confalg.java

进行与数字证书相关开发必须的java源码

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 
// Source File Name:   ConfAlg.java

package jit.asn1.spkm;

import jit.asn1.*;
import jit.asn1.x509.AlgorithmIdentifier;

public class ConfAlg
    implements DEREncodable
{

    private DEREncodable obj;
    int tag;

    public ConfAlg(int tag, DEREncodable obj)
    {
        this.obj = null;
        this.tag = -1;
        this.tag = tag;
        this.obj = obj;
    }

    public int getTagNo()
    {
        return tag;
    }

    public AlgorithmIdentifier getAlgID()
    {
        if(tag == 0)
            return AlgorithmIdentifier.getInstance(obj);
        else
            return null;
    }

    public ASN1Null getNull()
    {
        if(tag == 1)
            return new DERNull();
        else
            return null;
    }

    public static ConfAlg getInstance(Object obj)
    {
        if(obj instanceof ConfAlg)
            return (ConfAlg)obj;
        if(obj instanceof ASN1TaggedObject)
        {
            ASN1TaggedObject tagObj = (ASN1TaggedObject)obj;
            int tagNo = tagObj.getTagNo();
            switch(tagNo)
            {
            case 0: // '\0'
                return new ConfAlg(tagNo, AlgorithmIdentifier.getInstance(tagObj, true));

            case 1: // '\001'
                return new ConfAlg(tagNo, new DERNull());
            }
        }
        throw new IllegalArgumentException("unknown object in getInstance".concat(String.valueOf(String.valueOf(obj.getClass().getName()))));
    }

    public static ConfAlg getInstance(ASN1TaggedObject tagObj, boolean explicit)
    {
        return getInstance(ASN1TaggedObject.getInstance(tagObj, explicit));
    }

    public DERObject getDERObject()
    {
        return new DERTaggedObject(tag, obj);
    }
}