<PackageReference Include="BouncyCastle.Cryptography" Version="2.5.1" />

Org.BouncyCastle.Operators.CmsKeyTransRecipientInfoGenerator

namespace Org.BouncyCastle.Operators { public class CmsKeyTransRecipientInfoGenerator : KeyTransRecipientInfoGenerator { public CmsKeyTransRecipientInfoGenerator(X509Certificate recipCert, IKeyWrapper keyWrapper); public CmsKeyTransRecipientInfoGenerator(IssuerAndSerialNumber issuerAndSerial, IKeyWrapper keyWrapper); public CmsKeyTransRecipientInfoGenerator(byte[] subjectKeyID, IKeyWrapper keyWrapper); } }