c1e74d8e68
- 按 docs/renew-code-comment.md 将 PHP 文件头改为带边框的 Author 注释\n- 注释中的 crmeb.com 替换为 uj345.cn（代码字符串中的外链未改）\n- 新增 docs/renew-code-comment.md 说明 Made-with: Cursor
88 lines
2.1 KiB
PHP
88 lines
2.1 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | Author: ScottPan Team
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// +----------------------------------------------------------------------
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namespace crmeb\services\wechat\util;
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use InvalidArgumentException;
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/**
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* AES 加密解密
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* Class AES
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* @author 等风来
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* @email 136327134@qq.com
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* @date 2023/9/18
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* @package crmeb\services\wechat\util
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*/
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class AES
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{
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/**
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* 加密
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* @param string $text
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* @param string $key
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* @param string $iv
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* @param int $option
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*
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* @return string
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*/
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public static function encrypt(string $text, string $key, string $iv, int $option = OPENSSL_RAW_DATA): string
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{
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self::validateKey($key);
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self::validateIv($iv);
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return openssl_encrypt($text, self::getMode($key), $key, $option, $iv);
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}
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/**
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* 解密
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* @param string $cipherText
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* @param string $key
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* @param string $iv
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* @param int $option
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* @param string|null $method
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*
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* @return string
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*/
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public static function decrypt(string $cipherText, string $key, string $iv, int $option = OPENSSL_RAW_DATA, $method = null): string
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{
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self::validateKey($key);
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self::validateIv($iv);
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return openssl_decrypt($cipherText, $method ?: self::getMode($key), $key, $option, $iv);
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}
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/**
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* @param string $key
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*
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* @return string
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*/
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public static function getMode(string $key)
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{
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return 'aes-' . (8 * strlen($key)) . '-cbc';
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}
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/**
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* @param string $key
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*/
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public static function validateKey(string $key)
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{
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if (!in_array(strlen($key), [16, 24, 32], true)) {
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throw new InvalidArgumentException(sprintf('Key length must be 16, 24, or 32 bytes; got key len (%s).', strlen($key)));
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}
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}
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/**
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* @param string $iv
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*
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* @throws InvalidArgumentException
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*/
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public static function validateIv(string $iv)
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{
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if (!empty($iv) && 16 !== strlen($iv)) {
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throw new InvalidArgumentException('IV length must be 16 bytes.');
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}
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}
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}
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