<?php
namespace common\pay\chuanghui;

class PayUtils
{


    /** 
     * @param array $data
     * @return string 
     */
    public static function makeSign($data, $privateKey)
    {
        $str = "";
        ksort($data);
        foreach ($data as $key => $value) {
            $str .= "{$value}";
        }
        $rsa = openssl_pkey_get_private(file_get_contents( $privateKey));              
        if (empty($rsa))
        {
            echo "private key resource identifier False!";
            return False;
        }
        openssl_sign($str, $sign, $rsa,OPENSSL_ALGO_MD5);
        $sign = base64_encode($sign);
        return $sign;
    }


    /**
     * @param array $data
     * @param $pubCert
     * @return bool|int
     */
    public static function verify($data, $pubCert)
    {
        // 签名
        if (!isset($data['sign']) || trim($data['sign']) === '') {
            return false;
        }
		$sign = $data['sign'];
        unset($data['sign']);
		ksort($data);   
		$temp =  '';
		foreach($data as $key=>$value)
		{
			$temp .="{$value}";
		}	
        $pubKey = openssl_get_publickey(file_get_contents($pubCert));
		return openssl_verify($temp, base64_decode($sign), $pubKey, OPENSSL_ALGO_MD5);
   
    }


}