/// <summary>
/// Compares plain text input with a computed hash using the configured <c>HashAlgorithm</c>.
/// <seealso cref="IHashProvider.CompareHash"/>
/// </summary>
/// <param name="plaintext"><seealso cref="IHashProvider.CompareHash"/></param>
/// <param name="hashedtext"><seealso cref="IHashProvider.CompareHash"/></param>
/// <returns><seealso cref="IHashProvider.CompareHash"/></returns>
public bool CompareHash(byte[] plaintext, byte[] hashedtext)
{
ArgumentValidation.CheckForNullReference(plaintext, "plainText");
ArgumentValidation.CheckForNullReference(hashedtext, "hashedText");
ArgumentValidation.CheckForZeroBytes(hashedtext, "hashedText");
bool result = false;
byte[] hashedPlainText = null;
byte[] salt = null;
try
{
salt = ExtractSalt(hashedtext);
hashedPlainText = CreateHashWithSalt(plaintext, salt);
}
finally
{
CryptographyUtility.ZeroOutBytes(salt);
}
result = CryptographyUtility.CompareBytes(hashedPlainText, hashedtext);
SecurityCryptoHashCheckEvent.Fire(string.Empty);
if (!result)
{
SecurityCryptoHashCheckFailureEvent.Fire(string.Empty);
}
return(result);
}
private void FireSecurityCryptoHashCheckEvent()
{
SecurityCryptoHashCheckEvent.Fire(testMessage);
}
private void FireSecurityCryptoHashCheckEvent()
{
SecurityCryptoHashCheckEvent.Fire("test");
}