Proyectos de Subversion LeadersLinked - Services

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218 efrain 1 
<?php
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declare(strict_types=1);
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namespace LeadersLinked\Library;
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class AesEncryption {
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        protected $key;
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        protected $data;
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        protected $method;
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        /**
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         * Available OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING
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         *
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         */
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        protected $options = 0;
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        function __construct($data = null, $key = null, $blockSize = null, $mode = 'CBC') {
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            $this->setData($data);
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            $this->setKey($key);
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            $this->setMethode($blockSize, $mode);
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        }
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        public function setData($data) {
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            $this->data = $data;
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        }
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        public function setKey($key) {
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            $this->key = $key;
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        }
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        /**
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         * CBC 128 192 256
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         CBC-HMAC-SHA1 128 256
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         CBC-HMAC-SHA256 128 256
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         CFB 128 192 256
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         CFB1 128 192 256
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         CFB8 128 192 256
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         CTR 128 192 256
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         ECB 128 192 256
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         OFB 128 192 256
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         XTS 128 256
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         */
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        public function setMethode($blockSize, $mode = 'CBC') {
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            if($blockSize==192 && in_array('', array('CBC-HMAC-SHA1','CBC-HMAC-SHA256','XTS'))){
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                $this->method=null;
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                throw new \Exception('Invlid block size and mode combination!');
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            }
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            $this->method = 'AES-' . $blockSize . '-' . $mode;
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        }
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        /**
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         *
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         * @return boolean
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         */
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        public function validateParams() {
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            if ($this->data != null &&
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                $this->method != null ) {
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                    return true;
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                } else {
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                    return FALSE;
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                }
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        }
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        //it must be the same when you encrypt and decrypt
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        protected function getIV() {
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            return '1234567890123456';
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            //return mcrypt_create_iv(mcrypt_get_iv_size($this->cipher, $this->mode), MCRYPT_RAND);
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            return openssl_random_pseudo_bytes(openssl_cipher_iv_length($this->method));
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        }
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        /**
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         * @throws \Exception
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         */
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        public function encrypt() {
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            if ($this->validateParams()) {
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                return trim(openssl_encrypt($this->data, $this->method, $this->key, $this->options,$this->getIV()));
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            } else {
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                throw new \Exception('Invlid params!');
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            }
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        }
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        /**
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         *
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         * @throws \Exception
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         */
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        public function decrypt() {
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            if ($this->validateParams()) {
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                $ret=openssl_decrypt($this->data, $this->method, $this->key, $this->options,$this->getIV());
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                error_log('ret = ' . $ret . ' data = ' . $this->data . ' key = ' . $this->key);
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                return   trim($ret);
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            } else {
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                throw new \Exception('Invlid params!');
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            }
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        }
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    }