using Org.BouncyCastle.Asn1.X509; using System; namespace Org.BouncyCastle.Asn1.Cmp { public class KemOtherInfo : Asn1Encodable { private static readonly PkiFreeText DEFAULT_staticString = new PkiFreeText("CMP-KEM"); private readonly PkiFreeText m_staticString; private readonly Asn1OctetString m_transactionID; private readonly Asn1OctetString m_senderNonce; private readonly Asn1OctetString m_recipNonce; private readonly DerInteger m_len; private readonly AlgorithmIdentifier m_mac; private readonly Asn1OctetString m_ct; public virtual Asn1OctetString TransactionID => m_transactionID; public virtual Asn1OctetString SenderNonce => m_senderNonce; public virtual Asn1OctetString RecipNonce => m_recipNonce; public virtual DerInteger Len => m_len; public virtual AlgorithmIdentifier Mac => m_mac; public virtual Asn1OctetString Ct => m_ct; public static KemOtherInfo GetInstance(object obj) { if (obj == null) return null; KemOtherInfo kemOtherInfo = obj as KemOtherInfo; if (kemOtherInfo != null) return kemOtherInfo; return new KemOtherInfo(Asn1Sequence.GetInstance(obj)); } public static KemOtherInfo GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new KemOtherInfo(Asn1Sequence.GetInstance(taggedObject, declaredExplicit)); } public KemOtherInfo(Asn1OctetString transactionID, Asn1OctetString senderNonce, Asn1OctetString recipNonce, DerInteger len, AlgorithmIdentifier mac, Asn1OctetString ct) { m_staticString = DEFAULT_staticString; m_transactionID = transactionID; m_senderNonce = senderNonce; m_recipNonce = recipNonce; m_len = len; m_mac = mac; m_ct = ct; } public KemOtherInfo(Asn1OctetString transactionID, Asn1OctetString senderNonce, Asn1OctetString recipNonce, long len, AlgorithmIdentifier mac, Asn1OctetString ct) : this(transactionID, senderNonce, recipNonce, new DerInteger(len), mac, ct) { } private KemOtherInfo(Asn1Sequence seq) { if (seq.Count < 4 || seq.Count > 7) throw new ArgumentException("sequence size should be between 4 and 7 inclusive", "seq"); int num = 0; m_staticString = PkiFreeText.GetInstance(seq[num]); if (!DEFAULT_staticString.Equals(m_staticString)) throw new ArgumentException("staticString field should be " + DEFAULT_staticString?.ToString()); Asn1TaggedObject asn1TaggedObject = seq[++num] as Asn1TaggedObject; if (asn1TaggedObject != null && Asn1Utilities.TryGetContextBaseUniversal(asn1TaggedObject, 0, true, 4, out Asn1Object baseUniversal)) { m_transactionID = (Asn1OctetString)baseUniversal; asn1TaggedObject = (seq[++num] as Asn1TaggedObject); } if (asn1TaggedObject != null && Asn1Utilities.TryGetContextBaseUniversal(asn1TaggedObject, 1, true, 4, out Asn1Object baseUniversal2)) { m_senderNonce = (Asn1OctetString)baseUniversal2; asn1TaggedObject = (seq[++num] as Asn1TaggedObject); } if (asn1TaggedObject != null && Asn1Utilities.TryGetContextBaseUniversal(asn1TaggedObject, 2, true, 4, out Asn1Object baseUniversal3)) { m_recipNonce = (Asn1OctetString)baseUniversal3; asn1TaggedObject = (seq[++num] as Asn1TaggedObject); } if (asn1TaggedObject != null) throw new ArgumentException("unknown tag: " + Asn1Utilities.GetTagText(asn1TaggedObject)); m_len = DerInteger.GetInstance(seq[num]); m_mac = AlgorithmIdentifier.GetInstance(seq[++num]); m_ct = Asn1OctetString.GetInstance(seq[++num]); if (++num != seq.Count) throw new ArgumentException("unexpected data at end of sequence", "seq"); } public override Asn1Object ToAsn1Object() { Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(7); asn1EncodableVector.Add(m_staticString); asn1EncodableVector.AddOptionalTagged(true, 0, m_transactionID); asn1EncodableVector.AddOptionalTagged(true, 1, m_senderNonce); asn1EncodableVector.AddOptionalTagged(true, 2, m_recipNonce); asn1EncodableVector.Add(m_len); asn1EncodableVector.Add(m_mac); asn1EncodableVector.Add(m_ct); return new DerSequence(asn1EncodableVector); } } }