diff --git a/container/test/generate.go b/container/test/generate.go
index b94347b..23ad3a1 100644
--- a/container/test/generate.go
+++ b/container/test/generate.go
@@ -1,6 +1,8 @@
 package containertest
 
 import (
+	"crypto/rand"
+
 	acltest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/acl/test"
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/container"
 	netmaptest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/netmap/test"
@@ -36,8 +38,11 @@ func GenerateContainer(empty bool) *container.Container {
 	m := new(container.Container)
 
 	if !empty {
+		nonce := make([]byte, 16)
+		_, _ = rand.Read(nonce)
+
 		m.SetBasicACL(12)
-		m.SetNonce([]byte{1, 2, 3})
+		m.SetNonce(nonce)
 		m.SetOwnerID(refstest.GenerateOwnerID(false))
 		m.SetAttributes(GenerateAttributes(false))
 		m.SetPlacementPolicy(netmaptest.GeneratePlacementPolicy(false))
diff --git a/object/test/generate.go b/object/test/generate.go
index 87ad64e..7b649f9 100644
--- a/object/test/generate.go
+++ b/object/test/generate.go
@@ -4,6 +4,8 @@ import (
 	"math/rand"
 	"time"
 
+	crand "crypto/rand"
+
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
 	refstest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs/test"
@@ -59,7 +61,10 @@ func generateSplitHeader(empty, withPar bool) *object.SplitHeader {
 	m := new(object.SplitHeader)
 
 	if !empty {
-		m.SetSplitID([]byte{1, 3, 5})
+		id := make([]byte, 16)
+		_, _ = crand.Read(id)
+
+		m.SetSplitID(id)
 		m.SetParent(refstest.GenerateObjectID(false))
 		m.SetPrevious(refstest.GenerateObjectID(false))
 		m.SetChildren(refstest.GenerateObjectIDs(false))
@@ -91,7 +96,10 @@ func GenerateECHeader(empty bool) *object.ECHeader {
 
 	if !empty {
 		ech.Parent = refstest.GenerateObjectID(empty)
-		ech.ParentSplitID = []byte{1, 2, 3}
+
+		ech.ParentSplitID = make([]byte, 16)
+		_, _ = crand.Read(ech.ParentSplitID)
+
 		ech.ParentSplitParentID = refstest.GenerateObjectID(empty)
 		ech.ParentAttributes = GenerateAttributes(empty)
 		ech.Index = 0
@@ -150,7 +158,10 @@ func GenerateSplitInfo(empty bool) *object.SplitInfo {
 	m := new(object.SplitInfo)
 
 	if !empty {
-		m.SetSplitID([]byte("splitID"))
+		id := make([]byte, 16)
+		_, _ = crand.Read(id)
+
+		m.SetSplitID(id)
 		m.SetLastPart(refstest.GenerateObjectID(false))
 		m.SetLink(refstest.GenerateObjectID(false))
 	}
@@ -627,7 +638,10 @@ func GenerateGetRangeHashResponseBody(empty bool) *object.GetRangeHashResponseBo
 
 	if !empty {
 		m.SetType(678)
-		m.SetHashList([][]byte{{1}, {2}})
+		m.SetHashList([][]byte{
+			refstest.GenerateChecksum(false).GetSum(),
+			refstest.GenerateChecksum(false).GetSum(),
+		})
 	}
 
 	return m
diff --git a/refs/test/generate.go b/refs/test/generate.go
index 6217a96..49619ef 100644
--- a/refs/test/generate.go
+++ b/refs/test/generate.go
@@ -1,7 +1,8 @@
 package refstest
 
 import (
-	"math/rand"
+	crand "crypto/rand"
+	"crypto/sha256"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
 )
@@ -21,7 +22,10 @@ func GenerateOwnerID(empty bool) *refs.OwnerID {
 	m := new(refs.OwnerID)
 
 	if !empty {
-		m.SetValue([]byte{1, 2, 3})
+		id := make([]byte, 25)
+		_, _ = crand.Read(id)
+
+		m.SetValue(id)
 	}
 
 	return m
@@ -42,7 +46,10 @@ func GenerateObjectID(empty bool) *refs.ObjectID {
 	m := new(refs.ObjectID)
 
 	if !empty {
-		m.SetValue([]byte{1, 2, 3})
+		id := make([]byte, sha256.Size)
+		_, _ = crand.Read(id)
+
+		m.SetValue(id)
 	}
 
 	return m
@@ -65,7 +72,10 @@ func GenerateContainerID(empty bool) *refs.ContainerID {
 	m := new(refs.ContainerID)
 
 	if !empty {
-		m.SetValue([]byte{1, 2, 3})
+		id := make([]byte, sha256.Size)
+		_, _ = crand.Read(id)
+
+		m.SetValue(id)
 	}
 
 	return m
@@ -88,9 +98,15 @@ func GenerateSignature(empty bool) *refs.Signature {
 	m := new(refs.Signature)
 
 	if !empty {
-		m.SetKey([]byte{1})
-		m.SetSign([]byte{2})
-		m.SetScheme(refs.SignatureScheme(rand.Int31() % 3))
+		key := make([]byte, 33)
+		_, _ = crand.Read(key)
+
+		sign := make([]byte, 65)
+		_, _ = crand.Read(sign)
+
+		m.SetScheme(refs.ECDSA_SHA512)
+		m.SetKey(key)
+		m.SetSign(sign)
 	}
 
 	return m
@@ -100,8 +116,11 @@ func GenerateChecksum(empty bool) *refs.Checksum {
 	m := new(refs.Checksum)
 
 	if !empty {
-		m.SetType(1)
-		m.SetSum([]byte{1, 2, 3})
+		cs := make([]byte, sha256.Size)
+		_, _ = crand.Read(cs)
+
+		m.SetType(refs.SHA256)
+		m.SetSum(cs)
 	}
 
 	return m
diff --git a/session/test/generate.go b/session/test/generate.go
index 561ec01..237eca5 100644
--- a/session/test/generate.go
+++ b/session/test/generate.go
@@ -4,6 +4,8 @@ import (
 	"math/rand"
 	"time"
 
+	crand "crypto/rand"
+
 	acltest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/acl/test"
 	refstest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs/test"
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session"
@@ -38,7 +40,10 @@ func GenerateCreateResponseBody(empty bool) *session.CreateResponseBody {
 	m := new(session.CreateResponseBody)
 
 	if !empty {
-		m.SetID([]byte{1, 2, 3})
+		id := make([]byte, 16)
+		_, _ = crand.Read(id)
+
+		m.SetID(id)
 		m.SetSessionKey([]byte{4, 5, 6})
 	}
 
@@ -164,7 +169,10 @@ func GenerateSessionTokenBody(empty bool) *session.TokenBody {
 	m := new(session.TokenBody)
 
 	if !empty {
-		m.SetID([]byte{1})
+		id := make([]byte, 16)
+		_, _ = crand.Read(id)
+
+		m.SetID(id)
 		m.SetSessionKey([]byte{2})
 		m.SetOwnerID(refstest.GenerateOwnerID(false))
 		m.SetLifetime(GenerateTokenLifetime(false))
diff --git a/tombstone/test/generate.go b/tombstone/test/generate.go
index 3caf528..1fab9eb 100644
--- a/tombstone/test/generate.go
+++ b/tombstone/test/generate.go
@@ -1,6 +1,8 @@
 package tombstonetest
 
 import (
+	"crypto/rand"
+
 	refstest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs/test"
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/tombstone"
 )
@@ -9,8 +11,11 @@ func GenerateTombstone(empty bool) *tombstone.Tombstone {
 	m := new(tombstone.Tombstone)
 
 	if !empty {
+		id := make([]byte, 16)
+		_, _ = rand.Read(id)
+
 		m.SetExpirationEpoch(89)
-		m.SetSplitID([]byte{3, 2, 1})
+		m.SetSplitID(id)
 		m.SetMembers(refstest.GenerateObjectIDs(false))
 	}