private static ICryptoTransform CreateTransformCore(
CipherMode cipherMode,
PaddingMode paddingMode,
byte[] key,
byte[] iv,
int blockSize,
bool encrypting)
{
// The algorithm pointer is a static pointer, so not having any cleanup code is correct.
IntPtr algorithm;
switch (cipherMode)
{
case CipherMode.CBC:
algorithm = Interop.Crypto.EvpDesCbc();
break;
case CipherMode.ECB:
algorithm = Interop.Crypto.EvpDesEcb();
break;
default:
throw new NotSupportedException();
}
BasicSymmetricCipher cipher = new OpenSslCipher(algorithm, cipherMode, blockSize, key, 0, iv, encrypting);
return UniversalCryptoTransform.Create(paddingMode, cipher, encrypting);
}
private static ICryptoTransform CreateTransformCore(
CipherMode cipherMode,
PaddingMode paddingMode,
byte[] key,
int effectiveKeyLength,
byte[]?iv,
int blockSize,
int feedbackSize,
int paddingSize,
bool encrypting)
{
// The algorithm pointer is a static pointer, so not having any cleanup code is correct.
IntPtr algorithm;
switch (cipherMode)
{
case CipherMode.CBC:
algorithm = Interop.Crypto.EvpRC2Cbc();
break;
case CipherMode.ECB:
algorithm = Interop.Crypto.EvpRC2Ecb();
break;
default:
throw new NotSupportedException();
}
BasicSymmetricCipher cipher = new OpenSslCipher(algorithm, cipherMode, blockSize, paddingSize, key, effectiveKeyLength, iv, encrypting);
return(UniversalCryptoTransform.Create(paddingMode, cipher, encrypting));
}
private static ICryptoTransform CreateTransformCore(
CipherMode cipherMode,
PaddingMode paddingMode,
byte[] key,
byte[] iv,
int blockSize,
bool encrypting)
{
// The algorithm pointer is a static pointer, so not having any cleanup code is correct.
IntPtr algorithm = GetAlgorithm(key.Length * 8, cipherMode);
BasicSymmetricCipher cipher = new OpenSslCipher(algorithm, cipherMode, blockSize, key, iv, encrypting);
return UniversalCryptoTransform.Create(paddingMode, cipher, encrypting);
}
private static ICryptoTransform CreateTransformCore(
CipherMode cipherMode,
PaddingMode paddingMode,
byte[] key,
byte[] iv,
int blockSize,
bool encrypting)
{
// The algorithm pointer is a static pointer, so not having any cleanup code is correct.
IntPtr algorithm = GetAlgorithm(key.Length * 8, cipherMode);
BasicSymmetricCipher cipher = new OpenSslCipher(algorithm, cipherMode, blockSize, key, iv, encrypting);
return(UniversalCryptoTransform.Create(paddingMode, cipher, encrypting));
}
private static UniversalCryptoTransform CreateTransformCore(
CipherMode cipherMode,
PaddingMode paddingMode,
byte[] key,
byte[]?iv,
int blockSize,
int feedbackSize,
int paddingSize,
bool encrypting)
{
// The algorithm pointer is a static pointer, so not having any cleanup code is correct.
IntPtr algorithm = GetAlgorithm(cipherMode, feedbackSize);
Interop.Crypto.EnsureLegacyAlgorithmsRegistered();
BasicSymmetricCipher cipher = new OpenSslCipher(algorithm, cipherMode, blockSize, paddingSize, key, iv, encrypting);
return(UniversalCryptoTransform.Create(paddingMode, cipher, encrypting));
}
private static UniversalCryptoTransform CreateTransformCore(
CipherMode cipherMode,
PaddingMode paddingMode,
byte[] key,
byte[]?iv,
int blockSize,
int feedbackSize,
int paddingSize,
bool encrypting)
{
// The algorithm pointer is a static pointer, so not having any cleanup code is correct.
IntPtr algorithm = IntPtr.Zero;
switch (cipherMode)
{
case CipherMode.CBC:
algorithm = Interop.Crypto.EvpDesCbc();
break;
case CipherMode.ECB:
algorithm = Interop.Crypto.EvpDesEcb();
break;
case CipherMode.CFB:
Debug.Assert(feedbackSize == 1, "DES with CFB should have FeedbackSize set to 1");
algorithm = Interop.Crypto.EvpDesCfb8();
break;
default:
throw new NotSupportedException();
}
Interop.Crypto.EnsureLegacyAlgorithmsRegistered();
BasicSymmetricCipher cipher = new OpenSslCipher(algorithm, cipherMode, blockSize, paddingSize, key, 0, iv, encrypting);
return(UniversalCryptoTransform.Create(paddingMode, cipher, encrypting));
}
private static UniversalCryptoTransform CreateTransformCore(
CipherMode cipherMode,
PaddingMode paddingMode,
byte[] key,
byte[]?iv,
int blockSize,
int paddingSize,
int feedbackSize,
bool encrypting)
{
// The algorithm pointer is a static pointer, so not having any cleanup code is correct.
IntPtr algorithm;
switch ((cipherMode, feedbackSize))
{
case (CipherMode.CBC, _):
algorithm = Interop.Crypto.EvpDes3Cbc();
break;
case (CipherMode.ECB, _):
algorithm = Interop.Crypto.EvpDes3Ecb();
break;
case (CipherMode.CFB, 1):
algorithm = Interop.Crypto.EvpDes3Cfb8();
break;
case (CipherMode.CFB, 8):
algorithm = Interop.Crypto.EvpDes3Cfb64();
break;
default:
throw new NotSupportedException();
}
BasicSymmetricCipher cipher = new OpenSslCipher(algorithm, cipherMode, blockSize, paddingSize, key, 0, iv, encrypting);
return(UniversalCryptoTransform.Create(paddingMode, cipher, encrypting));
}
