read < 0 {
-		return 0, 0, &MarshallerError{
-			errMsg: "int64 unmarshal overflow",
-			offset: offset,
-		}
-	}
-	return v, offset + read, nil
-}
-
-func StringSize(s string) int {
-	return Int64Size(int64(len(s))) + len(s)
-}
-
-func StringMarshal(buf []byte, offset int, s string) (int, error) {
-	if len(s) > maxSliceLen {
-		return 0, &MarshallerError{
-			errMsg: fmt.Sprintf("string is too long: '%d'", len(s)),
-			offset: offset,
-		}
-	}
-	if len(buf)-offset < Int64Size(int64(len(s)))+len(s) {
-		return 0, errBufTooSmall("string", true, offset)
-	}
-
-	offset, err := Int64Marshal(buf, offset, int64(len(s)))
-	if err != nil {
-		return 0, err
-	}
-	if s == "" {
-		return offset, nil
-	}
-	return offset + copy(buf[offset:], s), nil
-}
-
-func StringUnmarshal(buf []byte, offset int) (string, int, error) {
-	size, offset, err := Int64Unmarshal(buf, offset)
-	if err != nil {
-		return "", 0, err
-	}
-	if size == 0 {
-		return "", offset, nil
-	}
-	if size > maxSliceLen {
-		return "", 0, &MarshallerError{
-			errMsg: fmt.Sprintf("string is too long: '%d'", size),
-			offset: offset,
-		}
-	}
-	if size < 0 {
-		return "", 0, &MarshallerError{
-			errMsg: fmt.Sprintf("invalid string size: '%d'", size),
-			offset: offset,
-		}
-	}
-	if len(buf)-offset < int(size) {
-		return "", 0, errBufTooSmall("string", false, offset)
-	}
-	return string(buf[offset : offset+int(size)]), offset + int(size), nil
-}
-
-func UInt8Marshal(buf []byte, offset int, value uint8) (int, error) {
-	if len(buf)-offset < 1 {
-		return 0, errBufTooSmall("uint8", true, offset)
-	}
-	buf[offset] = value
-	return offset + 1, nil
-}
-
-func UInt8Unmarshal(buf []byte, offset int) (uint8, int, error) {
-	if len(buf)-offset < 1 {
-		return 0, 0, errBufTooSmall("uint8", false, offset)
-	}
-	return buf[offset], offset + 1, nil
-}
-
-func ByteMarshal(buf []byte, offset int, value byte) (int, error) {
-	return UInt8Marshal(buf, offset, value)
-}
-
-func ByteUnmarshal(buf []byte, offset int) (byte, int, error) {
-	return UInt8Unmarshal(buf, offset)
-}
-
-func BoolMarshal(buf []byte, offset int, value bool) (int, error) {
-	if value {
-		return UInt8Marshal(buf, offset, byteTrue)
-	}
-	return UInt8Marshal(buf, offset, byteFalse)
-}
-
-func BoolUnmarshal(buf []byte, offset int) (bool, int, error) {
-	v, offset, err := UInt8Unmarshal(buf, offset)
-	if err != nil {
-		return false, 0, err
-	}
-	if v == byteTrue {
-		return true, offset, nil
-	}
-	if v == byteFalse {
-		return false, offset, nil
-	}
-	return false, 0, &MarshallerError{
-		errMsg: fmt.Sprintf("invalid marshalled value for bool: %d", v),
-		offset: offset - BoolSize,
-	}
-}
--- a/pkg/marshal/marshal_test.go
+++ b/pkg/marshal/marshal_test.go
@ -1,313 +0,0 @@
-package marshal
-
-import (
-	"encoding/binary"
-	"math"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestMarshalling(t *testing.T) {
-	t.Parallel()
-	t.Run("slice", func(t *testing.T) {
-		t.Parallel()
-		t.Run("nil slice", func(t *testing.T) {
-			t.Parallel()
-
-			var int64s []int64
-			expectedSize := SliceSize(int64s, Int64Size)
-			require.Equal(t, 1, expectedSize)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			result, offset, err := SliceUnmarshal(buf, 0, Int64Unmarshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.Nil(t, result)
-		})
-
-		t.Run("empty slice", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 0)
-			expectedSize := SliceSize(int64s, Int64Size)
-			require.Equal(t, 1, expectedSize)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			result, offset, err := SliceUnmarshal(buf, 0, Int64Unmarshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.NotNil(t, result)
-			require.Len(t, result, 0)
-		})
-
-		t.Run("non empty slice", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 100)
-			for i := range int64s {
-				int64s[i] = int64(i)
-			}
-			expectedSize := SliceSize(int64s, Int64Size)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			result, offset, err := SliceUnmarshal(buf, 0, Int64Unmarshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.Equal(t, int64s, result)
-		})
-
-		t.Run("corrupted slice size", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 100)
-			for i := range int64s {
-				int64s[i] = int64(i)
-			}
-			expectedSize := SliceSize(int64s, Int64Size)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			for i := 0; i < binary.MaxVarintLen64; i++ {
-				buf[i] = 129
-			}
-
-			_, _, err = SliceUnmarshal(buf, 0, Int64Unmarshal)
-			var mErr *MarshallerError
-			require.ErrorAs(t, err, &mErr)
-
-			for i := 0; i < binary.MaxVarintLen64; i++ {
-				buf[i] = 127
-			}
-			_, _, err = SliceUnmarshal(buf, 0, Int64Unmarshal)
-			require.ErrorAs(t, err, &mErr)
-		})
-
-		t.Run("corrupted slice item", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 100)
-			for i := range int64s {
-				int64s[i] = int64(i)
-			}
-			expectedSize := SliceSize(int64s, Int64Size)
-			buf := make([]byte, expectedSize)
-			offset, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			for i := 2; i < binary.MaxVarintLen64+2; i++ {
-				buf[i] = 129
-			}
-
-			_, _, err = SliceUnmarshal(buf, 0, Int64Unmarshal)
-			var mErr *MarshallerError
-			require.ErrorAs(t, err, &mErr)
-		})
-
-		t.Run("small buffer", func(t *testing.T) {
-			t.Parallel()
-
-			int64s := make([]int64, 100)
-			for i := range int64s {
-				int64s[i] = int64(i)
-			}
-			buf := make([]byte, 1)
-			_, err := SliceMarshal(buf, 0, int64s, Int64Marshal)
-			var mErr *MarshallerError
-			require.ErrorAs(t, err, &mErr)
-
-			buf = make([]byte, 10)
-			_, err = SliceMarshal(buf, 0, int64s, Int64Marshal)
-			require.ErrorAs(t, err, &mErr)
-		})
-	})
-
-	t.Run("int64", func(t *testing.T) {
-		t.Parallel()
-
-		t.Run("success", func(t *testing.T) {
-			t.Parallel()
-
-			require.Equal(t, 1, Int64Size(0))
-			require.Equal(t, binary.MaxVarintLen64, Int64Size(math.MaxInt64))
-			require.Equal(t, binary.MaxVarintLen64, Int64Size(math.MinInt64))
-
-			for _, v := range []int64{0, math.MinInt64, math.MaxInt64} {
-				size := Int64Size(v)
-				buf := make([]byte, size)
-				offset, err := Int64Marshal(buf, 0, v)
-				require.NoError(t, err)
-				require.NoError(t, VerifyMarshal(buf, offset))
-
-				uv, offset, err := Int64Unmarshal(buf, 0)
-				require.NoError(t, err)
-				require.NoError(t, VerifyUnmarshal(buf, offset))
-				require.Equal(t, v, uv)
-			}
-		})
-
-		t.Run("invalid buffer", func(t *testing.T) {
-			t.Parallel()
-
-			var mErr *MarshallerError
-
-			_, err := Int64Marshal([]byte{}, 0, 100500)
-			require.ErrorAs(t, err, &mErr)
-
-			_, _, err = Int64Unmarshal(nil, 0)
-			require.ErrorAs(t, err, &mErr)
-		})
-
-		t.Run("overflow", func(t *testing.T) {
-			t.Parallel()
-
-			var mErr *MarshallerError
-
-			var v int64 = math.MaxInt64
-			buf := make([]byte, Int64Size(v))
-			_, err := Int64Marshal(buf, 0, v)
-			require.NoError(t, err)
-
-			buf[9] = 2
-
-			_, _, err = Int64Unmarshal(buf, 0)
-			require.ErrorAs(t, err, &mErr)
-		})
-	})
-
-	t.Run("string", func(t *testing.T) {
-		t.Parallel()
-
-		t.Run("success", func(t *testing.T) {
-			t.Parallel()
-			for _, v := range []string{
-				"", "arn:aws:iam::namespace:group/some_group", "$Object:homomorphicHash",
-				"native:container/ns/9LPLUFZpEmfidG4n44vi2cjXKXSqWT492tCvLJiJ8W1J",
-			} {
-				size := StringSize(v)
-				buf := make([]byte, size)
-				offset, err := StringMarshal(buf, 0, v)
-				require.NoError(t, err)
-				require.NoError(t, VerifyMarshal(buf, offset))
-
-				uv, offset, err := StringUnmarshal(buf, 0)
-				require.NoError(t, err)
-				require.NoError(t, VerifyUnmarshal(buf, offset))
-				require.Equal(t, v, uv)
-			}
-		})
-
-		t.Run("invalid buffer", func(t *testing.T) {
-			t.Parallel()
-
-			str := "avada kedavra"
-
-			var mErr *MarshallerError
-			_, err := StringMarshal(nil, 0, str)
-			require.ErrorAs(t, err, &mErr)
-
-			_, _, err = StringUnmarshal(nil, 0)
-			require.ErrorAs(t, err, &mErr)
-
-			buf := make([]byte, StringSize(str))
-			offset, err := StringMarshal(buf, 0, str)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-			buf = buf[:len(buf)-1]
-			_, _, err = StringUnmarshal(buf, 0)
-			require.ErrorAs(t, err, &mErr)
-		})
-	})
-
-	t.Run("uint8, byte", func(t *testing.T) {
-		t.Parallel()
-
-		for _, v := range []byte{0, 8, 16, 32, 64, 128, 255} {
-			buf := make([]byte, ByteSize)
-			offset, err := ByteMarshal(buf, 0, v)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			ub, offset, err := ByteUnmarshal(buf, 0)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.Equal(t, v, ub)
-
-			buf = make([]byte, UInt8Size)
-			offset, err = UInt8Marshal(buf, 0, v)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			uu, offset, err := UInt8Unmarshal(buf, 0)
-			require.NoError(t, err)
-			require.NoError(t, VerifyUnmarshal(buf, offset))
-			require.Equal(t, v, uu)
-		}
-	})
-
-	t.Run("bool", func(t *testing.T) {
-		t.Parallel()
-
-		t.Run("success", func(t *testing.T) {
-			t.Parallel()
-			for _, v := range []bool{false, true} {
-				buf := make([]byte, BoolSize)
-				offset, err := BoolMarshal(buf, 0, v)
-				require.NoError(t, err)
-				require.NoError(t, VerifyMarshal(buf, offset))
-
-				ub, offset, err := BoolUnmarshal(buf, 0)
-				require.NoError(t, err)
-				require.NoError(t, VerifyUnmarshal(buf, offset))
-				require.Equal(t, v, ub)
-			}
-		})
-
-		t.Run("invalid value", func(t *testing.T) {
-			t.Parallel()
-			buf := make([]byte, BoolSize)
-			offset, err := BoolMarshal(buf, 0, true)
-			require.NoError(t, err)
-			require.NoError(t, VerifyMarshal(buf, offset))
-
-			buf[0] = 2
-
-			_, _, err = BoolUnmarshal(buf, 0)
-			var mErr *MarshallerError
-			require.ErrorAs(t, err, &mErr)
-		})
-
-		t.Run("invalid buffer", func(t *testing.T) {
-			t.Parallel()
-			var mErr *MarshallerError
-
-			_, err := BoolMarshal(nil, 0, true)
-			require.ErrorAs(t, err, &mErr)
-
-			buf := append(make([]byte, BoolSize), 100)
-			offset, err := BoolMarshal(buf, 0, true)
-			require.NoError(t, err)
-			require.ErrorAs(t, VerifyMarshal(buf, offset), &mErr)
-
-			v, offset, err := BoolUnmarshal(buf, 0)
-			require.NoError(t, err)
-			require.True(t, v)
-			require.ErrorAs(t, VerifyUnmarshal(buf, offset), &mErr)
-
-			_, _, err = BoolUnmarshal(nil, 0)
-			require.ErrorAs(t, err, &mErr)
-		})
-	})
-}
--- a/pkg/morph/policy/policy_contract_storage.go
+++ b/pkg/morph/policy/policy_contract_storage.go
@ -10,8 +10,7 @@ import (
 	client "git.frostfs.info/TrueCloudLab/frostfs-contract/rpcclient/policy"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
-	"github.com/google/uuid"
-	"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
+	"github.com/mr-tron/base58"
 	"github.com/nspcc-dev/neo-go/pkg/rpcclient/actor"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
@ -24,20 +23,13 @@ var (
 	ErrEngineTargetTypeUnsupported = errors.New("this target type is not supported yet")
 )

-// ContractStorage is the interface to manage chain rules within Policy contract.
+// ContractStorage is the interface to manage chain rules within the policy contract.
 type ContractStorage struct {
 	contractInterface *client.Contract
 }

 var _ engine.MorphRuleChainStorage = (*ContractStorage)(nil)

-// ContractStorageReader is the interface to read data from Policy contract.
-type ContractStorageReader struct {
-	contractReaderInterface *client.ContractReader
-}
-
-var _ engine.MorphRuleChainStorageReader = (*ContractStorageReader)(nil)
-
 func NewContractStorage(actor client.Actor, contract util.Uint160) *ContractStorage {
 	return &ContractStorage{
 		contractInterface: client.New(actor, contract),
@ -52,8 +44,18 @@ func NewContractStorageWithSimpleActor(rpcActor actor.RPCActor, acc *wallet.Acco
 	return NewContractStorage(act, contract), nil
 }

+func transformNameIfContainer(target engine.Target) (name string) {
+	name = target.Name
+	if target.Type == engine.Container {
+		// Container name can be too long and, thus, cannot be
+		// used as a key name for policy-contract storage.
+		name = base58.FastBase58Encoding([]byte(target.Name))
+	}
+	return
+}
+
 func (s *ContractStorage) AddMorphRuleChain(name chain.Name, target engine.Target, c *chain.Chain) (txHash util.Uint256, vub uint32, err error) {
-	if len(c.ID) == 0 {
+	if c.ID == "" {
 		err = ErrEmptyChainID
 		return
 	}
@ -64,13 +66,14 @@ func (s *ContractStorage) AddMorphRuleChain(name chain.Name, target engine.Targe
 		return
 	}
 	fullName := prefixedChainName(name, c.ID)
+	targetName := transformNameIfContainer(target)

-	txHash, vub, err = s.contractInterface.AddChain(big.NewInt(int64(kind)), target.Name, fullName, c.Bytes())
+	txHash, vub, err = s.contractInterface.AddChain(big.NewInt(int64(kind)), targetName, fullName, c.Bytes())
 	return
 }

 func (s *ContractStorage) RemoveMorphRuleChain(name chain.Name, target engine.Target, chainID chain.ID) (txHash util.Uint256, vub uint32, err error) {
-	if len(chainID) == 0 {
+	if chainID == "" {
 		err = ErrEmptyChainID
 		return
 	}
@ -81,20 +84,9 @@ func (s *ContractStorage) RemoveMorphRuleChain(name chain.Name, target engine.Ta
 		return
 	}
 	fullName := prefixedChainName(name, chainID)
+	targetName := transformNameIfContainer(target)

-	txHash, vub, err = s.contractInterface.RemoveChain(big.NewInt(int64(kind)), target.Name, fullName)
-	return
-}
-
-func (s *ContractStorage) RemoveMorphRuleChainsByTarget(name chain.Name, target engine.Target) (txHash util.Uint256, vub uint32, err error) {
-	var kind policy.Kind
-	kind, err = policyKind(target.Type)
-	if err != nil {
-		return
-	}
-	fullName := prefixedChainName(name, nil)
-
-	txHash, vub, err = s.contractInterface.RemoveChainsByPrefix(big.NewInt(int64(kind)), target.Name, fullName)
+	txHash, vub, err = s.contractInterface.RemoveChain(big.NewInt(int64(kind)), targetName, fullName)
 	return
 }

@ -103,8 +95,9 @@ func (s *ContractStorage) ListMorphRuleChains(name chain.Name, target engine.Tar
 	if err != nil {
 		return nil, err
 	}
+	targetName := transformNameIfContainer(target)

-	items, err := s.contractInterface.ListChainsByPrefix(big.NewInt(int64(kind)), target.Name, []byte(name))
+	items, err := s.contractInterface.ListChainsByPrefix(big.NewInt(int64(kind)), targetName, []byte(name))
 	if err != nil {
 		return nil, err
 	}
@ -125,71 +118,16 @@ func (s *ContractStorage) ListMorphRuleChains(name chain.Name, target engine.Tar
 	return chains, nil
 }

-func (s *ContractStorage) ListTargetsIterator(targetType engine.TargetType) (uuid.UUID, result.Iterator, error) {
-	kind, err := policyKind(targetType)
-	if err != nil {
-		return uuid.UUID{}, result.Iterator{}, err
-	}
-	return s.contractInterface.ListTargets(big.NewInt(int64(kind)))
-}
-
-func (s *ContractStorage) GetAdmin() (util.Uint160, error) {
-	return s.contractInterface.GetAdmin()
-}
-
-func (s *ContractStorage) SetAdmin(addr util.Uint160) (util.Uint256, uint32, error) {
-	return s.contractInterface.SetAdmin(addr)
-}
-
-func NewContractStorageReader(inv client.Invoker, contract util.Uint160) *ContractStorageReader {
-	return &ContractStorageReader{
-		contractReaderInterface: client.NewReader(inv, contract),
-	}
-}
-
-func (s *ContractStorageReader) ListMorphRuleChains(name chain.Name, target engine.Target) ([]*chain.Chain, error) {
-	kind, err := policyKind(target.Type)
-	if err != nil {
-		return nil, err
-	}
-
-	items, err := s.contractReaderInterface.ListChainsByPrefix(big.NewInt(int64(kind)), target.Name, []byte(name))
-	if err != nil {
-		return nil, err
-	}
-
-	var chains []*chain.Chain
-	for _, item := range items {
-		serialized, err := bytesFromStackItem(item)
-		if err != nil {
-			return nil, err
-		}
-		c := new(chain.Chain)
-		if err := c.DecodeBytes(serialized); err != nil {
-			return nil, err
-		}
-		chains = append(chains, c)
-	}
-
-	return chains, nil
-}
-
-func (s *ContractStorageReader) GetAdmin() (util.Uint160, error) {
-	return s.contractReaderInterface.GetAdmin()
-}
-
-func (s *ContractStorageReader) ListTargetsIterator(targetType engine.TargetType) (uuid.UUID, result.Iterator, error) {
-	kind, err := policyKind(targetType)
-	if err != nil {
-		return uuid.UUID{}, result.Iterator{}, err
-	}
-	return s.contractReaderInterface.ListTargets(big.NewInt(int64(kind)))
-}
-
 func bytesFromStackItem(param stackitem.Item) ([]byte, error) {
 	switch param.Type() {
-	case stackitem.BufferT, stackitem.ByteArrayT, stackitem.IntegerT:
+	case stackitem.BufferT, stackitem.ByteArrayT:
 		return param.TryBytes()
+	case stackitem.IntegerT:
+		n, err := param.TryInteger()
+		if err != nil {
+			return nil, fmt.Errorf("can't parse integer bytes: %w", err)
+		}
+		return n.Bytes(), nil
 	case stackitem.AnyT:
 		if param.Value() == nil {
 			return nil, nil
--- a/schema/common/consts.go
+++ b/schema/common/consts.go
@ -1,5 +0,0 @@
-package common
-
-const (
-	PropertyKeyFrostFSIDGroupID = "frostfsid:groupID"
-)
--- a/schema/native/consts.go
+++ b/schema/native/consts.go
@ -9,16 +9,6 @@ const (
 	MethodRangeObject  = "RangeObject"
 	MethodHashObject   = "HashObject"

-	MethodPutContainer     = "PutContainer"
-	MethodDeleteContainer  = "DeleteContainer"
-	MethodGetContainer     = "GetContainer"
-	MethodListContainers   = "ListContainers"
-	MethodSetContainerEACL = "SetContainerEACL"
-	MethodGetContainerEACL = "GetContainerEACL"
-
-	ObjectPrefix    = "native:object"
-	ContainerPrefix = "native:container"
-
 	ResourceFormatNamespaceObjects          = "native:object/%s/*"
 	ResourceFormatNamespaceContainerObjects = "native:object/%s/%s/*"
 	ResourceFormatNamespaceContainerObject  = "native:object/%s/%s/%s"
@ -37,9 +27,8 @@ const (

 	ResourceFormatAllContainers = "native:container/*"

-	PropertyKeyActorPublicKey = "$Actor:publicKey"
-	PropertyKeyActorRole      = "$Actor:role"
-
+	PropertyKeyActorPublicKey        = "$Actor:publicKey"
+	PropertyKeyActorRole             = "$Actor:role"
 	PropertyKeyObjectVersion         = "$Object:version"
 	PropertyKeyObjectID              = "$Object:objectID"
 	PropertyKeyObjectContainerID     = "$Object:containerID"
@ -49,11 +38,4 @@ const (
 	PropertyKeyObjectPayloadHash     = "$Object:payloadHash"
 	PropertyKeyObjectType            = "$Object:objectType"
 	PropertyKeyObjectHomomorphicHash = "$Object:homomorphicHash"
-
-	PropertyKeyContainerOwnerID = "$Container:ownerID"
-
-	PropertyValueContainerRoleOwner     = "owner"
-	PropertyValueContainerRoleIR        = "ir"
-	PropertyValueContainerRoleContainer = "container"
-	PropertyValueContainerRoleOthers    = "others"
 )
--- a/schema/native/util/validation.go
+++ b/schema/native/util/validation.go
@ -1,45 +0,0 @@
-package util
-
-import (
-	"strings"
-
-	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
-)
-
-var nativePatterns = []string{
-	native.ResourceFormatNamespaceObjects, native.ResourceFormatNamespaceContainerObjects,
-	native.ResourceFormatNamespaceContainerObject, native.ResourceFormatRootObjects,
-	native.ResourceFormatRootContainerObjects, native.ResourceFormatRootContainerObject,
-	native.ResourceFormatAllObjects, native.ResourceFormatNamespaceContainer,
-	native.ResourceFormatNamespaceContainers, native.ResourceFormatRootContainer,
-	native.ResourceFormatRootContainers, native.ResourceFormatAllContainers,
-}
-
-func match(resource, pattern string) bool {
-	rTokens := strings.Split(resource, "/")
-	pToken := strings.Split(pattern, "/")
-
-	if len(rTokens) != len(pToken) {
-		return false
-	}
-
-	for i := range rTokens {
-		if pToken[i] == "%s" {
-			continue
-		}
-		if pToken[i] != rTokens[i] {
-			return false
-		}
-	}
-
-	return true
-}
-
-func IsNativeResourceNameValid(resource string) bool {
-	for _, pattern := range nativePatterns {
-		if match(resource, pattern) {
-			return true
-		}
-	}
-	return false
-}
--- a/schema/native/util/validation_test.go
+++ b/schema/native/util/validation_test.go
@ -1,97 +0,0 @@
-package util
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-var tests = []struct {
-	name     string
-	expected bool
-	resource string
-}{
-	{
-		name:     "ResourceFormatNamespaceObjects",
-		expected: true,
-		resource: "native:object/RootNamespace/*",
-	},
-	{
-		name:     "ResourceFormatNamespaceContainerObjects",
-		expected: true,
-		resource: "native:object/RootNamespace/BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R/*",
-	},
-	{
-		name:     "ResourceFormatNamespaceContainerObject",
-		expected: true,
-		resource: "native:object/RootNamespace/BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R/AeZa5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB4E",
-	},
-	{
-		name:     "ResourceFormatRootObjects",
-		expected: true,
-		resource: "native:object//*",
-	},
-	{
-		name:     "ResourceFormatRootContainerObjects",
-		expected: true,
-		resource: "native:object//BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R/*",
-	},
-	{
-		name:     "ResourceFormatRootContainerObject",
-		expected: true,
-		resource: "native:object//BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R/AeZa5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB4E",
-	},
-	{
-		name:     "ResourceFormatAllObjects",
-		expected: true,
-		resource: "native:object/*",
-	},
-	{
-		name:     "ResourceFormatNamespaceContainer",
-		expected: true,
-		resource: "native:container/RootNamespace/BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R",
-	},
-	{
-		name:     "ResourceFormatNamespaceContainers",
-		expected: true,
-		resource: "native:container/RootNamespace/*",
-	},
-	{
-		name:     "ResourceFormatRootContainers",
-		expected: true,
-		resource: "native:container//*",
-	},
-	{
-		name:     "ResourceFormatAllContainers",
-		expected: true,
-		resource: "native:container/*",
-	},
-	{
-		name:     "Invalid resource 1",
-		expected: false,
-		resource: "native:::container/*",
-	},
-	{
-		name:     "Invalid resource 2",
-		expected: false,
-		resource: "native:container/RootNamespace/w5HH3feoxFDD5tCTtoRzB3R/Bz726qzgLfxEE7wgtoRzB3R/RootNamespace",
-	},
-}
-
-func TestIsNativeResourceNameValid(t *testing.T) {
-	for _, test := range tests {
-		t.Run(test.name, func(t *testing.T) {
-			require.Equal(t, test.expected, IsNativeResourceNameValid(test.resource))
-		})
-	}
-}
-
-func BenchmarkIsNativeResourceNameValid(b *testing.B) {
-	for _, test := range tests {
-		b.Run(test.name, func(b *testing.B) {
-			for i := 0; i < b.N; i++ {
-				_ = IsNativeResourceNameValid(test.resource)
-			}
-		})
-	}
-}
--- a/schema/s3/consts.go
+++ b/schema/s3/consts.go
@ -6,12 +6,4 @@ const (
 	PropertyKeyDelimiter = "s3:delimiter"
 	PropertyKeyPrefix    = "s3:prefix"
 	PropertyKeyVersionID = "s3:VersionId"
-
-	ResourceFormatS3All           = "arn:aws:s3:::*"
-	ResourceFormatS3Bucket        = "arn:aws:s3:::%s"
-	ResourceFormatS3BucketObjects = "arn:aws:s3:::%s/*"
-	ResourceFormatS3BucketObject  = "arn:aws:s3:::%s/%s"
-
-	ResourceFormatIAMNamespaceUser  = "arn:aws:iam::%s:user/%s"
-	ResourceFormatIAMNamespaceGroup = "arn:aws:iam::%s:group/%s"
 )