private void SHA1_TestRepetitionVector(char input, int repetition, string expected = null)
{
// Arrange
var shaHasher1 = new AdapterUtilities.TestIdProvider.Sha1Implementation();
var shaHasher2 = new AdapterUtilities.TestIdProvider.Sha1Implementation();
var bytes = new byte[repetition];
for (int i = 0; i < repetition; i++)
{
bytes[i] = (byte)input;
}
if (string.IsNullOrEmpty(expected))
{
using (var hasher = System.Security.Cryptography.SHA1.Create())
{
expected = ToHex(hasher.ComputeHash(bytes));
}
}
else
{
expected = expected.Replace(" ", "").ToLowerInvariant();
}
// Act
var digest1 = ToHex(shaHasher1.ComputeHash(bytes));
var blocks = bytes.Length / AdapterUtilities.TestIdProvider.BlockBytes;
byte[] block;
for (var i = 0; i < blocks; i += 1)
{
block = new byte[AdapterUtilities.TestIdProvider.BlockBytes];
Buffer.BlockCopy(bytes, i * block.Length, block, 0, block.Length);
shaHasher2.ProcessBlock(block, 0, block.Length);
}
var rest = bytes.Length - blocks * AdapterUtilities.TestIdProvider.BlockBytes;
if (rest != 0)
{
block = new byte[rest];
Buffer.BlockCopy(bytes, blocks * block.Length, block, 0, block.Length);
shaHasher2.PadMessage(ref block, block.Length);
shaHasher2.ProcessBlock(block, 0, block.Length);
}
var digest2 = ToHex(shaHasher2.ProcessFinalBlock());
// Assert
Assert.AreEqual(expected, digest1, $"Test vector '{input}'*{repetition} failed! (normal path)");
Assert.AreEqual(expected, digest2, $"Test vector '{input}'*{repetition} failed! (padding path)");
}
private void SHA1_TestVector(string message, string expected)
{
// Arrange
expected = expected.Replace(" ", "").ToLowerInvariant();
var shaHasher1 = new AdapterUtilities.TestIdProvider.Sha1Implementation();
// Act
var bytes = UTF8Encoding.UTF8.GetBytes(message);
var digest1 = ToHex(shaHasher1.ComputeHash(bytes));
// Assert
Assert.AreEqual(expected, digest1, $"Test vector '{message}' failed!");
}