<PackageReference Include="BouncyCastle.Cryptography" Version="2.5.0" />

Org.BouncyCastle.Crypto.Parameters.RC2Parameters

public class RC2Parameters : KeyParameter
namespace Org.BouncyCastle.Crypto.Parameters { public class RC2Parameters : KeyParameter { public int EffectiveKeyBits { get; } public RC2Parameters(byte[] key); public RC2Parameters(byte[] key, int keyOff, int keyLen); public RC2Parameters(byte[] key, int bits); public RC2Parameters(byte[] key, int keyOff, int keyLen, int bits); } }