API权限设计总结
加密方式 md5(POST参数(升序排序,除key sign参数除外) + 用户密钥)
PHP加密算法代码:
[php]
foreach ($p as $v) {
$temp = explode("=", $v);
$pArr[$temp[0]] = $temp[1];
}
ksort($pArr);
foreach ($pArr as $k => $v) {
$pStr2 .= $k . $v ;
}
md5($pStr2 . $secret)
注意:加密的时候,需要将timestamp带上,防止客户端篡改。
客户端,将自己需要传递的参数进行升序排序,然后加上自己key对应的密钥(密钥在服务端数据库中有一份保存,这个是不能对外公开的)进行MD5加密,通过参数sign传递到服务端。
服务端拿到sign值后,对传递过来的参数也进行同样的算法排序,并经过用户的key查询得到密钥,然后进行一次加密算法,得到的服务端的sign和客户端传递过来的sign进行比较,如果相同则表示是可以通过的,如果中途有人篡改数据等,那么最终加密出来的sign就是不一致的,这样保证了用户传递数据的可靠性和安全性。

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