AES CFB加解密，不用填充，OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING相当于OPENSSL_NO_PADDING
root@ubuntu:~# cat a.php
<?php
$iv = random_bytes(16);
$encryption_key = hash('sha256', 'key', true);
echo 'key：'. bin2hex($encryption_key)."\n";
echo 'iv：'. bin2hex($iv)."\n";
$data = 'data';
$data = openssl_encrypt($data, 'aes-256-cfb', $encryption_key, OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING, $iv);
echo 'encrypt data：'. bin2hex($data) . "\n";
$data = openssl_decrypt($data, 'aes-256-cfb', $encryption_key, OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING, $iv);
echo 'decrypt data：'. $data . "\r\n";AES CBC加解密，自动使用PKCS#7填充，iv可公开，最好使用唯一的随机字符：
<?php
$iv = random_bytes(16);
$encryption_key = hash('sha256', 'key', true);
$data = 'data';
$data = openssl_encrypt($data, 'aes-256-cbc', $encryption_key, OPENSSL_RAW_DATA, $iv);
echo bin2hex($data) . "\r\n";
$data = openssl_decrypt($data, 'aes-256-cbc', $encryption_key, OPENSSL_RAW_DATA, $iv);
echo $data . "\r\n";
?>标签：none
总结的很棒