using Org.BouncyCastle.Utilities; using System; namespace Org.BouncyCastle.Asn1.CryptoPro { public class Gost28147Parameters : Asn1Encodable { private readonly Asn1OctetString iv; private readonly DerObjectIdentifier paramSet; public static Gost28147Parameters GetInstance(Asn1TaggedObject obj, bool explicitly) { return GetInstance(Asn1Sequence.GetInstance(obj, explicitly)); } public static Gost28147Parameters GetInstance(object obj) { if (obj == null || obj is Gost28147Parameters) return (Gost28147Parameters)obj; Asn1Sequence asn1Sequence = obj as Asn1Sequence; if (asn1Sequence != null) return new Gost28147Parameters(asn1Sequence); throw new ArgumentException("Invalid GOST3410Parameter: " + Platform.GetTypeName(obj)); } private Gost28147Parameters(Asn1Sequence seq) { if (seq.Count != 2) throw new ArgumentException("Wrong number of elements in sequence", "seq"); iv = Asn1OctetString.GetInstance(seq[0]); paramSet = DerObjectIdentifier.GetInstance(seq[1]); } public override Asn1Object ToAsn1Object() { return new DerSequence(iv, paramSet); } } }