using Org.BouncyCastle.Asn1.X509; using Org.BouncyCastle.Math; using Org.BouncyCastle.Utilities; using System; namespace Org.BouncyCastle.Asn1.Pkcs { public class MacData : Asn1Encodable { internal DigestInfo digInfo; internal byte[] salt; internal BigInteger iterationCount; public DigestInfo Mac => digInfo; public BigInteger IterationCount => iterationCount; public static MacData GetInstance(object obj) { if (obj is MacData) return (MacData)obj; if (obj is Asn1Sequence) return new MacData((Asn1Sequence)obj); throw new ArgumentException("Unknown object in factory: " + Platform.GetTypeName(obj), "obj"); } private MacData(Asn1Sequence seq) { digInfo = DigestInfo.GetInstance(seq[0]); salt = ((Asn1OctetString)seq[1]).GetOctets(); if (seq.Count == 3) iterationCount = ((DerInteger)seq[2]).Value; else iterationCount = BigInteger.One; } public MacData(DigestInfo digInfo, byte[] salt, int iterationCount) { this.digInfo = digInfo; this.salt = (byte[])salt.Clone(); this.iterationCount = BigInteger.ValueOf(iterationCount); } public byte[] GetSalt() { return (byte[])salt.Clone(); } public override Asn1Object ToAsn1Object() { Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(digInfo, new DerOctetString(salt)); if (!iterationCount.Equals(BigInteger.One)) asn1EncodableVector.Add(new DerInteger(iterationCount)); return new DerSequence(asn1EncodableVector); } } }