You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
78 lines
1.7 KiB
78 lines
1.7 KiB
using System;
|
|
using System.Collections;
|
|
|
|
using Org.BouncyCastle.Math;
|
|
using Org.BouncyCastle.Utilities;
|
|
|
|
namespace Org.BouncyCastle.Asn1.X509
|
|
{
|
|
public class DsaParameter
|
|
: Asn1Encodable
|
|
{
|
|
internal readonly DerInteger p, q, g;
|
|
|
|
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");
|
|
|
|
this.p = DerInteger.GetInstance(seq[0]);
|
|
this.q = DerInteger.GetInstance(seq[1]);
|
|
this.g = DerInteger.GetInstance(seq[2]);
|
|
}
|
|
|
|
public BigInteger P
|
|
{
|
|
get { return p.PositiveValue; }
|
|
}
|
|
|
|
public BigInteger Q
|
|
{
|
|
get { return q.PositiveValue; }
|
|
}
|
|
|
|
public BigInteger G
|
|
{
|
|
get { return g.PositiveValue; }
|
|
}
|
|
|
|
public override Asn1Object ToAsn1Object()
|
|
{
|
|
return new DerSequence(p, q, g);
|
|
}
|
|
}
|
|
}
|
|
|