private static byte[] RSAEncryptData(AsymmetricKeyParameter publicKey, byte[] originalDataBytes)
{
bool isEncryption = true;
byte[] encryptedDataArray;
using (MemoryStream originalDataStream = new MemoryStream(originalDataBytes, false))
{
using (MemoryStream encryptedDataStream = new MemoryStream())
{
IBufferedCipher rsacipher = RSACreateCipher(isEncryption, publicKey);
using (CipherStream cipherStream = new CipherStream(originalDataStream, rsacipher, null))
{
int oneByte;
while ((oneByte = cipherStream.ReadByte()) >= 0)
{
encryptedDataStream.WriteByte((byte)oneByte);
}
cipherStream.Close();
cipherStream.Dispose();
}
encryptedDataArray = encryptedDataStream.ToArray();
encryptedDataStream.Close();
encryptedDataStream.Dispose();
}
originalDataStream.Close();
originalDataStream.Dispose();
}
return(encryptedDataArray);
}
public static byte[] AESEncryptData(byte[] originalDataBytes, byte[] aesKeyByteData, byte[] iv = null)
{
bool isEncryption = true;
MemoryStream originalDataStream = new MemoryStream(originalDataBytes, false);
MemoryStream encryptedDataStream = new MemoryStream();
IBufferedCipher aesCipher = AESCreateCipher(isEncryption, aesKeyByteData, iv);
CipherStream cipherStream = new CipherStream(originalDataStream, aesCipher, null);
int oneByte;
while ((oneByte = cipherStream.ReadByte()) >= 0)
{
encryptedDataStream.WriteByte((byte)oneByte);
}
encryptedDataStream.Close();
cipherStream.Close();
return(encryptedDataStream.ToArray());
}
private static byte[] RSAEntschluesselDaten(AsymmetricKeyParameter privateKey, byte[] encryptedDataBytes)
{
bool isEncryption = false;
MemoryStream enryptedDataSream = new MemoryStream(encryptedDataBytes, false);
MemoryStream decryptedDataStream = new MemoryStream();
IBufferedCipher aesCipher = RSACreateCipher(isEncryption, privateKey);
CipherStream decodedCipherStream = new CipherStream(enryptedDataSream, aesCipher, null);
int oneByte;
while ((oneByte = decodedCipherStream.ReadByte()) >= 0)
{
decryptedDataStream.WriteByte((byte)oneByte);
}
decodedCipherStream.Close();
decryptedDataStream.Close();
return(decryptedDataStream.ToArray());
}
public static byte[] AESDecryptData(byte[] encryptedDataBytes, byte[] aesKeyByteData, byte[] iv = null)
{
bool isEncryption = false;
MemoryStream enryptedDataSream = new MemoryStream(encryptedDataBytes, false);
MemoryStream decryptedDataStream = new MemoryStream();
IBufferedCipher aesCipher = AESCreateCipher(isEncryption, aesKeyByteData, iv);
CipherStream decodedCipherStream = new CipherStream(enryptedDataSream, aesCipher, null);
int oneByte;
while ((oneByte = decodedCipherStream.ReadByte()) >= 0)
{
decryptedDataStream.WriteByte((byte)oneByte);
}
decodedCipherStream.Close();
decryptedDataStream.Close();
return(decryptedDataStream.ToArray());
}
private byte[] encryptOnRead(byte[] dataBytes)
{
MemoryStream dataStream = new MemoryStream(dataBytes, false);
MemoryStream encryptedDataStream = new MemoryStream();
IBufferedCipher inCipher = createCipher(true);
CipherStream inCipherStream = new CipherStream(dataStream, inCipher, null);
int ch;
while ((ch = inCipherStream.ReadByte()) >= 0)
{
encryptedDataStream.WriteByte((byte) ch);
}
encryptedDataStream.Close();
inCipherStream.Close();
byte[] encryptedDataBytes = encryptedDataStream.ToArray();
Assert.AreEqual(dataBytes.Length, encryptedDataBytes.Length);
return encryptedDataBytes;
}
private byte[] encryptOnRead(byte[] dataBytes)
{
MemoryStream dataStream = new MemoryStream(dataBytes, false);
MemoryStream encryptedDataStream = new MemoryStream();
IBufferedCipher inCipher = createCipher(true);
CipherStream inCipherStream = new CipherStream(dataStream, inCipher, null);
int ch;
while ((ch = inCipherStream.ReadByte()) >= 0)
{
encryptedDataStream.WriteByte((byte)ch);
}
encryptedDataStream.Close();
inCipherStream.Close();
byte[] encryptedDataBytes = encryptedDataStream.ToArray();
Assert.AreEqual(dataBytes.Length, encryptedDataBytes.Length);
return(encryptedDataBytes);
}
private void doRunTest(
string name,
int ivLength)
{
string lCode = "ABCDEFGHIJKLMNOPQRSTUVWXY0123456789";
string baseName = name;
if (name.IndexOf('/') >= 0)
{
baseName = name.Substring(0, name.IndexOf('/'));
}
CipherKeyGenerator kGen = GeneratorUtilities.GetKeyGenerator(baseName);
IBufferedCipher inCipher = CipherUtilities.GetCipher(name);
IBufferedCipher outCipher = CipherUtilities.GetCipher(name);
KeyParameter key = ParameterUtilities.CreateKeyParameter(baseName, kGen.GenerateKey());
MemoryStream bIn = new MemoryStream(Encoding.ASCII.GetBytes(lCode), false);
MemoryStream bOut = new MemoryStream();
// In the Java build, this IV would be implicitly created and then retrieved with getIV()
ICipherParameters cipherParams = key;
if (ivLength > 0)
{
cipherParams = new ParametersWithIV(cipherParams, new byte[ivLength]);
}
inCipher.Init(true, cipherParams);
// TODO Should we provide GetIV() method on IBufferedCipher?
//if (inCipher.getIV() != null)
//{
// outCipher.Init(false, new ParametersWithIV(key, inCipher.getIV()));
//}
//else
//{
// outCipher.Init(false, key);
//}
outCipher.Init(false, cipherParams);
CipherStream cIn = new CipherStream(bIn, inCipher, null);
CipherStream cOut = new CipherStream(bOut, null, outCipher);
int c;
while ((c = cIn.ReadByte()) >= 0)
{
cOut.WriteByte((byte)c);
}
cIn.Close();
cOut.Flush();
cOut.Close();
byte[] bs = bOut.ToArray();
string res = Encoding.ASCII.GetString(bs, 0, bs.Length);
if (!res.Equals(lCode))
{
Fail("Failed - decrypted data doesn't match.");
}
}
