public void DoTestDigestWithKeyedTestVectors()
{
Blake2sDigest digest = new Blake2sDigest(Hex.Decode(keyedTestVectors[0, 1]));
for (int i = 0; i != keyedTestVectors.GetLength(0); i++)
{
byte[] input = Hex.Decode(keyedTestVectors[i, 0]);
digest.Reset();
digest.BlockUpdate(input, 0, input.Length);
byte[] hash = new byte[32];
digest.DoFinal(hash, 0);
if (!AreEqual(Hex.Decode(keyedTestVectors[i, 2]), hash))
{
Fail("BLAKE2s mismatch on test vector ", keyedTestVectors[i, 2], Hex.ToHexString(hash));
}
}
}
public void DoTestDigestWithKeyedTestVectorsAndRandomUpdate()
{
Blake2sDigest digest = new Blake2sDigest(Hex.Decode(
keyedTestVectors[0][1]));
Random random = new Random();
for (int i = 0; i < 100; i++)
{
for (int j = 0; j != keyedTestVectors.Length; j++)
{
String[] keyedTestVector = keyedTestVectors[j];
byte[] input = Hex.Decode(keyedTestVector[0]);
if (input.Length < 3)
{
continue;
}
digest.Reset();
int pos = (random.Next() & 0xffff) % input.Length;
if (pos > 0)
{
digest.BlockUpdate(input, 0, pos);
}
digest.Update(input[pos]);
if (pos < (input.Length - 1))
{
digest.BlockUpdate(input, pos + 1, input.Length - (pos + 1));
}
byte[] hash = new byte[32];
digest.DoFinal(hash, 0);
if (!AreEqual(Hex.Decode(keyedTestVector[2]), hash))
{
Fail("BLAKE2s mismatch on test vector ",
keyedTestVector[2],
Hex.ToHexString(hash));
}
}
}
}
public void DoTestReset()
{
// Generate a non-zero key
byte[] key = new byte[32];
for (byte i = 0; i < key.Length; i++)
{
key[i] = i;
}
// Generate some non-zero input longer than the key
byte[] input = new byte[key.Length + 1];
for (byte i = 0; i < input.Length; i++)
{
input[i] = i;
}
// Hash the input
Blake2sDigest digest = new Blake2sDigest(key);
digest.BlockUpdate(input, 0, input.Length);
byte[] hash = new byte[digest.GetDigestSize()];
digest.DoFinal(hash, 0);
// Create a second instance, hash the input without calling doFinal()
Blake2sDigest digest1 = new Blake2sDigest(key);
digest1.BlockUpdate(input, 0, input.Length);
// Reset the second instance and hash the input again
digest1.Reset();
digest1.BlockUpdate(input, 0, input.Length);
byte[] hash1 = new byte[digest.GetDigestSize()];
digest1.DoFinal(hash1, 0);
// The hashes should be identical
if (!AreEqual(hash, hash1))
{
Fail("BLAKE2s mismatch on test vector ",
Hex.ToHexString(hash),
Hex.ToHexString(hash1));
}
}
