GOST3410PublicKeyAlgParameters.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » CryptoPro » C# / CSharp Open Source

using System;

using Org.BouncyCastle.Asn1;

namespace Org.BouncyCastle.Asn1.CryptoPro{
    public class Gost3410PublicKeyAlgParameters
        : Asn1Encodable
    {
        private DerObjectIdentifier  publicKeyParamSet;
        private DerObjectIdentifier  digestParamSet;
        private DerObjectIdentifier  encryptionParamSet;

    public static Gost3410PublicKeyAlgParameters GetInstance(
            Asn1TaggedObject  obj,
            bool        explicitly)
        {
            return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
        }

    public static Gost3410PublicKeyAlgParameters GetInstance(
            object obj)
        {
            if (obj == null || obj is Gost3410PublicKeyAlgParameters)
            {
                return (Gost3410PublicKeyAlgParameters) obj;
            }

      if (obj is Asn1Sequence)
            {
                return new Gost3410PublicKeyAlgParameters((Asn1Sequence) obj);
            }

      throw new ArgumentException("Invalid GOST3410Parameter: " + obj.GetType().Name);
        }

    public Gost3410PublicKeyAlgParameters(
            DerObjectIdentifier  publicKeyParamSet,
            DerObjectIdentifier  digestParamSet)
      : this (publicKeyParamSet, digestParamSet, null)
        {
        }

    public Gost3410PublicKeyAlgParameters(
            DerObjectIdentifier  publicKeyParamSet,
            DerObjectIdentifier  digestParamSet,
            DerObjectIdentifier  encryptionParamSet)
        {
      if (publicKeyParamSet == null)
        throw new ArgumentNullException("publicKeyParamSet");
      if (digestParamSet == null)
        throw new ArgumentNullException("digestParamSet");

      this.publicKeyParamSet = publicKeyParamSet;
            this.digestParamSet = digestParamSet;
            this.encryptionParamSet = encryptionParamSet;
        }

    public Gost3410PublicKeyAlgParameters(
            Asn1Sequence seq)
        {
            this.publicKeyParamSet = (DerObjectIdentifier) seq[0];
            this.digestParamSet = (DerObjectIdentifier) seq[1];

      if (seq.Count > 2)
            {
                this.encryptionParamSet = (DerObjectIdentifier) seq[2];
            }
        }

    public DerObjectIdentifier PublicKeyParamSet
    {
      get { return publicKeyParamSet; }
    }

    public DerObjectIdentifier DigestParamSet
    {
      get { return digestParamSet; }
    }

    public DerObjectIdentifier EncryptionParamSet
    {
      get { return encryptionParamSet; }
    }

    public override Asn1Object ToAsn1Object()
        {
            Asn1EncodableVector v = new Asn1EncodableVector(
        publicKeyParamSet, digestParamSet);

      if (encryptionParamSet != null)
            {
                v.Add(encryptionParamSet);
            }

      return new DerSequence(v);
        }
    }
}