/**
* Verifies a signature for any data previously added via {@link #update(byte[])}.
* @param sig a signature
* @return whether the signature is valid
* @throws NtruException if <code>initVerify</code> was not called
*/
public bool verify(byte[] sig)
{
if (hashAlg == null || verificationKey == null)
{
throw new NtruException("Call initVerify first!");
}
byte[] msgHash = new byte[hashAlg.DigestSize];
hashAlg.DoFinal(msgHash, 0);
return(verifyHash(msgHash, sig, verificationKey));
}
public void Example_ComputeHash()
{
byte[] first = Encoding.ASCII.GetBytes("Hello ");
byte[] second = Encoding.ASCII.GetBytes("world!");
using SHA256 sha = SHA256.Create();
sha.Update(first);
sha.Update(second);
byte[] hash = sha.DoFinal();
string result = $"SHA256 of 'Hello world!' is {HexConvertor.GetString(hash)}";
Assert.IsNotNull(result);
}
