<PackageReference Include="BouncyCastle.Cryptography" Version="2.3.0" />

KekRecipientInfo

public Asn1OctetString EncryptedKey { get; }

public KekIdentifier KekID { get; }

public DerInteger Version { get; }

public KekRecipientInfo(KekIdentifier kekID, AlgorithmIdentifier keyEncryptionAlgorithm, Asn1OctetString encryptedKey)

public static KekRecipientInfo GetInstance(object obj)

public static KekRecipientInfo GetInstance(Asn1TaggedObject obj, bool explicitly)