public void Test_Encrypt()
{
var cipherWithFixedIv = new AeadAes256CbcHmacSha512Cipher(new FakeRandomNumberGenerator(Iv));
var actualCiphertext = cipherWithFixedIv.Encrypt(Key, Plaintext, AssociatedData);
Assert.Equal(CipherText, actualCiphertext);
}
public void Test_WorksWithRealIvGenerator()
{
var cipherWithRandomIv = new AeadAes256CbcHmacSha512Cipher();
var cipherText = cipherWithRandomIv.Encrypt(Key, Plaintext, AssociatedData);
var roundTripPlainText = cipherWithRandomIv.Decrypt(Key, cipherText, AssociatedData);
Assert.Equal(Plaintext, roundTripPlainText);
}
public void Test_AssociatedDataCanBeEmpty()
{
var emptyByteArray = Array.Empty <byte>();
var cipherWithFixedIv = new AeadAes256CbcHmacSha512Cipher(new FakeRandomNumberGenerator(emptyByteArray));
var cipherText = cipherWithFixedIv.Encrypt(Key, Plaintext, emptyByteArray);
var roundTripPlainText = new AeadAes256CbcHmacSha512Cipher().Decrypt(Key, cipherText, emptyByteArray);
Assert.Equal(Plaintext, roundTripPlainText);
}
public void Test_EncryptBadKeySize()
{
var cipherWithFixedIv = new AeadAes256CbcHmacSha512Cipher(new FakeRandomNumberGenerator(Iv));
Assert.Throws <InvalidCryptoKeyException>(() => cipherWithFixedIv.Encrypt(new byte[0], CipherText, AssociatedData));
}