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论坛 -> Web应用开发
斑竹:bodies |
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2009/7/22 9:29:39 |
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PHP代码加密解密(交流)
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PHP代码如下:
<?php $key = "This is supposed to be a secret key !!!"; function keyED($txt,$encrypt_key) { $encrypt_key = md5($encrypt_key); $ctr=0; $tmp = ""; for ($i=0;$i<strlen($txt);$i++) { if ($ctr==strlen($encrypt_key)) $ctr=0; $tmp.= substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1); $ctr++; } return $tmp; } function encrypt($txt,$key) { srand((double)microtime()*1000000); $encrypt_key = md5(rand(0,32000)); $ctr=0; $tmp = ""; for ($i=0;$i<strlen($txt);$i++) { if ($ctr==strlen($encrypt_key)) $ctr=0; $tmp.= substr($encrypt_key,$ctr,1) . (substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1)); $ctr++; } return keyED($tmp,$key); } function decrypt($txt,$key) { $txt = keyED($txt,$key); $tmp = ""; for ($i=0;$i<strlen($txt);$i++) { $md5 = substr($txt,$i,1); $i++; $tmp.= (substr($txt,$i,1) ^ $md5); } return $tmp; } $string = "Hello World !!!"; // encrypt $string, and store it in $enc_text $enc_text = encrypt($string,$key); // decrypt the encrypted text $enc_text, and store it in $dec_text $dec_text = decrypt($enc_text,$key); print "Original text : $string <Br>"; print "Encrypted text : $enc_text <Br>"; print "Decrypted text : $dec_text <Br>"; ?>
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虚拟主机- 虚拟主机全国五强,专业的虚拟主机服务提供商,ASP虚拟主.. 时代网(时代互联)是中国首家JAVA虚拟主机提供商和ASP.NET虚拟主机服务提供商,全面支持:JSP虚拟主机,PHP虚拟主机,ASP虚拟主机,ASP.NET虚拟主机,PERL虚拟主机,JAVA 虚拟主机.近50项全系列网站管理工具。机位于电信,网通,香港超级数据港,20G... www.now.cn/vhost |
作者: |
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2009/8/28 14:55:18 |
1楼: |
醉翁之意不在酒
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