init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/CryptoPro/Gost3410ParamSetParameters.cs

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+using System;
+using Org.BouncyCastle.Math;
+using Org.BouncyCastle.Utilities;
+
+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;
+		}
+		if (obj is Asn1Sequence)
+		{
+			return new Gost3410ParamSetParameters((Asn1Sequence)obj);
+		}
+		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]).Value.IntValue;
+		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);
+	}
+}