public void VerifyHMAC(MessageDigest digest, string[] results)
{
byte[] hash = HMAC.Digest(digest, key, small_data);
string str = BitConverter.ToString(hash);
if (str != results[0])
{
Console.WriteLine("{0} - Failed to calculate hash on {1}", digest.Name, small_data);
Console.WriteLine("got {0} instead of {1}", str, results[0]);
}
else
{
Console.WriteLine("{0} - Test 1 passed.", digest.Name);
}
// Compute the large hash
using (HMAC hmac = new HMAC())
{
byte[] buf = Encoding.ASCII.GetBytes(new string('a', 1000));
hmac.Init(key, digest);
for (int i = 0; i < 1000; i++)
{
hmac.Update(buf);
}
hash = hmac.DigestFinal();
// Check for error
str = BitConverter.ToString(hash);
if (str != results[1])
{
Console.WriteLine("{0} - Failed to calculate hash on a*1000", digest.Name);
Console.WriteLine("got {0} instead of {1}", str, results[1]);
}
else
{
Console.WriteLine("{0} - Test 2 passed.", digest.Name);
}
}
}