public static void TripleDESRoundTripZerosCBC(int keySize, string expectedCipherHex, string keyHex)
{
byte[] key = keyHex.HexToByteArray();
byte[] iv = "95498b5bf570f4c8".HexToByteArray();
using (TripleDES alg = TripleDESFactory.Create())
{
alg.Key = key;
Assert.Equal(keySize, alg.KeySize);
alg.IV = iv;
alg.Padding = PaddingMode.Zeros;
alg.Mode = CipherMode.CBC;
byte[] plainText = "f9e9a1385bf3bd056d6a06eac662736891bd3e6837".HexToByteArray();
byte[] cipher = alg.Encrypt(plainText);
byte[] expectedCipher = expectedCipherHex.HexToByteArray();
Assert.Equal <byte>(expectedCipher, cipher);
byte[] decrypted = alg.Decrypt(cipher);
byte[] expectedDecrypted = "f9e9a1385bf3bd056d6a06eac662736891bd3e6837000000".HexToByteArray();
Assert.Equal <byte>(expectedDecrypted, decrypted);
}
}
public static void TripleDES_FailureToRoundTrip192Bits_DifferentPadding_ANSIX923_ZerosECB()
{
byte[] key = "9da5b265179d65f634dfc95513f25094411e51bb3be877ef".HexToByteArray();
using (TripleDES alg = TripleDESFactory.Create())
{
alg.Key = key;
alg.Padding = PaddingMode.ANSIX923;
alg.Mode = CipherMode.ECB;
byte[] plainText = "77a8b2efb45addb38d7ef3aa9e6ab5d71957445ab8".HexToByteArray();
byte[] cipher = alg.Encrypt(plainText);
byte[] expectedCipher = "149ec32f558b27c7e4151e340d8184f1c90f0a499e20fda9".HexToByteArray();
Assert.Equal <byte>(expectedCipher, cipher);
alg.Padding = PaddingMode.Zeros;
byte[] decrypted = alg.Decrypt(cipher);
byte[] expectedDecrypted = "77a8b2efb45addb38d7ef3aa9e6ab5d71957445ab8".HexToByteArray();
// They should not decrypt to the same value
Assert.NotEqual <byte>(plainText, decrypted);
}
}
public static void TripleDESRoundTripNoneCBC(int keySize, string expectedCipherHex, string keyHex)
{
byte[] key = keyHex.HexToByteArray();
byte[] iv = "5fbc5bc21b8597d8".HexToByteArray();
using (TripleDES alg = TripleDESFactory.Create())
{
alg.Key = key;
Assert.Equal(keySize, alg.KeySize);
alg.IV = iv;
alg.Padding = PaddingMode.None;
alg.Mode = CipherMode.CBC;
byte[] plainText = "79a86903608e133e020e1dc68c9835250c2f17b0ebeed91b".HexToByteArray();
byte[] cipher = alg.Encrypt(plainText);
byte[] expectedCipher = expectedCipherHex.HexToByteArray();
Assert.Equal <byte>(expectedCipher, cipher);
byte[] decrypted = alg.Decrypt(cipher);
byte[] expectedDecrypted = "79a86903608e133e020e1dc68c9835250c2f17b0ebeed91b".HexToByteArray();
Assert.Equal <byte>(expectedDecrypted, decrypted);
}
}
public static void EncryptorReuse_LeadsToSameResults(CipherMode cipherMode, int feedbackSize)
{
// AppleCCCryptor does not allow calling Reset on CFB cipher.
// this test validates that the behavior is taken into consideration.
var input = "b72606c98d8e4fabf08839abf7a0ac61".HexToByteArray();
using (TripleDES tdes = TripleDESFactory.Create())
{
tdes.Mode = cipherMode;
if (feedbackSize > 0)
{
tdes.FeedbackSize = feedbackSize;
}
using (ICryptoTransform transform = tdes.CreateEncryptor())
{
byte[] output1 = transform.TransformFinalBlock(input, 0, input.Length);
byte[] output2 = transform.TransformFinalBlock(input, 0, input.Length);
Assert.Equal(output1, output2);
}
}
}
public static void TripleDESRoundTripPKCS7CBC(int keySize, string expectedCipherHex, string keyHex)
{
byte[] key = keyHex.HexToByteArray();
byte[] iv = "8fc67ce5e7f28cde".HexToByteArray();
using (TripleDES alg = TripleDESFactory.Create())
{
alg.Key = key;
Assert.Equal(keySize, alg.KeySize);
alg.IV = iv;
alg.Padding = PaddingMode.PKCS7;
alg.Mode = CipherMode.CBC;
byte[] plainText = "e867f915e275eab27d6951165d26dec6dd0acafcfc".HexToByteArray();
byte[] cipher = alg.Encrypt(plainText);
byte[] expectedCipher = expectedCipherHex.HexToByteArray();
Assert.Equal <byte>(expectedCipher, cipher);
byte[] decrypted = alg.Decrypt(cipher);
byte[] expectedDecrypted = "e867f915e275eab27d6951165d26dec6dd0acafcfc".HexToByteArray();
Assert.Equal <byte>(expectedDecrypted, decrypted);
}
}
protected override SymmetricAlgorithm CreateAlgorithm() => TripleDESFactory.Create();