digestinfo.java

来自「进行与数字证书相关开发必须的java源码」· Java 代码 · 共 67 行

// 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:   DigestInfo.java

package jit.asn1.x509;

import java.util.Enumeration;
import jit.asn1.*;

// Referenced classes of package jit.asn1.x509:
//            AlgorithmIdentifier

public class DigestInfo
    implements DEREncodable
{

    private byte digest[];
    private AlgorithmIdentifier algId;

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

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

    public DigestInfo(AlgorithmIdentifier algId, byte digest[])
    {
        this.digest = digest;
        this.algId = algId;
    }

    public DigestInfo(ASN1Sequence obj)
    {
        Enumeration e = obj.getObjects();
        algId = AlgorithmIdentifier.getInstance(e.nextElement());
        digest = ((ASN1OctetString)e.nextElement()).getOctets();
    }

    public AlgorithmIdentifier getAlgorithmId()
    {
        return algId;
    }

    public byte[] getDigest()
    {
        return digest;
    }

    public DERObject getDERObject()
    {
        ASN1EncodableVector v = new ASN1EncodableVector();
        v.add(algId);
        v.add(new DEROctetString(digest));
        return new DERSequence(v);
    }
}