public static void Run()
{
var cipherText = Convert.FromBase64String(
"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").AsSpan();
var iv = Convert.FromBase64String("DkBbcmQo1QH+ed1wTyBynA==").AsSpan();
var plaintext = new byte[cipherText.Length].AsSpan();
var keyBuffer = new byte[32].AsSpan();
var key = AesKey.Create(keyBuffer);
ref var a = ref keyBuffer[0];
public static void BasicEncryptionCBC128Test()
{
byte[] key =
{
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c
};
byte[] iv =
{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
};
byte[] plainText =
{
0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c,
0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11,
0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17,
0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10
};
byte[] cipherText =
{
0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46,
0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee,
0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b,
0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16,
0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09,
0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7
};
byte[] output = new byte[cipherText.Length];
AesKey k = AesKey.Create(key);
AES.Encrypt(plainText, output, k, iv);
Assert.AreEqual(cipherText, output);
}
public void TestKatVector(TestSet testSet)
{
if (testSet.Encrypt)
{
var acutal = new byte[testSet.Ciphertext.Length];
Aes.Encrypt(testSet.Plaintext, acutal, testSet.Iv, AesKey.Create(testSet.Key), testSet.Mode,
PaddingMode.None);
Assert.Equal(testSet.Ciphertext, acutal);
}
else
{
var acutal = new byte[testSet.Plaintext.Length];
Aes.Decrypt(testSet.Ciphertext, acutal, testSet.Iv, AesKey.Create(testSet.Key), testSet.Mode,
PaddingMode.None);
Assert.Equal(testSet.Plaintext, acutal);
}
}
public static void Aes128KeyTest()
{
byte[] key =
{
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
};
// todo improve this
// these are in big endian so the bytes need to be reversed
uint[] expandedKeyWords =
{
0x2b7e1516, 0x28aed2a6, 0xabf71588, 0x09cf4f3c,
0xa0fafe17, 0x88542cb1, 0x23a33939, 0x2a6c7605,
0xf2c295f2, 0x7a96b943, 0x5935807a, 0x7359f67f,
0x3d80477d, 0x4716fe3e, 0x1e237e44, 0x6d7a883b,
0xef44a541, 0xa8525b7f, 0xb671253b, 0xdb0bad00,
0xd4d1c6f8, 0x7c839d87, 0xcaf2b8bc, 0x11f915bc,
0x6d88a37a, 0x110b3efd, 0xdbf98641, 0xca0093fd,
0x4e54f70e, 0x5f5fc9f3, 0x84a64fb2, 0x4ea6dc4f,
0xead27321, 0xb58dbad2, 0x312bf560, 0x7f8d292f,
0xac7766f3, 0x19fadc21, 0x28d12941, 0x575c006e,
0xd014f9a8, 0xc9ee2589, 0xe13f0cc8, 0xb6630ca6
};
for (int i = 0; i < expandedKeyWords.Length; i++)
{
expandedKeyWords[i] = ByteUtils.ReverseBytes(expandedKeyWords[i]);
}
ReadOnlySpan <byte> expKey = MemoryMarshal.Cast <uint, byte>(expandedKeyWords);
AesKey aesKey = AesKey.Create(key);
ReadOnlySpan <byte> encryptionRoundKeys = aesKey.ExpandedKey.Slice(0, 11 * AesKey.BytesPerRoundKey);
Assert.IsTrue(expKey.SequenceEqual(encryptionRoundKeys));
}
public void TestKatVector(TestSet testSet)
{
if (testSet.Encrypt)
{
var actualCt = new byte[testSet.Ciphertext?.Length ?? 0];
var actualTag = new byte[testSet.Tag.Length];
Aes.Encrypt(testSet.Plaintext, actualCt, testSet.Iv, testSet.Aad, actualTag, AesKey.Create(testSet.Key));
Assert.Equal(testSet.Ciphertext, actualCt);
Assert.Equal(testSet.Tag, actualTag);
}
else
{
var actualPt = new byte[testSet.Plaintext?.Length ?? 0];
var result = Aes.Decrypt(testSet.Ciphertext, actualPt, testSet.Iv, testSet.Aad, testSet.Tag, AesKey.Create(testSet.Key));
Assert.Equal(testSet.Pass, result);
if (result)
{
Assert.Equal(testSet.Plaintext, actualPt);
}
}
}