加密解密 - 请问PHP如何通过openssl实现AES-256加密算法?
本文介绍了加密解密 - 请问PHP如何通过openssl实现AES-256加密算法?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
问 题
我知道PHP有提供openssl模块,但是我对这个模块不了解,请问有没有了解的朋友。非常感谢。
解决方案
function encrypt($value, $key = '1234567891234567')
{
$length = mb_strlen($key, '8bit');
if (!$length === 16) {
return false;
}
$seeds = '0123456789abcdefghijklmnopqrstuvwxyz';
$length = 16;
$iv = substr(str_shuffle(str_repeat($seeds, $length)), 0, $length);
$value = \openssl_encrypt(serialize($value), 'AES-128-CBC', $key, 0, $iv);
if ($value === false) {
return false;
}
$iv = base64_encode($iv);
$mac = hash_hmac('sha256', $iv.$value, $key);
$json = json_encode(compact('iv', 'value', 'mac'));
if (! is_string($json)) {
return false;
}
return base64_encode($json);
}
function decrypt($payload, $key = '1234567891234567')
{
$length = mb_strlen($key, '8bit');
if (!$length === 16) {
return false;
}
$payload = json_decode(base64_decode($payload), true);
if (! $payload || ! is_array($payload) || ! isset($payload['iv']) || ! isset($payload['value']) || ! isset($payload['mac'])) {
return false;
}
$seeds = '0123456789abcdefghijklmnopqrstuvwxyz';
$length = 16;
$bytes = substr(str_shuffle(str_repeat($seeds, $length)), 0, $length);
$hash = hash_hmac('sha256', $payload['iv'].$payload['value'], $key);
$calcMac = hash_hmac('sha256', $hash, $bytes, true);
if (! hash_equals(hash_hmac('sha256', $payload['mac'], $bytes, true), $calcMac)) {
return false;
}
$iv = base64_decode($payload['iv']);
$decrypted = \openssl_decrypt($payload['value'], 'AES-128-CBC', $key, 0, $iv);
if ($decrypted === false) {
return false;
}
return unserialize($decrypted);
}
$str = '123456';
$encrypt = encrypt($str);
$decrypt = decrypt($encrypt);
var_dump($decrypt);
随便写的,看着用吧
这篇关于加密解密 - 请问PHP如何通过openssl实现AES-256加密算法?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文