PHP mcrypt_generic函数代码示例

 /**
  * Encrypt and return a string using the Rijndael 256 cypher
  * @param string $str String to encrypt
  * @param string $key Key to encrypt the string
  * @param string $iv Initialisation vector
  * @return string
  */
 public static function _encryptRijndael256($str, $key, $iv = FALSE)
 {
     // If the string is empty
     if (empty($str)) {
         return '';
     }
     // Open the cypher
     $cypher = mcrypt_module_open('rijndael-256', '', 'ofb', '');
     // Create the IV if there is none
     if ($iv === FALSE) {
         $iv = self::_genRijndael256IV($cypher);
     }
     // Set Key
     $key = substr($key, 0, mcrypt_enc_get_key_size($cypher));
     // Initialise encryption
     mcrypt_generic_init($cypher, $key, $iv);
     // Encrypt String
     $encrypted = mcrypt_generic($cypher, $strString);
     // Terminate encryption hander
     mcrypt_generic_deinit($cypher);
     // Close Module
     mcrypt_module_close($cypher);
     // Return encrypted string
     return $encrypted;
 }

 /**
  */
 public function encrypt($text)
 {
     mcrypt_generic_init($this->_mcrypt, $this->key, empty($this->iv) ? str_repeat('0', Horde_Crypt_Blowfish::IV_LENGTH) : $this->iv);
     $out = mcrypt_generic($this->_mcrypt, $this->_pad($text));
     mcrypt_generic_deinit($this->_mcrypt);
     return $out;
 }

 function tripleDESEncrypt1($src, $key)
 {
     if ($src == NULL) {
         return NULL;
     }
     $iv = $this->my_mcrypt_create_iv();
     /* Open module, and create IV */
     $td = mcrypt_module_open(MCRYPT_3DES, '', 'cbc', '');
     if ($key == NULL) {
         $key = "";
     }
     $key = substr($key, 0, mcrypt_enc_get_key_size($td));
     /* Initialize encryption handle */
     if (mcrypt_generic_init($td, $key, $iv) != -1) {
         /* Encrypt data */
         $encryptedData = mcrypt_generic($td, $src);
         $iv_size = mcrypt_get_iv_size(MCRYPT_3DES, MCRYPT_MODE_CBC);
         $encryptedData = chr($iv_size) . $iv . $encryptedData;
         mcrypt_generic_deinit($td);
         //echo "src is:" . $src. "<br>\n";
         //echo "iv is :" .bin2hex($iv)."<br>\n";
         //echo "key is :" .bin2hex($key)."<br>\n";
     } else {
         $encryptedData = null;
     }
     mcrypt_module_close($td);
     return $encryptedData;
 }

 public static function encrypt($keyString, $value)
 {
     $origKey = $keyString;
     if (strlen($keyString) > 32) {
         $keyString = substr($keyString, 0, 32);
     }
     if (strlen($keyString) < 32) {
         $keyString = str_pad($keyString, 32, 'X');
     }
     $cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
     $iv = TPSecurityUtils::genRandomString(16);
     if (mcrypt_generic_init($cipher, $keyString, $iv) != -1) {
         $blockSize = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
         $padding = $blockSize - strlen($value) % $blockSize;
         $value .= str_repeat(chr($padding), $padding);
         // PHP pads with NULL bytes if $value is not a multiple of the block size..
         $cipherText = mcrypt_generic($cipher, $value);
         mcrypt_generic_deinit($cipher);
         mcrypt_module_close($cipher);
         $safe = TPSecurityUtils::urlensafe($cipherText);
         return $safe . TPSecurityUtils::DELIM . TPSecurityUtils::hashHmacSha256($origKey, $safe);
     }
     $safe = TPSecurityUtils::urlensafe($value);
     return $safe . TPSecurityUtils::DELIM . TPSecurityUtils::hashHmacSha256($origKey, $safe);
 }

 /**
  * Encrypt
  * 
  * @return mixed string|null
  * @param object $value
  */
 public function encrypt($value)
 {
     if (empty($value)) {
         return $value;
     }
     return base64_encode(mcrypt_generic($this->_handler, (string) $value));
 }

 /**
  * Ritorna la string codificata.
  * Se il costruttore ha fallito nell'inizializzazione dell'algoritmo di cifratura, la stringa viene
  * restituita in chiaro; altrimenti la codifica consiste nella cifratura con l'algoritmo scelto.
  * 
  * @param string $str Se non viene passata nessuna stringa ritorna una stringa vuota.
  * @return string
  */
 public function encrypt($str)
 {
     try {
         $str = filter_var($str, FILTER_SANITIZE_STRING);
         if (empty($str)) {
             throw new InvalidArgumentException('Empty or not valid string as agrument', E_USER_NOTICE);
         }
         if (!isset($this->_cipher)) {
             throw new UnexpectedValueException('Cypher error', E_USER_WARNING);
         }
         if (false === ($iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($this->_cipher), MCRYPT_RAND))) {
             throw new UnexpectedValueException('Cannot initialize vector IV', E_USER_WARNING);
         }
         $s = mcrypt_generic_init($this->_cipher, $this->_key, $iv);
         if (0 > $s || false === $s) {
             throw new exceptions('Encrypt failure', E_USER_WARNING);
         }
         $enc = mcrypt_generic($this->_cipher, $str);
         mcrypt_generic_deinit($this->_cipher);
         return $enc;
     } catch (Exception $e) {
         debug::exception($e);
         return $str;
     }
 }

 public function enkripsi($algoritma, $mode, $secretkey, $fileplain)
 {
     /* Membuka Modul untuk memilih Algoritma & Mode Operasi */
     $td = mcrypt_module_open($algoritma, '', $mode, '');
     /* Inisialisasi IV dan Menentukan panjang kunci yang digunakan */
     $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
     $ks = mcrypt_enc_get_key_size($td);
     /* Menghasilkan Kunci */
     $key = $secretkey;
     //echo "kuncinya : ". $key. "<br>";
     /* Inisialisasi */
     mcrypt_generic_init($td, $key, $iv);
     /* Enkripsi Data, dimana hasil enkripsi harus di encode dengan base64.\
        Hal ini dikarenakan web browser tidak dapat membaca karakter-karakter\
        ASCII dalam bentuk simbol-simbol */
     $buffer = $fileplain;
     $encrypted = mcrypt_generic($td, $buffer);
     $encrypted1 = base64_encode($iv) . ";" . base64_encode($encrypted);
     $encrypted2 = base64_encode($encrypted1);
     $filecipher = $encrypted2;
     /* Menghentikan proses enkripsi dan menutup modul */
     mcrypt_generic_deinit($td);
     mcrypt_module_close($td);
     return $filecipher;
 }

function aes128_encode($data, $mode)
{
    switch ($mode) {
        case "ECB":
        case "CBC":
            if ($mode === "ECB") {
                $cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
            } else {
                $cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
            }
            $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($cipher), MCRYPT_RAND);
            $key = substr('naveen', 0, mcrypt_enc_get_key_size($cipher));
            if (mcrypt_generic_init($cipher, $key, $iv) != 1) {
                $cipherData = mcrypt_generic($cipher, $data);
                mcrypt_generic_deinit($cipher);
                mcrypt_module_close($cipher);
                if ($mode === "ECB") {
                    $sanitizedCipherData = trim(base64_encode($cipherData));
                } else {
                    $sanitizedCipherData = trim(base64_encode($iv) . "_" . base64_encode($cipherData));
                }
                return $sanitizedCipherData;
            } else {
                return false;
            }
            break;
        default:
            return false;
            break;
    }
}

 static function encrypt($input, $base64 = true)
 {
     if (!$input || !strlen($input) > 0) {
         return null;
     }
     if (!($td = mcrypt_module_open('rijndael-256', '', 'ctr', ''))) {
         return null;
     }
     if (!($iv = mcrypt_create_iv(32, MCRYPT_RAND))) {
         return null;
     }
     $content = serialize($input);
     if (mcrypt_generic_init($td, MSettings::$c_key, $iv) !== 0) {
         return null;
     }
     $content = mcrypt_generic($td, $content);
     $content = $iv . $content;
     $mac = self::pbkdf2($content, MSettings::$c_key, 1000, 32);
     $content .= $mac;
     mcrypt_generic_deinit($td);
     mcrypt_module_close($td);
     if ($base64) {
         $content = base64_encode($content);
     }
     return $content;
 }

 /**
  * Encrypt data
  *
  * This method will encrypt data using a given key, vector, and cipher.
  * By default, this will encrypt data using the RIJNDAEL/AES 256 bit cipher. You
  * may override the default cipher and cipher mode by passing your own desired
  * cipher and cipher mode as the final key-value array argument.
  *
  * @param  string $data     The unencrypted data
  * @param  string $key      The encryption key
  * @param  string $iv       The encryption initialization vector
  * @param  array  $settings Optional key-value array with custom algorithm and mode
  * @return string
  */
 public static function encrypt($data, $key, $iv, $settings = array())
 {
     if ($data === '' || !extension_loaded('mcrypt')) {
         return $data;
     }
     //Merge settings with defaults
     $defaults = array('algorithm' => MCRYPT_RIJNDAEL_256, 'mode' => MCRYPT_MODE_CBC);
     $settings = array_merge($defaults, $settings);
     //Get module
     $module = mcrypt_module_open($settings['algorithm'], '', $settings['mode'], '');
     //Validate IV
     $ivSize = mcrypt_enc_get_iv_size($module);
     if (strlen($iv) > $ivSize) {
         $iv = substr($iv, 0, $ivSize);
     }
     //Validate key
     $keySize = mcrypt_enc_get_key_size($module);
     if (strlen($key) > $keySize) {
         $key = substr($key, 0, $keySize);
     }
     //Encrypt value
     mcrypt_generic_init($module, $key, $iv);
     $res = @mcrypt_generic($module, $data);
     mcrypt_generic_deinit($module);
     return $res;
 }

 /**
  * Store an encrypted cookie
  *
  * @param string $cookieName
  * @param mixed  $cookieValue
  * @param int    $expiry default stores just for the browser session
  */
 public static function set($cookieName, $cookieValue, $expiry = 0)
 {
     if (isset($_COOKIE['synsec'])) {
         $synsec = $_COOKIE['synsec'];
     } else {
         $synsec = Tools::randomString('12');
     }
     if ((!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != 'on') && (!isset($_SERVER['HTTP_X_FORWARDED_PROTO']) || $_SERVER['HTTP_X_FORWARDED_PROTO'] != 'https')) {
         $ssl = false;
     } else {
         $ssl = true;
     }
     setcookie('synsec', $synsec, time() + 60 * 60 * 24 * 30, '/', $_SERVER['HTTP_HOST'], $ssl, true);
     $synsec .= 'synErgy' . self::$token;
     /* Open the cipher */
     $td = mcrypt_module_open('rijndael-256', '', 'ofb', '');
     /* Create the IV and determine the keysize length, use MCRYPT_RAND
      * on Windows instead */
     $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_DEV_RANDOM);
     $ks = mcrypt_enc_get_key_size($td);
     /* Create key */
     $key = substr(md5($synsec), 0, $ks);
     /* Intialize encryption */
     mcrypt_generic_init($td, $key, $iv);
     /* Encrypt data */
     $encrypted = mcrypt_generic($td, serialize($cookieValue));
     # Store our secure cookie
     setcookie($cookieName, trim(base64_encode($iv . '|' . $encrypted)), $expiry, '/', $_SERVER['HTTP_HOST'], $ssl, true);
     /* Terminate encryption handler */
     mcrypt_generic_deinit($td);
 }

 private function encrypt($key, $data, $cipher = MCRYPT_3DES, $hash = 'sha256')
 {
     $td = mcrypt_module_open($cipher, '', MCRYPT_MODE_ECB, '');
     if ($td === false) {
         return false;
     }
     $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_DEV_URANDOM);
     if ($iv === false) {
         return false;
     }
     $ks = mcrypt_enc_get_key_size($td);
     switch ($hash) {
         case 'md5':
             $key = substr($this->md5($key), 0, $ks);
         case 'sha256':
             $key = substr($this->sha256($key), 0, $ks);
         case 'sha512':
             $key = substr($this->sha512($key), 0, $ks);
         case 'none':
         default:
             $key = substr($key, 0, $ks);
     }
     mcrypt_generic_init($td, $key, $iv);
     $ret = mcrypt_generic($td, $data);
     mcrypt_generic_deinit($td);
     mcrypt_module_close($td);
     return $iv . $ret;
 }

 public function encrypt($string)
 {
     mcrypt_generic_init($this->cipher, $this->key, $this->iv);
     $cipherText = mcrypt_generic($this->cipher, $string);
     mcrypt_generic_deinit($this->cipher);
     return $cipherText;
 }

 /**
  * @param string $string
  * @return string
  */
 protected function mcrypt($string)
 {
     $this->encryptInit();
     $encrypted = mcrypt_generic($this->getEncryptionDescriptor(), $string);
     $this->encryptDeinit();
     return $encrypted;
 }

 /**
  * 对明文进行加密
  * @param string $text 需要加密的明文
  * @return string 加密后的密文
  */
 public function encrypt($text, $appid)
 {
     try {
         //获得16位随机字符串，填充到明文之前
         $random = $this->getRandomStr();
         $text = $random . pack("N", strlen($text)) . $text . $appid;
         // 网络字节序
         $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
         $module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
         $iv = substr($this->key, 0, 16);
         //使用自定义的填充方式对明文进行补位填充
         $pkc_encoder = new Pkcs7Encoder();
         $text = $pkc_encoder->encode($text);
         mcrypt_generic_init($module, $this->key, $iv);
         //加密
         $encrypted = mcrypt_generic($module, $text);
         mcrypt_generic_deinit($module);
         mcrypt_module_close($module);
         //使用BASE64对加密后的字符串进行编码
         return base64_encode($encrypted);
     } catch (Exception $e) {
         @error_log('Encrypt AES Error: ' . $e->getMessage(), 0);
         return FALSE;
     }
 }