public void Crytonight_Variant_1()
{
var blobConverted = "0106a2aaafd505583cf50bcc743d04d831d2b119dc94ad88679e359076ee3f18d258ee138b3b42580100a4b1e2f4baf6ab7109071ab59bc52dba740d1de99fa0ae0c4afd6ea9f40c5d87ec01".HexToByteArray();
var buf = new byte[32];
LibCryptonight.Cryptonight(blobConverted, buf, 1);
var result = buf.ToHexString();
Assert.Equal("c41ec6434df8b2307ff3105ae15206f3fbdf5a99b35879c0a27b8b85a8e2704f", result);
Array.Clear(buf, 0, buf.Length);
LibCryptonight.Cryptonight(blobConverted, buf, 1);
result = buf.ToHexString();
Assert.Equal("c41ec6434df8b2307ff3105ae15206f3fbdf5a99b35879c0a27b8b85a8e2704f", result);
}
public void Crytonight_Variant_4()
{
var blobConverted = "0106a2aaafd505583cf50bcc743d04d831d2b119dc94ad88679e359076ee3f18d258ee138b3b42580100a4b1e2f4baf6ab7109071ab59bc52dba740d1de99fa0ae0c4afd6ea9f40c5d87ec01".HexToByteArray();
var buf = new byte[32];
LibCryptonight.Cryptonight(blobConverted, buf, CryptonightVariant.VARIANT_4, 0);
var result = buf.ToHexString();
Assert.Equal("3e69817268c70010f793d53ba1a9f12af21753c723c7d7990a8eefccc6d163ba", result);
Array.Clear(buf, 0, buf.Length);
LibCryptonight.Cryptonight(blobConverted, buf, CryptonightVariant.VARIANT_4, 0);
result = buf.ToHexString();
Assert.Equal("3e69817268c70010f793d53ba1a9f12af21753c723c7d7990a8eefccc6d163ba", result);
}
public void Crytonight()
{
var blobConverted = "0106a2aaafd505583cf50bcc743d04d831d2b119dc94ad88679e359076ee3f18d258ee138b3b42580100a4b1e2f4baf6ab7109071ab59bc52dba740d1de99fa0ae0c4afd6ea9f40c5d87ec01".HexToByteArray();
var buf = new byte[32];
LibCryptonight.Cryptonight(blobConverted, buf, 0);
var result = buf.ToHexString();
Assert.Equal("a845ffbdf83ae9a8ffa504a1011efbd5ed2294bb9da591d3b583740568402c00", result);
Array.Clear(buf, 0, buf.Length);
LibCryptonight.Cryptonight(blobConverted, buf, 0);
result = buf.ToHexString();
Assert.Equal("a845ffbdf83ae9a8ffa504a1011efbd5ed2294bb9da591d3b583740568402c00", result);
}
public (Share Share, string BlobHex, string BlobHash) ProcessShare(string nonce, uint workerExtraNonce, string workerHash, StratumClient worker)
{
Contract.Requires <ArgumentException>(!string.IsNullOrEmpty(nonce), $"{nameof(nonce)} must not be empty");
Contract.Requires <ArgumentException>(!string.IsNullOrEmpty(workerHash), $"{nameof(workerHash)} must not be empty");
Contract.Requires <ArgumentException>(workerExtraNonce != 0, $"{nameof(workerExtraNonce)} must not be empty");
var context = worker.ContextAs <MoneroWorkerContext>();
// validate nonce
if (!MoneroConstants.RegexValidNonce.IsMatch(nonce))
{
throw new StratumException(StratumError.MinusOne, "malformed nonce");
}
// clone template
Span <byte> blob = stackalloc byte[blobTemplate.Length];
blobTemplate.CopyTo(blob);
// inject extranonce
var extraNonceBytes = BitConverter.GetBytes(workerExtraNonce.ToBigEndian());
extraNonceBytes.CopyTo(blob.Slice(BlockTemplate.ReservedOffset, extraNonceBytes.Length));
// inject nonce
var nonceBytes = nonce.HexToByteArray();
nonceBytes.CopyTo(blob.Slice(MoneroConstants.BlobNonceOffset, nonceBytes.Length));
// convert
var blobConverted = LibCryptonote.ConvertBlob(blob, blobTemplate.Length);
if (blobConverted == null)
{
throw new StratumException(StratumError.MinusOne, "malformed blob");
}
// hash it
Span <byte> headerHash = stackalloc byte[32];
switch (coin)
{
case CoinType.AEON:
LibCryptonight.CryptonightLight(blobConverted, headerHash, 0);
break;
case CoinType.XMR:
var variant = blobConverted[0] >= 7 ? blobConverted[0] - 6 : 0;
LibCryptonight.Cryptonight(blobConverted, headerHash, variant);
break;
default:
LibCryptonight.Cryptonight(blobConverted, headerHash, 0);
break;
}
var headerHashString = headerHash.ToHexString();
if (headerHashString != workerHash)
{
throw new StratumException(StratumError.MinusOne, "bad hash");
}
// check difficulty
var headerValue = headerHash.ToBigInteger();
var shareDiff = (double)new BigRational(MoneroConstants.Diff1b, headerValue);
var stratumDifficulty = context.Difficulty;
var ratio = shareDiff / stratumDifficulty;
var isBlockCandidate = shareDiff >= BlockTemplate.Difficulty;
// test if share meets at least workers current difficulty
if (!isBlockCandidate && ratio < 0.99)
{
// check if share matched the previous difficulty from before a vardiff retarget
if (context.VarDiff?.LastUpdate != null && context.PreviousDifficulty.HasValue)
{
ratio = shareDiff / context.PreviousDifficulty.Value;
if (ratio < 0.99)
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
// use previous difficulty
stratumDifficulty = context.PreviousDifficulty.Value;
}
else
{
throw new StratumException(StratumError.LowDifficultyShare, $"low difficulty share ({shareDiff})");
}
}
// Compute block hash
Span <byte> blockHash = stackalloc byte[32];
ComputeBlockHash(blobConverted, blockHash);
var result = new Share
{
BlockHeight = BlockTemplate.Height,
IsBlockCandidate = isBlockCandidate,
BlockHash = blockHash.ToHexString(),
Difficulty = stratumDifficulty,
};
var blobHex = blob.ToHexString();
var blobHash = blockHash.ToHexString();
return(result, blobHex, blobHash);
}