Encryption and Decryption in PHP

Hello Readers( if any ;) ) . Encryption and Decryption is one of the most useful and widely used technique when we want to pass values through URL (or) for encrypting the sensitive data. I googled over the Internet for these functions and finally i got them. Here are the two simple functions to encrypt and decrypt the the data with a key (or) password.

First, let us see the ENCRYPT function

/** Input Parameters are

** $string- The string you want to encrypt

** $key- string(it's like a password)

**/

function encrypt($string, $key) {
$result ='';
for($i=0; $i

//enode the result using base64 function for more security
return base64_encode($result);
}

?>

Now head on to DECRYPT function.

/** Input Parameters are

** $string- The string you want to encrypt

** $key- string(it's like a password)

**/

function decrypt($string, $key) {

$result ='';

//decode the result using base64 decode function

$string = base64_decode($string);
for($i=0; $i

?>

USAGE:

//Here we are encrypting "foobar" using the key "wordpress"

$encoded = encrypt("foobar","wordpress");

//Here we are decrypting "foobar" using the key "wordpress"

$decoded= decrypt($encoded,"wordpress");

posted by adityachandra @ 12:55 PM,

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