basicconstraints.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:   BasicConstraints.java

package jit.asn1.x509;

import jit.asn1.*;
import jit.math.BigInteger;

public class BasicConstraints
    implements DEREncodable
{

    DERBoolean cA;
    DERInteger pathLenConstraint;

    public static BasicConstraints getInstance(ASN1TaggedObject obj, boolean explicit)
    {
        return getInstance(ASN1Sequence.getInstance(obj, explicit));
    }

    public static BasicConstraints getInstance(Object obj)
    {
        if(obj == null || (obj instanceof BasicConstraints))
            return (BasicConstraints)obj;
        if(obj instanceof ASN1Sequence)
            return new BasicConstraints((ASN1Sequence)obj);
        else
            throw new IllegalArgumentException("unknown object in factory");
    }

    public BasicConstraints(ASN1Sequence seq)
    {
        cA = new DERBoolean(false);
        pathLenConstraint = null;
        cA = (DERBoolean)seq.getObjectAt(0);
        if(seq.size() > 1)
            pathLenConstraint = (DERInteger)seq.getObjectAt(1);
    }

    public BasicConstraints(boolean cA, int pathLenConstraint)
    {
        this.cA = new DERBoolean(false);
        this.pathLenConstraint = null;
        this.cA = new DERBoolean(cA);
        this.pathLenConstraint = new DERInteger(pathLenConstraint);
    }

    public BasicConstraints(boolean cA)
    {
        this.cA = new DERBoolean(false);
        pathLenConstraint = null;
        this.cA = new DERBoolean(cA);
        pathLenConstraint = null;
    }

    public boolean isCA()
    {
        return cA.isTrue();
    }

    public BigInteger getPathLenConstraint()
    {
        if(pathLenConstraint != null)
            return pathLenConstraint.getValue();
        else
            return null;
    }

    public DERObject getDERObject()
    {
        ASN1EncodableVector v = new ASN1EncodableVector();
        v.add(cA);
        if(pathLenConstraint != null)
            v.add(pathLenConstraint);
        return new DERSequence(v);
    }

    public String toString()
    {
        return String.valueOf(String.valueOf((new StringBuffer("BasicConstraints: isCa(")).append(isCA()).append("), pathLenConstraint = ").append(pathLenConstraint.getValue())));
    }
}