protected override bool TryDecryptCfbCore(
ReadOnlySpan <byte> ciphertext,
ReadOnlySpan <byte> iv,
Span <byte> destination,
PaddingMode paddingMode,
int feedbackSizeInBits,
out int bytesWritten)
{
ValidateCFBFeedbackSize(feedbackSizeInBits);
ILiteSymmetricCipher cipher = CreateLiteCipher(
CipherMode.CFB,
paddingMode,
Key,
iv,
blockSize: BlockSize / BitsPerByte,
feedbackSizeInBits / BitsPerByte,
paddingSize: feedbackSizeInBits / BitsPerByte,
encrypting: false);
using (cipher)
{
return(UniversalCryptoOneShot.OneShotDecrypt(cipher, paddingMode, ciphertext, destination, out bytesWritten));
}
}
protected override bool TryDecryptEcbCore(
ReadOnlySpan <byte> ciphertext,
Span <byte> destination,
PaddingMode paddingMode,
out int bytesWritten)
{
if (!ValidKeySize(Key.Length, out int keySize))
{
throw new InvalidOperationException(SR.Cryptography_InvalidKeySize);
}
Debug.Assert(EffectiveKeySize == KeySize);
ILiteSymmetricCipher cipher = CreateLiteCipher(
CipherMode.ECB,
paddingMode,
Key,
iv: null,
blockSize: BlockSize / BitsPerByte,
0, /*feedback size */
paddingSize: BlockSize / BitsPerByte,
encrypting: false);
using (cipher)
{
return(UniversalCryptoOneShot.OneShotDecrypt(cipher, paddingMode, ciphertext, destination, out bytesWritten));
}
}
protected override bool TryDecryptEcbCore(
ReadOnlySpan <byte> ciphertext,
Span <byte> destination,
PaddingMode paddingMode,
out int bytesWritten)
{
ILiteSymmetricCipher cipher = CreateLiteCipher(
CipherMode.ECB,
paddingMode,
Key,
iv: null,
blockSize: BlockSize / BitsPerByte,
0, /*feedback size */
paddingSize: BlockSize / BitsPerByte,
encrypting: false);
using (cipher)
{
return(UniversalCryptoOneShot.OneShotDecrypt(cipher, paddingMode, ciphertext, destination, out bytesWritten));
}
}