encryptini.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:   EncryptINI.java

package jit.util.jitca.ini;

import java.io.ByteArrayInputStream;
import jit.asn1parser.Parser;
import jit.crypto.CipherParameters;
import jit.jcrypto.*;
import jit.jcrypto.soft.JMechanism;
import jit.util.encoders.Base64;

// Referenced classes of package jit.util.jitca.ini:
//            ProFile

public class EncryptINI
{

    static final Mechanism mechanism = new JMechanism(289);

    public EncryptINI()
    {
    }

    public static byte[] getValue(Session session, ProFile proFile, String section, String key, JKey decryptKey)
        throws Exception
    {
        String value = proFile.getValue(section, key);
        if(key.charAt(0) != '!' || decryptKey == null)
        {
            return Base64.decode(value);
        } else
        {
            byte en_data[] = Base64.decode(value);
            byte de_data[] = session.decrypt(mechanism, decryptKey, en_data);
            return de_data;
        }
    }

    public static void setValue(Session session, ProFile proFile, String section, String key, byte value[], JKey encryptKey)
        throws Exception
    {
        String svalue = null;
        if(key.charAt(0) != '!' || encryptKey == null)
        {
            svalue = new String(Base64.encode(value));
        } else
        {
            CipherParameters param = Parser.conver2CipherParam(encryptKey);
            byte en_data[] = session.encrypt(mechanism, encryptKey, value);
            svalue = new String(Base64.encode(en_data));
        }
        proFile.storeValue(section, key, format(key, svalue, 80));
    }

    public static String format(String head, String source, int length)
        throws Exception
    {
        if(head.length() + source.length() + 1 < length)
            return source;
        ByteArrayInputStream bis = new ByteArrayInputStream(source.getBytes());
        StringBuffer buffer = new StringBuffer();
        byte line1[] = new byte[length - head.length() - 1];
        bis.read(line1);
        buffer.append(new String(line1));
        int readLen = -1;
        do
        {
            byte tmpLine[] = new byte[length - 2];
            readLen = bis.read(tmpLine);
            buffer.append("\n->");
            buffer.append((new String(tmpLine)).trim());
        } while(readLen >= length - 2);
        return buffer.toString();
    }

}