| public Init ( bool forEncryption, ICipherParameters parameters ) : void | ||
| forEncryption | bool | |
| parameters | ICipherParameters | |
| return | void | |
public override void PerformTest()
{
BufferedBlockCipher cipher = new BufferedBlockCipher(engine);
cipher.Init(true, param);
byte[] outBytes = new byte[input.Length];
int len1 = cipher.ProcessBytes(input, 0, input.Length, outBytes, 0);
cipher.DoFinal(outBytes, len1);
if (!AreEqual(outBytes, output))
{
Fail("failed - " + "expected " + Hex.ToHexString(output) + " got " + Hex.ToHexString(outBytes));
}
cipher.Init(false, param);
int len2 = cipher.ProcessBytes(output, 0, output.Length, outBytes, 0);
cipher.DoFinal(outBytes, len2);
if (!AreEqual(input, outBytes))
{
Fail("failed reversal got " + Hex.ToHexString(outBytes));
}
}
private IBufferedCipher CreateRijndael(WinzipAesEncryptionData winzipAesEncryptionData)
{
var blockCipher = new BufferedBlockCipher(new RijndaelEngine());
var param = new KeyParameter(winzipAesEncryptionData.KeyBytes);
blockCipher.Init(true, param);
return blockCipher;
}
public static Stream encryptStream(Stream stream)
{
BufferedBlockCipher output = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
output.Init(true, new ParametersWithIV(new KeyParameter(SecretKey), SecretKey, 0, 16));
BufferedBlockCipher input = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
input.Init(false, new ParametersWithIV(new KeyParameter(SecretKey), SecretKey, 0, 16));
return new CipherStream(stream, input, output);
}
public BouncyCastleAesStream(Stream stream, byte[] key)
{
_baseStream = stream;
_encryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
_encryptCipher.Init(true, new ParametersWithIV(new KeyParameter(key), key, 0, 16));
_decryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
_decryptCipher.Init(false, new ParametersWithIV(new KeyParameter(key), key, 0, 16));
}
public BouncyCastleAes(ITCPClient tcp, byte[] key)
{
Stream = tcp.GetStream();
EncryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
EncryptCipher.Init(true, new ParametersWithIV(new KeyParameter(key), key, 0, 16));
DecryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
DecryptCipher.Init(false, new ParametersWithIV(new KeyParameter(key), key, 0, 16));
}
public AesStream(Stream stream, byte[] key)
{
BaseStream = stream;
Key = key;
encryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
encryptCipher.Init(true, new ParametersWithIV(
new KeyParameter(key), key, 0, 16));
decryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
decryptCipher.Init(false, new ParametersWithIV(
new KeyParameter(key), key, 0, 16));
}
public override void PerformTest()
{
BufferedBlockCipher cipher = new BufferedBlockCipher(engine);
cipher.Init(true, param);
byte[] outBytes = new byte[input.Length];
Array.Copy(input, 0, outBytes, 0, outBytes.Length);
for (int i = 0; i != iterations; i++)
{
int len1 = cipher.ProcessBytes(outBytes, 0, outBytes.Length, outBytes, 0);
cipher.DoFinal(outBytes, len1);
}
if (!AreEqual(outBytes, output))
{
Fail("failed - " + "expected " + Hex.ToHexString(output) + " got " + Hex.ToHexString(outBytes));
}
cipher.Init(false, param);
for (int i = 0; i != iterations; i++)
{
int len1 = cipher.ProcessBytes(outBytes, 0, outBytes.Length, outBytes, 0);
cipher.DoFinal(outBytes, len1);
}
if (!AreEqual(input, outBytes))
{
Fail("failed reversal");
}
}
public AesStream(Stream stream, byte[] key)
{
BaseStream = stream;
Key = key;
#if MONO
encryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
encryptCipher.Init(true, new ParametersWithIV(
new KeyParameter(key), key, 0, 16));
decryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
decryptCipher.Init(false, new ParametersWithIV(
new KeyParameter(key), key, 0, 16));
#else
var rijndael = GenerateAES(key);
var encryptTransform = rijndael.CreateEncryptor();
var decryptTransform = rijndael.CreateDecryptor();
encryptStream = new CryptoStream(BaseStream, encryptTransform, CryptoStreamMode.Write);
decryptStream = new CryptoStream(BaseStream, decryptTransform, CryptoStreamMode.Read);
#endif
}
public string GenerateActivationKey()
{
var engine = new BlowfishEngine();
var cipher = new CbcBlockCipher(engine);
var bbc = new BufferedBlockCipher(cipher);
bbc.Init(true, new ParametersWithIV(new KeyParameter(Encoding.ASCII.GetBytes(EncKey)), IV));
var n = Prng.Next(0, 999999);
var s = String.Format("{0,6};YNAB4;;;;", n); // must be fixed length due to padding issue
var sb = Encoding.ASCII.GetBytes(s);
sb[sb.Length - 4] = 0x4; //
sb[sb.Length - 3] = 0x4; // padding issue???
sb[sb.Length - 2] = 0x4; // PCKS#5
sb[sb.Length - 1] = 0x4; //
var cipherText = new byte[bbc.GetOutputSize(sb.Length)];
var outputLen = bbc.ProcessBytes(sb, 0, sb.Length, cipherText, 0);
bbc.DoFinal(sb, outputLen);
var encryptedLic = Base32.EncodeByteArray(cipherText);
return encryptedLic;
}
private static byte[] decrypt28147cfb(byte[] key, byte[] input)
{
ICipherParameters param = new ParametersWithIV(
new ParametersWithSBox(
new KeyParameter(key), //key
Gost28147Engine.GetSBox("E-A")), //type S-box
Hex.Decode("0000000000000000")); //IV
byte[] output = new byte[input.Length];
BufferedBlockCipher cipher = new BufferedBlockCipher(new CfbBlockCipher(new Gost28147Engine(), 64));
cipher.Init(false, param);
int len1 = cipher.ProcessBytes(input, 0, input.Length, output, 0);
try
{
cipher.DoFinal(output, len1);
}
catch (CryptoException ex)
{
//MessageBox.Show("Error: " + ex.Message);
}
return output;
}
/// <summary>
/// Encapsulates the specified links into an RSDF container.
/// </summary>
/// <param name="links">The links.</param>
/// <returns>
/// Base-16-encoded RSDF container.
/// </returns>
public static string CreateRSDF(string[] links)
{
var aes = new AesEngine();
var cfb = new CfbBlockCipher(aes, 8);
var pad = new BufferedBlockCipher(cfb);
var sb = new StringBuilder();
pad.Init(true, new ParametersWithIV(new KeyParameter(RSDFKey), RSDFIV));
foreach (var link in links)
{
var input = Encoding.UTF8.GetBytes(link);
var output = new byte[input.Length];
for (var i = 0; i < input.Length; i++)
{
output[i] = pad.ProcessByte(input[i])[0];
}
sb.Append(Convert.ToBase64String(output));
sb.Append(Environment.NewLine);
}
return BitConverter.ToString(Encoding.ASCII.GetBytes(sb.ToString())).Replace("-", string.Empty);
}
public void EncryptStream(byte[] key)
{
this.NetStream.Flush();
encryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
encryptCipher.Init(true, new ParametersWithIV(
new KeyParameter(key), key, 0, 16));
decryptCipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
decryptCipher.Init(false, new ParametersWithIV(
new KeyParameter(key), key, 0, 16));
encrypted = true;
}
public Packet MessageDecrypt(Packet outer)
{
byte[] remoteKeyData = outer.Body.Take(21).ToArray();
byte[] ivData = outer.Body.Skip(21).Take(4).ToArray();
byte[] innerEncryptedData = outer.Body.Skip(25).Take(outer.Body.Length - 29).ToArray();
// Decode the body
ECKeyPair remoteEphemeralKeys = ECKeyPair.LoadKeys (SecNamedCurves.GetByName ("secp160r1"), remoteKeyData, null);
var idAgreement = ECDHAgree (remoteEphemeralKeys.PublicKey, Key.PrivateKey);
var agreedHash = Helpers.SHA256Hash (Helpers.ToByteArray (idAgreement, 20));
var aesKey = Helpers.FoldOnce(agreedHash);
// Pad out the IV
byte[] aesIV = new byte[16];
Array.Clear (aesIV, 0, 16);
Buffer.BlockCopy (ivData, 0, aesIV, 0, 4);
// Decrypt it
var cipher = new BufferedBlockCipher (new SicBlockCipher (new AesFastEngine ()));
var parameters = new ParametersWithIV (new KeyParameter (aesKey), aesIV);
cipher.Init (false, parameters);
byte[] decryptedBody = new byte[innerEncryptedData.Length];
var offset = cipher.ProcessBytes (innerEncryptedData, decryptedBody, 0);
cipher.DoFinal (decryptedBody, offset);
Packet outPacket = Packet.DecodePacket (decryptedBody);
return outPacket;
}
private byte[] DecryptBytes(byte[] p_key, byte[] p_data)
{
BufferedBlockCipher cipher = new BufferedBlockCipher(new BlowfishEngine());
// init using the given key
cipher.Init(false, new KeyParameter(p_key));
// decrypt the given data
return cipher.ProcessBytes(p_data);
}
private BufferedBlockCipher GenerateAES(byte[] key, bool forEncryption)
{
BufferedBlockCipher cipher = new BufferedBlockCipher(new CfbBlockCipher(new AesFastEngine(), 8));
cipher.Init(forEncryption, new ParametersWithIV(new KeyParameter(key), key));
return cipher;
}
