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This article introduces the use of AES encryption and decryption classes in the PHP backend. Now I share it with everyone. Friends in need can refer to it
<?php namespace app\common\lib; /** * aes 加密 解密类库 * @by singwa * Class Aes * @package app\common\lib */ class Aes { private $key = null; /** * * @param $key 密钥 * @return String */ public function __construct() { // 需要小伙伴在配置文件app.php中定义aeskey $this->key = config('app.aeskey'); } /** * 加密 * @param String input 加密的字符串 * @param String key 解密的key * @return HexString */ public function encrypt($input = '') { $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB); $input = $this->pkcs5_pad($input, $size); $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, ''); $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND); mcrypt_generic_init($td, $this->key, $iv); $data = mcrypt_generic($td, $input); mcrypt_generic_deinit($td); mcrypt_module_close($td); $data = base64_encode($data); return $data; } /** * 填充方式 pkcs5 * @param String text 原始字符串 * @param String blocksize 加密长度 * @return String */ private function pkcs5_pad($text, $blocksize) { $pad = $blocksize - (strlen($text) % $blocksize); return $text . str_repeat(chr($pad), $pad); } /** * 解密 * @param String input 解密的字符串 * @param String key 解密的key * @return String */ public function decrypt($sStr) { $decrypted= mcrypt_decrypt(MCRYPT_RIJNDAEL_128,$this->key,base64_decode($sStr), MCRYPT_MODE_ECB); $dec_s = strlen($decrypted); $padding = ord($decrypted[$dec_s-1]); $decrypted = substr($decrypted, 0, -$padding); return $decrypted; } }
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