<PackageReference Include="BouncyCastle.Cryptography" Version="2.3.1" />

OpenPgpCfbBlockCipher

public string AlgorithmName { get; }

public bool IsPartialBlockOkay { get; }

public int GetBlockSize()

public void Init(bool forEncryption, ICipherParameters parameters)

public int ProcessBlock(byte[] input, int inOff, byte[] output, int outOff)

public int ProcessBlock(ReadOnlySpan<byte> input, Span<byte> output)

public void Reset()