66 lines
1.6 KiB
C#
66 lines
1.6 KiB
C#
using System;
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using Org.BouncyCastle.Asn1.X509;
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using Org.BouncyCastle.Utilities;
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namespace Org.BouncyCastle.Asn1.Cms;
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public class KeyTransRecipientInfo : Asn1Encodable
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{
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private DerInteger version;
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private RecipientIdentifier rid;
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private AlgorithmIdentifier keyEncryptionAlgorithm;
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private Asn1OctetString encryptedKey;
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public DerInteger Version => version;
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public RecipientIdentifier RecipientIdentifier => rid;
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public AlgorithmIdentifier KeyEncryptionAlgorithm => keyEncryptionAlgorithm;
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public Asn1OctetString EncryptedKey => encryptedKey;
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public KeyTransRecipientInfo(RecipientIdentifier rid, AlgorithmIdentifier keyEncryptionAlgorithm, Asn1OctetString encryptedKey)
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{
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if (rid.ToAsn1Object() is Asn1TaggedObject)
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{
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version = new DerInteger(2);
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}
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else
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{
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version = new DerInteger(0);
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}
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this.rid = rid;
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this.keyEncryptionAlgorithm = keyEncryptionAlgorithm;
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this.encryptedKey = encryptedKey;
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}
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public KeyTransRecipientInfo(Asn1Sequence seq)
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{
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version = (DerInteger)seq[0];
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rid = RecipientIdentifier.GetInstance(seq[1]);
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keyEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(seq[2]);
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encryptedKey = (Asn1OctetString)seq[3];
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}
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public static KeyTransRecipientInfo GetInstance(object obj)
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{
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if (obj == null || obj is KeyTransRecipientInfo)
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{
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return (KeyTransRecipientInfo)obj;
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}
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if (obj is Asn1Sequence)
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{
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return new KeyTransRecipientInfo((Asn1Sequence)obj);
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}
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throw new ArgumentException("Illegal object in KeyTransRecipientInfo: " + Platform.GetTypeName(obj));
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}
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public override Asn1Object ToAsn1Object()
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{
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return new DerSequence(version, rid, keyEncryptionAlgorithm, encryptedKey);
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}
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}
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