Online PHP editor | rfc for nv7UJ

@ 2017-02-14T06:29:29Z

<?php

function base64url_encode($data) {
    return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
}

function base64url_decode($data) {
    return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT));
}

function encryptCode($data){
    return mcrypt_encrypt( MCRYPT_DES , '12345678' , $data , 'cbc' ,'87654321'); 
}

function decryptCode($data){
    return mcrypt_decrypt( MCRYPT_DES , '12345678' , $data , 'cbc' ,'87654321'); 
}

$id = 'Q2JmDpmqjNmGT4FJ2EkXXITOgc31ZA52';
$base64Decoded = base64url_decode($id);
$decrypted = decryptCode($base64Decoded);
print_r($decrypted."\n");
print_r("\n\n");

# Make the new plaintext string
$toAdd = 'hellothere';
$additionalCipherText = encryptCode($toAdd);
$additionalEncoded = base64url_encode($additionalCipherText);
print_r("Additional cipher text:".$additionalEncoded."\n");
print_r("\n\n");

# Concatenate the plaintext and encrypt
$plaintext = $decrypted.$toAdd;
$cipherText = encryptCode($plaintext);
$base64Encoded = base64url_encode($cipherText);
print_r("     New cipher text: ".$base64Encoded."\n");
print_r("Original cipher text: ".$id.$additionalEncoded."\n");

# Try the reverse order
$plaintext = $toAdd.$decrypted;
$cipherText = encryptCode($plaintext);
$base64Encoded = base64url_encode($cipherText);
print_r("     New cipher text: ".$base64Encoded."\n");
print_r("Original cipher text: ".$additionalEncoded.$id."\n");

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught Error: Call to undefined function mcrypt_decrypt() in /in/nv7UJ:16 Stack trace: #0 /in/nv7UJ(21): decryptCode('Cbf\x0E\x99\xAA\x8C\xD9\x86O\x81I\xD8I\x17...') #1 {main} thrown in /in/nv7UJ on line 16
Process exited with code 255.

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