private static uint[] GetWords(byte[] chunk)
{
var words = new uint[80];
for (int i = 0; i < 16; i++)
{
words[i] = ConversionHelpers.ToUInt(ByteArrayHelpers.CopyPartOf(chunk, i * 4, 4).Reverse().ToArray());
}
for (int i = 16; i < 80; i++)
{
words[i] = MiscHelpers.LeftRotate(words[i - 3] ^ words[i - 8] ^ words[i - 14] ^ words[i - 16], 1);
}
return(words);
}
private static uint[] ProcessChunks(uint[] chunkHash, uint[] words)
{
for (int i = 0; i < words.Length; i++)
{
uint f, k;
if (i < 20)
{
f = (chunkHash[1] & chunkHash[2]) | (~chunkHash[1] & chunkHash[3]);
k = 0x5A827999;
}
else if (i < 40)
{
f = chunkHash[1] ^ chunkHash[2] ^ chunkHash[3];
k = 0x6ED9EBA1;
}
else if (i < 60)
{
f = (chunkHash[1] & chunkHash[2]) | (chunkHash[1] & chunkHash[3]) | (chunkHash[2] & chunkHash[3]);
k = 0x8F1BBCDC;
}
else
{
f = chunkHash[1] ^ chunkHash[2] ^ chunkHash[3];
k = 0xCA62C1D6;
}
uint temp = MiscHelpers.LeftRotate(chunkHash[0], 5) + f + chunkHash[4] + k + words[i];
chunkHash[4] = chunkHash[3];
chunkHash[3] = chunkHash[2];
chunkHash[2] = MiscHelpers.LeftRotate(chunkHash[1], 30);
chunkHash[1] = chunkHash[0];
chunkHash[0] = temp;
}
return(chunkHash);
}
