using Org.BouncyCastle.Asn1.X509; namespace Org.BouncyCastle.Asn1.Cms { public class KekRecipientInfo : Asn1Encodable { private DerInteger version; private KekIdentifier kekID; private AlgorithmIdentifier keyEncryptionAlgorithm; private Asn1OctetString encryptedKey; public DerInteger Version => version; public KekIdentifier KekID => kekID; public AlgorithmIdentifier KeyEncryptionAlgorithm => keyEncryptionAlgorithm; public Asn1OctetString EncryptedKey => encryptedKey; public static KekRecipientInfo GetInstance(object obj) { if (obj == null) return null; KekRecipientInfo kekRecipientInfo = obj as KekRecipientInfo; if (kekRecipientInfo != null) return kekRecipientInfo; return new KekRecipientInfo(Asn1Sequence.GetInstance(obj)); } public static KekRecipientInfo GetInstance(Asn1TaggedObject obj, bool explicitly) { return new KekRecipientInfo(Asn1Sequence.GetInstance(obj, explicitly)); } public KekRecipientInfo(KekIdentifier kekID, AlgorithmIdentifier keyEncryptionAlgorithm, Asn1OctetString encryptedKey) { version = new DerInteger(4); this.kekID = kekID; this.keyEncryptionAlgorithm = keyEncryptionAlgorithm; this.encryptedKey = encryptedKey; } public KekRecipientInfo(Asn1Sequence seq) { version = (DerInteger)seq[0]; kekID = KekIdentifier.GetInstance(seq[1]); keyEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(seq[2]); encryptedKey = (Asn1OctetString)seq[3]; } public override Asn1Object ToAsn1Object() { return new DerSequence(version, kekID, keyEncryptionAlgorithm, encryptedKey); } } }