PHP如何實(shí)現(xiàn)加密函數(shù)并支持私人密鑰-創(chuàng)新互聯(lián)

這篇文章主要為大家展示了“PHP如何實(shí)現(xiàn)加密函數(shù)并支持私人密鑰”，內(nèi)容簡(jiǎn)而易懂，條理清晰，希望能夠幫助大家解決疑惑，下面讓小編帶領(lǐng)大家一起研究并學(xué)習(xí)一下“PHP如何實(shí)現(xiàn)加密函數(shù)并支持私人密鑰”這篇文章吧。

成都創(chuàng)新互聯(lián)專(zhuān)注于網(wǎng)站建設(shè)|成都網(wǎng)站改版|優(yōu)化|托管以及網(wǎng)絡(luò)推廣，積累了大量的網(wǎng)站設(shè)計(jì)與制作經(jīng)驗(yàn)，為許多企業(yè)提供了網(wǎng)站定制設(shè)計(jì)服務(wù)，案例作品覆蓋成都濕噴機(jī)等行業(yè)。能根據(jù)企業(yè)所處的行業(yè)與銷(xiāo)售的產(chǎn)品，結(jié)合品牌形象的塑造，量身開(kāi)發(fā)品質(zhì)網(wǎng)站。

在開(kāi)發(fā)PHP系統(tǒng)時(shí),會(huì)員部分往往是一個(gè)必不可少的模塊,而密碼的處理又是不得不面對(duì)的問(wèn)題,PHP 的 Mcrypt 加密庫(kù)又需要額外設(shè)置,很多人都是直接使用md5()函數(shù)加密,這個(gè)方法的確安全,但是因?yàn)閙d5是不可逆加密,無(wú)法還原密碼,因此也有一些不便之處,本文介紹加密函數(shù)支持私鑰,用起來(lái)還是不錯(cuò)的.
代碼如下:
PHP:

<ol><li class="li1"><div class="de1">&nbsp;</div>
</li>
<li class="li1"><div class="de1"><span class="kw2"><?php</span>
 </div>
</li>
<li class="li1"><div class="de1"><span class="co1">// 說(shuō)明：PHP 寫(xiě)的加密函數(shù),支持私人密鑰 </span>
</div>
</li>
<li class="li1"><div class="de1"><span class="co1">// 整理：/tupian/20230522/www.jb51.net </span>
</div>
</li>
<li class="li2"><div class="de2">&nbsp;</div>
</li>
<li class="li1"><div class="de1"><span class="kw2">function</span>
 keyED<span class="br0">(</span>
<span class="re0">$txt</span>
,<span class="re0">$encrypt_key</span>
<span class="br0">)</span>
   </div>
</li>
<li class="li1"><div class="de1"><span class="br0">{</span>
   </div>
</li>
<li class="li1"><div class="de1">    <span class="re0">$encrypt_key</span>
 = <span class="kw3">md5</span>
<span class="br0">(</span>
<span class="re0">$encrypt_key</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li1"><div class="de1">    <span class="re0">$ctr</span>
=<span class="nu0">0</span>
;   </div>
</li>
<li class="li2"><div class="de2">    <span class="re0">$tmp</span>
 = <span class="st0">""</span>
;   </div>
</li>
<li class="li1"><div class="de1">    <span class="kw1">for</span>
 <span class="br0">(</span>
<span class="re0">$i</span>
=<span class="nu0">0</span>
;<span class="re0">$i</span>
<strlen<span class="br0">(</span>
<span class="re0">$txt</span>
<span class="br0">)</span>
;<span class="re0">$i</span>
++<span class="br0">)</span>
   </div>
</li>
<li class="li1"><div class="de1">    <span class="br0">{</span>
   </div>
</li>
<li class="li1"><div class="de1">        <span class="kw1">if</span>
 <span class="br0">(</span>
<span class="re0">$ctr</span>
==<span class="kw3">strlen</span>
<span class="br0">(</span>
<span class="re0">$encrypt_key</span>
<span class="br0">)</span>
<span class="br0">)</span>
 <span class="re0">$ctr</span>
=<span class="nu0">0</span>
;   </div>
</li>
<li class="li1"><div class="de1">        <span class="re0">$tmp</span>
.= <span class="kw3">substr</span>
<span class="br0">(</span>
<span class="re0">$txt</span>
,<span class="re0">$i</span>
,<span class="nu0">1</span>
<span class="br0">)</span>
 ^ <span class="kw3">substr</span>
<span class="br0">(</span>
<span class="re0">$encrypt_key</span>
,<span class="re0">$ctr</span>
,<span class="nu0">1</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li2"><div class="de2">        <span class="re0">$ctr</span>
++;   </div>
</li>
<li class="li1"><div class="de1">    <span class="br0">}</span>
   </div>
</li>
<li class="li1"><div class="de1">    <span class="kw1">return</span>
 <span class="re0">$tmp</span>
;   </div>
</li>
<li class="li1"><div class="de1"><span class="br0">}</span>
   </div>
</li>
<li class="li1"><div class="de1">&nbsp;</div>
</li>
<li class="li2"><div class="de2"><span class="kw2">function</span>
 encrypt<span class="br0">(</span>
<span class="re0">$txt</span>
,<span class="re0">$key</span>
<span class="br0">)</span>
   </div>
</li>
<li class="li1"><div class="de1"><span class="br0">{</span>
   </div>
</li>
<li class="li1"><div class="de1">    <span class="kw3">srand</span>
<span class="br0">(</span>
<span class="br0">(</span>
double<span class="br0">)</span>
<span class="kw3">microtime</span>
<span class="br0">(</span>
<span class="br0">)</span>
*<span class="nu0">1000000</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li1"><div class="de1">    <span class="re0">$encrypt_key</span>
 = <span class="kw3">md5</span>
<span class="br0">(</span>
<span class="kw3">rand</span>
<span class="br0">(</span>
<span class="nu0">0</span>
,<span class="nu0">32000</span>
<span class="br0">)</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li1"><div class="de1">    <span class="re0">$ctr</span>
=<span class="nu0">0</span>
;   </div>
</li>
<li class="li2"><div class="de2">    <span class="re0">$tmp</span>
 = <span class="st0">""</span>
;   </div>
</li>
<li class="li1"><div class="de1">    <span class="kw1">for</span>
 <span class="br0">(</span>
<span class="re0">$i</span>
=<span class="nu0">0</span>
;<span class="re0">$i</span>
<strlen<span class="br0">(</span>
<span class="re0">$txt</span>
<span class="br0">)</span>
;<span class="re0">$i</span>
++<span class="br0">)</span>
   </div>
</li>
<li class="li1"><div class="de1">    <span class="br0">{</span>
   </div>
</li>
<li class="li1"><div class="de1">        <span class="kw1">if</span>
 <span class="br0">(</span>
<span class="re0">$ctr</span>
==<span class="kw3">strlen</span>
<span class="br0">(</span>
<span class="re0">$encrypt_key</span>
<span class="br0">)</span>
<span class="br0">)</span>
 <span class="re0">$ctr</span>
=<span class="nu0">0</span>
;   </div>
</li>
<li class="li1"><div class="de1">        <span class="re0">$tmp</span>
.= <span class="kw3">substr</span>
<span class="br0">(</span>
<span class="re0">$encrypt_key</span>
,<span class="re0">$ctr</span>
,<span class="nu0">1</span>
<span class="br0">)</span>
 . <span class="br0">(</span>
<span class="kw3">substr</span>
<span class="br0">(</span>
<span class="re0">$txt</span>
,<span class="re0">$i</span>
,<span class="nu0">1</span>
<span class="br0">)</span>
 ^ <span class="kw3">substr</span>
<span class="br0">(</span>
<span class="re0">$encrypt_key</span>
,<span class="re0">$ctr</span>
,<span class="nu0">1</span>
<span class="br0">)</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li2"><div class="de2">        <span class="re0">$ctr</span>
++;   </div>
</li>
<li class="li1"><div class="de1">    <span class="br0">}</span>
   </div>
</li>
<li class="li1"><div class="de1">    <span class="kw1">return</span>
 keyED<span class="br0">(</span>
<span class="re0">$tmp</span>
,<span class="re0">$key</span>
<span class="br0">)</span>
; </div>
</li>
<li class="li1"><div class="de1"><span class="br0">}</span>
   </div>
</li>
<li class="li1"><div class="de1">&nbsp;</div>
</li>
<li class="li2"><div class="de2"><span class="kw2">function</span>
 decrypt<span class="br0">(</span>
<span class="re0">$txt</span>
,<span class="re0">$key</span>
<span class="br0">)</span>
   </div>
</li>
<li class="li1"><div class="de1"><span class="br0">{</span>
   </div>
</li>
<li class="li1"><div class="de1">    <span class="re0">$txt</span>
 = keyED<span class="br0">(</span>
<span class="re0">$txt</span>
,<span class="re0">$key</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li1"><div class="de1">    <span class="re0">$tmp</span>
 = <span class="st0">""</span>
;   </div>
</li>
<li class="li1"><div class="de1">    <span class="kw1">for</span>
 <span class="br0">(</span>
<span class="re0">$i</span>
=<span class="nu0">0</span>
;<span class="re0">$i</span>
<strlen<span class="br0">(</span>
<span class="re0">$txt</span>
<span class="br0">)</span>
;<span class="re0">$i</span>
++<span class="br0">)</span>
   </div>
</li>
<li class="li2"><div class="de2">    <span class="br0">{</span>
   </div>
</li>
<li class="li1"><div class="de1">        <span class="re0">$md5</span>
 = <span class="kw3">substr</span>
<span class="br0">(</span>
<span class="re0">$txt</span>
,<span class="re0">$i</span>
,<span class="nu0">1</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li1"><div class="de1">        <span class="re0">$i</span>
++;   </div>
</li>
<li class="li1"><div class="de1">        <span class="re0">$tmp</span>
.= <span class="br0">(</span>
<span class="kw3">substr</span>
<span class="br0">(</span>
<span class="re0">$txt</span>
,<span class="re0">$i</span>
,<span class="nu0">1</span>
<span class="br0">)</span>
 ^ <span class="re0">$md5</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li1"><div class="de1">    <span class="br0">}</span>
   </div>
</li>
<li class="li2"><div class="de2">    <span class="kw1">return</span>
 <span class="re0">$tmp</span>
;   </div>
</li>
<li class="li1"><div class="de1"><span class="br0">}</span>
  </div>
</li>
<li class="li1"><div class="de1">&nbsp;</div>
</li>
<li class="li1"><div class="de1"><span class="re0">$key</span>
 = <span class="st0">"www.yitu.org"</span>
;   </div>
</li>
<li class="li1"><div class="de1"><span class="re0">$string</span>
 = <span class="st0">"我是加密字符"</span>
;   </div>
</li>
<li class="li2"><div class="de2">&nbsp;</div>
</li>
<li class="li1"><div class="de1"><span class="co1">// encrypt $string, and store it in $enc_text   </span>
</div>
</li>
<li class="li1"><div class="de1"><span class="re0">$enc_text</span>
 = encrypt<span class="br0">(</span>
<span class="re0">$string</span>
,<span class="re0">$key</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li1"><div class="de1">&nbsp;</div>
</li>
<li class="li1"><div class="de1"><span class="co1">// decrypt the encrypted text $enc_text, and store it in $dec_text   </span>
</div>
</li>
<li class="li2"><div class="de2"><span class="re0">$dec_text</span>
 = decrypt<span class="br0">(</span>
<span class="re0">$enc_text</span>
,<span class="re0">$key</span>
<span class="br0">)</span>
;   </div>
</li>
<li class="li1"><div class="de1">&nbsp;</div>
</li>
<li class="li1"><div class="de1"><span class="kw3">print</span>
 <span class="st0">"加密的 text : $enc_text <Br> "</span>
;   </div>
</li>
<li class="li1"><div class="de1"><span class="kw3">print</span>
 <span class="st0">"解密的 text : $dec_text <Br> "</span>
;   </div>
</li>
<li class="li1"><div class="de1"><span class="kw2">?></span>
 </div>
</li>
<li class="li2"><div class="de2">&nbsp;</div>
</li>
</ol>

每一次加密后的結(jié)果是不一樣的,大大加強(qiáng)了密碼的安全性.

以上是“PHP如何實(shí)現(xiàn)加密函數(shù)并支持私人密鑰”這篇文章的所有內(nèi)容，感謝各位的閱讀！相信大家都有了一定的了解，希望分享的內(nèi)容對(duì)大家有所幫助，如果還想學(xué)習(xí)更多知識(shí)，歡迎關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道！

網(wǎng)頁(yè)標(biāo)題：PHP如何實(shí)現(xiàn)加密函數(shù)并支持私人密鑰-創(chuàng)新互聯(lián)
標(biāo)題網(wǎng)址：http://muchs.cn/article14/dgepge.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供網(wǎng)站營(yíng)銷(xiāo)、網(wǎng)站維護(hù)、App設(shè)計(jì)、微信小程序、營(yíng)銷(xiāo)型網(wǎng)站建設(shè)、網(wǎng)站建設(shè)

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶(hù)投稿、用戶(hù)轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請(qǐng)盡快告知，我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng)，如需處理請(qǐng)聯(lián)系客服。電話(huà)：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來(lái)源： 創(chuàng)新互聯(lián)