using System; using Org.BouncyCastle.Asn1.X509; namespace Org.BouncyCastle.Asn1.Cmp { /* *
* KemOtherInfo ::= SEQUENCE { * staticString PKIFreeText, -- MUST be "CMP-KEM" * transactionID [0] OCTET STRING OPTIONAL, * senderNonce [1] OCTET STRING OPTIONAL, * recipNonce [2] OCTET STRING OPTIONAL, * len INTEGER (1..MAX), * mac AlgorithmIdentifier{MAC-ALGORITHM, {...}} * ct OCTET STRING * } **/ public class KemOtherInfo : Asn1Encodable { public static KemOtherInfo GetInstance(object obj) { if (obj == null) return null; if (obj is KemOtherInfo kemOtherInfo) return kemOtherInfo; return new KemOtherInfo(Asn1Sequence.GetInstance(obj)); } public static KemOtherInfo GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) => new KemOtherInfo(Asn1Sequence.GetInstance(taggedObject, declaredExplicit)); 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 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) { int count = seq.Count, pos = 0; if (count < 4 || count > 7) throw new ArgumentException("Bad sequence size: " + count, nameof(seq)); m_staticString = PkiFreeText.GetInstance(seq[pos++]); if (!DEFAULT_staticString.Equals(m_staticString)) throw new ArgumentException("staticString field should be " + DEFAULT_staticString); m_transactionID = Asn1Utilities.ReadOptionalContextTagged(seq, ref pos, 0, true, Asn1OctetString.GetTagged); m_senderNonce = Asn1Utilities.ReadOptionalContextTagged(seq, ref pos, 1, true, Asn1OctetString.GetTagged); m_recipNonce = Asn1Utilities.ReadOptionalContextTagged(seq, ref pos, 2, true, Asn1OctetString.GetTagged); m_len = DerInteger.GetInstance(seq[pos++]); m_mac = AlgorithmIdentifier.GetInstance(seq[pos++]); m_ct = Asn1OctetString.GetInstance(seq[pos++]); if (pos != count) throw new ArgumentException("Unexpected elements in sequence", nameof(seq)); } 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; /** *
* KemOtherInfo ::= SEQUENCE { * staticString PKIFreeText, -- MUST be "CMP-KEM" * transactionID [0] OCTET STRING OPTIONAL, * senderNonce [1] OCTET STRING OPTIONAL, * recipNonce [2] OCTET STRING OPTIONAL, * len INTEGER (1..MAX), * mac AlgorithmIdentifier{MAC-ALGORITHM, {...}} * ct OCTET STRING * } ** * @return a basic ASN.1 object representation. */ public override Asn1Object ToAsn1Object() { Asn1EncodableVector v = new Asn1EncodableVector(7); v.Add(m_staticString); v.AddOptionalTagged(true, 0, m_transactionID); v.AddOptionalTagged(true, 1, m_senderNonce); v.AddOptionalTagged(true, 2, m_recipNonce); v.Add(m_len); v.Add(m_mac); v.Add(m_ct); return new DerSequence(v); } } }