private bool RestoreWallet(string path, string password, out EcdsaKeyPair keyPair, out byte[] hubKey) { var encryptedContent = File.ReadAllBytes(path); var key = Encoding.UTF8.GetBytes(password).KeccakBytes(); var decryptedContent = Encoding.UTF8.GetString(Crypto.AesGcmDecrypt(key, encryptedContent)); var wallet = JsonConvert.DeserializeObject <JsonWallet>(decryptedContent); if (wallet.EcdsaPrivateKey is null) { throw new Exception("Decrypted wallet does not contain ECDSA key"); } var needsSave = false; if (wallet.HubPrivateKey is null) { wallet.HubPrivateKey = GenerateHubKey().PrivateKey; needsSave = true; } wallet.ThresholdSignatureKeys ??= new Dictionary <ulong, string>(); wallet.TpkePrivateKeys ??= new Dictionary <ulong, string>(); keyPair = new EcdsaKeyPair(wallet.EcdsaPrivateKey.HexToBytes().ToPrivateKey()); hubKey = wallet.HubPrivateKey.HexToBytes(); _tpkeKeys.AddAll(wallet.TpkePrivateKeys .Select(p => new C5.KeyValuePair <ulong, PrivateKey>(p.Key, PrivateKey.FromBytes(p.Value.HexToBytes())))); _tsKeys.AddAll(wallet.ThresholdSignatureKeys .Select(p => new C5.KeyValuePair <ulong, PrivateKeyShare>(p.Key, PrivateKeyShare.FromBytes(p.Value.HexToBytes())))); return(needsSave); }