contentinfo.java

来自「进行与数字证书相关开发必须的java源码」· Java 代码 · 共 74 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:   ContentInfo.java

package jit.asn1.pkcs.pkcs7;

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

public class ContentInfo
    implements DEREncodable, PKCSObjectIdentifiers
{

    private DERObjectIdentifier contentType;
    private DEREncodable content;

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

    public ContentInfo(ASN1Sequence seq)
    {
        contentType = null;
        content = null;
        Enumeration e = seq.getObjects();
        contentType = (DERObjectIdentifier)e.nextElement();
        if(e.hasMoreElements())
            content = ((DERTaggedObject)e.nextElement()).getObject();
    }

    public ContentInfo(DERObjectIdentifier contentType)
    {
        this.contentType = null;
        content = null;
        this.contentType = contentType;
        content = null;
    }

    public ContentInfo(DERObjectIdentifier contentType, DEREncodable content)
    {
        this.contentType = null;
        this.content = null;
        this.contentType = contentType;
        this.content = content;
    }

    public DERObjectIdentifier getContentType()
    {
        return contentType;
    }

    public DEREncodable getContent()
    {
        return content;
    }

    public DERObject getDERObject()
    {
        ASN1EncodableVector v = new ASN1EncodableVector();
        v.add(contentType);
        if(content != null)
            v.add(new BERTaggedObject(0, content));
        return new BERSequence(v);
    }
}