DecryptCbc() [2/3]

byte[] System.Security.Cryptography.SymmetricAlgorithm.DecryptCbc ( ReadOnlySpan< byte > ciphertext, ReadOnlySpan< byte > iv, PaddingMode paddingMode = PaddingMode::PKCS7 )

inlineinherited

Definition at line 432 of file SymmetricAlgorithm.cs.

    {
        CheckPaddingMode(paddingMode);
        CheckInitializationVectorSize(iv);
        byte[] array = ArrayPool<byte>.Shared.Rent(ciphertext.Length);
        Span<byte> destination = array.AsSpan(0, ciphertext.Length);
        if (!TryDecryptCbcCore(ciphertext, iv, destination, paddingMode, out var bytesWritten) || (uint)bytesWritten > destination.Length)
        {
            throw new CryptographicException(System.SR.Argument_DestinationTooShort);
        }
        byte[] result = destination.Slice(0, bytesWritten).ToArray();
        CryptographicOperations.ZeroMemory(destination.Slice(0, bytesWritten));
        ArrayPool<byte>.Shared.Return(array);
        return result;
    }

References System.SR.Argument_DestinationTooShort, System.array, System.Security.Cryptography.SymmetricAlgorithm.CheckInitializationVectorSize(), System.Security.Cryptography.SymmetricAlgorithm.CheckPaddingMode(), System.destination, System.ReadOnlySpan< T >.Length, System.Buffers.ArrayPool< T >.Shared, System.Security.Cryptography.SymmetricAlgorithm.TryDecryptCbcCore(), and System.Security.Cryptography.CryptographicOperations.ZeroMemory().