diff --git a/Makefile b/Makefile
index 50b46882..4c8f788f 100644
--- a/Makefile
+++ b/Makefile
@@ -7,11 +7,13 @@ proto:
 
 	@$(eval P_ACL_RECORDS_PATH_PB := commonspace/object/acl/aclrecordproto)
 	@$(eval P_TREE_CHANGES_PATH_PB := commonspace/object/tree/treechangeproto)
+	@$(eval P_CRYPTO_PATH_PB := util/keys/cryptoproto)
 	@$(eval P_ACL_RECORDS := M$(P_ACL_RECORDS_PATH_PB)/protos/aclrecord.proto=github.com/anytypeio/any-sync/$(P_ACL_RECORDS_PATH_PB))
 	@$(eval P_TREE_CHANGES := M$(P_TREE_CHANGES_PATH_PB)/protos/treechange.proto=github.com/anytypeio/any-sync/$(P_TREE_CHANGES_PATH_PB))
 
 	protoc --gogofaster_out=:. $(P_ACL_RECORDS_PATH_PB)/protos/*.proto
 	protoc --gogofaster_out=:. $(P_TREE_CHANGES_PATH_PB)/protos/*.proto
+	protoc --gogofaster_out=:. $(P_CRYPTO_PATH_PB)/protos/*.proto
 	$(eval PKGMAP := $$(P_TREE_CHANGES),$$(P_ACL_RECORDS))
 	protoc --gogofaster_out=$(PKGMAP):. --go-drpc_out=protolib=github.com/gogo/protobuf:. commonspace/spacesyncproto/protos/*.proto
 	protoc --gogofaster_out=$(PKGMAP):. --go-drpc_out=protolib=github.com/gogo/protobuf:. commonfile/fileproto/protos/*.proto
diff --git a/commonspace/object/acl/aclrecordproto/aclrecord.pb.go b/commonspace/object/acl/aclrecordproto/aclrecord.pb.go
index 3a25533b..c596996c 100644
--- a/commonspace/object/acl/aclrecordproto/aclrecord.pb.go
+++ b/commonspace/object/acl/aclrecordproto/aclrecord.pb.go
@@ -171,11 +171,11 @@ func (m *RawAclRecordWithId) GetId() string {
 }
 
 type AclRecord struct {
-	PrevId             string `protobuf:"bytes,1,opt,name=prevId,proto3" json:"prevId,omitempty"`
-	Identity           []byte `protobuf:"bytes,2,opt,name=identity,proto3" json:"identity,omitempty"`
-	Data               []byte `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
-	CurrentReadKeyHash uint64 `protobuf:"varint,4,opt,name=currentReadKeyHash,proto3" json:"currentReadKeyHash,omitempty"`
-	Timestamp          int64  `protobuf:"varint,5,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	PrevId    string `protobuf:"bytes,1,opt,name=prevId,proto3" json:"prevId,omitempty"`
+	Identity  []byte `protobuf:"bytes,2,opt,name=identity,proto3" json:"identity,omitempty"`
+	Data      []byte `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
+	ReadKeyId string `protobuf:"bytes,4,opt,name=readKeyId,proto3" json:"readKeyId,omitempty"`
+	Timestamp int64  `protobuf:"varint,5,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
 }
 
 func (m *AclRecord) Reset()         { *m = AclRecord{} }
@@ -232,11 +232,11 @@ func (m *AclRecord) GetData() []byte {
 	return nil
 }
 
-func (m *AclRecord) GetCurrentReadKeyHash() uint64 {
+func (m *AclRecord) GetReadKeyId() string {
 	if m != nil {
-		return m.CurrentReadKeyHash
+		return m.ReadKeyId
 	}
-	return 0
+	return ""
 }
 
 func (m *AclRecord) GetTimestamp() int64 {
@@ -248,12 +248,11 @@ func (m *AclRecord) GetTimestamp() int64 {
 
 type AclRoot struct {
 	Identity           []byte `protobuf:"bytes,1,opt,name=identity,proto3" json:"identity,omitempty"`
-	EncryptionKey      []byte `protobuf:"bytes,2,opt,name=encryptionKey,proto3" json:"encryptionKey,omitempty"`
-	SpaceId            string `protobuf:"bytes,3,opt,name=spaceId,proto3" json:"spaceId,omitempty"`
-	EncryptedReadKey   []byte `protobuf:"bytes,4,opt,name=encryptedReadKey,proto3" json:"encryptedReadKey,omitempty"`
-	DerivationScheme   string `protobuf:"bytes,5,opt,name=derivationScheme,proto3" json:"derivationScheme,omitempty"`
-	CurrentReadKeyHash uint64 `protobuf:"varint,6,opt,name=currentReadKeyHash,proto3" json:"currentReadKeyHash,omitempty"`
-	Timestamp          int64  `protobuf:"varint,7,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	SpaceId            string `protobuf:"bytes,2,opt,name=spaceId,proto3" json:"spaceId,omitempty"`
+	EncryptedReadKey   []byte `protobuf:"bytes,3,opt,name=encryptedReadKey,proto3" json:"encryptedReadKey,omitempty"`
+	DerivationScheme   string `protobuf:"bytes,4,opt,name=derivationScheme,proto3" json:"derivationScheme,omitempty"`
+	CurrentReadKeyHash uint64 `protobuf:"varint,5,opt,name=currentReadKeyHash,proto3" json:"currentReadKeyHash,omitempty"`
+	Timestamp          int64  `protobuf:"varint,6,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
 }
 
 func (m *AclRoot) Reset()         { *m = AclRoot{} }
@@ -296,13 +295,6 @@ func (m *AclRoot) GetIdentity() []byte {
 	return nil
 }
 
-func (m *AclRoot) GetEncryptionKey() []byte {
-	if m != nil {
-		return m.EncryptionKey
-	}
-	return nil
-}
-
 func (m *AclRoot) GetSpaceId() string {
 	if m != nil {
 		return m.SpaceId
@@ -508,9 +500,9 @@ func (m *AclData) GetAclContent() []*AclContentValue {
 }
 
 type AclState struct {
-	ReadKeyHashes []uint64                  `protobuf:"varint,1,rep,packed,name=readKeyHashes,proto3" json:"readKeyHashes,omitempty"`
-	UserStates    []*AclUserState           `protobuf:"bytes,2,rep,name=userStates,proto3" json:"userStates,omitempty"`
-	Invites       map[string]*AclUserInvite `protobuf:"bytes,3,rep,name=invites,proto3" json:"invites,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	ReadKeyIds []string                  `protobuf:"bytes,1,rep,name=readKeyIds,proto3" json:"readKeyIds,omitempty"`
+	UserStates []*AclUserState           `protobuf:"bytes,2,rep,name=userStates,proto3" json:"userStates,omitempty"`
+	Invites    map[string]*AclUserInvite `protobuf:"bytes,3,rep,name=invites,proto3" json:"invites,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
 func (m *AclState) Reset()         { *m = AclState{} }
@@ -546,9 +538,9 @@ func (m *AclState) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_AclState proto.InternalMessageInfo
 
-func (m *AclState) GetReadKeyHashes() []uint64 {
+func (m *AclState) GetReadKeyIds() []string {
 	if m != nil {
-		return m.ReadKeyHashes
+		return m.ReadKeyIds
 	}
 	return nil
 }
@@ -568,9 +560,8 @@ func (m *AclState) GetInvites() map[string]*AclUserInvite {
 }
 
 type AclUserState struct {
-	Identity      []byte             `protobuf:"bytes,1,opt,name=identity,proto3" json:"identity,omitempty"`
-	EncryptionKey []byte             `protobuf:"bytes,2,opt,name=encryptionKey,proto3" json:"encryptionKey,omitempty"`
-	Permissions   AclUserPermissions `protobuf:"varint,3,opt,name=permissions,proto3,enum=aclrecord.AclUserPermissions" json:"permissions,omitempty"`
+	Identity    []byte             `protobuf:"bytes,1,opt,name=identity,proto3" json:"identity,omitempty"`
+	Permissions AclUserPermissions `protobuf:"varint,2,opt,name=permissions,proto3,enum=aclrecord.AclUserPermissions" json:"permissions,omitempty"`
 }
 
 func (m *AclUserState) Reset()         { *m = AclUserState{} }
@@ -613,13 +604,6 @@ func (m *AclUserState) GetIdentity() []byte {
 	return nil
 }
 
-func (m *AclUserState) GetEncryptionKey() []byte {
-	if m != nil {
-		return m.EncryptionKey
-	}
-	return nil
-}
-
 func (m *AclUserState) GetPermissions() AclUserPermissions {
 	if m != nil {
 		return m.Permissions
@@ -629,9 +613,8 @@ func (m *AclUserState) GetPermissions() AclUserPermissions {
 
 type AclUserAdd struct {
 	Identity          []byte             `protobuf:"bytes,1,opt,name=identity,proto3" json:"identity,omitempty"`
-	EncryptionKey     []byte             `protobuf:"bytes,2,opt,name=encryptionKey,proto3" json:"encryptionKey,omitempty"`
-	EncryptedReadKeys [][]byte           `protobuf:"bytes,3,rep,name=encryptedReadKeys,proto3" json:"encryptedReadKeys,omitempty"`
-	Permissions       AclUserPermissions `protobuf:"varint,4,opt,name=permissions,proto3,enum=aclrecord.AclUserPermissions" json:"permissions,omitempty"`
+	EncryptedReadKeys [][]byte           `protobuf:"bytes,2,rep,name=encryptedReadKeys,proto3" json:"encryptedReadKeys,omitempty"`
+	Permissions       AclUserPermissions `protobuf:"varint,3,opt,name=permissions,proto3,enum=aclrecord.AclUserPermissions" json:"permissions,omitempty"`
 }
 
 func (m *AclUserAdd) Reset()         { *m = AclUserAdd{} }
@@ -674,13 +657,6 @@ func (m *AclUserAdd) GetIdentity() []byte {
 	return nil
 }
 
-func (m *AclUserAdd) GetEncryptionKey() []byte {
-	if m != nil {
-		return m.EncryptionKey
-	}
-	return nil
-}
-
 func (m *AclUserAdd) GetEncryptedReadKeys() [][]byte {
 	if m != nil {
 		return m.EncryptedReadKeys
@@ -697,9 +673,8 @@ func (m *AclUserAdd) GetPermissions() AclUserPermissions {
 
 type AclUserInvite struct {
 	AcceptPublicKey   []byte             `protobuf:"bytes,1,opt,name=acceptPublicKey,proto3" json:"acceptPublicKey,omitempty"`
-	EncryptSymKeyHash uint64             `protobuf:"varint,2,opt,name=encryptSymKeyHash,proto3" json:"encryptSymKeyHash,omitempty"`
-	EncryptedReadKeys [][]byte           `protobuf:"bytes,3,rep,name=encryptedReadKeys,proto3" json:"encryptedReadKeys,omitempty"`
-	Permissions       AclUserPermissions `protobuf:"varint,4,opt,name=permissions,proto3,enum=aclrecord.AclUserPermissions" json:"permissions,omitempty"`
+	EncryptedReadKeys [][]byte           `protobuf:"bytes,2,rep,name=encryptedReadKeys,proto3" json:"encryptedReadKeys,omitempty"`
+	Permissions       AclUserPermissions `protobuf:"varint,3,opt,name=permissions,proto3,enum=aclrecord.AclUserPermissions" json:"permissions,omitempty"`
 }
 
 func (m *AclUserInvite) Reset()         { *m = AclUserInvite{} }
@@ -742,13 +717,6 @@ func (m *AclUserInvite) GetAcceptPublicKey() []byte {
 	return nil
 }
 
-func (m *AclUserInvite) GetEncryptSymKeyHash() uint64 {
-	if m != nil {
-		return m.EncryptSymKeyHash
-	}
-	return 0
-}
-
 func (m *AclUserInvite) GetEncryptedReadKeys() [][]byte {
 	if m != nil {
 		return m.EncryptedReadKeys
@@ -765,10 +733,9 @@ func (m *AclUserInvite) GetPermissions() AclUserPermissions {
 
 type AclUserJoin struct {
 	Identity          []byte   `protobuf:"bytes,1,opt,name=identity,proto3" json:"identity,omitempty"`
-	EncryptionKey     []byte   `protobuf:"bytes,2,opt,name=encryptionKey,proto3" json:"encryptionKey,omitempty"`
-	AcceptSignature   []byte   `protobuf:"bytes,3,opt,name=acceptSignature,proto3" json:"acceptSignature,omitempty"`
-	AcceptPubKey      []byte   `protobuf:"bytes,4,opt,name=acceptPubKey,proto3" json:"acceptPubKey,omitempty"`
-	EncryptedReadKeys [][]byte `protobuf:"bytes,5,rep,name=encryptedReadKeys,proto3" json:"encryptedReadKeys,omitempty"`
+	AcceptSignature   []byte   `protobuf:"bytes,2,opt,name=acceptSignature,proto3" json:"acceptSignature,omitempty"`
+	AcceptPubKey      []byte   `protobuf:"bytes,3,opt,name=acceptPubKey,proto3" json:"acceptPubKey,omitempty"`
+	EncryptedReadKeys [][]byte `protobuf:"bytes,4,rep,name=encryptedReadKeys,proto3" json:"encryptedReadKeys,omitempty"`
 }
 
 func (m *AclUserJoin) Reset()         { *m = AclUserJoin{} }
@@ -811,13 +778,6 @@ func (m *AclUserJoin) GetIdentity() []byte {
 	return nil
 }
 
-func (m *AclUserJoin) GetEncryptionKey() []byte {
-	if m != nil {
-		return m.EncryptionKey
-	}
-	return nil
-}
-
 func (m *AclUserJoin) GetAcceptSignature() []byte {
 	if m != nil {
 		return m.AcceptSignature
@@ -893,8 +853,7 @@ func (m *AclUserRemove) GetReadKeyReplaces() []*AclReadKeyReplace {
 
 type AclReadKeyReplace struct {
 	Identity         []byte `protobuf:"bytes,1,opt,name=identity,proto3" json:"identity,omitempty"`
-	EncryptionKey    []byte `protobuf:"bytes,2,opt,name=encryptionKey,proto3" json:"encryptionKey,omitempty"`
-	EncryptedReadKey []byte `protobuf:"bytes,3,opt,name=encryptedReadKey,proto3" json:"encryptedReadKey,omitempty"`
+	EncryptedReadKey []byte `protobuf:"bytes,2,opt,name=encryptedReadKey,proto3" json:"encryptedReadKey,omitempty"`
 }
 
 func (m *AclReadKeyReplace) Reset()         { *m = AclReadKeyReplace{} }
@@ -937,13 +896,6 @@ func (m *AclReadKeyReplace) GetIdentity() []byte {
 	return nil
 }
 
-func (m *AclReadKeyReplace) GetEncryptionKey() []byte {
-	if m != nil {
-		return m.EncryptionKey
-	}
-	return nil
-}
-
 func (m *AclReadKeyReplace) GetEncryptedReadKey() []byte {
 	if m != nil {
 		return m.EncryptedReadKey
@@ -1004,7 +956,7 @@ func (m *AclUserPermissionChange) GetPermissions() AclUserPermissions {
 }
 
 type AclSyncMessage struct {
-	Content *AclSyncContentValue `protobuf:"bytes,2,opt,name=content,proto3" json:"content,omitempty"`
+	Content *AclSyncContentValue `protobuf:"bytes,1,opt,name=content,proto3" json:"content,omitempty"`
 }
 
 func (m *AclSyncMessage) Reset()         { *m = AclSyncMessage{} }
@@ -1192,68 +1144,65 @@ func init() {
 }
 
 var fileDescriptor_c8e9f754f34e929b = []byte{
-	// 962 bytes of a gzipped FileDescriptorProto
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 }
 
 func (m *RawAclRecord) Marshal() (dAtA []byte, err error) {
@@ -1369,10 +1318,12 @@ func (m *AclRecord) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x28
 	}
-	if m.CurrentReadKeyHash != 0 {
-		i = encodeVarintAclrecord(dAtA, i, uint64(m.CurrentReadKeyHash))
+	if len(m.ReadKeyId) > 0 {
+		i -= len(m.ReadKeyId)
+		copy(dAtA[i:], m.ReadKeyId)
+		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.ReadKeyId)))
 		i--
-		dAtA[i] = 0x20
+		dAtA[i] = 0x22
 	}
 	if len(m.Data) > 0 {
 		i -= len(m.Data)
@@ -1421,39 +1372,32 @@ func (m *AclRoot) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	if m.Timestamp != 0 {
 		i = encodeVarintAclrecord(dAtA, i, uint64(m.Timestamp))
 		i--
-		dAtA[i] = 0x38
+		dAtA[i] = 0x30
 	}
 	if m.CurrentReadKeyHash != 0 {
 		i = encodeVarintAclrecord(dAtA, i, uint64(m.CurrentReadKeyHash))
 		i--
-		dAtA[i] = 0x30
+		dAtA[i] = 0x28
 	}
 	if len(m.DerivationScheme) > 0 {
 		i -= len(m.DerivationScheme)
 		copy(dAtA[i:], m.DerivationScheme)
 		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.DerivationScheme)))
 		i--
-		dAtA[i] = 0x2a
+		dAtA[i] = 0x22
 	}
 	if len(m.EncryptedReadKey) > 0 {
 		i -= len(m.EncryptedReadKey)
 		copy(dAtA[i:], m.EncryptedReadKey)
 		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptedReadKey)))
 		i--
-		dAtA[i] = 0x22
+		dAtA[i] = 0x1a
 	}
 	if len(m.SpaceId) > 0 {
 		i -= len(m.SpaceId)
 		copy(dAtA[i:], m.SpaceId)
 		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.SpaceId)))
 		i--
-		dAtA[i] = 0x1a
-	}
-	if len(m.EncryptionKey) > 0 {
-		i -= len(m.EncryptionKey)
-		copy(dAtA[i:], m.EncryptionKey)
-		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptionKey)))
-		i--
 		dAtA[i] = 0x12
 	}
 	if len(m.Identity) > 0 {
@@ -1700,23 +1644,14 @@ func (m *AclState) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			dAtA[i] = 0x12
 		}
 	}
-	if len(m.ReadKeyHashes) > 0 {
-		dAtA8 := make([]byte, len(m.ReadKeyHashes)*10)
-		var j7 int
-		for _, num := range m.ReadKeyHashes {
-			for num >= 1<<7 {
-				dAtA8[j7] = uint8(uint64(num)&0x7f | 0x80)
-				num >>= 7
-				j7++
-			}
-			dAtA8[j7] = uint8(num)
-			j7++
+	if len(m.ReadKeyIds) > 0 {
+		for iNdEx := len(m.ReadKeyIds) - 1; iNdEx >= 0; iNdEx-- {
+			i -= len(m.ReadKeyIds[iNdEx])
+			copy(dAtA[i:], m.ReadKeyIds[iNdEx])
+			i = encodeVarintAclrecord(dAtA, i, uint64(len(m.ReadKeyIds[iNdEx])))
+			i--
+			dAtA[i] = 0xa
 		}
-		i -= j7
-		copy(dAtA[i:], dAtA8[:j7])
-		i = encodeVarintAclrecord(dAtA, i, uint64(j7))
-		i--
-		dAtA[i] = 0xa
 	}
 	return len(dAtA) - i, nil
 }
@@ -1744,14 +1679,7 @@ func (m *AclUserState) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	if m.Permissions != 0 {
 		i = encodeVarintAclrecord(dAtA, i, uint64(m.Permissions))
 		i--
-		dAtA[i] = 0x18
-	}
-	if len(m.EncryptionKey) > 0 {
-		i -= len(m.EncryptionKey)
-		copy(dAtA[i:], m.EncryptionKey)
-		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptionKey)))
-		i--
-		dAtA[i] = 0x12
+		dAtA[i] = 0x10
 	}
 	if len(m.Identity) > 0 {
 		i -= len(m.Identity)
@@ -1786,7 +1714,7 @@ func (m *AclUserAdd) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	if m.Permissions != 0 {
 		i = encodeVarintAclrecord(dAtA, i, uint64(m.Permissions))
 		i--
-		dAtA[i] = 0x20
+		dAtA[i] = 0x18
 	}
 	if len(m.EncryptedReadKeys) > 0 {
 		for iNdEx := len(m.EncryptedReadKeys) - 1; iNdEx >= 0; iNdEx-- {
@@ -1794,16 +1722,9 @@ func (m *AclUserAdd) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			copy(dAtA[i:], m.EncryptedReadKeys[iNdEx])
 			i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptedReadKeys[iNdEx])))
 			i--
-			dAtA[i] = 0x1a
+			dAtA[i] = 0x12
 		}
 	}
-	if len(m.EncryptionKey) > 0 {
-		i -= len(m.EncryptionKey)
-		copy(dAtA[i:], m.EncryptionKey)
-		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptionKey)))
-		i--
-		dAtA[i] = 0x12
-	}
 	if len(m.Identity) > 0 {
 		i -= len(m.Identity)
 		copy(dAtA[i:], m.Identity)
@@ -1837,7 +1758,7 @@ func (m *AclUserInvite) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	if m.Permissions != 0 {
 		i = encodeVarintAclrecord(dAtA, i, uint64(m.Permissions))
 		i--
-		dAtA[i] = 0x20
+		dAtA[i] = 0x18
 	}
 	if len(m.EncryptedReadKeys) > 0 {
 		for iNdEx := len(m.EncryptedReadKeys) - 1; iNdEx >= 0; iNdEx-- {
@@ -1845,14 +1766,9 @@ func (m *AclUserInvite) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			copy(dAtA[i:], m.EncryptedReadKeys[iNdEx])
 			i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptedReadKeys[iNdEx])))
 			i--
-			dAtA[i] = 0x1a
+			dAtA[i] = 0x12
 		}
 	}
-	if m.EncryptSymKeyHash != 0 {
-		i = encodeVarintAclrecord(dAtA, i, uint64(m.EncryptSymKeyHash))
-		i--
-		dAtA[i] = 0x10
-	}
 	if len(m.AcceptPublicKey) > 0 {
 		i -= len(m.AcceptPublicKey)
 		copy(dAtA[i:], m.AcceptPublicKey)
@@ -1889,7 +1805,7 @@ func (m *AclUserJoin) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			copy(dAtA[i:], m.EncryptedReadKeys[iNdEx])
 			i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptedReadKeys[iNdEx])))
 			i--
-			dAtA[i] = 0x2a
+			dAtA[i] = 0x22
 		}
 	}
 	if len(m.AcceptPubKey) > 0 {
@@ -1897,20 +1813,13 @@ func (m *AclUserJoin) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		copy(dAtA[i:], m.AcceptPubKey)
 		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.AcceptPubKey)))
 		i--
-		dAtA[i] = 0x22
+		dAtA[i] = 0x1a
 	}
 	if len(m.AcceptSignature) > 0 {
 		i -= len(m.AcceptSignature)
 		copy(dAtA[i:], m.AcceptSignature)
 		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.AcceptSignature)))
 		i--
-		dAtA[i] = 0x1a
-	}
-	if len(m.EncryptionKey) > 0 {
-		i -= len(m.EncryptionKey)
-		copy(dAtA[i:], m.EncryptionKey)
-		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptionKey)))
-		i--
 		dAtA[i] = 0x12
 	}
 	if len(m.Identity) > 0 {
@@ -1992,13 +1901,6 @@ func (m *AclReadKeyReplace) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		copy(dAtA[i:], m.EncryptedReadKey)
 		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptedReadKey)))
 		i--
-		dAtA[i] = 0x1a
-	}
-	if len(m.EncryptionKey) > 0 {
-		i -= len(m.EncryptionKey)
-		copy(dAtA[i:], m.EncryptionKey)
-		i = encodeVarintAclrecord(dAtA, i, uint64(len(m.EncryptionKey)))
-		i--
 		dAtA[i] = 0x12
 	}
 	if len(m.Identity) > 0 {
@@ -2076,7 +1978,7 @@ func (m *AclSyncMessage) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			i = encodeVarintAclrecord(dAtA, i, uint64(size))
 		}
 		i--
-		dAtA[i] = 0x12
+		dAtA[i] = 0xa
 	}
 	return len(dAtA) - i, nil
 }
@@ -2242,8 +2144,9 @@ func (m *AclRecord) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
 	}
-	if m.CurrentReadKeyHash != 0 {
-		n += 1 + sovAclrecord(uint64(m.CurrentReadKeyHash))
+	l = len(m.ReadKeyId)
+	if l > 0 {
+		n += 1 + l + sovAclrecord(uint64(l))
 	}
 	if m.Timestamp != 0 {
 		n += 1 + sovAclrecord(uint64(m.Timestamp))
@@ -2261,10 +2164,6 @@ func (m *AclRoot) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
 	}
-	l = len(m.EncryptionKey)
-	if l > 0 {
-		n += 1 + l + sovAclrecord(uint64(l))
-	}
 	l = len(m.SpaceId)
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
@@ -2379,12 +2278,11 @@ func (m *AclState) Size() (n int) {
 	}
 	var l int
 	_ = l
-	if len(m.ReadKeyHashes) > 0 {
-		l = 0
-		for _, e := range m.ReadKeyHashes {
-			l += sovAclrecord(uint64(e))
+	if len(m.ReadKeyIds) > 0 {
+		for _, s := range m.ReadKeyIds {
+			l = len(s)
+			n += 1 + l + sovAclrecord(uint64(l))
 		}
-		n += 1 + sovAclrecord(uint64(l)) + l
 	}
 	if len(m.UserStates) > 0 {
 		for _, e := range m.UserStates {
@@ -2418,10 +2316,6 @@ func (m *AclUserState) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
 	}
-	l = len(m.EncryptionKey)
-	if l > 0 {
-		n += 1 + l + sovAclrecord(uint64(l))
-	}
 	if m.Permissions != 0 {
 		n += 1 + sovAclrecord(uint64(m.Permissions))
 	}
@@ -2438,10 +2332,6 @@ func (m *AclUserAdd) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
 	}
-	l = len(m.EncryptionKey)
-	if l > 0 {
-		n += 1 + l + sovAclrecord(uint64(l))
-	}
 	if len(m.EncryptedReadKeys) > 0 {
 		for _, b := range m.EncryptedReadKeys {
 			l = len(b)
@@ -2464,9 +2354,6 @@ func (m *AclUserInvite) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
 	}
-	if m.EncryptSymKeyHash != 0 {
-		n += 1 + sovAclrecord(uint64(m.EncryptSymKeyHash))
-	}
 	if len(m.EncryptedReadKeys) > 0 {
 		for _, b := range m.EncryptedReadKeys {
 			l = len(b)
@@ -2489,10 +2376,6 @@ func (m *AclUserJoin) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
 	}
-	l = len(m.EncryptionKey)
-	if l > 0 {
-		n += 1 + l + sovAclrecord(uint64(l))
-	}
 	l = len(m.AcceptSignature)
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
@@ -2539,10 +2422,6 @@ func (m *AclReadKeyReplace) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
 	}
-	l = len(m.EncryptionKey)
-	if l > 0 {
-		n += 1 + l + sovAclrecord(uint64(l))
-	}
 	l = len(m.EncryptedReadKey)
 	if l > 0 {
 		n += 1 + l + sovAclrecord(uint64(l))
@@ -3056,10 +2935,10 @@ func (m *AclRecord) Unmarshal(dAtA []byte) error {
 			}
 			iNdEx = postIndex
 		case 4:
-			if wireType != 0 {
-				return fmt.Errorf("proto: wrong wireType = %d for field CurrentReadKeyHash", wireType)
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ReadKeyId", wireType)
 			}
-			m.CurrentReadKeyHash = 0
+			var stringLen uint64
 			for shift := uint(0); ; shift += 7 {
 				if shift >= 64 {
 					return ErrIntOverflowAclrecord
@@ -3069,11 +2948,24 @@ func (m *AclRecord) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.CurrentReadKeyHash |= uint64(b&0x7F) << shift
+				stringLen |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
 			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthAclrecord
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthAclrecord
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.ReadKeyId = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		case 5:
 			if wireType != 0 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Timestamp", wireType)
@@ -3178,40 +3070,6 @@ func (m *AclRoot) Unmarshal(dAtA []byte) error {
 			}
 			iNdEx = postIndex
 		case 2:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field EncryptionKey", wireType)
-			}
-			var byteLen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAclrecord
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				byteLen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if byteLen < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			postIndex := iNdEx + byteLen
-			if postIndex < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			m.EncryptionKey = append(m.EncryptionKey[:0], dAtA[iNdEx:postIndex]...)
-			if m.EncryptionKey == nil {
-				m.EncryptionKey = []byte{}
-			}
-			iNdEx = postIndex
-		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field SpaceId", wireType)
 			}
@@ -3243,7 +3101,7 @@ func (m *AclRoot) Unmarshal(dAtA []byte) error {
 			}
 			m.SpaceId = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
-		case 4:
+		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field EncryptedReadKey", wireType)
 			}
@@ -3277,7 +3135,7 @@ func (m *AclRoot) Unmarshal(dAtA []byte) error {
 				m.EncryptedReadKey = []byte{}
 			}
 			iNdEx = postIndex
-		case 5:
+		case 4:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field DerivationScheme", wireType)
 			}
@@ -3309,7 +3167,7 @@ func (m *AclRoot) Unmarshal(dAtA []byte) error {
 			}
 			m.DerivationScheme = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
-		case 6:
+		case 5:
 			if wireType != 0 {
 				return fmt.Errorf("proto: wrong wireType = %d for field CurrentReadKeyHash", wireType)
 			}
@@ -3328,7 +3186,7 @@ func (m *AclRoot) Unmarshal(dAtA []byte) error {
 					break
 				}
 			}
-		case 7:
+		case 6:
 			if wireType != 0 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Timestamp", wireType)
 			}
@@ -3707,81 +3565,37 @@ func (m *AclState) Unmarshal(dAtA []byte) error {
 		}
 		switch fieldNum {
 		case 1:
-			if wireType == 0 {
-				var v uint64
-				for shift := uint(0); ; shift += 7 {
-					if shift >= 64 {
-						return ErrIntOverflowAclrecord
-					}
-					if iNdEx >= l {
-						return io.ErrUnexpectedEOF
-					}
-					b := dAtA[iNdEx]
-					iNdEx++
-					v |= uint64(b&0x7F) << shift
-					if b < 0x80 {
-						break
-					}
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ReadKeyIds", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowAclrecord
 				}
-				m.ReadKeyHashes = append(m.ReadKeyHashes, v)
-			} else if wireType == 2 {
-				var packedLen int
-				for shift := uint(0); ; shift += 7 {
-					if shift >= 64 {
-						return ErrIntOverflowAclrecord
-					}
-					if iNdEx >= l {
-						return io.ErrUnexpectedEOF
-					}
-					b := dAtA[iNdEx]
-					iNdEx++
-					packedLen |= int(b&0x7F) << shift
-					if b < 0x80 {
-						break
-					}
-				}
-				if packedLen < 0 {
-					return ErrInvalidLengthAclrecord
-				}
-				postIndex := iNdEx + packedLen
-				if postIndex < 0 {
-					return ErrInvalidLengthAclrecord
-				}
-				if postIndex > l {
+				if iNdEx >= l {
 					return io.ErrUnexpectedEOF
 				}
-				var elementCount int
-				var count int
-				for _, integer := range dAtA[iNdEx:postIndex] {
-					if integer < 128 {
-						count++
-					}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
 				}
-				elementCount = count
-				if elementCount != 0 && len(m.ReadKeyHashes) == 0 {
-					m.ReadKeyHashes = make([]uint64, 0, elementCount)
-				}
-				for iNdEx < postIndex {
-					var v uint64
-					for shift := uint(0); ; shift += 7 {
-						if shift >= 64 {
-							return ErrIntOverflowAclrecord
-						}
-						if iNdEx >= l {
-							return io.ErrUnexpectedEOF
-						}
-						b := dAtA[iNdEx]
-						iNdEx++
-						v |= uint64(b&0x7F) << shift
-						if b < 0x80 {
-							break
-						}
-					}
-					m.ReadKeyHashes = append(m.ReadKeyHashes, v)
-				}
-			} else {
-				return fmt.Errorf("proto: wrong wireType = %d for field ReadKeyHashes", wireType)
 			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthAclrecord
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthAclrecord
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.ReadKeyIds = append(m.ReadKeyIds, string(dAtA[iNdEx:postIndex]))
+			iNdEx = postIndex
 		case 2:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field UserStates", wireType)
@@ -4030,40 +3844,6 @@ func (m *AclUserState) Unmarshal(dAtA []byte) error {
 			}
 			iNdEx = postIndex
 		case 2:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field EncryptionKey", wireType)
-			}
-			var byteLen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAclrecord
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				byteLen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if byteLen < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			postIndex := iNdEx + byteLen
-			if postIndex < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			m.EncryptionKey = append(m.EncryptionKey[:0], dAtA[iNdEx:postIndex]...)
-			if m.EncryptionKey == nil {
-				m.EncryptionKey = []byte{}
-			}
-			iNdEx = postIndex
-		case 3:
 			if wireType != 0 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Permissions", wireType)
 			}
@@ -4167,40 +3947,6 @@ func (m *AclUserAdd) Unmarshal(dAtA []byte) error {
 			}
 			iNdEx = postIndex
 		case 2:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field EncryptionKey", wireType)
-			}
-			var byteLen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAclrecord
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				byteLen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if byteLen < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			postIndex := iNdEx + byteLen
-			if postIndex < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			m.EncryptionKey = append(m.EncryptionKey[:0], dAtA[iNdEx:postIndex]...)
-			if m.EncryptionKey == nil {
-				m.EncryptionKey = []byte{}
-			}
-			iNdEx = postIndex
-		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field EncryptedReadKeys", wireType)
 			}
@@ -4232,7 +3978,7 @@ func (m *AclUserAdd) Unmarshal(dAtA []byte) error {
 			m.EncryptedReadKeys = append(m.EncryptedReadKeys, make([]byte, postIndex-iNdEx))
 			copy(m.EncryptedReadKeys[len(m.EncryptedReadKeys)-1], dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
-		case 4:
+		case 3:
 			if wireType != 0 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Permissions", wireType)
 			}
@@ -4336,25 +4082,6 @@ func (m *AclUserInvite) Unmarshal(dAtA []byte) error {
 			}
 			iNdEx = postIndex
 		case 2:
-			if wireType != 0 {
-				return fmt.Errorf("proto: wrong wireType = %d for field EncryptSymKeyHash", wireType)
-			}
-			m.EncryptSymKeyHash = 0
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAclrecord
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				m.EncryptSymKeyHash |= uint64(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field EncryptedReadKeys", wireType)
 			}
@@ -4386,7 +4113,7 @@ func (m *AclUserInvite) Unmarshal(dAtA []byte) error {
 			m.EncryptedReadKeys = append(m.EncryptedReadKeys, make([]byte, postIndex-iNdEx))
 			copy(m.EncryptedReadKeys[len(m.EncryptedReadKeys)-1], dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
-		case 4:
+		case 3:
 			if wireType != 0 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Permissions", wireType)
 			}
@@ -4490,40 +4217,6 @@ func (m *AclUserJoin) Unmarshal(dAtA []byte) error {
 			}
 			iNdEx = postIndex
 		case 2:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field EncryptionKey", wireType)
-			}
-			var byteLen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAclrecord
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				byteLen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if byteLen < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			postIndex := iNdEx + byteLen
-			if postIndex < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			m.EncryptionKey = append(m.EncryptionKey[:0], dAtA[iNdEx:postIndex]...)
-			if m.EncryptionKey == nil {
-				m.EncryptionKey = []byte{}
-			}
-			iNdEx = postIndex
-		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field AcceptSignature", wireType)
 			}
@@ -4557,7 +4250,7 @@ func (m *AclUserJoin) Unmarshal(dAtA []byte) error {
 				m.AcceptSignature = []byte{}
 			}
 			iNdEx = postIndex
-		case 4:
+		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field AcceptPubKey", wireType)
 			}
@@ -4591,7 +4284,7 @@ func (m *AclUserJoin) Unmarshal(dAtA []byte) error {
 				m.AcceptPubKey = []byte{}
 			}
 			iNdEx = postIndex
-		case 5:
+		case 4:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field EncryptedReadKeys", wireType)
 			}
@@ -4826,40 +4519,6 @@ func (m *AclReadKeyReplace) Unmarshal(dAtA []byte) error {
 			}
 			iNdEx = postIndex
 		case 2:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field EncryptionKey", wireType)
-			}
-			var byteLen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAclrecord
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				byteLen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if byteLen < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			postIndex := iNdEx + byteLen
-			if postIndex < 0 {
-				return ErrInvalidLengthAclrecord
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			m.EncryptionKey = append(m.EncryptionKey[:0], dAtA[iNdEx:postIndex]...)
-			if m.EncryptionKey == nil {
-				m.EncryptionKey = []byte{}
-			}
-			iNdEx = postIndex
-		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field EncryptedReadKey", wireType)
 			}
@@ -5046,7 +4705,7 @@ func (m *AclSyncMessage) Unmarshal(dAtA []byte) error {
 			return fmt.Errorf("proto: AclSyncMessage: illegal tag %d (wire type %d)", fieldNum, wire)
 		}
 		switch fieldNum {
-		case 2:
+		case 1:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Content", wireType)
 			}
diff --git a/commonspace/object/acl/aclrecordproto/protos/aclrecord.proto b/commonspace/object/acl/aclrecordproto/protos/aclrecord.proto
index 56cc2c28..aa81c3ec 100644
--- a/commonspace/object/acl/aclrecordproto/protos/aclrecord.proto
+++ b/commonspace/object/acl/aclrecordproto/protos/aclrecord.proto
@@ -74,10 +74,9 @@ message AclUserInvite {
 
 message AclUserJoin {
     bytes identity = 1;
-    bytes encryptionKey = 2;
-    bytes acceptSignature = 3;
-    bytes acceptPubKey = 4;
-    repeated bytes encryptedReadKeys = 5;
+    bytes acceptSignature = 2;
+    bytes acceptPubKey = 3;
+    repeated bytes encryptedReadKeys = 4;
 }
 
 message AclUserRemove {
diff --git a/commonspace/object/acl/list/aclrecordbuilder.go b/commonspace/object/acl/list/aclrecordbuilder.go
index 8f0a0071..6b3f72e2 100644
--- a/commonspace/object/acl/list/aclrecordbuilder.go
+++ b/commonspace/object/acl/list/aclrecordbuilder.go
@@ -4,7 +4,7 @@ import (
 	"github.com/anytypeio/any-sync/commonspace/object/acl/aclrecordproto"
 	"github.com/anytypeio/any-sync/commonspace/object/keychain"
 	"github.com/anytypeio/any-sync/util/cidutil"
-	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/anytypeio/any-sync/util/keys/symmetric"
 	"github.com/gogo/protobuf/proto"
 	"time"
@@ -29,7 +29,7 @@ func newAclRecordBuilder(id string, keychain *keychain.Keychain) AclRecordBuilde
 }
 
 func (a *aclRecordBuilder) BuildUserJoin(acceptPrivKeyBytes []byte, encSymKeyBytes []byte, state *AclState) (rec *aclrecordproto.RawAclRecord, err error) {
-	acceptPrivKey, err := signingkey.NewSigningEd25519PrivKeyFromBytes(acceptPrivKeyBytes)
+	acceptPrivKey, err := crypto.NewSigningEd25519PrivKeyFromBytes(acceptPrivKeyBytes)
 	if err != nil {
 		return
 	}
diff --git a/commonspace/object/acl/list/aclstate.go b/commonspace/object/acl/list/aclstate.go
index fb6d4b49..4101aae2 100644
--- a/commonspace/object/acl/list/aclstate.go
+++ b/commonspace/object/acl/list/aclstate.go
@@ -9,6 +9,7 @@ import (
 	"github.com/anytypeio/any-sync/app/logger"
 	"github.com/anytypeio/any-sync/commonspace/object/acl/aclrecordproto"
 	"github.com/anytypeio/any-sync/commonspace/object/keychain"
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/anytypeio/any-sync/util/keys"
 	"github.com/anytypeio/any-sync/util/keys/asymmetric/encryptionkey"
 	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
@@ -311,7 +312,7 @@ func (st *AclState) applyUserJoin(ch *aclrecordproto.AclUserJoin) error {
 
 	// validating signature
 	signature := ch.GetAcceptSignature()
-	verificationKey, err := signingkey.NewSigningEd25519PubKeyFromBytes(invite.AcceptPublicKey)
+	verificationKey, err := crypto.NewSigningEd25519PubKeyFromBytes(invite.AcceptPublicKey)
 	if err != nil {
 		return fmt.Errorf("public key verifying invite accepts is given in incorrect format: %v", err)
 	}
diff --git a/commonspace/object/acl/testutils/acllistbuilder/keychain.go b/commonspace/object/acl/testutils/acllistbuilder/keychain.go
index df93f75b..4e727cfa 100644
--- a/commonspace/object/acl/testutils/acllistbuilder/keychain.go
+++ b/commonspace/object/acl/testutils/acllistbuilder/keychain.go
@@ -2,6 +2,7 @@ package acllistbuilder
 
 import (
 	"github.com/anytypeio/any-sync/commonspace/object/acl/aclrecordproto"
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/anytypeio/any-sync/util/keys"
 	"github.com/anytypeio/any-sync/util/keys/asymmetric/encryptionkey"
 	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
@@ -81,12 +82,12 @@ func (k *YAMLKeychain) AddSigningKey(key *Key) {
 		err        error
 	)
 	if key.Value == "generated" {
-		newPrivKey, pubKey, err = signingkey.GenerateRandomEd25519KeyPair()
+		newPrivKey, pubKey, err = crypto.GenerateRandomEd25519KeyPair()
 		if err != nil {
 			panic(err)
 		}
 	} else {
-		newPrivKey, err = keys.DecodeKeyFromString(key.Value, signingkey.NewSigningEd25519PrivKeyFromBytes, nil)
+		newPrivKey, err = keys.DecodeKeyFromString(key.Value, crypto.NewSigningEd25519PrivKeyFromBytes, nil)
 		if err != nil {
 			panic(err)
 		}
diff --git a/commonspace/object/keychain/keychain.go b/commonspace/object/keychain/keychain.go
index 0cf7ad7b..1cedbf31 100644
--- a/commonspace/object/keychain/keychain.go
+++ b/commonspace/object/keychain/keychain.go
@@ -1,6 +1,7 @@
 package keychain
 
 import (
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
 )
 
@@ -18,7 +19,7 @@ func (k *Keychain) GetOrAdd(identity string) (signingkey.PubKey, error) {
 	if key, exists := k.keys[identity]; exists {
 		return key, nil
 	}
-	res, err := signingkey.NewSigningEd25519PubKeyFromBytes([]byte(identity))
+	res, err := crypto.NewSigningEd25519PubKeyFromBytes([]byte(identity))
 	if err != nil {
 		return nil, err
 	}
diff --git a/commonspace/settings/settings_test.go b/commonspace/settings/settings_test.go
index ce14ff3f..771050d9 100644
--- a/commonspace/settings/settings_test.go
+++ b/commonspace/settings/settings_test.go
@@ -14,7 +14,7 @@ import (
 	"github.com/anytypeio/any-sync/commonspace/settings/settingsstate"
 	"github.com/anytypeio/any-sync/commonspace/settings/settingsstate/mock_settingsstate"
 	"github.com/anytypeio/any-sync/commonspace/spacestorage/mock_spacestorage"
-	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/golang/mock/gomock"
 	"github.com/stretchr/testify/require"
 	"sync"
@@ -149,7 +149,7 @@ func TestSettingsObject_DeleteObject(t *testing.T) {
 	accountData := &accountdata.AccountData{
 		Identity: []byte("id"),
 		PeerKey:  nil,
-		SignKey:  &signingkey.Ed25519PrivateKey{},
+		SignKey:  &crypto.Ed25519PrivKey{},
 		EncKey:   nil,
 	}
 	fx.account.EXPECT().Account().Return(accountData)
diff --git a/commonspace/spacestorage/spacestorage.go b/commonspace/spacestorage/spacestorage.go
index ff24d316..a2bf66a0 100644
--- a/commonspace/spacestorage/spacestorage.go
+++ b/commonspace/spacestorage/spacestorage.go
@@ -13,7 +13,7 @@ import (
 	"github.com/anytypeio/any-sync/commonspace/object/tree/treestorage"
 	"github.com/anytypeio/any-sync/commonspace/spacesyncproto"
 	"github.com/anytypeio/any-sync/util/cidutil"
-	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/gogo/protobuf/proto"
 	"strings"
 )
@@ -94,7 +94,7 @@ func ValidateSpaceHeader(spaceId string, header, identity []byte) (err error) {
 		err = ErrIncorrectSpaceHeader
 		return
 	}
-	key, err := signingkey.NewSigningEd25519PubKeyFromBytes(payload.Identity)
+	key, err := crypto.NewSigningEd25519PubKeyFromBytes(payload.Identity)
 	if err != nil {
 		return
 	}
diff --git a/go.mod b/go.mod
index 1c763027..fb9727d1 100644
--- a/go.mod
+++ b/go.mod
@@ -7,6 +7,7 @@ require (
 	github.com/awalterschulze/gographviz v2.0.3+incompatible
 	github.com/cespare/xxhash v1.1.0
 	github.com/cheggaaa/mb/v3 v3.0.1
+	github.com/ethereum/go-ethereum v1.11.5
 	github.com/gobwas/glob v0.2.3
 	github.com/goccy/go-graphviz v0.1.0
 	github.com/gogo/protobuf v1.3.2
@@ -31,7 +32,7 @@ require (
 	github.com/zeebo/blake3 v0.2.3
 	github.com/zeebo/errs v1.3.0
 	go.uber.org/zap v1.24.0
-	golang.org/x/exp v0.0.0-20230105202349-8879d0199aa3
+	golang.org/x/exp v0.0.0-20230206171751-46f607a40771
 	golang.org/x/net v0.8.0
 	gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22
 	gopkg.in/yaml.v3 v3.0.1
@@ -39,8 +40,10 @@ require (
 )
 
 require (
+	filippo.io/edwards25519 v1.0.0 // indirect
 	github.com/alecthomas/units v0.0.0-20210927113745-59d0afb8317a // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/crackcomm/go-gitignore v0.0.0-20170627025303-887ab5e44cc3 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
@@ -53,6 +56,7 @@ require (
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
+	github.com/holiman/uint256 v1.2.0 // indirect
 	github.com/ipfs/bbloom v0.0.4 // indirect
 	github.com/ipfs/go-bitfield v1.1.0 // indirect
 	github.com/ipfs/go-datastore v0.6.0 // indirect
@@ -87,8 +91,8 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/polydawn/refmt v0.89.0 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
-	github.com/prometheus/common v0.37.0 // indirect
-	github.com/prometheus/procfs v0.8.0 // indirect
+	github.com/prometheus/common v0.39.0 // indirect
+	github.com/prometheus/procfs v0.9.0 // indirect
 	github.com/spacemonkeygo/spacelog v0.0.0-20180420211403-2296661a0572 // indirect
 	github.com/spaolacci/murmur3 v1.1.0 // indirect
 	github.com/whyrusleeping/cbor-gen v0.0.0-20221220214510-0333c149dec0 // indirect
diff --git a/go.sum b/go.sum
index c4c9990e..af235b00 100644
--- a/go.sum
+++ b/go.sum
@@ -1,45 +1,8 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
-cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
-cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
-cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
-cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
-cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
-cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
-cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
-cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
-cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
-cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
-cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
-cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
-cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
-cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
-cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
-cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
-cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
-cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
-cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
-cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
-cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
-cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
-cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
-cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
-cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
-cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
-cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
-cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
-cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
-dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+filippo.io/edwards25519 v1.0.0 h1:0wAIcmJUqRdI8IJ/3eGi5/HwXZWPujYXXlkrQogz0Ek=
+filippo.io/edwards25519 v1.0.0/go.mod h1:N1IkdkCkiLB6tki+MYJoSx2JTY9NUlxZE7eHn5EwJns=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/alecthomas/units v0.0.0-20210927113745-59d0afb8317a h1:E/8AP5dFtMhl5KPJz66Kt9G0n+7Sn41Fy1wv9/jHOrc=
 github.com/alecthomas/units v0.0.0-20210927113745-59d0afb8317a/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
 github.com/anytypeio/go-chash v0.0.2 h1:BSpyMC3HXNkf2eosQrHM4svov0DrvxL9tb4gnHbdmbA=
@@ -48,24 +11,17 @@ github.com/awalterschulze/gographviz v2.0.3+incompatible h1:9sVEXJBJLwGX7EQVhLm2
 github.com/awalterschulze/gographviz v2.0.3+incompatible/go.mod h1:GEV5wmg4YquNw7v1kkyoX9etIk8yVmXj+AkDHuuETHs=
 github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/benbjohnson/clock v1.3.0 h1:ip6w0uFQkncKQ979AypyG0ER7mqUSBdKLOgAle/AT8A=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/btcsuite/btcd/btcec/v2 v2.2.0 h1:fzn1qaOt32TuLjFlkzYSsBC35Q3KUjT1SwPxiMSCF5k=
+github.com/btcsuite/btcd/btcec/v2 v2.2.0/go.mod h1:U7MHm051Al6XmscBQ0BoNydpOTsFAn707034b5nY8zU=
+github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1 h1:q0rUy8C/TYNBQS1+CGKw68tLOFYSNEs0TFnxxnS9+4U=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
-github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cheggaaa/mb/v3 v3.0.1 h1:BuEOipGTqybXYi5KXVCpqhR1LWN2lrurq6UrH+VBhXc=
 github.com/cheggaaa/mb/v3 v3.0.1/go.mod h1:zCt2QeYukhd/g0bIdNqF+b/kKz1hnLFNDkP49qN5kqI=
-github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
-github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
-github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/corona10/goimagehash v1.0.2 h1:pUfB0LnsJASMPGEZLj7tGY251vF+qLGqOgEP4rUs6kA=
 github.com/corona10/goimagehash v1.0.2/go.mod h1:/l9umBhvcHQXVtQO1V6Gp1yD20STawkhRnnX0D1bvVI=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
@@ -80,115 +36,56 @@ github.com/davidlazar/go-crypto v0.0.0-20200604182044-b73af7476f6c/go.mod h1:6Uh
 github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK09Y2A4Xv7EE0=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0 h1:HbphB4TFFXpv7MNrT52FGrrgVXF1owhMVTHFZIlnvd4=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0/go.mod h1:DZGJHZMqrU4JJqFAWUS2UO1+lbSKsdiOoYi9Zzey7Fc=
-github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
-github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/ethereum/go-ethereum v1.11.5 h1:3M1uan+LAUvdn+7wCEFrcMM4LJTeuxDrPTg/f31a5QQ=
+github.com/ethereum/go-ethereum v1.11.5/go.mod h1:it7x0DWnTDMfVFdXcU6Ti4KEFQynLHVRarcSlPr0HBo=
 github.com/fogleman/gg v1.3.0 h1:/7zJX8F6AaYQc57WQCyN9cAIz+4bCJGO9B+dyW29am8=
 github.com/fogleman/gg v1.3.0/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
 github.com/frankban/quicktest v1.11.3/go.mod h1:wRf/ReqHper53s+kmmSZizM8NamnL3IM0I9ntUbOk+k=
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@@ -268,18 +165,9 @@ github.com/jbenet/go-temp-err-catcher v0.1.0/go.mod h1:0kJRvmDZXNMIiJirNPEYfhpPw
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@@ -288,10 +176,7 @@ github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa02
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@@ -321,7 +206,6 @@ github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPn
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@@ -330,11 +214,6 @@ github.com/minio/sha256-simd v0.0.0-20190131020904-2d45a736cd16/go.mod h1:2FMWW+
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@@ -369,14 +248,11 @@ github.com/multiformats/go-varint v0.0.5/go.mod h1:3Ls8CIEsrijN6+B7PbrXRPxHRPuXS
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@@ -386,39 +262,18 @@ github.com/polydawn/refmt v0.0.0-20190221155625-df39d6c2d992/go.mod h1:uIp+gprXx
 github.com/polydawn/refmt v0.0.0-20190807091052-3d65705ee9f1/go.mod h1:uIp+gprXxxrWSjjklXD+mN4wed/tMfjMMmN/9+JsA9o=
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@@ -432,10 +287,8 @@ github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasO
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
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@@ -455,9 +308,7 @@ github.com/whyrusleeping/cbor-gen v0.0.0-20221220214510-0333c149dec0/go.mod h1:f
 github.com/whyrusleeping/chunker v0.0.0-20181014151217-fe64bd25879f h1:jQa4QT2UP9WYv2nzyawpKMOCl+Z/jW7djv2/J50lj9E=
 github.com/whyrusleeping/chunker v0.0.0-20181014151217-fe64bd25879f/go.mod h1:p9UJB6dDgdPgMJZs7UjUOdulKyRr9fqkS+6JKAInPy8=
 github.com/whyrusleeping/go-logging v0.0.0-20170515211332-0457bb6b88fc/go.mod h1:bopw91TMyo8J3tvftk8xmU2kPmlrt4nScJQZU2hE5EM=
-github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
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 github.com/zeebo/assert v1.1.0/go.mod h1:Pq9JiuJQpG8JLJdtkwrJESF0Foym2/D9XMU5ciN/wJ0=
@@ -468,11 +319,6 @@ github.com/zeebo/errs v1.3.0 h1:hmiaKqgYZzcVgRL1Vkc1Mn2914BbzB0IBxs+ebeutGs=
 github.com/zeebo/errs v1.3.0/go.mod h1:sgbWHsvVuTPHcqJJGQ1WhI5KbWlHYz+2+2C/LSEtCw4=
 github.com/zeebo/pcg v1.0.1 h1:lyqfGeWiv4ahac6ttHs+I5hwtH/+1mrhlCtVNQM2kHo=
 github.com/zeebo/pcg v1.0.1/go.mod h1:09F0S9iiKrwn9rlI5yjLkmrug154/YRW6KnnXVDM/l4=
-go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
-go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
-go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
-go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
-go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
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 go.opentelemetry.io/otel/trace v1.11.2 h1:Xf7hWSF2Glv0DE3MH7fBHvtpSBsjcBUe5MYAmZM/+y0=
@@ -492,11 +338,9 @@ go.uber.org/zap v1.16.0/go.mod h1:MA8QOfq0BHJwdXa996Y4dYkAqRKB8/1K1QMMZVaNZjQ=
 go.uber.org/zap v1.19.1/go.mod h1:j3DNczoxDZroyBnOT1L/Q79cfUMGZxlv/9dzN7SM1rI=
 go.uber.org/zap v1.24.0 h1:FiJd5l1UOLj0wCgbSE0rwwXHzEdAZS6hiiSnxJN/D60=
 go.uber.org/zap v1.24.0/go.mod h1:2kMP+WWQ8aoFoedH3T2sq6iJ2yDWpHbP0f6MQbS9Gkg=
-golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200204104054-c9f3fb736b72/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
@@ -505,207 +349,61 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
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@@ -716,114 +414,26 @@ golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8T
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-google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
-google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
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-google.golang.org/genproto v0.0.0-20191108220845-16a3f7862a1a/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
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-google.golang.org/genproto v0.0.0-20200115191322-ca5a22157cba/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
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-google.golang.org/genproto v0.0.0-20200212174721-66ed5ce911ce/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200224152610-e50cd9704f63/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200228133532-8c2c7df3a383/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200305110556-506484158171/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200312145019-da6875a35672/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
-google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
-google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
-google.golang.org/genproto v0.0.0-20200729003335-053ba62fc06f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
-google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
-google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
-google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
-google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-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 v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
-google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
 google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22 h1:VpOs+IwYnYBaFnrNAeB8UUWtL3vEUnzSCL1nVjPhqrw=
 gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
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 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
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 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
-honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 lukechampine.com/blake3 v1.1.7 h1:GgRMhmdsuK8+ii6UZFDL8Nb+VyMwadAgcJyfYHxG6n0=
 lukechampine.com/blake3 v1.1.7/go.mod h1:tkKEOtDkNtklkXtLNEOGNq5tcV90tJiA1vAA12R78LA=
-rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
-rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
-rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
 storj.io/drpc v0.0.32 h1:5p5ZwsK/VOgapaCu+oxaPVwO6UwIs+iwdMiD50+R4PI=
 storj.io/drpc v0.0.32/go.mod h1:6rcOyR/QQkSTX/9L5ZGtlZaE2PtXTTZl8d+ulSeeYEg=
diff --git a/net/secureservice/credential.go b/net/secureservice/credential.go
index b9dffaf7..7dc1bf79 100644
--- a/net/secureservice/credential.go
+++ b/net/secureservice/credential.go
@@ -4,7 +4,7 @@ import (
 	"github.com/anytypeio/any-sync/commonspace/object/accountdata"
 	"github.com/anytypeio/any-sync/net/secureservice/handshake"
 	"github.com/anytypeio/any-sync/net/secureservice/handshake/handshakeproto"
-	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/libp2p/go-libp2p/core/sec"
 	"go.uber.org/zap"
 )
@@ -57,7 +57,7 @@ func (p *peerSignVerifier) CheckCredential(sc sec.SecureConn, cred *handshakepro
 	if err = msg.Unmarshal(cred.Payload); err != nil {
 		return nil, handshake.ErrUnexpectedPayload
 	}
-	pubKey, err := signingkey.NewSigningEd25519PubKeyFromBytes(msg.Identity)
+	pubKey, err := crypto.NewSigningEd25519PubKeyFromBytes(msg.Identity)
 	if err != nil {
 		return nil, handshake.ErrInvalidCredentials
 	}
diff --git a/net/secureservice/handshake/handshake_test.go b/net/secureservice/handshake/handshake_test.go
index e32a9362..b19acae8 100644
--- a/net/secureservice/handshake/handshake_test.go
+++ b/net/secureservice/handshake/handshake_test.go
@@ -3,7 +3,7 @@ package handshake
 import (
 	"context"
 	"github.com/anytypeio/any-sync/net/secureservice/handshake/handshakeproto"
-	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
+	crypto2 "github.com/anytypeio/any-sync/util/crypto"
 	peer2 "github.com/anytypeio/any-sync/util/peer"
 	"github.com/libp2p/go-libp2p/core/crypto"
 	"github.com/libp2p/go-libp2p/core/network"
@@ -558,12 +558,12 @@ func (t *testCredChecker) CheckCredential(sc sec.SecureConn, cred *handshakeprot
 
 func newConnPair(t require.TestingT) (sc1, sc2 *secConn) {
 	c1, c2 := net.Pipe()
-	sk1, _, err := signingkey.GenerateRandomEd25519KeyPair()
+	sk1, _, err := crypto2.GenerateRandomEd25519KeyPair()
 	require.NoError(t, err)
 	sk1b, err := sk1.Raw()
 	signKey1, err := crypto.UnmarshalEd25519PrivateKey(sk1b)
 	require.NoError(t, err)
-	sk2, _, err := signingkey.GenerateRandomEd25519KeyPair()
+	sk2, _, err := crypto2.GenerateRandomEd25519KeyPair()
 	require.NoError(t, err)
 	sk2b, err := sk2.Raw()
 	signKey2, err := crypto.UnmarshalEd25519PrivateKey(sk2b)
@@ -593,7 +593,7 @@ type secConn struct {
 
 func (s *secConn) LocalPeer() peer.ID {
 	skB, _ := s.localKey.Raw()
-	sk, _ := signingkey.NewSigningEd25519PubKeyFromBytes(skB)
+	sk, _ := crypto2.NewSigningEd25519PubKeyFromBytes(skB)
 	lp, _ := peer2.IdFromSigningPubKey(sk)
 	return lp
 }
diff --git a/nodeconf/service.go b/nodeconf/service.go
index 9b242a0f..234f22f7 100644
--- a/nodeconf/service.go
+++ b/nodeconf/service.go
@@ -4,6 +4,7 @@ import (
 	commonaccount "github.com/anytypeio/any-sync/accountservice"
 	"github.com/anytypeio/any-sync/app"
 	"github.com/anytypeio/any-sync/app/logger"
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/anytypeio/any-sync/util/keys"
 	"github.com/anytypeio/any-sync/util/keys/asymmetric/encryptionkey"
 	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
@@ -121,7 +122,7 @@ func nodeFromConfigNode(n NodeConfig) (*Node, error) {
 		return nil, err
 	}
 
-	sigPubKey, err := signingkey.UnmarshalEd25519PublicKey(icRaw)
+	sigPubKey, err := crypto.UnmarshalEd25519PublicKey(icRaw)
 	if err != nil {
 		return nil, err
 	}
diff --git a/testutil/accounttest/accountservice.go b/testutil/accounttest/accountservice.go
index 26941504..af3eea9f 100644
--- a/testutil/accounttest/accountservice.go
+++ b/testutil/accounttest/accountservice.go
@@ -5,9 +5,9 @@ import (
 	"github.com/anytypeio/any-sync/app"
 	"github.com/anytypeio/any-sync/commonspace/object/accountdata"
 	"github.com/anytypeio/any-sync/nodeconf"
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/anytypeio/any-sync/util/keys"
 	"github.com/anytypeio/any-sync/util/keys/asymmetric/encryptionkey"
-	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey"
 	"github.com/anytypeio/any-sync/util/peer"
 )
 
@@ -25,7 +25,7 @@ func (s *AccountTestService) Init(a *app.App) (err error) {
 		return
 	}
 
-	signKey, _, err := signingkey.GenerateRandomEd25519KeyPair()
+	signKey, _, err := crypto.GenerateRandomEd25519KeyPair()
 	if err != nil {
 		return
 	}
@@ -34,7 +34,7 @@ func (s *AccountTestService) Init(a *app.App) (err error) {
 		return
 	}
 
-	peerKey, _, err := signingkey.GenerateRandomEd25519KeyPair()
+	peerKey, _, err := crypto.GenerateRandomEd25519KeyPair()
 	if err != nil {
 		return err
 	}
diff --git a/util/crypto/cryptoproto/crypto.pb.go b/util/crypto/cryptoproto/crypto.pb.go
new file mode 100644
index 00000000..af4ac14c
--- /dev/null
+++ b/util/crypto/cryptoproto/crypto.pb.go
@@ -0,0 +1,596 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: util/keys/cryptoproto/protos/crypto.proto
+
+package cryptoproto
+
+import (
+	fmt "fmt"
+	proto "github.com/gogo/protobuf/proto"
+	io "io"
+	math "math"
+	math_bits "math/bits"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
+
+type KeyType int32
+
+const (
+	KeyType_RSA       KeyType = 0
+	KeyType_Ed25519   KeyType = 1
+	KeyType_Secp256k1 KeyType = 2
+	KeyType_ECDSA     KeyType = 3
+)
+
+var KeyType_name = map[int32]string{
+	0: "RSA",
+	1: "Ed25519",
+	2: "Secp256k1",
+	3: "ECDSA",
+}
+
+var KeyType_value = map[string]int32{
+	"RSA":       0,
+	"Ed25519":   1,
+	"Secp256k1": 2,
+	"ECDSA":     3,
+}
+
+func (x KeyType) String() string {
+	return proto.EnumName(KeyType_name, int32(x))
+}
+
+func (KeyType) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_761a9295b23470c2, []int{0}
+}
+
+type PublicKey struct {
+	Type KeyType `protobuf:"varint,1,opt,name=Type,proto3,enum=utilcrypto.KeyType" json:"Type,omitempty"`
+	Data []byte  `protobuf:"bytes,2,opt,name=Data,proto3" json:"Data,omitempty"`
+}
+
+func (m *PublicKey) Reset()         { *m = PublicKey{} }
+func (m *PublicKey) String() string { return proto.CompactTextString(m) }
+func (*PublicKey) ProtoMessage()    {}
+func (*PublicKey) Descriptor() ([]byte, []int) {
+	return fileDescriptor_761a9295b23470c2, []int{0}
+}
+func (m *PublicKey) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *PublicKey) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_PublicKey.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *PublicKey) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_PublicKey.Merge(m, src)
+}
+func (m *PublicKey) XXX_Size() int {
+	return m.Size()
+}
+func (m *PublicKey) XXX_DiscardUnknown() {
+	xxx_messageInfo_PublicKey.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_PublicKey proto.InternalMessageInfo
+
+func (m *PublicKey) GetType() KeyType {
+	if m != nil {
+		return m.Type
+	}
+	return KeyType_RSA
+}
+
+func (m *PublicKey) GetData() []byte {
+	if m != nil {
+		return m.Data
+	}
+	return nil
+}
+
+type PrivateKey struct {
+	Type KeyType `protobuf:"varint,1,opt,name=Type,proto3,enum=utilcrypto.KeyType" json:"Type,omitempty"`
+	Data []byte  `protobuf:"bytes,2,opt,name=Data,proto3" json:"Data,omitempty"`
+}
+
+func (m *PrivateKey) Reset()         { *m = PrivateKey{} }
+func (m *PrivateKey) String() string { return proto.CompactTextString(m) }
+func (*PrivateKey) ProtoMessage()    {}
+func (*PrivateKey) Descriptor() ([]byte, []int) {
+	return fileDescriptor_761a9295b23470c2, []int{1}
+}
+func (m *PrivateKey) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *PrivateKey) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_PrivateKey.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *PrivateKey) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_PrivateKey.Merge(m, src)
+}
+func (m *PrivateKey) XXX_Size() int {
+	return m.Size()
+}
+func (m *PrivateKey) XXX_DiscardUnknown() {
+	xxx_messageInfo_PrivateKey.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_PrivateKey proto.InternalMessageInfo
+
+func (m *PrivateKey) GetType() KeyType {
+	if m != nil {
+		return m.Type
+	}
+	return KeyType_RSA
+}
+
+func (m *PrivateKey) GetData() []byte {
+	if m != nil {
+		return m.Data
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterEnum("utilcrypto.KeyType", KeyType_name, KeyType_value)
+	proto.RegisterType((*PublicKey)(nil), "utilcrypto.PublicKey")
+	proto.RegisterType((*PrivateKey)(nil), "utilcrypto.PrivateKey")
+}
+
+func init() {
+	proto.RegisterFile("util/keys/cryptoproto/protos/crypto.proto", fileDescriptor_761a9295b23470c2)
+}
+
+var fileDescriptor_761a9295b23470c2 = []byte{
+	// 222 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xd2, 0x2c, 0x2d, 0xc9, 0xcc,
+	0xd1, 0xcf, 0x4e, 0xad, 0x2c, 0xd6, 0x4f, 0x2e, 0xaa, 0x2c, 0x28, 0xc9, 0x2f, 0x28, 0xca, 0x2f,
+	0xc9, 0xd7, 0x07, 0x93, 0x30, 0x21, 0x3d, 0x30, 0x4f, 0x88, 0x0b, 0xa4, 0x14, 0x22, 0xa2, 0xe4,
+	0xc1, 0xc5, 0x19, 0x50, 0x9a, 0x94, 0x93, 0x99, 0xec, 0x9d, 0x5a, 0x29, 0xa4, 0xce, 0xc5, 0x12,
+	0x52, 0x59, 0x90, 0x2a, 0xc1, 0xa8, 0xc0, 0xa8, 0xc1, 0x67, 0x24, 0xac, 0x87, 0x50, 0xa7, 0xe7,
+	0x9d, 0x5a, 0x09, 0x92, 0x0a, 0x02, 0x2b, 0x10, 0x12, 0xe2, 0x62, 0x71, 0x49, 0x2c, 0x49, 0x94,
+	0x60, 0x52, 0x60, 0xd4, 0xe0, 0x09, 0x02, 0xb3, 0x95, 0x3c, 0xb9, 0xb8, 0x02, 0x8a, 0x32, 0xcb,
+	0x12, 0x4b, 0x52, 0x29, 0x35, 0x4a, 0xcb, 0x92, 0x8b, 0x1d, 0xaa, 0x48, 0x88, 0x9d, 0x8b, 0x39,
+	0x28, 0xd8, 0x51, 0x80, 0x41, 0x88, 0x9b, 0x8b, 0xdd, 0x35, 0xc5, 0xc8, 0xd4, 0xd4, 0xd0, 0x52,
+	0x80, 0x51, 0x88, 0x97, 0x8b, 0x33, 0x38, 0x35, 0xb9, 0xc0, 0xc8, 0xd4, 0x2c, 0xdb, 0x50, 0x80,
+	0x49, 0x88, 0x93, 0x8b, 0xd5, 0xd5, 0xd9, 0x25, 0xd8, 0x51, 0x80, 0xd9, 0x49, 0xff, 0xc4, 0x23,
+	0x39, 0xc6, 0x0b, 0x8f, 0xe4, 0x18, 0x1f, 0x3c, 0x92, 0x63, 0x9c, 0xf0, 0x58, 0x8e, 0xe1, 0xc2,
+	0x63, 0x39, 0x86, 0x1b, 0x8f, 0xe5, 0x18, 0xa2, 0x44, 0xb1, 0x06, 0x50, 0x12, 0x1b, 0x98, 0x32,
+	0x06, 0x04, 0x00, 0x00, 0xff, 0xff, 0x9d, 0x04, 0x8a, 0xb8, 0x40, 0x01, 0x00, 0x00,
+}
+
+func (m *PublicKey) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *PublicKey) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *PublicKey) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Data) > 0 {
+		i -= len(m.Data)
+		copy(dAtA[i:], m.Data)
+		i = encodeVarintCrypto(dAtA, i, uint64(len(m.Data)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if m.Type != 0 {
+		i = encodeVarintCrypto(dAtA, i, uint64(m.Type))
+		i--
+		dAtA[i] = 0x8
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *PrivateKey) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *PrivateKey) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *PrivateKey) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Data) > 0 {
+		i -= len(m.Data)
+		copy(dAtA[i:], m.Data)
+		i = encodeVarintCrypto(dAtA, i, uint64(len(m.Data)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if m.Type != 0 {
+		i = encodeVarintCrypto(dAtA, i, uint64(m.Type))
+		i--
+		dAtA[i] = 0x8
+	}
+	return len(dAtA) - i, nil
+}
+
+func encodeVarintCrypto(dAtA []byte, offset int, v uint64) int {
+	offset -= sovCrypto(v)
+	base := offset
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return base
+}
+func (m *PublicKey) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.Type != 0 {
+		n += 1 + sovCrypto(uint64(m.Type))
+	}
+	l = len(m.Data)
+	if l > 0 {
+		n += 1 + l + sovCrypto(uint64(l))
+	}
+	return n
+}
+
+func (m *PrivateKey) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.Type != 0 {
+		n += 1 + sovCrypto(uint64(m.Type))
+	}
+	l = len(m.Data)
+	if l > 0 {
+		n += 1 + l + sovCrypto(uint64(l))
+	}
+	return n
+}
+
+func sovCrypto(x uint64) (n int) {
+	return (math_bits.Len64(x|1) + 6) / 7
+}
+func sozCrypto(x uint64) (n int) {
+	return sovCrypto(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *PublicKey) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowCrypto
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: PublicKey: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: PublicKey: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Type", wireType)
+			}
+			m.Type = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCrypto
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.Type |= KeyType(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Data", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCrypto
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthCrypto
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthCrypto
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Data = append(m.Data[:0], dAtA[iNdEx:postIndex]...)
+			if m.Data == nil {
+				m.Data = []byte{}
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipCrypto(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthCrypto
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *PrivateKey) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowCrypto
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: PrivateKey: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: PrivateKey: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Type", wireType)
+			}
+			m.Type = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCrypto
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.Type |= KeyType(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Data", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCrypto
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthCrypto
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthCrypto
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Data = append(m.Data[:0], dAtA[iNdEx:postIndex]...)
+			if m.Data == nil {
+				m.Data = []byte{}
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipCrypto(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthCrypto
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func skipCrypto(dAtA []byte) (n int, err error) {
+	l := len(dAtA)
+	iNdEx := 0
+	depth := 0
+	for iNdEx < l {
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return 0, ErrIntOverflowCrypto
+			}
+			if iNdEx >= l {
+				return 0, io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		wireType := int(wire & 0x7)
+		switch wireType {
+		case 0:
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowCrypto
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				iNdEx++
+				if dAtA[iNdEx-1] < 0x80 {
+					break
+				}
+			}
+		case 1:
+			iNdEx += 8
+		case 2:
+			var length int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowCrypto
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				length |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if length < 0 {
+				return 0, ErrInvalidLengthCrypto
+			}
+			iNdEx += length
+		case 3:
+			depth++
+		case 4:
+			if depth == 0 {
+				return 0, ErrUnexpectedEndOfGroupCrypto
+			}
+			depth--
+		case 5:
+			iNdEx += 4
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+		if iNdEx < 0 {
+			return 0, ErrInvalidLengthCrypto
+		}
+		if depth == 0 {
+			return iNdEx, nil
+		}
+	}
+	return 0, io.ErrUnexpectedEOF
+}
+
+var (
+	ErrInvalidLengthCrypto        = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowCrypto          = fmt.Errorf("proto: integer overflow")
+	ErrUnexpectedEndOfGroupCrypto = fmt.Errorf("proto: unexpected end of group")
+)
diff --git a/util/crypto/cryptoproto/protos/crypto.proto b/util/crypto/cryptoproto/protos/crypto.proto
new file mode 100644
index 00000000..02352719
--- /dev/null
+++ b/util/crypto/cryptoproto/protos/crypto.proto
@@ -0,0 +1,20 @@
+syntax = "proto3";
+package utilcrypto;
+option go_package = "util/crypto/cryptoproto";
+
+enum KeyType {
+    RSA = 0;
+    Ed25519 = 1;
+    Secp256k1 = 2;
+    ECDSA = 3;
+}
+
+message PublicKey {
+    KeyType Type = 1;
+    bytes Data = 2;
+}
+
+message PrivateKey {
+    KeyType Type = 1;
+    bytes Data = 2;
+}
\ No newline at end of file
diff --git a/util/crypto/curve25519.go b/util/crypto/curve25519.go
new file mode 100644
index 00000000..f60050a5
--- /dev/null
+++ b/util/crypto/curve25519.go
@@ -0,0 +1,52 @@
+package crypto
+
+import (
+	"crypto/ed25519"
+	"crypto/sha512"
+	"filippo.io/edwards25519"
+	"golang.org/x/crypto/curve25519"
+)
+
+// Ed25519PublicKeyToCurve25519 converts an Ed25519 public key to a Curve25519 public key
+func Ed25519PublicKeyToCurve25519(pk ed25519.PublicKey) []byte {
+	// Unmarshalling public key into edwards curve point
+	epk, err := (&edwards25519.Point{}).SetBytes(pk)
+	if err != nil {
+		panic(err)
+	}
+	// converting to curve25519 (see here for more details https://github.com/golang/go/issues/20504)
+	return epk.BytesMontgomery()
+}
+
+// ISC License
+//
+// Copyright (c) 2013-2020
+// Frank Denis <j at pureftpd dot org>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// https://github.com/jedisct1/libsodium/blob/master/src/libsodium/crypto_sign/ed25519/ref10/keypair.c#L69-L83
+
+// Ed25519PrivateKeyToCurve25519 converts an Ed25519 private key to a Curve25519 private key
+// This code is originally taken from here https://github.com/jorrizza/ed2curve25519/blob/master/ed2curve25519.go
+func Ed25519PrivateKeyToCurve25519(pk ed25519.PrivateKey) []byte {
+	h := sha512.New()
+	h.Write(pk.Seed())
+	out := h.Sum(nil)
+
+	// used in libsodium
+	out[0] &= 248
+	out[31] &= 127
+	out[31] |= 64
+
+	return out[:curve25519.ScalarSize]
+}
diff --git a/util/keys/asymmetric/signingkey/ed25519.go b/util/crypto/ed25519.go
similarity index 50%
rename from util/keys/asymmetric/signingkey/ed25519.go
rename to util/crypto/ed25519.go
index cfa3f262..0d2e9a90 100644
--- a/util/keys/asymmetric/signingkey/ed25519.go
+++ b/util/crypto/ed25519.go
@@ -1,4 +1,4 @@
-package signingkey
+package crypto
 
 import (
 	"bytes"
@@ -7,18 +7,37 @@ import (
 	"crypto/subtle"
 	"errors"
 	"fmt"
-	"github.com/anytypeio/any-sync/util/keys"
 	"io"
 )
 
-// Ed25519PrivateKey is an ed25519 private key.
-type Ed25519PrivateKey struct {
-	k ed25519.PrivateKey
+// Ed25519PrivKey is an ed25519 private key.
+type Ed25519PrivKey struct {
+	privKey   ed25519.PrivateKey
+	privCurve *[32]byte
+	pubCurve  *[32]byte
 }
 
-// Ed25519PublicKey is an ed25519 public key.
-type Ed25519PublicKey struct {
-	k ed25519.PublicKey
+// Ed25519PubKey is an ed25519 public key.
+type Ed25519PubKey struct {
+	pubKey   ed25519.PublicKey
+	pubCurve *[32]byte
+}
+
+func NewEd25519PrivKey(privKey ed25519.PrivateKey) PrivKey {
+	pK := &Ed25519PrivKey{privKey: privKey}
+	pubKey := pK.pubKeyBytes()
+	privCurve := Ed25519PrivateKeyToCurve25519(privKey)
+	pubCurve := Ed25519PublicKeyToCurve25519(pubKey)
+	pK.privCurve = (*[32]byte)(privCurve)
+	pK.pubCurve = (*[32]byte)(pubCurve)
+	return pK
+}
+
+func NewEd25519PubKey(pubKey ed25519.PublicKey) PubKey {
+	pK := &Ed25519PubKey{pubKey: pubKey}
+	pubCurve := Ed25519PublicKeyToCurve25519(pubKey)
+	pK.pubCurve = (*[32]byte)(pubCurve)
+	return pK
 }
 
 func NewSigningEd25519PubKeyFromBytes(bytes []byte) (PubKey, error) {
@@ -40,69 +59,75 @@ func GenerateEd25519Key(src io.Reader) (PrivKey, PubKey, error) {
 		return nil, nil, err
 	}
 
-	return &Ed25519PrivateKey{
-			k: priv,
-		},
-		&Ed25519PublicKey{
-			k: pub,
-		},
+	return NewEd25519PrivKey(priv),
+		NewEd25519PubKey(pub),
 		nil
 }
 
 // Raw private key bytes.
-func (k *Ed25519PrivateKey) Raw() ([]byte, error) {
-	// The Ed25519 private key contains two 32-bytes curve points, the private
-	// key and the public key.
-	// It makes it more efficient to get the public key without re-computing an
-	// elliptic curve multiplication.
-	buf := make([]byte, len(k.k))
-	copy(buf, k.k)
+func (k *Ed25519PrivKey) Raw() ([]byte, error) {
+	buf := make([]byte, len(k.privKey))
+	copy(buf, k.privKey)
 
 	return buf, nil
 }
 
-func (k *Ed25519PrivateKey) pubKeyBytes() []byte {
-	return k.k[ed25519.PrivateKeySize-ed25519.PublicKeySize:]
+func (k *Ed25519PrivKey) pubKeyBytes() []byte {
+	return k.privKey[ed25519.PrivateKeySize-ed25519.PublicKeySize:]
 }
 
 // Equals compares two ed25519 private keys.
-func (k *Ed25519PrivateKey) Equals(o keys.Key) bool {
-	edk, ok := o.(*Ed25519PrivateKey)
+func (k *Ed25519PrivKey) Equals(o Key) bool {
+	edk, ok := o.(*Ed25519PrivKey)
 	if !ok {
-		return keys.KeyEquals(k, o)
+		return KeyEquals(k, o)
 	}
 
-	return subtle.ConstantTimeCompare(k.k, edk.k) == 1
+	return subtle.ConstantTimeCompare(k.privKey, edk.privKey) == 1
 }
 
 // GetPublic returns an ed25519 public key from a private key.
-func (k *Ed25519PrivateKey) GetPublic() PubKey {
-	return &Ed25519PublicKey{k: k.pubKeyBytes()}
+func (k *Ed25519PrivKey) GetPublic() PubKey {
+	return &Ed25519PubKey{
+		pubKey:   k.pubKeyBytes(),
+		pubCurve: k.pubCurve,
+	}
 }
 
 // Sign returns a signature from an input message.
-func (k *Ed25519PrivateKey) Sign(msg []byte) ([]byte, error) {
-	return ed25519.Sign(k.k, msg), nil
+func (k *Ed25519PrivKey) Sign(msg []byte) ([]byte, error) {
+	return ed25519.Sign(k.privKey, msg), nil
+}
+
+// Decrypt decrypts the message
+func (k *Ed25519PrivKey) Decrypt(msg []byte) ([]byte, error) {
+	return DecryptX25519(k.privCurve, k.pubCurve, msg)
 }
 
 // Raw public key bytes.
-func (k *Ed25519PublicKey) Raw() ([]byte, error) {
-	return k.k, nil
+func (k *Ed25519PubKey) Raw() ([]byte, error) {
+	return k.pubKey, nil
+}
+
+// Encrypt message
+func (k *Ed25519PubKey) Encrypt(msg []byte) (data []byte, err error) {
+	data = EncryptX25519(k.pubCurve, msg)
+	return
 }
 
 // Equals compares two ed25519 public keys.
-func (k *Ed25519PublicKey) Equals(o keys.Key) bool {
-	edk, ok := o.(*Ed25519PublicKey)
+func (k *Ed25519PubKey) Equals(o Key) bool {
+	edk, ok := o.(*Ed25519PubKey)
 	if !ok {
-		return keys.KeyEquals(k, o)
+		return KeyEquals(k, o)
 	}
 
-	return bytes.Equal(k.k, edk.k)
+	return bytes.Equal(k.pubKey, edk.pubKey)
 }
 
 // Verify checks a signature agains the input data.
-func (k *Ed25519PublicKey) Verify(data []byte, sig []byte) (bool, error) {
-	return ed25519.Verify(k.k, data, sig), nil
+func (k *Ed25519PubKey) Verify(data []byte, sig []byte) (bool, error) {
+	return ed25519.Verify(k.pubKey, data, sig), nil
 }
 
 // UnmarshalEd25519PublicKey returns a public key from input bytes.
@@ -111,9 +136,7 @@ func UnmarshalEd25519PublicKey(data []byte) (PubKey, error) {
 		return nil, errors.New("expect ed25519 public key data size to be 32")
 	}
 
-	return &Ed25519PublicKey{
-		k: ed25519.PublicKey(data),
-	}, nil
+	return NewEd25519PubKey(data), nil
 }
 
 // UnmarshalEd25519PrivateKey returns a private key from input bytes.
@@ -141,7 +164,5 @@ func UnmarshalEd25519PrivateKey(data []byte) (PrivKey, error) {
 		)
 	}
 
-	return &Ed25519PrivateKey{
-		k: ed25519.PrivateKey(data),
-	}, nil
+	return NewEd25519PrivKey(data), nil
 }
diff --git a/util/crypto/ed25519_test.go b/util/crypto/ed25519_test.go
new file mode 100644
index 00000000..abda9e44
--- /dev/null
+++ b/util/crypto/ed25519_test.go
@@ -0,0 +1,19 @@
+package crypto
+
+import (
+	"crypto/rand"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_EncryptDecrypt(t *testing.T) {
+	privKey, pubKey, _ := GenerateEd25519Key(rand.Reader)
+	msg := make([]byte, 32768)
+	_, err := rand.Read(msg)
+	require.NoError(t, err)
+	enc, err := pubKey.Encrypt(msg)
+	require.NoError(t, err)
+	dec, err := privKey.Decrypt(enc)
+	require.NoError(t, err)
+	require.Equal(t, dec, msg)
+}
diff --git a/util/crypto/key.go b/util/crypto/key.go
new file mode 100644
index 00000000..50b01c97
--- /dev/null
+++ b/util/crypto/key.go
@@ -0,0 +1,48 @@
+package crypto
+
+import (
+	"crypto/subtle"
+)
+
+// Key is an abstract interface for all types of keys
+type Key interface {
+	// Equals returns if the keys are equal
+	Equals(Key) bool
+
+	// Raw returns raw key
+	Raw() ([]byte, error)
+}
+
+// PrivKey is an interface for keys that should be used for signing and decryption
+type PrivKey interface {
+	Key
+
+	// Decrypt decrypts the message and returns the result
+	Decrypt(message []byte) ([]byte, error)
+	// Sign signs the raw bytes and returns the signature
+	Sign([]byte) ([]byte, error)
+	// GetPublic returns the associated public key
+	GetPublic() PubKey
+}
+
+// PubKey is the public key used to verify the signatures made by SignPrivKey
+type PubKey interface {
+	Key
+
+	// Encrypt encrypts the message and returns the result
+	Encrypt(message []byte) ([]byte, error)
+	// Verify verifies the signed message and the signature
+	Verify(data []byte, sig []byte) (bool, error)
+}
+
+func KeyEquals(k1, k2 Key) bool {
+	a, err := k1.Raw()
+	if err != nil {
+		return false
+	}
+	b, err := k2.Raw()
+	if err != nil {
+		return false
+	}
+	return subtle.ConstantTimeCompare(a, b) == 1
+}
diff --git a/util/crypto/x25519.go b/util/crypto/x25519.go
new file mode 100644
index 00000000..ef2ab05d
--- /dev/null
+++ b/util/crypto/x25519.go
@@ -0,0 +1,40 @@
+package crypto
+
+import (
+	"crypto/rand"
+	"errors"
+	"golang.org/x/crypto/blake2b"
+	"golang.org/x/crypto/nacl/box"
+)
+
+var ErrX25519DecryptionFailed = errors.New("failed decryption with x25519 key")
+
+// EncryptX25519 takes a x25519 public key and encrypts the message
+func EncryptX25519(pubKey *[32]byte, msg []byte) []byte {
+	// see discussion here https://github.com/golang/go/issues/29128
+	var nonce [24]byte
+	epk, esk, _ := box.GenerateKey(rand.Reader)
+	// nonce logic is taken from libsodium https://github.com/jedisct1/libsodium/blob/master/src/libsodium/crypto_box/crypto_box_seal.c
+	nonceWriter, _ := blake2b.New(24, nil)
+	nonceSlice := nonceWriter.Sum(append(epk[:], pubKey[:]...))
+	copy(nonce[:], nonceSlice)
+
+	return box.Seal(epk[:], msg, &nonce, pubKey, esk)
+}
+
+// DecryptX25519 takes a x25519 private and public key and decrypts the message
+func DecryptX25519(privKey, pubKey *[32]byte, encrypted []byte) ([]byte, error) {
+	var epk [32]byte
+	var nonce [24]byte
+	copy(epk[:], encrypted[:32])
+
+	nonceWriter, _ := blake2b.New(24, nil)
+	nonceSlice := nonceWriter.Sum(append(epk[:], pubKey[:]...))
+	copy(nonce[:], nonceSlice)
+
+	decrypted, ok := box.Open(nil, encrypted[32:], &nonce, &epk, privKey)
+	if !ok {
+		return nil, ErrX25519DecryptionFailed
+	}
+	return decrypted, nil
+}
diff --git a/util/keys/asymmetric/encryptionkey/encryptionkey.go b/util/keys/asymmetric/encryptionkey/encryptionkey.go
index bbd41aad..9c4215ce 100644
--- a/util/keys/asymmetric/encryptionkey/encryptionkey.go
+++ b/util/keys/asymmetric/encryptionkey/encryptionkey.go
@@ -1,18 +1,18 @@
 package encryptionkey
 
 import (
-	"github.com/anytypeio/any-sync/util/keys"
+	"github.com/anytypeio/any-sync/util/crypto"
 )
 
 type PrivKey interface {
-	keys.Key
+	crypto.Key
 
 	Decrypt([]byte) ([]byte, error)
 	GetPublic() PubKey
 }
 
 type PubKey interface {
-	keys.Key
+	crypto.Key
 
 	Encrypt(data []byte) ([]byte, error)
 }
diff --git a/util/keys/asymmetric/encryptionkey/rsa.go b/util/keys/asymmetric/encryptionkey/rsa.go
index 80fc599a..855daf55 100644
--- a/util/keys/asymmetric/encryptionkey/rsa.go
+++ b/util/keys/asymmetric/encryptionkey/rsa.go
@@ -7,7 +7,7 @@ import (
 	"crypto/subtle"
 	"crypto/x509"
 	"errors"
-	"github.com/anytypeio/any-sync/util/keys"
+	"github.com/anytypeio/any-sync/util/crypto"
 	"github.com/cespare/xxhash"
 	mrand "golang.org/x/exp/rand"
 	"io"
@@ -30,7 +30,7 @@ type EncryptionRsaPubKey struct {
 	pubKey rsa.PublicKey
 }
 
-func (e *EncryptionRsaPubKey) Equals(key keys.Key) bool {
+func (e *EncryptionRsaPubKey) Equals(key crypto.Key) bool {
 	other, ok := (key).(*EncryptionRsaPubKey)
 	if !ok {
 		return keyEquals(e, key)
@@ -48,7 +48,7 @@ func (e *EncryptionRsaPubKey) Encrypt(data []byte) ([]byte, error) {
 	return rsa.EncryptOAEP(hash, rand.Reader, &e.pubKey, data, nil)
 }
 
-func (e *EncryptionRsaPrivKey) Equals(key keys.Key) bool {
+func (e *EncryptionRsaPrivKey) Equals(key crypto.Key) bool {
 	other, ok := (key).(*EncryptionRsaPrivKey)
 	if !ok {
 		return keyEquals(e, key)
@@ -127,7 +127,7 @@ func NewEncryptionRsaPubKeyFromBytes(bytes []byte) (PubKey, error) {
 	return &EncryptionRsaPubKey{pubKey: *pk}, nil
 }
 
-func keyEquals(k1, k2 keys.Key) bool {
+func keyEquals(k1, k2 crypto.Key) bool {
 	a, err := k1.Raw()
 	if err != nil {
 		return false
diff --git a/util/keys/asymmetric/signingkey/edwards25519/ed25519.go b/util/keys/asymmetric/signingkey/edwards25519/ed25519.go
new file mode 100644
index 00000000..12e8086a
--- /dev/null
+++ b/util/keys/asymmetric/signingkey/edwards25519/ed25519.go
@@ -0,0 +1,53 @@
+package edwards25519
+
+import (
+	"crypto/ed25519"
+	"crypto/sha512"
+	"filippo.io/edwards25519"
+	"golang.org/x/crypto/curve25519"
+)
+
+// Ed25519PublicKeyToCurve25519 converts an Ed25519 public key to a Curve25519 public key
+func Ed25519PublicKeyToCurve25519(pk ed25519.PublicKey) []byte {
+	// Unmarshalling public key into edwards curve point
+	epk, err := (&edwards25519.Point{}).SetBytes(pk)
+	if err != nil {
+		panic(err)
+	}
+	// converting to curve25519 (see here for more details https://github.com/golang/go/issues/20504)
+	return epk.BytesMontgomery()
+}
+
+/*
+ * ISC License
+ *
+ * Copyright (c) 2013-2020
+ * Frank Denis <j at pureftpd dot org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+// https://github.com/jedisct1/libsodium/blob/master/src/libsodium/crypto_sign/ed25519/ref10/keypair.c#L69-L83
+
+// Ed25519PrivateKeyToCurve25519 converts an Ed25519 private key to a Curve25519 private key
+func Ed25519PrivateKeyToCurve25519(pk ed25519.PrivateKey) []byte {
+	h := sha512.New()
+	h.Write(pk.Seed())
+	out := h.Sum(nil)
+
+	out[0] &= 248
+	out[31] &= 127
+	out[31] |= 64
+
+	return out[:curve25519.ScalarSize]
+}
diff --git a/util/keys/asymmetric/signingkey/signingkey.go b/util/keys/asymmetric/signingkey/signingkey.go
index d07d939d..f284f87a 100644
--- a/util/keys/asymmetric/signingkey/signingkey.go
+++ b/util/keys/asymmetric/signingkey/signingkey.go
@@ -1,19 +1,59 @@
 package signingkey
 
 import (
-	"github.com/anytypeio/any-sync/util/keys"
+	"crypto/ed25519"
+	"crypto/rand"
+	"github.com/anytypeio/any-sync/util/keys/asymmetric/signingkey/edwards25519"
+	"golang.org/x/crypto/blake2b"
+	"golang.org/x/crypto/nacl/box"
 )
 
 type PrivKey interface {
-	keys.Key
+	//crypto.Key
 
 	Sign([]byte) ([]byte, error)
-
 	GetPublic() PubKey
 }
 
 type PubKey interface {
-	keys.Key
+	//crypto.Key
 
 	Verify(data []byte, sig []byte) (bool, error)
 }
+
+func EncryptWithEd25519(pk ed25519.PublicKey, msg []byte) []byte {
+	conv := edwards25519.Ed25519PublicKeyToCurve25519(pk)
+	return Encrypt((*[32]byte)(conv), msg)
+}
+
+func DecryptWithEd25519(pub ed25519.PublicKey, priv ed25519.PrivateKey, msg []byte) []byte {
+	cPub := edwards25519.Ed25519PublicKeyToCurve25519(pub)
+	cPriv := edwards25519.Ed25519PrivateKeyToCurve25519(priv)
+	return Decrypt((*[32]byte)(cPriv), (*[32]byte)(cPub), msg)
+}
+
+func Encrypt(pubKey *[32]byte, msg []byte) []byte {
+	var nonce [24]byte
+	epk, esk, _ := box.GenerateKey(rand.Reader)
+	nonceWriter, _ := blake2b.New(24, nil)
+	nonceSlice := nonceWriter.Sum(append(epk[:], pubKey[:]...))
+	copy(nonce[:], nonceSlice)
+
+	return box.Seal(epk[:], msg, &nonce, pubKey, esk)
+}
+
+func Decrypt(privKey, pubKey *[32]byte, encrypted []byte) []byte {
+	var epk [32]byte
+	var nonce [24]byte
+	copy(epk[:], encrypted[:32])
+
+	nonceWriter, _ := blake2b.New(24, nil)
+	nonceSlice := nonceWriter.Sum(append(epk[:], pubKey[:]...))
+	copy(nonce[:], nonceSlice)
+
+	decrypted, ok := box.Open(nil, encrypted[32:], &nonce, &epk, privKey)
+	if !ok {
+		panic("Decryption error.")
+	}
+	return decrypted
+}
diff --git a/util/keys/asymmetric/signingkey/signingkey_test.go b/util/keys/asymmetric/signingkey/signingkey_test.go
new file mode 100644
index 00000000..e0a1d0ca
--- /dev/null
+++ b/util/keys/asymmetric/signingkey/signingkey_test.go
@@ -0,0 +1,16 @@
+package signingkey
+
+import (
+	"crypto/ed25519"
+	"crypto/rand"
+	"fmt"
+	"testing"
+)
+
+func Test(t *testing.T) {
+	pubKey, privKey, _ := ed25519.GenerateKey(rand.Reader)
+	msg := []byte("some stuffsafeesafujeaiofjoeai joaij fioaj iofaj oifaj foiajio fjao jo")
+	enc := EncryptWithEd25519(pubKey, msg)
+	dec := DecryptWithEd25519(pubKey, privKey, enc)
+	fmt.Println(string(enc), string(dec))
+}
diff --git a/util/keys/decode.go b/util/keys/decode.go
index c08e7c41..374241de 100644
--- a/util/keys/decode.go
+++ b/util/keys/decode.go
@@ -2,9 +2,10 @@ package keys
 
 import (
 	"encoding/base64"
+	"github.com/anytypeio/any-sync/util/crypto"
 )
 
-func EncodeKeyToString[T Key](key T) (str string, err error) {
+func EncodeKeyToString[T crypto.Key](key T) (str string, err error) {
 	raw, err := key.Raw()
 	if err != nil {
 		return
@@ -17,7 +18,7 @@ func EncodeBytesToString(bytes []byte) string {
 	return base64.StdEncoding.EncodeToString(bytes)
 }
 
-func DecodeKeyFromString[T Key](str string, construct func([]byte) (T, error), def T) (T, error) {
+func DecodeKeyFromString[T crypto.Key](str string, construct func([]byte) (T, error), def T) (T, error) {
 	dec, err := DecodeBytesFromString(str)
 	if err != nil {
 		return def, err
diff --git a/util/keys/key.go b/util/keys/key.go
deleted file mode 100644
index 150d0897..00000000
--- a/util/keys/key.go
+++ /dev/null
@@ -1,21 +0,0 @@
-package keys
-
-import "crypto/subtle"
-
-type Key interface {
-	Equals(Key) bool
-
-	Raw() ([]byte, error)
-}
-
-func KeyEquals(k1, k2 Key) bool {
-	a, err := k1.Raw()
-	if err != nil {
-		return false
-	}
-	b, err := k2.Raw()
-	if err != nil {
-		return false
-	}
-	return subtle.ConstantTimeCompare(a, b) == 1
-}