diff --git a/pkg/innerring/processors/container/process_eacl.go b/pkg/innerring/processors/container/process_eacl.go
index 105553483..b5b2e5509 100644
--- a/pkg/innerring/processors/container/process_eacl.go
+++ b/pkg/innerring/processors/container/process_eacl.go
@@ -7,6 +7,7 @@ import (
 	"fmt"
 
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/event/container"
 	"go.uber.org/zap"
 )
@@ -43,9 +44,40 @@ func (cp *Processor) checkSetEACL(e container.SetEACL) error {
 		return errors.New("invalid signature")
 	}
 
-	// TODO: check key ownership
+	// verify the identity of the container owner
+	return cp.checkEACLOwnership(table, key)
+}
 
-	return nil
+func (cp *Processor) checkEACLOwnership(binTable []byte, key *keys.PublicKey) error {
+	// unmarshal table
+	table := eacl.NewTable()
+
+	err := table.Unmarshal(binTable)
+	if err != nil {
+		return fmt.Errorf("invalid binary table: %w", err)
+	}
+
+	// receive owner of the related container
+	cnr, err := cp.cnrClient.Get(table.CID())
+	if err != nil {
+		return fmt.Errorf("could not receive the container: %w", err)
+	}
+
+	ownerID := cnr.OwnerID()
+
+	// check key ownership
+	ownerKeys, err := cp.idClient.AccountKeys(ownerID)
+	if err != nil {
+		return fmt.Errorf("could not received owner keys %s: %w", ownerID, err)
+	}
+
+	for _, ownerKey := range ownerKeys {
+		if ownerKey.Equal(key) {
+			return nil
+		}
+	}
+
+	return fmt.Errorf("key %s is not tied to the owner of the container", key)
 }
 
 func (cp *Processor) approveSetEACL(e container.SetEACL) {
diff --git a/pkg/innerring/processors/container/processor.go b/pkg/innerring/processors/container/processor.go
index de664754e..aec59b6da 100644
--- a/pkg/innerring/processors/container/processor.go
+++ b/pkg/innerring/processors/container/processor.go
@@ -8,6 +8,7 @@ import (
 	"github.com/nspcc-dev/neofs-node/pkg/innerring/config"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/client"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/client/container/wrapper"
+	neofsid "github.com/nspcc-dev/neofs-node/pkg/morph/client/neofsid/wrapper"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/event"
 	containerEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/container"
 	"github.com/panjf2000/ants/v2"
@@ -29,6 +30,7 @@ type (
 		alphabetState     AlphabetState
 		feeProvider       *config.FeeConfig
 		cnrClient         *wrapper.Wrapper
+		idClient          *neofsid.ClientWrapper
 	}
 
 	// Params of the processor constructor.