رده:رمزنگاری نادرست(Cryptographic Failures)

<?php

// This is an example of using a weak encryption algorithm
// Don't use this in real applications!

$data = "secret data";
$key = "mykey";

$encrypted = mcrypt_encrypt(MCRYPT_DES, $key, $data, MCRYPT_MODE_ECB);

// This encrypted string is vulnerable to attacks, since ECB mode
// repeats the same block of ciphertext for identical plaintext blocks.
// An attacker could use this to infer information about the plaintext.

echo $encrypted;

?>

<?php

// This is an example of using a more secure encryption algorithm
// Use this in real applications!

$data = "secret data";
$key = random_bytes(32); // Generate a secure key
$iv = random_bytes(16); // Generate a secure IV

$encrypted = openssl_encrypt($data, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);

// This encrypted string is much more secure, since CBC mode
// adds randomness to the encryption process, making it resistant
// to certain types of attacks.

echo $encrypted;

?>