96 lines
2.6 KiB
PHP
96 lines
2.6 KiB
PHP
<?php
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/**
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* +----------------------------------------------------------------------
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* | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
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* +----------------------------------------------------------------------
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* | Copyright (c) 2016~2022 https://www.crmeb.com All rights reserved.
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* +----------------------------------------------------------------------
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* | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
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* +----------------------------------------------------------------------
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* | Author: CRMEB Team <admin@crmeb.com>
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* +----------------------------------------------------------------------
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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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