Fix port usage and always try to add the generated key

[dumload.git] / src / com / jcraft / jsch / jce / HMACMD596.java

/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
/*
Copyright (c) 2002-2010 ymnk, JCraft,Inc. All rights reserved.

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package com.jcraft.jsch.jce;

import com.jcraft.jsch.MAC;
import javax.crypto.*;
import javax.crypto.spec.*;

public class HMACMD596 implements MAC{
  private static final String name="hmac-md5-96";
  private static final int bsize=12;
  private Mac mac;
  public int getBlockSize(){return bsize;};
  public void init(byte[] key) throws Exception{
    if(key.length>16){
      byte[] tmp=new byte[16];
      System.arraycopy(key, 0, tmp, 0, 16);	  
      key=tmp;
    }
    SecretKeySpec skey=new SecretKeySpec(key, "HmacMD5");
    mac=Mac.getInstance("HmacMD5");
    mac.init(skey);
  } 
  private final byte[] tmp=new byte[4];
  public void update(int i){
    tmp[0]=(byte)(i>>>24);
    tmp[1]=(byte)(i>>>16);
    tmp[2]=(byte)(i>>>8);
    tmp[3]=(byte)i;
    update(tmp, 0, 4);
  }

  public void update(byte foo[], int s, int l){
    mac.update(foo, s, l);      
  }

  private final byte[] _buf16=new byte[16];
  public void doFinal(byte[] buf, int offset){
    try{
      mac.doFinal(_buf16, 0);
    }
    catch(ShortBufferException e){
    }
    System.arraycopy(_buf16, 0, buf, 0, 12);
  }

  public String getName(){
    return name;
  }
}