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);
}
/// <summary>
/// Remove PKCS#7 padding. This changes the array's length.
/// </summary>
public static byte[] UnPkcs7(byte[] raw)
{
int paddingLength = GetPkcs7Length(raw);
return(ByteArrayHelpers.CopyPartOf(raw, 0, raw.Length - paddingLength));
}