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using System;
using System.Collections;
using Org.BouncyCastle.Asn1;
namespace Org.BouncyCastle.Asn1.CryptoPro
{
public class Gost28147Parameters
: Asn1Encodable
{
private readonly Asn1OctetString iv;
private readonly DerObjectIdentifier paramSet;
public static Gost28147Parameters GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
}
public static Gost28147Parameters GetInstance(
object obj)
{
if (obj == null || obj is Gost28147Parameters)
{
return (Gost28147Parameters) obj;
}
if (obj is Asn1Sequence)
{
return new Gost28147Parameters((Asn1Sequence) obj);
}
throw new ArgumentException("Invalid GOST3410Parameter: " + obj.GetType().Name);
}
private Gost28147Parameters(
Asn1Sequence seq)
{
if (seq.Count != 2)
throw new ArgumentException("Wrong number of elements in sequence", "seq");
this.iv = Asn1OctetString.GetInstance(seq[0]);
this.paramSet = DerObjectIdentifier.GetInstance(seq[1]);
}
/**
* <pre>
* Gost28147-89-Parameters ::=
* SEQUENCE {
* iv Gost28147-89-IV,
* encryptionParamSet OBJECT IDENTIFIER
* }
*
* Gost28147-89-IV ::= OCTET STRING (SIZE (8))
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
return new DerSequence(iv, paramSet);
}
}
}
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