PHP Encrypt/Decrypt: Simple class to encrypt url data

Author: Zeeshan Rasool  |  Last updated on March 30th, 2019 Codeigniter, PHP Tutorials, Web Development

Encryption is useful where critical data is being transferred in url. I have found a simple and secure encryption class with some changes to make it fit for new users. You can use it in Codeigniter websites as well. Just copy it in application/libraries directory and use it in other libraries style.
Here is the code for encryption class.

PHP

class Encryption { var $skey = "SuPerEncKey2010"; // you can change it public function safe_b64encode($string) { $data = base64_encode($string); $data = str_replace(array('+','/','='),array('-','_',''),$data); return $data; } public function safe_b64decode($string) { $data = str_replace(array('-','_'),array('+','/'),$string); $mod4 = strlen($data) % 4; if ($mod4) { $data .= substr('====', $mod4); } return base64_decode($data); } public function encode($value){ if(!$value){return false;} $text = $value; $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); $crypttext = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $this->skey, $text, MCRYPT_MODE_ECB, $iv); return trim($this->safe_b64encode($crypttext)); } public function decode($value){ if(!$value){return false;} $crypttext = $this->safe_b64decode($value); $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); $decrypttext = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $this->skey, $crypttext, MCRYPT_MODE_ECB, $iv); return trim($decrypttext); } }

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class Encryption { var $skey = "SuPerEncKey2010"; // you can change it     public  function safe_b64encode($string) {         $data = base64_encode($string);         $data = str_replace(array('+','/','='),array('-','_',''),$data);         return $data;     }   public function safe_b64decode($string) {         $data = str_replace(array('-','_'),array('+','/'),$string);         $mod4 = strlen($data) % 4;         if ($mod4) {             $data .= substr('====', $mod4);         }         return base64_decode($data);     }     public  function encode($value){     if(!$value){return false;}         $text = $value;         $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);         $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);         $crypttext = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $this->skey, $text, MCRYPT_MODE_ECB, $iv);         return trim($this->safe_b64encode($crypttext));     }          public function decode($value){         if(!$value){return false;}         $crypttext = $this->safe_b64decode($value);         $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);         $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);         $decrypttext = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $this->skey, $crypttext, MCRYPT_MODE_ECB, $iv);         return trim($decrypttext);     } }

You need to include this class any where in to make your data encrypted with simple encode() or decode() functions.
If you are using it in Codeigniter then use like this

PHP

$this->encrypt->encode('Your data'); $this->encrypt->decode('Your encrypted data');

1 2	$this->encrypt->encode('Your data'); $this->encrypt->decode('Your encrypted data');

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5 to “PHP Encrypt/Decrypt: Simple class to encrypt url data”

• 

  atomxml June 11, 2014 at 10:33 pm

  Thank you. :)
• 

  Converter Bangla August 2, 2014 at 7:50 am

  Available For PHP Script Encoder, ByteRun Decoder, Base64 Encoder, Base64 Decoder, JS Compressor, CSS Compressor, Image Base64, JS Dcompressor, CSS Dcompressor, HTML Dcompressor, Code D-Organizer.

  http://www.encript.co
• 

  suga priya October 9, 2014 at 8:42 am

  Thank you so much
• 

  Engin July 4, 2015 at 4:28 pm

  I’ve been struggling for the last 2 hours just to find a simple encryption code and none of them worked except yours. Thank you very much!
• 

  titto vedder August 5, 2016 at 7:28 am

  Hi, master, how to implementing this code in codeigniter 3 ?