lcc
151 lines
3.8 KiB
PHP
151 lines
3.8 KiB
PHP
<?php
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if (!defined('BASEPATH')) exit('No direct script access allowed');
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class MyEncryption
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{
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public function __construct()
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{
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}
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public function keyED($txt, $encrypt_key)
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{
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$encrypt_key = md5($encrypt_key);
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$ctr = 0;
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$tmp = "";
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for ($i = 0; $i < strlen($txt); $i++) {
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if ($ctr == strlen($encrypt_key))
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$ctr = 0;
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$tmp .= substr($txt, $i, 1) ^ substr($encrypt_key, $ctr, 1);
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$ctr++;
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}
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return $tmp;
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}
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public function encrypt($txt, $key)
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{
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$encrypt_key = md5(mt_rand(0, 100));
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$ctr = 0;
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$tmp = "";
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for ($i = 0; $i < strlen($txt); $i++) {
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if ($ctr == strlen($encrypt_key))
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$ctr = 0;
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$tmp .= substr($encrypt_key, $ctr, 1) . (substr($txt, $i, 1) ^ substr($encrypt_key, $ctr, 1));
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$ctr++;
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}
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return $this->keyED($tmp, $key);
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}
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public function decrypt($txt, $key)
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{
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$txt = $this->keyED($txt, $key);
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$tmp = "";
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for ($i = 0; $i < strlen($txt); $i++) {
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$md5 = substr($txt, $i, 1);
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$i++;
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$tmp .= (substr($txt, $i, 1) ^ $md5);
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}
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return $tmp;
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}
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/**
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* Notes:url加key加密
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* Created on: 2020/10/18 17:01
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* Created by: dengbw
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* @param $url
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* @param $key
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* @return string
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*/
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public function encrypt_url($url, $key)
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{
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return rawurlencode(base64_encode($this->encrypt($url, $key)));
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}
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/**
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* Notes:url加key解密
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* Created on: 2020/10/18 17:02
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* Created by: dengbw
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* @param $url
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* @param $key
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* @return string
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*/
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public function decrypt_url($url, $key)
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{
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return $this->decrypt(base64_decode(rawurldecode($url)), $key);
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}
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/**
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* Notes:url加key解密数组
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* Created on: 2020/10/18 17:02
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* Created by: dengbw
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* @param $url
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* @param $key
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* @return string
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*/
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public function get_url($str, $key)
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{
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$str = $this->decrypt_url($str, $key);
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$url_array = explode('&', $str);
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if (is_array($url_array)) {
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foreach ($url_array as $var) {
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$var_array = explode("=", $var);
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$vars [$var_array [0]] = $var_array [1];
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}
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}
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return $vars;
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}
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/**
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* Notes:url加密
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* Created on: 2020/10/18 17:00
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* Created by: dengbw
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* @param $data
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* @return string
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*/
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public function base64url_encode($data)
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{
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return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
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}
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/**
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* Notes:url解密
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* Created on: 2020/10/18 17:01
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* Created by: dengbw
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* @param $data
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* @return array
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*/
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public function base64url_decode($data)
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{
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$str = base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT));
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$url_array = explode('&', $str);
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$vars = array();
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if (is_array($url_array)) {
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foreach ($url_array as $var) {
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$var_array = explode("=", $var);
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$vars[$var_array[0]] = $var_array[1];
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}
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}
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return $vars;
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}
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/**
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* Notes:随机生成数字字母组合
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* Created on: 2020/11/4 12:40
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* Created by: dengbw
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* @param $len
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* @param null $chars
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* @return string
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*/
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public function random_string($len, $chars = null)
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{
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if (is_null($chars)) {
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$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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}
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mt_srand(10000000 * (double)microtime());
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for ($i = 0, $str = '', $lc = strlen($chars) - 1; $i < $len; $i++) {
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$str .= $chars[mt_rand(0, $lc)];
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}
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return $str;
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}
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}
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