asn1set.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:   ASN1Set.java

package jit.asn1;

import java.io.IOException;
import java.util.Enumeration;
import java.util.Vector;

// Referenced classes of package jit.asn1:
//            DERObject, DERSet, ASN1EncodableVector, ASN1Sequence, 
//            DEREncodable, ASN1TaggedObject, DEROutputStream

public abstract class ASN1Set extends DERObject
{

    protected Vector set;

    public static ASN1Set getInstance(Object obj)
    {
        if(obj == null || (obj instanceof ASN1Set))
            return (ASN1Set)obj;
        else
            throw new IllegalArgumentException("unknown object in getInstance");
    }

    public static ASN1Set getInstance(ASN1TaggedObject obj, boolean explicit)
    {
        if(explicit)
            if(!obj.isExplicit())
                throw new IllegalArgumentException("object implicit - explicit expected.");
            else
                return (ASN1Set)obj.getObject();
        if(obj.isExplicit())
        {
            ASN1Set set = new DERSet(obj.getObject());
            return set;
        }
        if(obj.getObject() instanceof ASN1Set)
            return (ASN1Set)obj.getObject();
        ASN1EncodableVector v = new ASN1EncodableVector();
        if(obj.getObject() instanceof ASN1Sequence)
        {
            ASN1Sequence s = (ASN1Sequence)obj.getObject();
            for(Enumeration e = s.getObjects(); e.hasMoreElements(); v.add((DEREncodable)e.nextElement()));
            return new DERSet(v);
        } else
        {
            throw new IllegalArgumentException("unknown object in getInstanceFromTagged");
        }
    }

    public ASN1Set()
    {
        set = new Vector();
    }

    public Enumeration getObjects()
    {
        return set.elements();
    }

    public DEREncodable getObjectAt(int index)
    {
        return (DEREncodable)set.elementAt(index);
    }

    public int size()
    {
        return set.size();
    }

    public int hashCode()
    {
        Enumeration e = getObjects();
        int hashCode;
        for(hashCode = 0; e.hasMoreElements(); hashCode ^= e.nextElement().hashCode());
        return hashCode;
    }

    public boolean equals(Object o)
    {
        if(o == null || !(o instanceof ASN1Set))
            return false;
        ASN1Set other = (ASN1Set)o;
        if(size() != other.size())
            return false;
        Enumeration s1 = getObjects();
        Enumeration s2 = other.getObjects();
        while(s1.hasMoreElements()) 
            if(!s1.nextElement().equals(s2.nextElement()))
                return false;
        return true;
    }

    protected void addObject(DEREncodable obj)
    {
        set.addElement(obj);
    }

    abstract void encode(DEROutputStream deroutputstream)
        throws IOException;
}