zoumaliveServer/system/payment/Hqpay/Hqpay.php

<?php
// 使用私钥加密
class Hqpay
{
    private $pi_key;
    private $pu_key;
    private $uid;
    private $key;
    public function __construct($merchantID,$platpkey){
        $cfg = require APP_ROOT_PATH."system/payment/Hqpay/config.php";
        $this->pi_key = $cfg['private_key'];
        $this->pu_key = openssl_pkey_get_public($cfg['public_key']);;
        $this->uid = $merchantID;
        $this->key = $platpkey;
    }

    public function privateEncrypt($data)
    {
        openssl_private_encrypt($data, $encrypted, $this->pi_key);
        return base64_encode($encrypted);
    }

    // 使用公钥解密
    public function publicDecrypt($encrypted)
    {
        openssl_public_decrypt($encrypted, $decrypted, $this->pu_key);
        return $decrypted;
    }

    /**
     * RSA验签
     * @param $data 待签名数据
     * @param $sign 要校对的的签名结果
     * return 验证结果
     */
    public function rsaVerify($data, $sign)  {

        $pubkey = $this->pu_key;
        $res = openssl_get_publickey($pubkey);

        $result = (bool)openssl_verify($data, base64_decode($sign), $res);
        openssl_free_key($res);
        return $result;
    }

    /**
     * RSA解密
     * @param $str 需要解密的内容，密文
     * @param $private_key_path 商户私钥文件路径
     * return 解密后内容，明文
     */
    public function rsaDecrypt($str) {
        $str = str_replace('_', "+", $str);
        $str = base64_decode($str);
        // 按128位使用平台公钥分段进行解密
        $index = 128;
        $indexx = 0;
        $string = '';
        $strlen = strlen($str);
        $step = $strlen / $index;
        $decrypted = array();
        for ($i = 0; $i < $step; $i ++) {
            $strr = substr($str, $indexx, $index);
            $indexx += $index;
            $decrypted[] .= $this->publicDecrypt($strr);
        }
        return implode('',$decrypted);
    }
}