记IBM JDK1.7 兼容 SUN JDK AES 解密

开发环境: SUN JDK  1.7

生产环境: IBM JDK   1.7

问题出现原因:

        接收第三方系统AES加密内容,使用IBM JDK解密的时候,报Given final block not properly padded

	//注册SUN Provider 进行解密
    sun.security.provider.Sun sunProvider = new sun.security.provider.Sun();

    //注册SHA1PRNG 算法,否则报no such algorithm: SHA1PRNG for provider SUN
    sunProvider.put("SecureRandom.SHA1PRNG", "sun.security.provider.SecureRandom");
	Security.addProvider(sunProvider);



    //进行解密调用
    KeyGenerator kgen = KeyGenerator.getInstance("AES");
   
   //使用SUN 进行解密算法
    SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG","SUN");
    System.out.println(secureRandom.getProvider());
     
   // 防止linux下 随机生成key              
   secureRandom.setSeed(password.getBytes("UTF-8"));
   kgen.init(128, secureRandom);
   SecretKey secretKey = kgen.generateKey();
   byte[] enCodeFormat = secretKey.getEncoded();
   SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
   Cipher cipher = Cipher.getInstance("AES");// 创建密码器
   cipher.init(Cipher.DECRYPT_MODE, key);// 初始化
   byte[] result = cipher.doFinal(content);
    
    


    

//IBM JDK 1.7

将sun.security.provider.SunEntries.putEntries(Map<Object, Object>) 加密算法全部注释掉了

导致必须手动去注册SHA1PRNG算法.


//SUN JDK 1.7
楼主的解决办法是,直接去SUN JDK 
sun.security.provider.SunEntries.putEntries(Map<Object, Object>)方法中,找到对应的加密算法,手动注册即可:
sunProvider.put("SecureRandom.SHA1PRNG", "sun.security.provider.SecureRandom");

目前测试下来,只有IBM JKD 1.7 会存在该问题,IBM JDK 1.8 不存在该问题,可以直接使用

标签：AES,IBM,JDK,SUN,provider,sun,security,SecureRandom
来源： https://blog.csdn.net/kemoing/article/details/122602952