Proyectos de Subversion LeadersLinked - Services

<?php

declare(strict_types=1);

namespace LeadersLinked\Library;

class AesEncryption {
        protected $key;
        protected $data;
        protected $method;
        /**
         * Available OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING
         *

         */
        protected $options = 0;
      
        function __construct($data = null, $key = null, $blockSize = null, $mode = 'CBC') {
            $this->setData($data);
            $this->setKey($key);
            $this->setMethode($blockSize, $mode);
        }
  
        public function setData($data) {
            $this->data = $data;
        }
  
        public function setKey($key) {
            $this->key = $key;
        }
        /**
         * CBC 128 192 256
         CBC-HMAC-SHA1 128 256
         CBC-HMAC-SHA256 128 256
         CFB 128 192 256
         CFB1 128 192 256
         CFB8 128 192 256
         CTR 128 192 256
         ECB 128 192 256
         OFB 128 192 256
         XTS 128 256
  
         */
        public function setMethode($blockSize, $mode = 'CBC') {
            if($blockSize==192 && in_array('', array('CBC-HMAC-SHA1','CBC-HMAC-SHA256','XTS'))){
                $this->method=null;
                throw new \Exception('Invlid block size and mode combination!');
            }
            $this->method = 'AES-' . $blockSize . '-' . $mode;
        }
        /**
         *
         * @return boolean
         */
        public function validateParams() {
            if ($this->data != null &&
                $this->method != null ) {
                    return true;
                } else {
                    return FALSE;
                }
        }
        //it must be the same when you encrypt and decrypt
        protected function getIV() {
            return '1234567890123456';
            //return mcrypt_create_iv(mcrypt_get_iv_size($this->cipher, $this->mode), MCRYPT_RAND);
            return openssl_random_pseudo_bytes(openssl_cipher_iv_length($this->method));
        }
        /**

         * @throws \Exception
         */
        public function encrypt() {
            if ($this->validateParams()) {
                return trim(openssl_encrypt($this->data, $this->method, $this->key, $this->options,$this->getIV()));
            } else {
                throw new \Exception('Invlid params!');
            }
        }
        
        /**
         *
         * @throws \Exception
         */
        public function decrypt() {
            if ($this->validateParams()) {
                $ret=openssl_decrypt($this->data, $this->method, $this->key, $this->options,$this->getIV());
                error_log('ret = ' . $ret . ' data = ' . $this->data . ' key = ' . $this->key);
                
                return   trim($ret);
            } else {
                throw new \Exception('Invlid params!');
            }
        }
    }