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<?php
namespace tinymeng\OAuth2\Helper;
/**
* Class AES.
*
* @author overtrue <[email protected]>
*/
class AES
{
public static function encrypt(string $text, string $key, string $iv, int $option = OPENSSL_RAW_DATA): string
self::validateKey($key);
self::validateIv($iv);
return openssl_encrypt($text, self::getMode($key), $key, $option, $iv);
}
* @param string|null $method
public static function decrypt(string $cipherText, string $key, string $iv, int $option = OPENSSL_RAW_DATA, $method = null): string
return openssl_decrypt($cipherText, $method ?: self::getMode($key), $key, $option, $iv);
* @param string $key
* @return string
public static function getMode($key)
return 'aes-'.(8 * strlen($key)).'-cbc';
public static function validateKey(string $key)
if (!in_array(strlen($key), [16, 24, 32], true)) {
throw new \InvalidArgumentException(sprintf('Key length must be 16, 24, or 32 bytes; got key len (%s).', strlen($key)));
* @throws \InvalidArgumentException
public static function validateIv(string $iv)
if (!empty($iv) && 16 !== strlen($iv)) {
throw new \InvalidArgumentException('IV length must be 16 bytes.');
majiameng /
OAuth2
