private static ILiteSymmetricCipher CreateLiteCipher(
CipherMode cipherMode,
PaddingMode paddingMode,
ReadOnlySpan <byte> key,
int effectiveKeyLength,
ReadOnlySpan <byte> iv,
int blockSize,
int feedbackSizeInBytes,
int paddingSize,
bool encrypting)
{
using (SafeAlgorithmHandle algorithm = RC2BCryptModes.GetHandle(cipherMode, effectiveKeyLength))
{
// The BasicSymmetricCipherBCrypt ctor will increase algorithm reference count and take ownership.
return(new BasicSymmetricCipherLiteBCrypt(
algorithm,
cipherMode,
blockSize,
paddingSize,
key,
ownsParentHandle: true,
iv,
encrypting));
}
}
private static ICryptoTransform CreateTransformCore(
CipherMode cipherMode,
PaddingMode paddingMode,
byte[] key,
int effectiveKeyLength,
byte[] iv,
int blockSize,
bool encrypting)
{
SafeAlgorithmHandle algorithm = RC2BCryptModes.GetSharedHandle(cipherMode);
BasicSymmetricCipher cipher = new BasicSymmetricCipherBCrypt(algorithm, cipherMode, blockSize, key, effectiveKeyLength, iv, encrypting);
return(UniversalCryptoTransform.Create(paddingMode, cipher, encrypting));
}
private static ICryptoTransform CreateTransformCore(
CipherMode cipherMode,
PaddingMode paddingMode,
byte[] key,
int effectiveKeyLength,
byte[]?iv,
int blockSize,
bool encrypting)
{
using (SafeAlgorithmHandle algorithm = RC2BCryptModes.GetHandle(cipherMode, effectiveKeyLength))
{
// The BasicSymmetricCipherBCrypt ctor will increase algorithm reference count and take ownership.
BasicSymmetricCipher cipher = new BasicSymmetricCipherBCrypt(algorithm, cipherMode, blockSize, key, true, iv, encrypting);
return(UniversalCryptoTransform.Create(paddingMode, cipher, encrypting));
}
}
