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);
}
public void Test_AesGcmEncryptDecryptRoundTrip()
{
var key = Crypto.GenerateRandomBytes(32);
var baseText =
"0xf86d808504a817c800832dc6c0948e7b7262e0fa4616566591d51f998f16a79fb547880de0b6b3a76400008025a0115105d96a43f41a5ea562bb3e591cbfa431a8cdae9c3030457adca2cb854f78a012fb41922c53c73473563003667ed8e783359c91d95b42301e1955d530b1ca33"
.HexToBytes();
const int n = 1000;
var startTs = TimeUtils.CurrentTimeMillis();
for (var it = 0; it < n; ++it)
{
var plaintext = baseText.Concat(it.ToBytes()).ToArray();
var cipher = Crypto.AesGcmEncrypt(key, plaintext);
var decrypted = Crypto.AesGcmDecrypt(key, cipher);
Assert.IsTrue(plaintext.SequenceEqual(decrypted));
}
var endTs = TimeUtils.CurrentTimeMillis();
Console.WriteLine($"{n} encrypt/decrypt: {endTs - startTs}ms, avg = {(double) (endTs - startTs) / n}");
}
