98 lines
2.6 KiB
PHP
98 lines
2.6 KiB
PHP
<?php
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class PayService
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{
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private $sign_type = 'RSA';
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private $version = '11';
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private $cusid;
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private $appid;
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private $platform_public_key;
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private $merchant_private_key;
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public function __construct($cusid, $appid, $platform_public_key, $merchant_private_key)
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{
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$this->cusid = $cusid;
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$this->appid = $appid;
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$this->platform_public_key = $platform_public_key;
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$this->merchant_private_key = $merchant_private_key;
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}
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//发起API请求
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public function submit($requrl, $params){
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$public_params = [
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'cusid' => $this->cusid,
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'appid' => $this->appid,
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'version' => $this->version,
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'signtype' => $this->sign_type,
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];
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$params = array_merge($public_params, $params);
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$params['sign'] = $this->generateSign($params);
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$response = get_curl($requrl, http_build_query($params));
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$result = json_decode($response, true);
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if(isset($result['retcode']) && $result['retcode']=='SUCCESS'){
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return $result;
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}elseif(isset($result['retmsg'])){
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throw new Exception($result['retmsg']);
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}else{
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throw new Exception('返回数据解析失败');
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}
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}
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//获取待签名字符串
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private function getSignContent($param){
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ksort($param);
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$signstr = '';
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foreach($param as $k => $v){
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if($k != "sign" && $v!=''){
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$signstr .= $k.'='.$v.'&';
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}
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}
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$signstr = substr($signstr,0,-1);
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return $signstr;
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}
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//请求参数签名
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private function generateSign($param){
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return $this->rsaPrivateSign($this->getSignContent($param));
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}
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//验签方法
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public function verifySign($param){
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if(empty($param['sign'])) return false;
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return $this->rsaPubilcSign($this->getSignContent($param), $param['sign']);
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}
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//商户私钥签名
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private function rsaPrivateSign($data){
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$priKey = $this->merchant_private_key;
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$res = "-----BEGIN RSA PRIVATE KEY-----\n" .
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wordwrap($priKey, 64, "\n", true) .
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"\n-----END RSA PRIVATE KEY-----";
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$pkeyid = openssl_pkey_get_private($res);
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if(!$pkeyid){
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throw new Exception('签名失败，商户私钥不正确');
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}
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openssl_sign($data, $signature, $pkeyid);
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$signature = base64_encode($signature);
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return $signature;
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}
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//平台公钥验签
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private function rsaPubilcSign($data, $signature){
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$pubKey = $this->platform_public_key;
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$res = "-----BEGIN PUBLIC KEY-----\n" .
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wordwrap($pubKey, 64, "\n", true) .
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"\n-----END PUBLIC KEY-----";
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$pubkeyid = openssl_pkey_get_public($res);
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if(!$pubkeyid){
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throw new Exception('验签失败，平台公钥不正确');
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}
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$result = openssl_verify($data, base64_decode($signature), $pubkeyid);
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return $result;
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}
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} |