<PackageReference Include="BouncyCastle.Cryptography" Version="2.7.0" />

Org.BouncyCastle.Crypto.Engines.RC2Engine

public class RC2Engine : IBlockCipher
An implementation of RC2 as described in RFC 2268 "A Description of the RC2(r) Encryption Algorithm" R. Rivest.
namespace Org.BouncyCastle.Crypto.Engines { public class RC2Engine : IBlockCipher { public virtual string AlgorithmName { get; } public virtual void Init(bool forEncryption, ICipherParameters parameters); public virtual int GetBlockSize(); public virtual int ProcessBlock(byte[] input, int inOff, byte[] output, int outOff); public RC2Engine(); } }