62 lines
1.3 KiB
C#
62 lines
1.3 KiB
C#
using System;
|
|
using Org.BouncyCastle.Math;
|
|
using Org.BouncyCastle.Utilities;
|
|
|
|
namespace Org.BouncyCastle.Asn1.X509;
|
|
|
|
public class DsaParameter : Asn1Encodable
|
|
{
|
|
internal readonly DerInteger p;
|
|
|
|
internal readonly DerInteger q;
|
|
|
|
internal readonly DerInteger g;
|
|
|
|
public BigInteger P => p.PositiveValue;
|
|
|
|
public BigInteger Q => q.PositiveValue;
|
|
|
|
public BigInteger G => g.PositiveValue;
|
|
|
|
public static DsaParameter GetInstance(Asn1TaggedObject obj, bool explicitly)
|
|
{
|
|
return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
|
|
}
|
|
|
|
public static DsaParameter GetInstance(object obj)
|
|
{
|
|
if (obj == null || obj is DsaParameter)
|
|
{
|
|
return (DsaParameter)obj;
|
|
}
|
|
if (obj is Asn1Sequence)
|
|
{
|
|
return new DsaParameter((Asn1Sequence)obj);
|
|
}
|
|
throw new ArgumentException("Invalid DsaParameter: " + Platform.GetTypeName(obj));
|
|
}
|
|
|
|
public DsaParameter(BigInteger p, BigInteger q, BigInteger g)
|
|
{
|
|
this.p = new DerInteger(p);
|
|
this.q = new DerInteger(q);
|
|
this.g = new DerInteger(g);
|
|
}
|
|
|
|
private DsaParameter(Asn1Sequence seq)
|
|
{
|
|
if (seq.Count != 3)
|
|
{
|
|
throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
|
|
}
|
|
p = DerInteger.GetInstance(seq[0]);
|
|
q = DerInteger.GetInstance(seq[1]);
|
|
g = DerInteger.GetInstance(seq[2]);
|
|
}
|
|
|
|
public override Asn1Object ToAsn1Object()
|
|
{
|
|
return new DerSequence(p, q, g);
|
|
}
|
|
}
|