diff --git a/crypto/pb/forward.go b/crypto/pb/forward.go
new file mode 100644
index 0000000..b439371
--- /dev/null
+++ b/crypto/pb/forward.go
@@ -0,0 +1,38 @@
+package crypto_pb
+
+import pb "github.com/libp2p/go-libp2p/core/crypto/pb"
+
+var (
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.ErrInvalidLengthCrypto instead
+	ErrInvalidLengthCrypto = pb.ErrInvalidLengthCrypto
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.ErrIntOverflowCrypto instead
+	ErrIntOverflowCrypto = pb.ErrIntOverflowCrypto
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.ErrUnexpectedEndOfGroupCrypto instead
+	ErrUnexpectedEndOfGroupCrypto = pb.ErrUnexpectedEndOfGroupCrypto
+
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.KeyType_name instead
+	KeyType_name = pb.KeyType_name
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.KeyType_value instead
+	KeyType_value = pb.KeyType_value
+)
+
+// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.KeyType instead
+type KeyType = pb.KeyType
+
+const (
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.KeyType_RSA instead
+	KeyType_RSA pb.KeyType = pb.KeyType_RSA
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.KeyType_Ed25519 instead
+	KeyType_Ed25519 pb.KeyType = pb.KeyType_Ed25519
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.KeyType_Secp256k1 instead
+	KeyType_Secp256k1 pb.KeyType = pb.KeyType_Secp256k1
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.KeyType_ECDSA instead
+	KeyType_ECDSA pb.KeyType = pb.KeyType_ECDSA
+)
+
+type (
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.PrivateKey instead
+	PrivateKey = pb.PrivateKey
+	// DEPRECATED use github.com/libp2p/go-libp2p/core/crypto/pb.PublicKey instead
+	PublicKey = pb.PublicKey
+)