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                ## 簽名算法 簽名生成的通用步驟如下: 第一步,設所有發送或者接收到的數據為集合M,將集合M內的參數按照參數名ASCII碼從小到大排序(字典序),使用URL鍵值對的格式(即key1=value1&key2=value2…)拼接成字符串 stringA。 第二步,在stringA最后拼接上key得到stringSign字符串,并對stringSign進行MD5運算,再將得到的字符串所有字符轉換為大寫。 **交易提交時簽名Demo( php代碼示例,其它編程語言僅做參考 )** ```php <?php $ArrayField = [ 'version' => '1.0.0', 'memberid' => '10001', 'orderid' => "1000120200202202020", 'amount' => '100', 'orderdatetime' => "", 'notifyurl' => 'http://xxx.xxx.com/notifyurl.php', 'paytype' => 'WXGZH', 'signmethod' => 'md5', ]; ksort($ArrayField); //按照參數名ASCII碼從小到大排序 $md5key = '2JXQBG13TAUNKRYVME'; //md5密鑰 $stringA = ""; foreach($ArrayField as $key => $value){ $stringA .= $key."=".$value."&"; } $stringA = substr($stringA,0,-1); //去掉最后一個 & 字符 $ArrayField["sign"] = strtoupper(md5($stringA.$md5key)); //拼接密鑰后,md5加密后轉為大寫 ?> ``` **交易回調時簽名Demo( php代碼示例,其它編程語言僅做參考 )** > 回調里的所有參數,只要存在,不論值是否為空都要參與簽名 ```php <?php $ArrayField = $_POST; $sign = $ArrayField["sign"]; unset($ArrayField["sign"]); $md5key = '2JXQBG13TAUNKRYVME'; //密鑰 ksort($ArrayField); //按照參數名ASCII碼從小到大排序 $stringA = ""; foreach($ArrayField as $key => $value){ $stringA .= $key."=".$value."&"; } $stringA = substr($stringA,0,-1); //去掉最后一個 & 字符 $signValue = strtoupper(md5($stringA.$md5key)); //拼接密鑰后,md5加密后轉為大寫 ?> ``` **查詢提交時簽名Demo( php代碼示例,其它編程語言僅做參考 )** ```php $ArrayField = [ 'version' => '1.0.0', //固定值 'memberid' => '10001', //商戶編號 'orderid' => "2020022637021582687627", //要查詢的訂單號 'notifyurl' => 'http://xxx.xxx.com/notifyurl.php', 'signmethod' => 'md5', //加密方式 固定值 ]; ksort($ArrayField); //按照參數名ASCII碼從小到大排序 $md5key = '2JXQBG13TAUNKRYVME'; //md5密鑰 $stringA = ""; foreach($ArrayField as $key => $value){ $stringA .= $key."=".$value."&"; } $stringA = substr($stringA,0,-1); //去掉最后一個 & 字符 $ArrayField["sign"] = strtoupper(md5($stringA.$md5key)); //拼接密鑰后,md5加密后轉為大寫 ``` **查詢響應/回調時簽名Demo( php代碼示例,其它編程語言僅做參考 )** > 回調里的所有參數,只要存在,不論值是否為空都要參與簽名 ```php <?php $ArrayField = $_POST; //查詢回調時獲取回調參數 // $json = 響應回的JSON字符串 ; // $ArrayField = json_decode($json,true) //查詢響應時獲取回調參數, json字符串轉換為數組 $sign = $ArrayField["sign"]; unset($ArrayField["sign"]); $md5key = '2JXQBG13TAUNKRYVME'; //密鑰 ksort($ArrayField); //按照參數名ASCII碼從小到大排序 $stringA = ""; foreach($ArrayField as $key => $value){ $stringA .= $key."=".$value."&"; } $stringA = substr($stringA,0,-1); //去掉最后一個 & 字符 $signValue = strtoupper(md5($stringA.$md5key)); //拼接密鑰后,md5加密后轉為大寫 ?> ```
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