Online PHP editor | output for kYAXn

@ 2015-08-05T08:32:01Z

<?php
$message = 'test';
$key = openssl_random_pseudo_bytes(16);
$iv = openssl_random_pseudo_bytes(16);

$cipher = mcrypt_encrypt(
    MCRYPT_RIJNDAEL_128,
    $key,
    $message,
    MCRYPT_MODE_CBC,
    $iv
);

$plain = openssl_decrypt(
    $cipher,
    'aes-128-cbc',
    $key,
    OPENSSL_RAW_DATA | OPENSSL_NO_PADDING,
    $iv
);

//try to detect null padding
if (mb_strlen($iv, '8bit') % mb_strlen($plain, '8bit') == 0) {
        preg_match_all('#([\0]+)$#', $plain, $matches);
        if (mb_strlen($matches[1][0], '8bit') > 1) {
                $plain = rtrim($plain, "\0");
                trigger_error('Detected and stripped null padding. Please double-check results!');
        }
}



var_dump(
    $message,
    bin2hex($cipher),
    $plain,
    mb_strlen($message, '8bit'),
    mb_strlen($plain, '8bit'),
    $message === $plain
);

Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Fatal error: Uncaught Error: Call to undefined function openssl_random_pseudo_bytes() in /in/kYAXn:3 Stack trace: #0 {main} thrown in /in/kYAXn on line 3
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught Error: Call to undefined function openssl_random_pseudo_bytes() in /in/kYAXn:3 Stack trace: #0 {main} thrown in /in/kYAXn on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40: Fatal error: Call to undefined function openssl_random_pseudo_bytes() in /in/kYAXn on line 3
Process exited with code 255.

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