Gost3410ParamSetParameters
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Utilities;
using System;
namespace Org.BouncyCastle.Asn1.CryptoPro
{
public class Gost3410ParamSetParameters : Asn1Encodable
{
private readonly int keySize;
private readonly DerInteger p;
private readonly DerInteger q;
private readonly DerInteger a;
public int KeySize => keySize;
public BigInteger P => p.PositiveValue;
public BigInteger Q => q.PositiveValue;
public BigInteger A => a.PositiveValue;
public static Gost3410ParamSetParameters GetInstance(Asn1TaggedObject obj, bool explicitly)
{
return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
}
public static Gost3410ParamSetParameters GetInstance(object obj)
{
if (obj == null || obj is Gost3410ParamSetParameters)
return (Gost3410ParamSetParameters)obj;
Asn1Sequence asn1Sequence = obj as Asn1Sequence;
if (asn1Sequence != null)
return new Gost3410ParamSetParameters(asn1Sequence);
throw new ArgumentException("Invalid GOST3410Parameter: " + Platform.GetTypeName(obj));
}
public Gost3410ParamSetParameters(int keySize, BigInteger p, BigInteger q, BigInteger a)
{
this.keySize = keySize;
this.p = new DerInteger(p);
this.q = new DerInteger(q);
this.a = new DerInteger(a);
}
private Gost3410ParamSetParameters(Asn1Sequence seq)
{
if (seq.Count != 4)
throw new ArgumentException("Wrong number of elements in sequence", "seq");
keySize = DerInteger.GetInstance(seq[0]).IntValueExact;
p = DerInteger.GetInstance(seq[1]);
q = DerInteger.GetInstance(seq[2]);
a = DerInteger.GetInstance(seq[3]);
}
public override Asn1Object ToAsn1Object()
{
return new DerSequence(new DerInteger(keySize), p, q, a);
}
}
}