deruniversalstring.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:   DERUniversalString.java

package jit.asn1;

import java.io.IOException;

// Referenced classes of package jit.asn1:
//            DERObject, ASN1OctetString, DERString, ASN1TaggedObject, 
//            DEROutputStream

public class DERUniversalString extends DERObject
    implements DERString
{

    byte string[];
    char table[] = {
        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 
        'a', 'b', 'c', 'd', 'e', 'f'
    };

    public static DERUniversalString getInstance(Object obj)
    {
        if(obj == null || (obj instanceof DERUniversalString))
            return (DERUniversalString)obj;
        if(obj instanceof ASN1OctetString)
            return new DERUniversalString(((ASN1OctetString)obj).getOctets());
        else
            throw new IllegalArgumentException("illegal object in getInstance: ".concat(String.valueOf(String.valueOf(obj.getClass().getName()))));
    }

    public static DERUniversalString getInstance(ASN1TaggedObject obj, boolean explicit)
    {
        return getInstance(obj.getObject());
    }

    public DERUniversalString(byte string[])
    {
        this.string = string;
    }

    public String getString()
    {
        StringBuffer buf = new StringBuffer();
        for(int i = 0; i != string.length; i++)
        {
            buf.append(table[(string[i] >>> 4) % 15]);
            buf.append(table[string[i] & 0xf]);
        }

        return buf.toString();
    }

    public byte[] getOctets()
    {
        return string;
    }

    void encode(DEROutputStream out)
        throws IOException
    {
        out.writeEncoded(28, getOctets());
    }

    public boolean equals(Object o)
    {
        if(o == null || !(o instanceof DERUniversalString))
            return false;
        else
            return getString().equals(((DERUniversalString)o).getString());
    }
}