161 lines
4.5 KiB
PHP
161 lines
4.5 KiB
PHP
<?php
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/**
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* Password.php
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*/
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namespace UElearning\Util;
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/**
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* 密碼以及加密相關的函式庫
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*
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* 使用範例:
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*
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* require_once __DIR__.'/../config.php';
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* require_once UELEARNING_LIB_ROOT.'/Util/Password.php';
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* use UElearning\Util;
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*
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* $passUtil = new Util\Password();
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* echo $passUtil->generator(10); // 產生10個字的密碼
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* echo $passUtil->encrypt('abc'); // 加密此字串
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*
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* // 核對與加密後是否吻合
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* echo $passUtil->checkSame('a9993e364706816aba3e25717850c26c9cd0d89d', 'abc');
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*
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* @author Yuan Chiu <chyuaner@gmail.com>
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* @version 2.0.0
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* @package UElearning
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* @subpackage Util
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*/
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class Password {
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/**
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* 取得亂數字串
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*
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* The MIT License
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*
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* Copyright (c) 2007 Tsung-Hao
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author tsung http://plog.longwin.com.tw
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* @desc http://blog.longwin.com.tw/2007/11/php_snap_image_block_2007/
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* @param int $password_len 字串長度(幾個字)
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* @return string 亂數產生產生後的字串
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*
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*/
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public function generator($password_len){
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$password = '';
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// remove o,0,1,l
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$word = 'abcdefghijkmnpqrstuvwxyz!@#%^*()-ABCDEFGHIJKLMNPQRSTUVWXYZ;{}[]23456789';
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$len = strlen($word);
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for ($i = 0; $i < $password_len; $i++) {
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$password .= $word[rand() % $len];
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}
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return $password;
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}
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/**
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* 加密這段字
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*
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* @param string $text 原本字串
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* @return string 加密後結果字串
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* @since 2.0.0
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*/
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public function encrypt($text){
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// 從config.php設定檔取得預設加密方式
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switch(ENCRYPT_MODE){
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case "MD5":
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case "md5":
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return $this->md5Encrypt($text);
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break;
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case "SHA1":
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case "sha1":
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return $this->sha1Encrypt($text);
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break;
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case "CRYPT":
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case "crypt":
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return $this->cryptEncrypt($text);
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break;
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default:
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return $text;
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break;
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}
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}
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/**
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* 加密這段字
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*
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* @param string $encrypted 已加密字串
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* @param string $text 原本字串
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* @return bool true代表與加密後字串一樣
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* @since 2.0.0
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*/
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public function checkSame($encrypted, $text) {
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// 加密此字串
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$textToEncypt = $this->encrypt($text);
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// 判斷是否吻合
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if( $textToEncypt == $encrypted ) {
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return true;
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}
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else {
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return false;
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}
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}
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// ------------------------------------------------------------------------
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/**
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* MD5加密這段字
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*
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* @param string $text 原本字串
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* @return string 加密後結果字串
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* @since 2.0.0
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*/
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public function md5Encrypt($text){
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return md5($text);
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}
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/**
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* SHA1加密這段字
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*
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* @param string $text 原本字串
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* @return string 加密後結果字串
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* @since 2.0.0
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*/
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public function sha1Encrypt($text){
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return sha1($text);
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}
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/**
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* CRYPT加密這段字
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*
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* @param string $text 原本字串
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* @return string 加密後結果字串
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* @since 2.0.0
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*/
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public function cryptEncrypt($text){
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return crypt($text);
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}
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}
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