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using System;
using Org.BouncyCastle.Math;
namespace Org.BouncyCastle.Asn1.CryptoPro
{
public class Gost3410ParamSetParameters
: Asn1Encodable
{
public static Gost3410ParamSetParameters GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is Gost3410ParamSetParameters gost3410ParamSetParameters)
return gost3410ParamSetParameters;
return new Gost3410ParamSetParameters(Asn1Sequence.GetInstance(obj));
}
public static Gost3410ParamSetParameters GetInstance(Asn1TaggedObject obj, bool explicitly) =>
new Gost3410ParamSetParameters(Asn1Sequence.GetInstance(obj, explicitly));
public static Gost3410ParamSetParameters GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit) =>
new Gost3410ParamSetParameters(Asn1Sequence.GetTagged(taggedObject, declaredExplicit));
private readonly int m_keySize;
private readonly DerInteger m_p, m_q, m_a;
private Gost3410ParamSetParameters(Asn1Sequence seq)
{
int count = seq.Count;
if (count != 4)
throw new ArgumentException("Bad sequence size: " + count, nameof(seq));
m_keySize = DerInteger.GetInstance(seq[0]).IntValueExact;
m_p = DerInteger.GetInstance(seq[1]);
m_q = DerInteger.GetInstance(seq[2]);
m_a = DerInteger.GetInstance(seq[3]);
}
public Gost3410ParamSetParameters(int keySize, BigInteger p, BigInteger q, BigInteger a)
{
m_keySize = keySize;
m_p = new DerInteger(p);
m_q = new DerInteger(q);
m_a = new DerInteger(a);
}
public int KeySize => m_keySize;
public BigInteger P => m_p.PositiveValue;
public BigInteger Q => m_q.PositiveValue;
public BigInteger A => m_a.PositiveValue;
public override Asn1Object ToAsn1Object() => new DerSequence(new DerInteger(m_keySize), m_p, m_q, m_a);
}
}
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