PHP实现的简单对称加密与解密方法实例小结

/*** 加密* @var string [要加密的值]*/$secretKey = "wwj";$data = $res['u_id'];$encryptedData = Yii::$app->getSecurity()->encryptByPassword($data, $secretKey);

/*** 解密* @var [type] [加密前的值]*/$aid = $req->get('uid');$secretKey = "wwj";$uid = Yii::$app->getSecurity()->decryptByPassword($aid,$secretKey);

/** * 安全URL编码 * @param type $data * @return type */function encode($data) { return str_replace(array('+', '/', '='), array('-', '_', ''), base64_encode(serialize($data)));}/*** 安全URL解码* @param type $string* @return type*/function decode($string) { $data = str_replace(array('-', '_'), array('+', '/'), $string); $mod4 = strlen($data) % 4; ($mod4) && $data .= substr('====', $mod4); return unserialize(base64_decode($data));}

/*** 加密* @param [type] $code [description]* @return [type]  [description]*/public static function encrypt($code){ return urlencode(base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5("key"), $code, MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND))));}/** * 解密 * @param [type] $code [description] * @return [type]  [description] */public static function decrypt($code){ return urldecode(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5("key"), base64_decode($code), MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND)));}

/*** 简单对称加密* @param string $string [需要加密的字符串]* @param string $skey [加密的key]* @return [type]   [加密后]*/function encode($string = '', $skey = 'cxphp'){  $strArr = str_split(base64_encode($string));  $strCount = count($strArr);  foreach (str_split($skey) as $key => $value)  $key < $strCount && $strArr[$key].=$value;  return str_replace(array('=', '+', '/'), array('O0O0O', 'o000o', 'oo00o'), join('', $strArr));}

/*** 简单对称解密* @param string $string [加密后的值]* @param string $skey [加密的key]* @return [type]   [加密前的字符串]*/function decode($string = '', $skey = 'cxphp'){  $strArr = str_split(str_replace(array('O0O0O', 'o000o', 'oo00o'), array('=', '+', '/'), $string), 2);  $strCount = count($strArr);  foreach (str_split($skey) as $key => $value)   $key <= $strCount && isset($strArr[$key]) && $strArr[$key][1] === $value && $strArr[$key] = $strArr[$key][0];  return base64_decode(join('', $strArr));}