183 lines
7.0 KiB
PHP
183 lines
7.0 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | 企油通 · 签名 / 验签 / 请求信封
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// +----------------------------------------------------------------------
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// | 第二阶段 A-1 骨架。标 【TODO 待对接人确认】 处需按企油通实际规则微调。
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// |
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// | 三种签名场景（见《企油通接口对接文档.md》§2.1 / §2.4）：
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// | 1. 业务信封：外层 { appId, timestamp, sign, params(JSON字符串) }
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// | 2. 7.15 H5 免登地址：ksort → http_build_query → urldecode → 大写MD5 → SHA1withRSA → base64
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// | 3. 7.16 / 7.17：必须真实 RSA 验签调用（本质同 1，但企油通侧强校验）
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// +----------------------------------------------------------------------
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declare (strict_types=1);
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namespace app\common\crypto;
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class Qyt
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{
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/** @var string 我方私钥资源 */
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protected $privateKey;
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/** @var string|false 企油通平台公钥资源 */
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protected $platformPublicKey;
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/** @var array config('qyt') */
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protected $conf;
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public function __construct(array $conf = null)
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{
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$this->conf = $conf ?: (array) config('qyt');
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$this->privateKey = $this->loadPrivateKey($this->conf['private_key'] ?? '');
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$this->platformPublicKey = $this->loadPublicKey($this->conf['platform_public_key'] ?? '');
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}
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// ================================================================
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// 1. 业务信封
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// ================================================================
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/**
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* 构建业务请求信封
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* @param array $bizParams 业务参数（会被 json_encode 成字符串放进 params）
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* @return array{appId:string,timestamp:int,sign:string,params:string}
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*/
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public function envelope(array $bizParams): array
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{
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$appId = (string) ($this->conf['app_id'] ?? '');
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$timestamp = time();
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// ⚠️ params 必须是 JSON 字符串（转义），不是对象
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$paramsJson = json_encode($bizParams, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
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$sign = $this->bizSign([
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'appId' => $appId,
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'timestamp' => $timestamp,
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'params' => $paramsJson,
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]);
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return [
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'appId' => $appId,
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'timestamp' => $timestamp,
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'sign' => $sign,
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'params' => $paramsJson,
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];
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}
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/**
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* 业务信封签名
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* 【TODO 待对接人确认】业务接口的具体拼签字段与顺序，文档 §2.4 只给了 7.15 的算法，
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* 业务接口写的是「密钥、公私钥与具体拼签字段请向对接人员索取」。
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* 当前默认实现：对参与字段 ksort 后 http_build_query → urldecode → 大写MD5 → SHA1withRSA → base64
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* （与 7.15 同族算法，落地时按实际规则替换本方法即可，调用方无需改动）
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*
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* @param array $fields 参与签名的字段（appId / timestamp / params）
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*/
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public function bizSign(array $fields): string
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{
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$mode = $this->conf['sign_mode'] ?? 'ksort_md5_sha1rsa';
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switch ($mode) {
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// 预留：'raw_concat_sha256rsa' 等其它模式
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case 'ksort_md5_sha1rsa':
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default:
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return $this->md5Sha1RsaSign($fields);
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}
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}
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// ================================================================
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// 2. 7.15 H5 免登地址
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// ================================================================
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/**
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* 生成司机免登加油 H5 跳转地址（7.15）
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* @param string $mobile 司机手机号
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* @param string $creditcode 企业营业执照号；传空则不带（不参与签名）
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* @return string 完整可跳转 URL
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*/
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public function h5Url(string $mobile, string $creditcode = ''): string
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{
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$base = rtrim((string) ($this->conf['h5_base_url'] ?? ''), '/');
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$appId = (string) ($this->conf['h5_app_id'] ?: $this->conf['app_id']);
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$timestamp = date('YmdHis');
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$params = [
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'appId' => $appId,
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'mobile' => $mobile,
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'timestamp' => $timestamp,
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];
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if ($creditcode !== '') {
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$params['creditcode'] = $creditcode; // 传了必须一并入签
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}
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$params['sign'] = $this->md5Sha1RsaSign($params);
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// 文档示例形如 https://paytaskpage.worknoya.vip/#/?appId=..&mobile=..×tamp=..&sign=..#/
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return $base . '/?' . http_build_query($params) . '#/';
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}
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// ================================================================
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// 3. 验签（企油通响应 / 回调）
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// ================================================================
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/**
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* 验签企油通返回 / 回调报文
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* @param array $data 业务数据（通用响应里的 data，或回调 params）
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* @param string $sign 报文里的 sign
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* 【TODO 待对接人确认】验签串的构造（对 data 的 json 形态 / 是否含外层字段）
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*/
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public function verify($data, string $sign): bool
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{
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if ($sign === '' || $this->platformPublicKey === false) {
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return false;
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}
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$payload = is_string($data) ? $data : json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
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$ok = openssl_verify($payload, base64_decode($sign), $this->platformPublicKey, OPENSSL_ALGO_SHA256);
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return $ok === 1;
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}
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// ================================================================
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// 内部：算法与密钥
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// ================================================================
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/**
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* 同族签名算法：ksort → http_build_query → urldecode → 大写MD5 → SHA1withRSA → base64
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*/
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protected function md5Sha1RsaSign(array $params): string
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{
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ksort($params);
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$raw = urldecode(http_build_query($params));
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$md5Upper = strtoupper(md5($raw));
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$signature = '';
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openssl_sign($md5Upper, $signature, $this->privateKey, OPENSSL_ALGO_SHA1);
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return base64_encode($signature);
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}
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/**
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* 载入私钥：支持 PEM 全文 / 去头尾的单行 base64
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* @return \OpenSSLAsymmetricKey|resource|string
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*/
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protected function loadPrivateKey(string $key)
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{
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if ($key === '') {
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return '';
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}
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if (strpos($key, '-----BEGIN') === false) {
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$key = "-----BEGIN PRIVATE KEY-----\n" . chunk_split(trim($key), 64, "\n") . "-----END PRIVATE KEY-----\n";
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}
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$res = openssl_pkey_get_private($key);
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return $res === false ? '' : $res;
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}
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/**
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* 载入公钥：支持 PEM 全文 / 去头尾的单行 base64
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* @return \OpenSSLAsymmetricKey|resource|false
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*/
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protected function loadPublicKey(string $key)
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{
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if ($key === '') {
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return false;
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}
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if (strpos($key, '-----BEGIN') === false) {
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$key = "-----BEGIN PUBLIC KEY-----\n" . chunk_split(trim($key), 64, "\n") . "-----END PUBLIC KEY-----\n";
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}
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return openssl_pkey_get_public($key);
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}
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}
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