using Org.BouncyCastle.Asn1.X509; namespace Org.BouncyCastle.Asn1.Cms { public class KeyTransRecipientInfo : Asn1Encodable { private DerInteger version; private RecipientIdentifier rid; private AlgorithmIdentifier keyEncryptionAlgorithm; private Asn1OctetString encryptedKey; public DerInteger Version => version; public RecipientIdentifier RecipientIdentifier => rid; public AlgorithmIdentifier KeyEncryptionAlgorithm => keyEncryptionAlgorithm; public Asn1OctetString EncryptedKey => encryptedKey; public static KeyTransRecipientInfo GetInstance(object obj) { if (obj == null) return null; KeyTransRecipientInfo keyTransRecipientInfo = obj as KeyTransRecipientInfo; if (keyTransRecipientInfo != null) return keyTransRecipientInfo; return new KeyTransRecipientInfo(Asn1Sequence.GetInstance(obj)); } public static KeyTransRecipientInfo GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new KeyTransRecipientInfo(Asn1Sequence.GetInstance(taggedObject, declaredExplicit)); } public KeyTransRecipientInfo(RecipientIdentifier rid, AlgorithmIdentifier keyEncryptionAlgorithm, Asn1OctetString encryptedKey) { if (rid.ToAsn1Object() is Asn1TaggedObject) version = new DerInteger(2); else version = new DerInteger(0); this.rid = rid; this.keyEncryptionAlgorithm = keyEncryptionAlgorithm; this.encryptedKey = encryptedKey; } public KeyTransRecipientInfo(Asn1Sequence seq) { version = (DerInteger)seq[0]; rid = RecipientIdentifier.GetInstance(seq[1]); keyEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(seq[2]); encryptedKey = (Asn1OctetString)seq[3]; } public override Asn1Object ToAsn1Object() { return new DerSequence(version, rid, keyEncryptionAlgorithm, encryptedKey); } } }