/// <summary>
/// Derive a private key from a password using count iterations of SHA3-256
/// </summary>
/// <param name="password">The password.</param>
/// <param name="count">The count.</param>
/// <returns>System.String.</returns>
/// <exception cref="ArgumentNullException">password</exception>
/// <exception cref="ArgumentOutOfRangeException">count - must be positive</exception>
internal static string DerivePassSha(byte[] password, int count)
{
if (password == null)
{
throw new ArgumentNullException(nameof(password));
}
if (count <= 0)
{
throw new ArgumentOutOfRangeException(nameof(count), "must be positive");
}
var sha3Hasher = new KeccakDigest(256);
var hash = new byte[32];
sha3Hasher.BlockUpdate(password, 0, password.Length);
sha3Hasher.DoFinal(hash, 0);
for (var i = 0; i < count - 1; ++i)
{
sha3Hasher.Reset();
sha3Hasher.BlockUpdate(hash, 0, hash.Length);
sha3Hasher.DoFinal(hash, 0);
}
return(hash.ToHexUpper());
}
static public BigInteger Mine(string challenge, BigInteger difficulty)
{
Byte[] b = new Byte[8];
var sha3 = new KeccakDigest(512);
var rnd = new Random(0);
rnd.NextBytes(b);
b = b.Reverse().Concat(new byte[] { 0x0 }).ToArray();
var nonce = new BigInteger(b);
var challengeBI = BigInteger.Parse(challenge, NumberStyles.AllowHexSpecifier);
while (true)
{
byte[] hashb = new byte[sha3.GetDigestSize()];
byte[] value = challengeBI.ToByteArray().Reverse().Concat(nonce.ToByteArray().Reverse()).ToArray();
sha3.BlockUpdate(value, 0, value.Length);
sha3.DoFinal(hashb, 0);
hashb = hashb.Reverse().Concat(new byte[] { 0x0 }).ToArray();
var v = new BigInteger(hashb);
if (v.CompareTo(difficulty) < 0)
{
break;
}
nonce = (BigInteger.Add(nonce, BigInteger.One)) % ((new BigInteger(2)) << 64);
}
return(nonce);
}
// TODO: three arguments in place of secrets
public FrameMacProcessor(PublicKey remoteNodeId, EncryptionSecrets secrets)
{
_remoteNodeId = remoteNodeId;
_macSecret = secrets.MacSecret;
_egressMac = secrets.EgressMac;
_ingressMac = secrets.IngressMac;
}
public void KeccakDigestTest()
{
var ints = new uint[]
{
9, 96, 55, 9457, 5, 9, 5, 9, 5, 9, 5, 9
};
var bytes = Kerl.ConvertToByteArray(ints);
var sha3Digest = new KeccakDigest(Kerl.BIT_HASH_LENGTH);
sha3Digest.BlockUpdate(bytes, 0, bytes.Length);
var output = new byte[48];
var count = sha3Digest.DoFinal(output, 0);
var result = Kerl.ConvertToInt32Array(output);
Assert.AreEqual(48, count);
Assert.AreEqual(-1783424869, result[0]);
Assert.AreEqual(-1114296599, result[1]);
Assert.AreEqual(883842121, result[2]);
Assert.AreEqual(1128053166, result[3]);
Assert.AreEqual(1941138521, result[4]);
Assert.AreEqual(545983793, result[5]);
Assert.AreEqual(1613000376, result[6]);
Assert.AreEqual(1678837429, result[7]);
Assert.AreEqual(-1049582418, result[8]);
Assert.AreEqual(161709750, result[9]);
Assert.AreEqual(-308485616, result[10]);
Assert.AreEqual(-139697445, result[11]);
}
internal static byte[] DerivePassSha(string password, int count)
{
if (password == null)
{
throw new ArgumentNullException(nameof(password));
}
if (count <= 0)
{
throw new ArgumentOutOfRangeException(nameof(count), "must be positive");
}
var sha3Hasher = new KeccakDigest(256);
var priv = new byte[32];
sha3Hasher.BlockUpdate(Encoding.UTF8.GetBytes(password), 0, password.Length);
sha3Hasher.DoFinal(priv, 0);
for (var i = 0; i < count - 1; ++i)
{
sha3Hasher.Reset();
sha3Hasher.BlockUpdate(priv, 0, priv.Length);
sha3Hasher.DoFinal(priv, 0);
}
return(priv);
}
public static string PublicKeyToAddress(byte[] publicKey, int networkPrefix)
{
KeccakDigest shaDigest = new KeccakDigest(256);
byte[] bytesFirst = new byte[32];
shaDigest.BlockUpdate(publicKey, 0, 32);
shaDigest.DoFinal(bytesFirst, 0);
RipeMD160Digest digestRipeMd160 = new RipeMD160Digest();
byte[] bytesSecond = new byte[20];
digestRipeMd160.BlockUpdate(bytesFirst, 0, 32);
digestRipeMd160.DoFinal(bytesSecond, 0);
byte[] bytesThird = CryptoBytes.FromHexString(
string.Concat(networkPrefix,
CryptoBytes.ToHexStringLower(bytesSecond))
);
byte[] bytesFourth = new byte[32];
shaDigest.BlockUpdate(bytesThird, 0, 21);
shaDigest.DoFinal(bytesFourth, 0);
byte[] bytesFifth = new byte[4];
Array.Copy(bytesFourth, 0, bytesFifth, 0, 4);
byte[] bytesSixth = new byte[25];
Array.Copy(bytesThird, 0, bytesSixth, 0, 21);
Array.Copy(bytesFifth, 0, bytesSixth, 21, 4);
return(Base32.Encode(bytesSixth).ToUpper());
}
public byte[] CalculateKeccakHash(byte[] value)
{
var digest = new KeccakDigest(256);
var output = new byte[digest.GetDigestSize()];
digest.BlockUpdate(value, 0, value.Length);
digest.DoFinal(output, 0);
return output;
}
public static byte[] ComputeSha3KeccakDigest(byte[] data, int bitLength)
{
var digest = new KeccakDigest(bitLength);
byte[] buffer = new byte[digest.GetDigestSize()];
digest.BlockUpdate(data, 0, data.Length);
digest.DoFinal(buffer, 0);
return(buffer);
}
public void TestKeccak()
{
byte[] source = Encoding.ASCII.GetBytes(
"asdçflkjasçfjaçrlgjaçorigjkljbçladkfjgsaºperouiwa89tuhyjkvsldkfjçaoigfjsadfjkhsdkgjhdlkgjhdkfjbnsdflçkgsriaugfukasyfgskaruyfgsaekufygvsanfbvsdj,fhgwukaygsja,fvkusayfguwayfgsnvfuksaygfkuybhsngfukayeghsmafbsjkfgwlauifgjkshfbilçehrkluayh");
var keccak128Test = new KeccakDigest(128);
var keccak224Test = new KeccakDigest(224);
var keccak256Test = new KeccakDigest(256);
var keccak288Test = new KeccakDigest(288);
var keccak384Test = new KeccakDigest(384);
var keccak512Test = new KeccakDigest(512);
for (int i = 0; i < 10000; i++)
{
//can't find any ground truth for this one, https://8gwifi.org/MessageDigest.jsp is the only one but when comparing to other site's results for other keccaks it doesnt match up with them
/*var output1 = new byte[keccak128Test.GetDigestSize()];
* keccak128Test.BlockUpdate(source, 0, source.Length);
* keccak128Test.DoFinal(output1, 0);
* var target1 = Base16.Decode("a896124a35603f3766d9d41dade89f9b");*/
var output2 = new byte[keccak224Test.GetDigestSize()];
keccak224Test.BlockUpdate(source, 0, source.Length);
keccak224Test.DoFinal(output2, 0);
var target2 = Base16.Decode("3c8aa5706aabc26dee19b466e77f8947f801762ca64316fdf3a2434a"); //https://emn178.github.io/online-tools/keccak_224.html
var output3 = new byte[keccak256Test.GetDigestSize()];
keccak256Test.BlockUpdate(source, 0, source.Length);
keccak256Test.DoFinal(output3, 0);
var target3 = Base16.Decode("09D3FA337D33E1BEB3C3D560D93F5FB57C66BC3E044127816F42494FA4947A92"); //https://asecuritysite.com/encryption/sha3
//can't find any ground truth for this one, https://8gwifi.org/MessageDigest.jsp is the only one but when comparing to other site's results for other keccaks it doesnt match up with them
/*var output4 = new byte[keccak288Test.GetDigestSize()];
* keccak288Test.BlockUpdate(source, 0, source.Length);
* keccak288Test.DoFinal(output4, 0);
* var target4 = System.Convert.FromBase64String("");*/
var output5 = new byte[keccak384Test.GetDigestSize()];
keccak384Test.BlockUpdate(source, 0, source.Length);
keccak384Test.DoFinal(output5, 0);
var target5 = Base16.Decode("B1EA01288A8ECA553687E92943FC8E8D22B3B918462B7708FCB011B8EF28F60E7072FE2623E624DEBD00F8CF46B1F967"); //https://asecuritysite.com/encryption/sha3
var output6 = new byte[keccak512Test.GetDigestSize()];
keccak512Test.BlockUpdate(source, 0, source.Length);
keccak512Test.DoFinal(output6, 0);
var target6 = Base16.Decode("1057C35F3364A9C7D7EFB5B2AB48D9A71373DCA1E3680CBF6734DA5E896DD7DE2901A678240A1C936598A6C58E6253A9747E2715BBD559AA9A5DA9302B815BAC"); //https://asecuritysite.com/encryption/sha3
//Assert.IsTrue(output1.SequenceEqual(target1));
//Assert.IsTrue(output2.SequenceEqual(target2));
Assert.IsTrue(output3.SequenceEqual(target3));
//Assert.IsTrue(output4.SequenceEqual(target4));
Assert.IsTrue(output5.SequenceEqual(target5));
Assert.IsTrue(output6.SequenceEqual(target6));
}
}
public static byte[] HashKeccak256(byte[] src)
{
KeccakDigest sha = new KeccakDigest(256);
sha.BlockUpdate(src, 0, src.Length);
byte[] output = new byte[sha.GetDigestSize()];
sha.DoFinal(output, 0);
return(output);
}
public static byte[] ToKeccakHash(this byte[] value)
{
var digest = new KeccakDigest(256);
var output = new byte[digest.GetDigestSize()];
digest.BlockUpdate(value, 0, value.Length);
digest.DoFinal(output, 0);
return(output);
}
/// <summary>
/// Do hash
/// </summary>
/// <param name="data">Data</param>
byte[] CalculateHash(byte[] data)
{
KeccakDigest digest = new KeccakDigest(256);
byte[] raw = new byte[digest.GetDigestSize()];
digest.BlockUpdate(data, 0, data.Length);
digest.DoFinal(raw, 0);
return(raw);
}
public static byte[] SHA3(this byte[] data)
{
KeccakDigest digest = new KeccakDigest(256);
byte[] output = new byte[digest.GetDigestSize()];
digest.BlockUpdate(data, 0, data.Length);
digest.DoFinal(output, 0);
return(output);
}
public static byte[] Keccac256(byte[] data)
{
KeccakDigest k = new KeccakDigest(256);
k.BlockUpdate(data, 0, data.Length);
var hash = new byte[32];
k.DoFinal(hash, 0);
return(hash);
}
public static byte[] Hash(byte[] bytes, int bitLength)
{
var digest = new KeccakDigest(bitLength);
var output = new byte[digest.GetDigestSize()];
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(output, 0);
return(output);
}
/// <summary>
/// Keccak256 hashing algorithm
/// </summary>
/// <param name="StringIn"></param>
/// <returns></returns>
public static string Keccak256HexHashString(string StringIn)
{
var sha3 = new KeccakDigest(256);
byte[] hash = new byte[sha3.GetDigestSize()];
byte[] value = Encoding.Default.GetBytes(StringIn);
sha3.BlockUpdate(value, 0, value.Length);
sha3.DoFinal(hash, 0);
return(ToHex(hash, false));
}
/// <summary>
/// Hashes the specified payload.
/// </summary>
/// <param name="payload">The payload.</param>
/// <returns>The transaction hash.</returns>
internal static byte[] Hasher(byte[] payload)
{
var hash = new byte[32];
var sha3Hasher = new KeccakDigest(256);
sha3Hasher.BlockUpdate(payload, 0, payload.Length);
sha3Hasher.DoFinal(hash, 0);
return(hash);
}
public string CalculateHash(string value)
{
var digest = new KeccakDigest(256);
var output = new byte[digest.GetDigestSize()];
var input = Encoding.UTF8.GetBytes(value);
digest.BlockUpdate(input, 0, input.Length);
digest.DoFinal(output, 0);
return(output.ToHex());
}
private static byte[] DeriveAddress(PublicKey key)
{
byte[] hashPayload = key.Format(false).Skip(1).ToArray();
var digest = new KeccakDigest(256);
var output = new byte[digest.GetDigestSize()];
digest.BlockUpdate(hashPayload, 0, hashPayload.Length);
digest.DoFinal(output, 0);
return(output.Skip(output.Length - 20).ToArray());
}
public static byte[] Keccak256(byte[] data, int offset, int length)
{
byte[] buffer = new byte[32];
var keccakDigest = new KeccakDigest(256);
keccakDigest.BlockUpdate(data, offset, length);
keccakDigest.DoFinal(buffer, 0);
return(buffer);
}
public static byte[] Keccak256Helper(byte[] _input)
{
KeccakDigest Kec256 = new KeccakDigest(256);
Kec256.Reset();
byte[] resultHashedKec256 = new byte[32];
Kec256.BlockUpdate(_input, 0, _input.Length);
Kec256.DoFinal(resultHashedKec256, 0);
return(resultHashedKec256);
}
/// <summary>
/// Returns message hash
/// </summary>
public static byte[] Keccak256(byte[] message, int offset, int size)
{
var kecc = new KeccakDigest(256);
kecc.BlockUpdate(message, offset, size);
var output = new byte[256];
kecc.DoFinal(output, 0);
return(output);
}
protected static byte[] ComputeHash(byte[] bytes, int bits)
{
var digest = new KeccakDigest(bits);
var output = new byte[digest.GetDigestSize()];
byte[] message = bytes ?? new byte[0];
digest.BlockUpdate(message, 0, message.Length);
digest.DoFinal(output, 0);
return(output);
}
public static byte[] KeccakBytes(this IEnumerable <byte> message)
{
var bytes = message as byte[] ?? message.ToArray();
var digest = new KeccakDigest(256);
digest.BlockUpdate(bytes, 0, bytes.Length);
var output = new byte[32];
digest.DoFinal(output, 0);
return(output);
}
private void SetSecrets(EncryptionHandshake handshake, HandshakeRole handshakeRole)
{
byte[] ephemeralSharedSecret = Proxy.EcdhSerialized(handshake.RemoteEphemeralPublicKey.Bytes, handshake.EphemeralPrivateKey.KeyBytes);
byte[] nonceHash = Keccak.Compute(Bytes.Concat(handshake.RecipientNonce, handshake.InitiatorNonce)).Bytes;
byte[] sharedSecret = Keccak.Compute(Bytes.Concat(ephemeralSharedSecret, nonceHash)).Bytes;
byte[] token = Keccak.Compute(sharedSecret).Bytes;
byte[] aesSecret = Keccak.Compute(Bytes.Concat(ephemeralSharedSecret, sharedSecret)).Bytes;
Array.Clear(sharedSecret, 0, sharedSecret.Length); // TODO: it was passed in the concat for Keccak so not good enough
byte[] macSecret = Keccak.Compute(Bytes.Concat(ephemeralSharedSecret, aesSecret)).Bytes;
Array.Clear(ephemeralSharedSecret, 0, ephemeralSharedSecret.Length); // TODO: it was passed in the concat for Keccak so not good enough
handshake.Secrets = new EncryptionSecrets();
handshake.Secrets.Token = token;
handshake.Secrets.AesSecret = aesSecret;
handshake.Secrets.MacSecret = macSecret;
KeccakDigest mac1 = new KeccakDigest(MacBitsSize);
mac1.BlockUpdate(macSecret.Xor(handshake.RecipientNonce), 0, macSecret.Length);
mac1.BlockUpdate(handshake.AuthPacket.Data, 0, handshake.AuthPacket.Data.Length);
KeccakDigest mac2 = new KeccakDigest(MacBitsSize);
mac2.BlockUpdate(macSecret.Xor(handshake.InitiatorNonce), 0, macSecret.Length);
mac2.BlockUpdate(handshake.AckPacket.Data, 0, handshake.AckPacket.Data.Length);
if (handshakeRole == HandshakeRole.Initiator)
{
handshake.Secrets.EgressMac = mac1;
handshake.Secrets.IngressMac = mac2;
}
else
{
handshake.Secrets.EgressMac = mac2;
handshake.Secrets.IngressMac = mac1;
}
if (_logger.IsTrace)
{
_logger.Trace($"Agreed secrets with {handshake.RemoteNodeId}");
}
#if DEBUG
if (_logger.IsTrace)
{
_logger.Trace($"{handshake.RemoteNodeId} ephemeral private key {handshake.EphemeralPrivateKey}");
_logger.Trace($"{handshake.RemoteNodeId} initiator nonce {handshake.InitiatorNonce.ToHexString()}");
_logger.Trace($"{handshake.RemoteNodeId} recipient nonce {handshake.RecipientNonce.ToHexString()}");
_logger.Trace($"{handshake.RemoteNodeId} remote ephemeral public key {handshake.RemoteEphemeralPublicKey}");
_logger.Trace($"{handshake.RemoteNodeId} remote public key {handshake.RemoteNodeId}");
_logger.Trace($"{handshake.RemoteNodeId} auth packet {handshake.AuthPacket.Data.ToHexString()}");
_logger.Trace($"{handshake.RemoteNodeId} ack packet {handshake.AckPacket.Data.ToHexString()}");
}
#endif
}
/// <summary>
/// Gets the SHA3 digest from the specified data.
/// </summary>
/// <param name="data">The data.</param>
/// <returns>The digest string.</returns>
public static string GetSha3(MemoryStream data)
{
var digest = new KeccakDigest();
digest.BlockUpdate(data.ToArray(), 0, (int)data.Length);
var result = new byte[digest.GetDigestSize()];
digest.DoFinal(result, 0);
return(BitConverter.ToString(result).Replace("-", ""));
}
/// <summary>
/// Produces a <see cref="PrivateKeyAccountClient"/> from a given <see cref="SecureString"/> of any size.
/// </summary>
/// <remarks>
/// Takes a SecureString, hashes with Sha3 and converts the produced bytes to a 64 char hex string. The <see cref="StringUtils"/> class contains methods to convert to or from <see cref="SecureString"/>.
/// </remarks>
/// <param name="data">The data to convert to a private key.</param>
/// <returns>A <see cref="PrivateKeyAccountClient"/> that can be used to initiate transactions.</returns>
public PrivateKeyAccountClient FromNewDataPrivateKey(SecureString data)
{
var digestSha3 = new KeccakDigest(256);
var dataBytes = Encoding.Default.GetBytes(StringUtils.ConvertToUnsecureString(data));
var pkBytes = new byte[32];
digestSha3.BlockUpdate(dataBytes, 0, 32);
digestSha3.DoFinal(pkBytes, 0);
var sk = StringUtils.ToSecureString(CryptoBytes.ToHexStringLower(pkBytes));
return(FromPrivateKey(new PrivateKey(sk)));
}
private byte[] CalculateHash(byte[] data)
{
var cloner = new byte[data.Length];
Array.Copy(data, cloner, data.Length);
var hasher = new KeccakDigest(256);
hasher.BlockUpdate(cloner, 0, cloner.Length);
var output = new byte[hasher.GetDigestSize()];
hasher.DoFinal(output, 0);
return(output);
}
public FrameMacProcessor(PublicKey remoteNodeId, EncryptionSecrets secrets)
{
_remoteNodeId = remoteNodeId;
_macSecret = secrets.MacSecret;
_egressMac = secrets.EgressMac;
_egressMacCopy = (KeccakDigest)_egressMac.Copy();
_ingressMac = secrets.IngressMac;
_ingressMacCopy = (KeccakDigest)_ingressMac.Copy();
_aesEngine = MakeMacCipher();
_checkMacBuffer = new byte[_ingressMac.GetDigestSize()];
_addMacBuffer = new byte[_ingressMac.GetDigestSize()];
_ingressAesBlockBuffer = new byte[_ingressMac.GetDigestSize()];
_egressAesBlockBuffer = new byte[_ingressMac.GetDigestSize()];
}
public static byte[] Sha3(this byte[] value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
var digest = new KeccakDigest(256);
var output = new byte[digest.GetDigestSize()];
digest.BlockUpdate(value, 0, value.Length);
digest.DoFinal(output, 0);
return(output);
}
