json格式数据加密问题
求助，服务器这边通过php 返回的json串给手机客户端这边，在数据传递过程中 json数据需要加密。到底怎么来加密呢？不会就直接加密json串吧 这样肯定不行。
------解决方案--------------------
两边约定密钥，根据密钥加解密。
------解决方案--------------------
简单点，直接写死就行了。
json_encode得到字符串，对字符串加的偶数字节加噪声（比如异或某个1-127的整数），之后使用和客户端约定好的对称密钥解密就行了，对称密钥写死在服务端和客户端，免得让人不法人士看到。
要安全的话很明显客户端应该走Https 443端口请求这个json串，而不是你在应用层自己加密数据。
------解决方案--------------------
那你可以对加完密的数据字串进行二次处理，如加减乘除……，选取指定字符进行运算
------解决方案--------------------
两方约定密钥，Des加密可以，PHp加密，对端使用密码进行Des解密就搞定了
密文体直接用json串
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