private static Stream CreateStream(Stream s, bool bEncrypt, byte[] pbKey, byte[] pbIV)
{
ValidateArguments(s, bEncrypt, pbKey, pbIV);
Serpent f = new SerpentManaged();
byte[] pbLocalIV = new byte[16];
Array.Copy(pbIV, pbLocalIV, 16);
f.IV = pbLocalIV;
byte[] pbLocalKey = new byte[32];
Array.Copy(pbKey, pbLocalKey, 32);
f.KeySize = 256;
f.Key = pbLocalKey;
f.Mode = m_rCipherMode;
f.Padding = m_rCipherPadding;
ICryptoTransform iTransform = (bEncrypt ? f.CreateEncryptor() : f.CreateDecryptor());
Debug.Assert(iTransform != null);
if (iTransform == null)
{
throw new SecurityException("Unable to create Serpent transform!");
}
return(new CryptoStream(s, iTransform, bEncrypt ? CryptoStreamMode.Write :
CryptoStreamMode.Read));
}
public static bool TestSerpent2()
{
SerpentManaged serpent = new SerpentManaged();
serpent.Padding = PaddingMode.None;
serpent.Mode = CipherMode.ECB;
byte[] key = new byte[] { 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
byte[] plaintext = new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
byte[] ciphertext = new byte[] { 0xa2, 0x23, 0xaa, 0x12, 0x88, 0x46, 0x3c, 0x0e, 0x2b, 0xe3, 0x8e, 0xbd, 0x82, 0x56, 0x16, 0xc0 };
byte[] initializationVector = new byte[16];
ICryptoTransform encryptor = serpent.CreateEncryptor(key, initializationVector);
ICryptoTransform decryptor = serpent.CreateDecryptor(key, initializationVector);
byte[] result1 = new byte[16];
byte[] result2 = new byte[16];
encryptor.TransformBlock(plaintext, 0, 16, result1, 0);
decryptor.TransformBlock(ciphertext, 0, 16, result2, 0);
return(ByteUtils.AreByteArraysEqual(result1, ciphertext) && ByteUtils.AreByteArraysEqual(result2, plaintext));
}
public static bool TestSerpent()
{
SerpentManaged serpent = new SerpentManaged();
serpent.Padding = PaddingMode.None;
serpent.Mode = CipherMode.ECB;
byte[] key = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f };
byte[] plaintext = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
byte[] ciphertext = new byte[] { 0xde, 0x26, 0x9f, 0xf8, 0x33, 0xe4, 0x32, 0xb8, 0x5b, 0x2e, 0x88, 0xd2, 0x70, 0x1c, 0xe7, 0x5c };
byte[] initializationVector = new byte[16];
ICryptoTransform encryptor = serpent.CreateEncryptor(key, initializationVector);
ICryptoTransform decryptor = serpent.CreateDecryptor(key, initializationVector);
byte[] result1 = new byte[16];
byte[] result2 = new byte[16];
encryptor.TransformBlock(plaintext, 0, 16, result1, 0);
decryptor.TransformBlock(ciphertext, 0, 16, result2, 0);
return(ByteUtils.AreByteArraysEqual(result1, ciphertext) && ByteUtils.AreByteArraysEqual(result2, plaintext));
}
public static List <KeyValuePairList <SymmetricAlgorithm, byte[]> > GetAlgorithms(byte[] key)
{
// AesCryptoServiceProvider will use AES-NI if availible, but Rijndael is almost 3 times faster if AES-NI is not available.
Rijndael aes = Rijndael.Create();
aes.Padding = PaddingMode.None;
aes.Mode = CipherMode.ECB;
SerpentManaged serpent = new SerpentManaged();
serpent.Padding = PaddingMode.None;
serpent.Mode = CipherMode.ECB;
TwofishManaged twofish = new TwofishManaged();
twofish.Padding = PaddingMode.None;
twofish.Mode = CipherMode.ECB;
List <KeyValuePairList <SymmetricAlgorithm, byte[]> > algorithms = new List <KeyValuePairList <SymmetricAlgorithm, byte[]> >();
KeyValuePairList <SymmetricAlgorithm, byte[]> aes_only = new KeyValuePairList <SymmetricAlgorithm, byte[]>();
aes_only.Add(aes, new byte[64]);
algorithms.Add(aes_only);
KeyValuePairList <SymmetricAlgorithm, byte[]> serpent_only = new KeyValuePairList <SymmetricAlgorithm, byte[]>();
serpent_only.Add(serpent, new byte[64]);
algorithms.Add(serpent_only);
KeyValuePairList <SymmetricAlgorithm, byte[]> twofish_only = new KeyValuePairList <SymmetricAlgorithm, byte[]>();
twofish_only.Add(twofish, new byte[64]);
algorithms.Add(twofish_only);
KeyValuePairList <SymmetricAlgorithm, byte[]> twofish_aes = new KeyValuePairList <SymmetricAlgorithm, byte[]>();
twofish_aes.Add(twofish, new byte[64]);
twofish_aes.Add(aes, new byte[64]);
algorithms.Add(twofish_aes);
KeyValuePairList <SymmetricAlgorithm, byte[]> serpent_twofish_aes = new KeyValuePairList <SymmetricAlgorithm, byte[]>();
serpent_twofish_aes.Add(serpent, new byte[64]);
serpent_twofish_aes.Add(twofish, new byte[64]);
serpent_twofish_aes.Add(aes, new byte[64]);
algorithms.Add(serpent_twofish_aes);
KeyValuePairList <SymmetricAlgorithm, byte[]> aes_serpent = new KeyValuePairList <SymmetricAlgorithm, byte[]>();
aes_serpent.Add(aes, new byte[64]);
aes_serpent.Add(serpent, new byte[64]);
algorithms.Add(aes_serpent);
KeyValuePairList <SymmetricAlgorithm, byte[]> aes_twofish_serpent = new KeyValuePairList <SymmetricAlgorithm, byte[]>();
aes_twofish_serpent.Add(aes, new byte[64]);
aes_twofish_serpent.Add(twofish, new byte[64]);
aes_twofish_serpent.Add(serpent, new byte[64]);
algorithms.Add(aes_twofish_serpent);
KeyValuePairList <SymmetricAlgorithm, byte[]> serpent_twofish = new KeyValuePairList <SymmetricAlgorithm, byte[]>();
serpent_twofish.Add(serpent, new byte[64]);
serpent_twofish.Add(twofish, new byte[64]);
algorithms.Add(serpent_twofish);
foreach (KeyValuePairList <SymmetricAlgorithm, byte[]> algorithm in algorithms)
{
AssignKey(algorithm, key);
}
return(algorithms);
}
