public static byte[] Blake2(FileStream fileStream, byte[] key)
{
using (var blake2 = new GenericHash.GenericHashAlgorithm(key, Constants.HashLength))
{
return(blake2.ComputeHash(fileStream));
}
}
public void ComputeHashFromBytes()
{
var expected = Utilities.HexToBinary("8866267f985204ae511980704ac85ec4936ee535c37541f342976b2cb3ac62fd");
var hashStream = new GenericHash.GenericHashAlgorithm("This is a test key", 32);
var actual = hashStream.ComputeHash(Encoding.UTF8.GetBytes("Adam Caudill"));
CollectionAssert.AreEqual(expected, actual);
}
public void ComputeHashFromNullStream()
{
var expected = Utilities.HexToBinary("4afd15412c1b940d7cffc9049b9ed413cbaeb626aca2a70c2afbeea7a85bdf8e");
var stream = Stream.Null;
var hashStream = new GenericHash.GenericHashAlgorithm("This is a test key", 32);
var actual = hashStream.ComputeHash(stream);
CollectionAssert.AreEqual(expected, actual);
}
public static byte[] Hash(byte[] payload, byte[] nonce)
{
if (nonce == null)
{
nonce = new byte[24];
using (var random = new RNGCryptoServiceProvider())
random.GetBytes(nonce);
}
var hashAlgorithm = new GenericHash.GenericHashAlgorithm(nonce, 24);
return(hashAlgorithm.ComputeHash(payload));
}
public static byte[] Hash(FileStream fileStream)
{
using var blake2 = new GenericHash.GenericHashAlgorithm(key: (byte[])null, Constants.BLAKE2Length);
return(blake2.ComputeHash(fileStream));
}