Home
Blog
Contact
Mailing List
Software
Active Directory Products
Object Compare
Permission Compare
IPhone Products
Calls To Calendar
SMS To CSV
SMS To Gmail
Voicemail To Gmail
Sites
How Long For Me
SaveMySerials
 Blog
 Twitter
|
<< Back To All Blogs
Simple encryption class for PHP
Tuesday, March 31st, 2009
I've been doing some PHP encryption work lately, and seeing as such wrote a class to simplify the process. Hopefully this will save some of you some reading on the numerous options with PHP's mcrypt library. That being said I would not just copy this as is and assume you have secure encryption. 99% of encryption/decryption is understanding the process, and what you are doing. Take some time and read up on encryption if you have not done so already.
Without further ado, I present to you the Cipher class.
class Cipher {
var $securekey = "";
var $iv = "";
var $iv_size = 32;
function Cipher($textkey) {
$this->securekey = hash('sha256',$textkey,TRUE);
$this->iv = mcrypt_create_iv($this->iv_size);
}
function encrypt($input) {
return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $this->securekey, $input, MCRYPT_MODE_ECB, $this->iv));
}
function decrypt($input) {
return trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $this->securekey, base64_decode($input), MCRYPT_MODE_ECB, $this->iv));
}
}
Not very difficult. But as some sample usage:
$cipher = new Cipher('secret passphrase');
$encrypted = $cipher->encrypt("you should encrypt me");
echo $encrypted;
$decrypted = $cipher->decrypt($encrypted);
echo $decrypted;
There are a whole number of different encryption algorithms available if you were to need to change from Rijndael, but it is very well-known and time-proven so if you need a quick and easy encryption class, just copy and paste and go to town!
Encryptin' Tom Out.
Tags
PHP
Encryption
Related Blogs
Calling .NET WebService From PHP
Parsing XML in PHP with SimpleXML
Resolving CURLOPT_FOLLOWLOCATION cannot be activated with PHP and CURL
Netbeans and PHP: A promising future
Implementing AJAX with PHP and MySQL
Comments
Currently no comments.
Add A Comment
Name:
URL:
Email Address: (not public, used to send notifications on further comments)
Comments:
Enter the text above, except for the 1st and last character:
|