php-app开发接口加密详解

自己平时工作中用到的一套接口加密规则，记录下来以后用：

$xpp_key = "xxx";

//接收参数param,将结果解析json得到参数数组
$param = json_decode($_POST['param'],true);

//取出sign,去掉参数数组中的sign
$client_sign = $param['sign'];
unset($param['sign']);

//将参数数组key值按照自然排序从大到小排序
krsort($param);

//将排序后的参数数组按照key=val&key=val的形式组成字符串，将字符串与XPP_KEY连接，用md5加密一次(32位小写)，得到sign
$sb = '';
foreach($param as $key=>$val){
$sb .= $key . '=' . $val . '&';
}
$sb .= $xpp_key;
$server_sign = md5($sb);

//将sign与客户端传过来的sign进行比对,如不一样则可能是中途被篡改参数，服务器拒绝此次请求
if($server_sign !== $client_sign){
echo json_encode(array('code'=>'invalid request'));
exit;
}

//将sign与session中的sign对比，如果一样，则为重复提交，服务器拒绝此次请求
if($server_sign == $_SESSION['last_sign']){
echo json_encode(array('code'=>'Repeated requests'));
exit();
}

//此次的sign存入session
$_SESSION['last_sign'] = $server_sign;

//执行路由cmd(base64解析后),将参数带到该方法中
$cmd = base64_decode($param['cmd']);
list($controller,$action) = explode('-',$cmd);

// 设置请求参数
unset($param['cmd']);
unset($param['timestamp']);
foreach($param as $key => $val){
$_REQUEST[$key] = $val;
}

客户端代码demo：

rush:java;"> package com.xpplove.newxpp.activity; import java.util.HashMap; import java.util.Iterator; import java.util.Map; import java.util.TreeMap; import org.apache.commons.codec.binary.Base64; import android.os.Bundle; import com.alibaba.fastjson.JSON; import com.xpplove.newxpp.BaseActivity; import com.xpplove.newxpp.bean.Params; import com.xpplove.newxpp.net.NetPostTask; import com.xpplove.newxpp.utils.DensityUtil; public class TestActivity extends BaseActivity { private String url = "http://c.lovexpp.com/"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); loadMesage(); } private void loadMesage() { Base64 base64 = new Base64(); Map paramsMap = new HashMap(); paramsMap.put("timestamp",(System.currentTimeMillis() / 1000 + "")); String cmd = new String(base64.encode("user-camList".getBytes())); String dcmd = new String(base64.decode(cmd.getBytes())); paramsMap.put("cmd",cmd); paramsMap.put("sign",getString(paramsMap)); String str = getkeyvalues(paramsMap); paramsMap = new HashMap(); paramsMap.put("param",str); Params params = new Params(); params.listener = this; params.url = url; //new NetWorkTask().executeProxy(params); new NetPostTask(paramsMap).executeProxy(params); } @Override public void onGetResult(int errorCode,Object result) { super.onGetResult(errorCode,result); System.out.println(); } private String getString(Map paramsMap) { TreeMap tm = new TreeMap(paramsMap); Iterator i = tm.descendingMap().entrySet().iterator(); StringBuffer buffer = new StringBuffer(); while (i.hasNext()) { buffer.append(i.next() + "&"); } buffer.append(AppKey); return DensityUtil.MD5(buffer.toString()); } // 得到键值对 private String getkeyvalues(Map paramsMap) { TreeMap tm = new TreeMap(paramsMap); Iterator i = tm.descendingKeySet().iterator(); String jsonText = JSON.toJSONString(tm.descendingMap(),true); return jsonText; } }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程之家。