php对接java现实加签验签

-----BEGIN PUBLIC KEY-----
//64chars一行(多行)
-----END PUBLIC KEY-----
-----BEGIN RSA PRIVATE KEY-----
//64chars一行(多行)
-----END RSA PRIVATE KEY-----

/**
 * 将字符串格式公私钥格式化为pem格式公私钥
 * @param $secret_key
 * @param $type
 * @return string
 */
public static function format_secret_key($secret_key, $type){
    //64个英文字符后接换行符"\n",最后再接换行符"\n"
    $key = (wordwrap($secret_key, 64, "\n", true))."\n";
    //添加pem格式头和尾
    if ($type == 'pub') {
        $pem_key = "-----BEGIN PUBLIC KEY-----\n" . $key . "-----END PUBLIC KEY-----\n";
    }else if ($type == 'pri') {
        $pem_key = "-----BEGIN RSA PRIVATE KEY-----\n" . $key . "-----END RSA PRIVATE KEY-----\n";
    }else{
        echo('公私钥类型非法');
        exit();
    }
    return $pem_key;
}

/**
 * RSA加签
 * @param $paramStr
 * @param $priKey
 * @return string
 */
public static function sign($paramStr, $priKey){
    $sign = '';
    //将字符串格式公私钥转为pem格式公私钥
    $priKeyPem = SignUtil::format_secret_key($priKey, 'pri');
    //转换为openssl密钥，必须是没有经过pkcs8转换的私钥
    $res = openssl_get_privatekey($priKeyPem);
    //调用openssl内置签名方法，生成签名$sign
    openssl_sign($paramStr, $sign, $res);
    //释放资源
    openssl_free_key($res);
    //base64编码签名
    $signBase64 = base64_encode($sign);
    //url编码签名
    $sign = urlencode($signBase64);
    return $sign;
}

/**
 * RSA验签
 * @param $paramStr
 * @param $sign
 * @param $pubKey
 * @return bool
 */
public static function verify($paramStr, $sign, $pubKey)  {
    //将字符串格式公私钥转为pem格式公私钥
    $pubKeyPem = SignUtil::format_secret_key($pubKey, 'pub');
    //转换为openssl密钥，必须是没有经过pkcs8转换的公钥
    $res = openssl_get_publickey($pubKeyPem);
    //url解码签名
    $signUrl = urldecode($sign);
    //base64解码签名
    $signBase64 = base64_decode($signUrl);
    //调用openssl内置方法验签，返回bool值
    $result = (bool)openssl_verify($paramStr, $signBase64, $res);
    //释放资源
    openssl_free_key($res);
    //返回资源是否成功
    return $result;
}