<?php
/**
* An example of how to encrypt a file using AES-128 and CFB mode
*
*/
error_reporting(E_ALL | E_STRICT);
include dirname(__FILE__) . "/../phpCrypt.php";
use PHP_Crypt\PHP_Crypt;
$key = "^mY@TEst~Key_012";
$crypt = new PHP_Crypt($key, PHP_Crypt::CIPHER_BLOWFISH, PHP_Crypt::MODE_NCFB);
$cipher_block_sz = $crypt->cipherBlockSize();
// in bytes
$encrypt = "";
$decrypt = "";
$result = "";
print "Encrypting file.txt using:\n";
print "CIPHER: " . $crypt->cipherName() . "\n";
print "MODE: " . $crypt->modeName() . "\n";
/*
* DO THE ENCRYPTION
*/
$rhandle = fopen("file.txt", "r");
$whandle = fopen("file.encrypted.txt", "w+b");
print "Creating file.encrypted.txt\n";
// CFB mode requires an IV, create it
$iv = $crypt->createIV();
while (!feof($rhandle)) {
$bytes = fread($rhandle, $cipher_block_sz);
$result = $crypt->encrypt($bytes);
fwrite($whandle, $result);