Can PHP 5.3 Handle RSA Encryption/Decryption Without Padding?

Encrypting and Decrypting Text Using RSA in PHP without Padding

Question:

Is there a PHP 5.3 class that facilitates RSA encryption and decryption without employing padding?

Additionally, I am in possession of private and public keys, along with the values for p, q, and modulus.

Answer:

For your PHP 5.3 requirements, phpseclib offers a convenient pure PHP implementation of RSA. Here's how you can utilize it:

<?php
include('Crypt/RSA.php');

$privatekey = file_get_contents('private.key');

$rsa = new Crypt_RSA();
$rsa->loadKey($privatekey);

$plaintext = new Math_BigInteger('aaaaaa');
echo $rsa->_exponentiate($plaintext)->toBytes();
?>

Utilizing this code snippet, you can seamlessly encrypt and decrypt text using RSA without any padding.

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