详解PHP7 OpenSSL DES-EDE-CBC加解密

<?phpclass DesEdeCbc {private $cipher, $key, $iv;/**
 * DesEdeCbc constructor.
 * @param $cipher
 * @param $key
 * @param $iv
 */public function __construct($cipher, $key, $iv) {$this->cipher = $cipher;$this->key= $this->getFormatKey($key);$this->iv = $iv;}/**
 * @func  加密
 * @param $msg
 * @return string
 */public function encrypt($msg) {$des = @openssl_encrypt($msg, $this->cipher, $this->key, OPENSSL_RAW_DATA, $this->iv);return base64_encode($des);}/**
 * @func  解密
 * @param $msg
 * @return string
 */public function decrypt($msg) {return @openssl_decrypt(base64_decode($msg), $this->cipher, $this->key, OPENSSL_RAW_DATA, $this->iv);}/**
 * @func  生成24位长度的key
 * @param $skey
 * @return bool|string
 */private function getFormatKey($skey) {$md5Value= md5($skey);$md5ValueLen = strlen($md5Value);$key = $md5Value . substr($md5Value, 0, $md5ValueLen / 2);return hex2bin($key);}}$cipher = 'DES-EDE-CBC';$msg = 'HelloWorld';$key = '12345678';$iv  = "\x00\x00\x00\x00\x00\x00\x00\x00";$des = new DesEdeCbc($cipher, $key, $iv);// 加密$msg = $des->encrypt($msg);echo '加密后: ' . $msg . PHP_EOL;// 解密$src = $des->decrypt($msg);echo '解密后: ' . $src . PHP_EOL;