初始化项目：添加后端代码、ThinkPHP框架、前端资源

2026-09-03 12:42:39 +08:00
commit 482bece22e
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+<?php
+
+/*
+ * This file is part of the overtrue/wechat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace douyin;
+
+use app\common\exception\Exception;
+use douyin\AES;
+
+/**
+ * Class Encryptor.
+ *
+ * @author mingyoung <mingyoungcheung@gmail.com>
+ */
+class Encryptor
+{
+    /**
+     * Decrypt data.
+     *
+     * @param string $sessionKey
+     * @param string $iv
+     * @param string $encrypted
+     *
+     * @return array
+     */
+    public function decryptData(string $sessionKey, string $iv, string $encrypted): array
+    {
+
+        $decrypted = AES::decrypt(
+            base64_decode($encrypted, false), base64_decode($sessionKey, false), base64_decode($iv, false)
+        );
+
+        $decrypted = json_decode($this->pkcs7Unpad($decrypted), true);
+        if (!$decrypted) {
+            throw new Exception('The given payload is invalid.');
+        }
+
+        return $decrypted;
+    }
+
+
+    const ERROR_INVALID_SIGNATURE = -40001; // Signature verification failed
+    const ERROR_CALC_SIGNATURE = -40003; // Calculating the signature failed
+    const ERROR_INVALID_AES_KEY = -40004; // Invalid AESKey
+    const ERROR_INVALID_APP_ID = -40005; // Check AppID failed
+    const ERROR_ENCRYPT_AES = -40006; // AES EncryptionInterface failed
+    const ERROR_DECRYPT_AES = -40007; // AES decryption failed
+    const ERROR_BASE64_ENCODE = -40009; // Base64 encoding failed
+    const ERROR_BASE64_DECODE = -40010; // Base64 decoding failed
+    const ILLEGAL_BUFFER = -41003; // Illegal buffer
+
+    /**
+     * @var string
+     */
+    protected $aesKey;
+
+    /**
+     * Block size.
+     *
+     * @var int
+     */
+    protected $blockSize = 32;
+
+    /**
+     * Constructor.
+     *
+     * @param string      $appId
+     * @param string|null $token
+     * @param string|null $aesKey
+     */
+    public function __construct(string $aesKey = null)
+    {
+        $this->aesKey = base64_decode($aesKey.'=', true);
+    }
+
+
+    /**
+     * Get SHA1.
+     *
+     * @return string
+     *
+     * @throws self
+     */
+    public function signature(): string
+    {
+        $array = func_get_args();
+        sort($array, SORT_STRING);
+
+        return sha1(implode($array));
+    }
+
+    /**
+     * PKCS#7 pad.
+     *
+     * @param string $text
+     * @param int    $blockSize
+     *
+     * @return string
+     *
+     */
+    public function pkcs7Pad($text, $blockSize)
+    {
+        if ($blockSize > 256) {
+            throw new Exception('$blockSize may not be more than 256');
+        }
+        $padding = $blockSize - (strlen($text) % $blockSize);
+        $pattern = chr($padding);
+
+        return $text.str_repeat($pattern, $padding);
+    }
+
+    /**
+     * PKCS#7 unpad.
+     *
+     * @param string $text
+     *
+     * @return string
+     */
+    public function pkcs7Unpad($text)
+    {
+        $pad = ord(substr($text, -1));
+        if ($pad < 1 || $pad > $this->blockSize) {
+            $pad = 0;
+        }
+
+        return substr($text, 0, (strlen($text) - $pad));
+    }
+}