/// <summary>
/// Hashes the specified payload.
/// </summary>
/// <param name="payload">The payload.</param>
/// <param name="size">The size.</param>
/// <returns>System.Byte[].</returns>
public byte[] Hash(byte[] payload, int size)
{
var nKey = new byte[size];
//using (var random = new RNGCryptoServiceProvider())
// random.GetBytes(nKey);
RandomNumberGenerator.Create().GetBytes(nKey);
// Using Paseto Cryptography library
using (var hash = new Blake2B())
return(hash.ComputeHash(nKey));
/*
* Using NSec library
*
* var algo = new Blake2bMac();
* using (var key = Key.Import(algo, nKey, KeyBlobFormat.RawSymmetricKey))
* return algo.Mac(key, payload, size);
*/
// Using Sodium Core library
//var hash = new GenericHash.GenericHashAlgorithm(nKey, size);
//return hash.ComputeHash(GetBytes(payload));
}
/*
* bool Proof::Test()
* {
* uint32_t input[SEED_LENGTH + 2];
* for (unsigned i = 0; i < SEED_LENGTH; ++i)
* input[i] = seed[i];
* input[SEED_LENGTH] = nonce;
* input[SEED_LENGTH + 1] = 0;
* uint32_t buf[MAX_N / 4];
* std::vector<uint32_t> blocks(k + 1, 0);
* for (unsigned i = 0; i < inputs.size(); ++i)
* {
* input[SEED_LENGTH + 1] = inputs[i];
* blake2b((uint8_t*)buf, &input, NULL, sizeof(buf), sizeof(input), 0);
* for (unsigned j = 0; j < (k + 1); ++j)
* {
* //select j-th block of n/(k+1) bits
* blocks[j] ^= buf[j] >> (32 - n / (k + 1));
* }
* }
* bool b = true;
* for (unsigned j = 0; j < (k + 1); ++j)
* {
* b &= (blocks[j] == 0);
* }
* if (b && inputs.size() != 0)
* {
* printf("Solution found:\n");
* for (unsigned i = 0; i < inputs.size(); ++i)
* {
* printf(" %x ", inputs[i]);
* }
* printf("\n");
* }
* return b;
* }
*/
public bool Test()
{
uint[] input = new uint[Equihash.SEED_LENGTH + 2];
for (uint i = 0; i < Equihash.SEED_LENGTH; ++i)
{
input[i] = seed[i];
}
input[Equihash.SEED_LENGTH] = nonce;
input[Equihash.SEED_LENGTH + 1] = 0;
uint[] buf = new uint[Equihash.MAX_N / 4];
List <uint> blocks = new List <uint>(); for (int i = 0; i < k + 1; i++)
{
blocks.Add(0);
}
for (int i = 0; i < inputs.Count; ++i)
{
input[Equihash.SEED_LENGTH + 1] = inputs[i];
byte[] inputBytes;
using (MemoryStream ms = new MemoryStream())
{
for (int x = 0; x < input.Length; x++)
{
ms.Write(BitConverter.GetBytes(input[x]), 0, 4);
}
inputBytes = ms.ToArray();
}
Blake2B blake2b = new Blake2B(256);
byte[] result = blake2b.ComputeHash(inputBytes);
for (int x = 0; x < buf.Length; x++)
{
buf[x] = BitConverter.ToUInt32(result, x * 4);
}
for (int j = 0; j < (k + 1); ++j)
{
//select j-th block of n/(k+1) bits
blocks[j] = blocks[j] ^ (buf[j] >> (int)(32 - n / (k + 1)));
}
}
bool b = true;
for (int j = 0; j < (k + 1); ++j)
{
b = (blocks[j] == 0);
}
if (b && inputs.Count != 0)
{
Console.WriteLine("Solution found:");
for (int i = 0; i < inputs.Count; ++i)
{
Console.Write($" {inputs[i]} ");
}
Console.WriteLine("");
}
return(b);
}
/// <summary>Blake2 hashed the specified bytes.</summary>
/// <param name="bytes">The bytes.</param>
/// <param name="size">The size.</param>
/// <param name="key">The key.</param>
/// <returns>
/// <br />
/// </returns>
public static byte[] Blake2(byte[] bytes, int size = 128, IReadOnlyList <byte> key = null)
{
var config = new Blake2BConfig {
OutputSizeInBits = size, Key = null
};
return(Blake2B.ComputeHash(bytes, config));
}
public string CalculateMessageNetworkId()
{
var networkIdBytes = Blake2B.ComputeHash(Encoding.ASCII.GetBytes(this.NetworkId), new Blake2BConfig {
OutputSizeInBytes = 32
}, null);
return(BitConverter.ToInt64(networkIdBytes.Take(8).ToArray(), 0).ToString());
}
/// <summary>Blake2 hashed with bytes concated at the end.</summary>
/// <param name="bytes">The bytes.</param>
/// <param name="size">The size.</param>
/// <returns>
/// <br />
/// </returns>
public static byte[] Blake2Concat(byte[] bytes, int size = 128)
{
var config = new Blake2BConfig {
OutputSizeInBits = size, Key = null
};
return(Blake2B.ComputeHash(bytes, config).Concat(bytes).ToArray());
}
public byte[] Blake2b(byte[] input)
{
var blakeConfig = new Blake2BConfig {
OutputSizeInBits = 256
};
return(Blake2B.ComputeHash(input, 0, input.Count(), blakeConfig));
}
public static byte[] FastHash(byte[] message, int offset, int length)
{
var blakeConfig = new Blake2BConfig {
OutputSizeInBits = 256
};
return(Blake2B.ComputeHash(message, offset, length, blakeConfig));
}
public static byte[] SecureHash(byte[] message, int offset, int lenght)
{
var blakeConfig = new Blake2BConfig {
OutputSizeInBits = 256
};
var blake2B = Blake2B.ComputeHash(message, offset, lenght, blakeConfig);
return(Hash(blake2B, 0, blake2B.Length, Keccak256));
}
private static byte[] CalculateBlake2StrongSum(byte[] block)
{
//IL_0001: Unknown result type (might be due to invalid IL or missing references)
//IL_0006: Unknown result type (might be due to invalid IL or missing references)
//IL_0013: Expected O, but got Unknown
Blake2BConfig val = new Blake2BConfig();
val.set_OutputSizeInBytes(32);
return(Blake2B.ComputeHash(block, val));
}
// Generate blake2b nonce with clientkey(pk) and serverkey.
private static byte[] GenerateBlake2BNonce(byte[] clientKey, byte[] serverKey)
{
var hashBuffer = new byte[clientKey.Length + serverKey.Length];
Buffer.BlockCopy(clientKey, 0, hashBuffer, 0, clientKey.Length);
Buffer.BlockCopy(serverKey, 0, hashBuffer, PublicKeyBox.PublicKeyLength, serverKey.Length);
using (var blake = new Blake2B(24))
return(blake.ComputeHash(hashBuffer));
}
static readonly byte[] personalization = new byte[] { 99, 107, 98, 45, 100, 101, 102, 97, 117, 108, 116, 45, 104, 97, 115, 104 }; // ckb-default-hash
public static byte[] ComputeHash(byte[] data)
{
Blake2BConfig config = new Blake2BConfig
{
Personalization = personalization,
OutputSizeInBytes = 32
};
SecureArrayCall secureArrayCall = default;
return(Blake2B.ComputeHash(data, config, secureArrayCall));
}
/// <inheritdoc />
public long DoPow(byte[] message, int targetScore)
{
var relevantMessagePart = message.Take(message.Length - 8).ToArray();
var digest = Blake2B.ComputeHash(relevantMessagePart, new Blake2BConfig {
OutputSizeInBytes = 32
}, null);
var targetZeros = (int)Math.Ceiling(Math.Log((relevantMessagePart.Length + 8) * targetScore) / this.LN3);
return(this.DoWork(digest, targetZeros));
}
/// <summary>
/// get the Blake2b-512 encrypt
/// </summary>
/// <param name="byteArrayToEncrypt">Byte array to encrypt</param>
/// <returns></returns>
public static string Blake2b_512Hash(this byte[] byteArrayToEncrypt)
{
StringBuilder sBuilder = new StringBuilder();
foreach (var encryptedByte in Blake2B.ComputeHash(byteArrayToEncrypt))
{
sBuilder.Append(encryptedByte.ToString("x2"));
}
return(sBuilder.ToString());
}
public void CheckTestVectors()
{
for (int len = 0; len < TestVectors.UnkeyedBlake2B.Length; len++)
{
var input = Enumerable.Range(0, len).Select(i => (byte)i).ToArray();
var hash = Blake2B.ComputeHash(input);
string actual = BitConverter.ToString(hash).Replace("-", "");
string expected = TestVectors.UnkeyedBlake2B[len];
Assert.AreEqual(expected, actual);
}
}
public static Ed25519Address FromPublicKey(byte[] publicKey)
{
var addressHash = Blake2B.ComputeHash(publicKey, new Blake2BConfig {
OutputSizeInBytes = 32
}, null);
return(new Ed25519Address
{
Address = addressHash.ToHex(),
PublicKey = publicKey
});
}
public static string getBlake2b(string text)
{
byte[] bytes = Encoding.UTF8.GetBytes(text);
Blake2B hashstring = new Blake2B();
byte[] hash = hashstring.ComputeHash(bytes);
string hashString = string.Empty;
foreach (byte x in hash)
{
hashString += String.Format("{0:x2}", x);
}
return(hashString);
}
private void SignTransfer()
{
IsBusy = true;
try
{
if (!App.IsPolkadotApiConnected)
{
App.ConnectToNode();
}
_ = Task.Run(async() =>
{
try
{
var sender = new Address("5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY");
//var pub = AddressUtils.GetPublicKeyFromAddr(sender);
var secret = "0x33A6F3093F158A7109F679410BEF1A0C54168145E0CECB4DF006C1C2FFFB1F09925A225D97AA00682D6A59B95B18780C10D7032336E88F3442B42361F4A66011";
var recipient = "5Ef1wcrhb5CVyZjpdYh9Keg81tgUPcsYi9uhNHC9uqjo7956";
var amount = BigInteger.Parse("10");
var tmp = Blake2B.ComputeHash(secret.HexToByteArray());
var tcs = new TaskCompletionSource <string>();
var sid = PolkadotApi.SignAndSendTransfer(sender.Symbols, secret, recipient, amount, res => tcs.SetResult(res));
Trace.WriteLine(sid);
var result = await tcs.Task.WithTimeout(TimeSpan.FromSeconds(30));
PolkadotApi.UnsubscribeStorage(sid);
Trace.WriteLine(result);
}
catch (Exception ex)
{
Trace.WriteLine(ex);
}
});
}
catch (System.Exception ex)
{
Trace.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
/// <summary>
/// Does a Blake2 hash with the ability to truncate or extend the hash to any length.
/// </summary>
/// <param name="hash">
/// The buffer to fill with the hash.
/// </param>
/// <param name="inputBuffer">
/// What to hash.
/// </param>
/// <param name="secureArrayCall">
/// The methods that get called to secure arrays. A null value defaults to <see cref="SecureArray"/>.<see cref="SecureArray.DefaultCall"/>.
/// </param>
private static void Blake2BLong(byte[] hash, byte[] inputBuffer, SecureArrayCall secureArrayCall)
{
var outputLengthBytes = new byte[4];
using var intermediateHash = SecureArray <byte> .Best(Blake2B.OutputLength, secureArrayCall);
var config = new Blake2BConfig
{
Result64ByteBuffer = intermediateHash.Buffer,
OutputSizeInBytes = hash.Length > 64 ? 64 : hash.Length,
};
Store32(outputLengthBytes, hash.Length);
using (var blakeHash = Blake2B.Create(config, secureArrayCall))
{
blakeHash.Update(outputLengthBytes);
blakeHash.Update(inputBuffer);
blakeHash.Finish();
}
if (hash.Length <= intermediateHash.Buffer.Length)
{
Array.Copy(intermediateHash.Buffer, hash, hash.Length);
return;
}
const int b2B2 = Blake2B.OutputLength / 2;
Array.Copy(intermediateHash.Buffer, hash, b2B2);
int pos = b2B2;
int lastHashIndex = hash.Length - Blake2B.OutputLength;
var toHash = new byte[Blake2B.OutputLength];
while (pos < lastHashIndex)
{
Array.Copy(intermediateHash.Buffer, toHash, intermediateHash.Buffer.Length);
Blake2B.ComputeHash(toHash, config, secureArrayCall);
Array.Copy(intermediateHash.Buffer, 0, hash, pos, b2B2);
pos += b2B2;
}
Array.Copy(intermediateHash.Buffer, toHash, intermediateHash.Buffer.Length);
Blake2B.ComputeHash(toHash, config, secureArrayCall);
Array.Copy(intermediateHash.Buffer, 0, hash, pos, hash.Length - pos);
}
/*
* void Equihash::FillMemory(uint32_t length) //works for k<=7
* {
* uint32_t input[SEED_LENGTH + 2];
* for (unsigned i = 0; i < SEED_LENGTH; ++i)
* input[i] = seed[i];
* input[SEED_LENGTH] = nonce;
* input[SEED_LENGTH + 1] = 0;
* uint32_t buf[MAX_N / 4];
* for (unsigned i = 0; i < length; ++i, ++input[SEED_LENGTH + 1]) {
* blake2b((uint8_t*)buf, &input, NULL, sizeof(buf), sizeof(input), 0);
* uint32_t index = buf[0] >> (32 - n / (k + 1));
* unsigned count = filledList[index];
* if (count < LIST_LENGTH) {
* for (unsigned j = 1; j < (k + 1); ++j) {
* //select j-th block of n/(k+1) bits
* tupleList[index][count].blocks[j - 1] = buf[j] >> (32 - n / (k + 1));
* }
* tupleList[index][count].reference = i;
* filledList[index]++;
* }
* }
* }
*/
public void FillMemory(ulong length) //works for k<=7
{
uint[] input = new uint[Equihash.SEED_LENGTH + 2];
for (uint i = 0; i < SEED_LENGTH; ++i)
{
input[i] = seed[i];
}
input[SEED_LENGTH] = nonce;
input[SEED_LENGTH + 1] = 0;
uint[] buf = new uint[Equihash.MAX_N / 4];
for (uint i = 0; i < length; ++i, ++input[SEED_LENGTH + 1])
{
byte[] inputBytes;
using (MemoryStream ms = new MemoryStream())
{
for (int x = 0; x < input.Length; x++)
{
ms.Write(BitConverter.GetBytes(input[x]), 0, 4);
}
inputBytes = ms.ToArray();
}
Blake2B blake2b = new Blake2B(256);
byte[] result = blake2b.ComputeHash(inputBytes);
for (int x = 0; x < buf.Length; x++)
{
buf[x] = BitConverter.ToUInt32(result, x * 4);
}
uint index = buf[0] >> (int)(32 - n / (k + 1));
uint count = filledList[index];
if (count < LIST_LENGTH)
{
for (uint j = 1; j < (k + 1); ++j)
{
//select j-th block of n/(k+1) bits
tupleList[index, count, j - 1] = buf[j] >> (int)(32 - n / (k + 1));
}
tupleList[index, count, REFERENCE_BLOCK_INDEX] = i;
filledList[index]++;
}
}
}
public static string GetHashStringBlacke2b(this string clearstring)
{
return(Convert.ToBase64String(Blake2B.ComputeHash(Blake2B.ComputeHash(Encoding.UTF8.GetBytes(clearstring)))));
}
public byte[] CalculateHash()
{
return(Blake2B.ComputeHash(this.Serialize(), new Blake2BConfig {
OutputSizeInBytes = 32
}, null));
}
public static string ApplyBlacke2(this string data)
{
var p = Blake2B.ComputeHash(System.Text.Encoding.UTF8.GetBytes(data));
return(Convert.ToBase64String(p));
}
/// <summary>Blake2 hashed the specified ss prefixed.</summary>
/// <param name="ssPrefixed">The ss prefixed.</param>
/// <param name="start">The start.</param>
/// <param name="count">The count.</param>
/// <returns>
/// <br />
/// </returns>
internal static byte[] Blake2(byte[] ssPrefixed, int start, int count)
{
return(Blake2B.ComputeHash(ssPrefixed, start, count));
}
private static string Blake2b(string data)
{
return(Convert.ToBase64String(Blake2B.ComputeHash(Encoding.UTF8.GetBytes(data))));
}
