BasicSymmetricCipher.cs

Go to the documentation of this file.

using System;
 
namespace Internal.Cryptography;
 
internal abstract class BasicSymmetricCipher : IDisposable
{
    public int BlockSizeInBytes { get; private set; }
 
    public int PaddingSizeInBytes { get; private set; }
 
    protected byte[] IV { get; private set; }
 
    protected BasicSymmetricCipher(byte[] iv, int blockSizeInBytes, int paddingSizeInBytes)
    {
        IV = iv;
        BlockSizeInBytes = blockSizeInBytes;
        PaddingSizeInBytes = ((paddingSizeInBytes > 0) ? paddingSizeInBytes : blockSizeInBytes);
    }
 
    public abstract int Transform(ReadOnlySpan<byte> input, Span<byte> output);
 
    public abstract int TransformFinal(ReadOnlySpan<byte> input, Span<byte> output);
 
    public void Dispose()
    {
        Dispose(disposing: true);
        GC.SuppressFinalize(this);
    }
 
    protected virtual void Dispose(bool disposing)
    {
        if (disposing && IV != null)
        {
            Array.Clear(IV);
            IV = null;
        }
    }
}