private void CheckTestCase(OcbBlockCipher encCipher, OcbBlockCipher decCipher, string testName,
int macLengthBytes, byte[] P, byte[] C)
{
byte[] tag = Arrays.Copy(C, C.Length - macLengthBytes, macLengthBytes);
{
byte[] enc = new byte[encCipher.GetOutputSize(P.Length)];
int len = encCipher.ProcessBytes(P, 0, P.Length, enc, 0);
len += encCipher.DoFinal(enc, len);
if (enc.Length != len)
{
Fail("encryption reported incorrect length: " + testName);
}
if (!AreEqual(C, enc))
{
Fail("incorrect encrypt in: " + testName);
}
if (!AreEqual(tag, encCipher.GetMac()))
{
Fail("getMac() not the same as the appended tag: " + testName);
}
}
{
byte[] dec = new byte[decCipher.GetOutputSize(C.Length)];
int len = decCipher.ProcessBytes(C, 0, C.Length, dec, 0);
len += decCipher.DoFinal(dec, len);
if (dec.Length != len)
{
Fail("decryption reported incorrect length: " + testName);
}
if (!AreEqual(P, dec))
{
Fail("incorrect decrypt in: " + testName);
}
if (!AreEqual(tag, decCipher.GetMac()))
{
Fail("getMac() not the same as the appended tag: " + testName);
}
}
}
