马上注册,自学更多教程,下载更多资源。
您需要 登录 才可以下载或查看,没有帐号?立即注册
x
虽说分享是传统的美德,但我们有时候辛辛苦苦写一些程序只是为了卖点小钱,挣点辛苦费,也防止有些没有道德的人倒卖,所以我们不得不对我们的程序进行加密,以下我们来介绍一下如何通过PHP的自定义函数来加密我们的PHP源代码。
第一个方法
- <?php
- function encode_file_contents($filename) {
- $type=strtolower(substr(strrchr($filename,'.'),1));
- if ('php' == $type && is_file($filename) && is_writable($filename)) { // 如果是PHP文件 并且可写 则进行压缩编码
- $contents = file_get_contents($filename); // 判断文件是否已经被编码处理
- $contents = php_strip_whitespace($filename);
-
- // 去除PHP头部和尾部标识
- $headerPos = strpos($contents,'<?php');
- $footerPos = strrpos($contents,'?>');
- $contents = substr($contents, $headerPos + 5, $footerPos - $headerPos);
- $encode = base64_encode(gzdeflate($contents)); // 开始编码
- $encode = '<?php'."\n eval(gzinflate(base64_decode("."'".$encode."'".")));\n\n?>";
-
- return file_put_contents($filename, $encode);
- }
- return false;
- }
-
- //调用函数
- $filename = 'dam.php';
- encode_file_contents($filename);
- echo "OK,加密完成!"
- ?>
复制代码
第二个方法
- <?php
-
- function RandAbc($length = "") { // 返回随机字符串
- $str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
- return str_shuffle($str);
- }
-
- $filename = 'index.php'; //要加密的文件
- $T_k1 = RandAbc(); //随机密匙1
- $T_k2 = RandAbc(); //随机密匙2
- $vstr = file_get_contents($filename);
- $v1 = base64_encode($vstr);
- $c = strtr($v1, $T_k1, $T_k2); //根据密匙替换对应字符。
- $c = $T_k1.$T_k2.$c;
- $q1 = "O00O0O";
- $q2 = "O0O000";
- $q3 = "O0OO00";
- $q4 = "OO0O00";
- $q5 = "OO0000";
- $q6 = "O00OO0";
- $s = '
- .$q6.'=urldecode("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A");
- .$q1.'=
- .$q6.'{3}.
- .$q6.'{6}.
- .$q6.'{33}.
- .$q6.'{30};
- .$q3.'=
- .$q6.'{33}.
- .$q6.'{10}.
- .$q6.'{24}.
- .$q6.'{10}.
- .$q6.'{24};
- .$q4.'=
- .$q3.'{0}.
- .$q6.'{18}.
- .$q6.'{3}.
- .$q3.'{0}.
- .$q3.'{1}.
- .$q6.'{24};
- .$q5.'=
- .$q6.'{7}.
- .$q6.'{13};
- .$q1.'.=
- .$q6.'{22}.
- .$q6.'{36}.
- .$q6.'{29}.
- .$q6.'{26}.
- .$q6.'{30}.
- .$q6.'{32}.
- .$q6.'{35}.
- .$q6.'{26}.
- .$q6.'{30};eval(
- .$q1.'("'.base64_encode('
- .$q2.'="'.$c.'";eval(\'?>\'.
- .$q1.'(
- .$q3.'(
- .$q4.'(
- .$q2.',
- .$q5.'*2),
- .$q4.'(
- .$q2.',
- .$q5.',
- .$q5.'),
- .$q4.'(
- .$q2.',0,
- .$q5.'))));').'"));';
-
- $s = '<?php '."\n".$s."\n".' ?>';
- //echo $s;
- // 生成 加密后的PHP文件
- $fpp1 = fopen('temp_'.$filename, 'w');
- fwrite($fpp1, $s) or die('写文件错误');
-
- ?>
复制代码
第三个方法
- <?php
-
- class text_auth
- {
- var $n_iter;
-
- function text_auth()
- {
- $this->setIter(32);
- }
-
- function setIter($n_iter)
- {
- $this->n_iter = $n_iter;
- }
-
- function getIter()
- {
- return $this->n_iter;
- }
-
- function encrypt($data, $key)
- {
- $n = $this->_resize($data, 4);
-
- $data_long[0] = $n;
- $n_data_long = $this->_str2long(1, $data, $data_long);
-
- $n = count($data_long);
- if (($n & 1) == 1) {
- $data_long[$n] = chr(0);
- $n_data_long++;
- }
-
- $this->_resize($key, 16, true);
- if ( '' == $key )
- $key = '0000000000000000';
-
- $n_key_long = $this->_str2long(0, $key, $key_long);
-
- $enc_data = '';
- $w = array(0, 0);
- $j = 0;
- $k = array(0, 0, 0, 0);
- for ($i = 0; $i < $n_data_long; ++$i) {
- if ($j + 4 <= $n_key_long) {
- $k[0] = $key_long[$j];
- $k[1] = $key_long[$j + 1];
- $k[2] = $key_long[$j + 2];
- $k[3] = $key_long[$j + 3];
- } else {
- $k[0] = $key_long[$j % $n_key_long];
- $k[1] = $key_long[($j + 1) % $n_key_long];
- $k[2] = $key_long[($j + 2) % $n_key_long];
- $k[3] = $key_long[($j + 3) % $n_key_long];
- }
- $j = ($j + 4) % $n_key_long;
-
- $this->_encipherLong($data_long[$i], $data_long[++$i], $w, $k);
-
- $enc_data .= $this->_long2str($w[0]);
- $enc_data .= $this->_long2str($w[1]);
- }
-
- return $enc_data;
- }
-
- function decrypt($enc_data, $key)
- {
- $n_enc_data_long = $this->_str2long(0, $enc_data, $enc_data_long);
-
- $this->_resize($key, 16, true);
- if ( '' == $key )
- $key = '0000000000000000';
-
- $n_key_long = $this->_str2long(0, $key, $key_long);
-
- $data = '';
- $w = array(0, 0);
- $j = 0;
- $len = 0;
- $k = array(0, 0, 0, 0);
- $pos = 0;
-
- for ($i = 0; $i < $n_enc_data_long; $i += 2) {
- if ($j + 4 <= $n_key_long) {
- $k[0] = $key_long[$j];
- $k[1] = $key_long[$j + 1];
- $k[2] = $key_long[$j + 2];
- $k[3] = $key_long[$j + 3];
- } else {
- $k[0] = $key_long[$j % $n_key_long];
- $k[1] = $key_long[($j + 1) % $n_key_long];
- $k[2] = $key_long[($j + 2) % $n_key_long];
- $k[3] = $key_long[($j + 3) % $n_key_long];
- }
- $j = ($j + 4) % $n_key_long;
-
- $this->_decipherLong($enc_data_long[$i], $enc_data_long[$i + 1], $w, $k);
-
- if (0 == $i) {
- $len = $w[0];
- if (4 <= $len) {
- $data .= $this->_long2str($w[1]);
- } else {
- $data .= substr($this->_long2str($w[1]), 0, $len % 4);
- }
- } else {
- $pos = ($i - 1) * 4;
- if ($pos + 4 <= $len) {
- $data .= $this->_long2str($w[0]);
-
- if ($pos + 8 <= $len) {
- $data .= $this->_long2str($w[1]);
- } elseif ($pos + 4 < $len) {
- $data .= substr($this->_long2str($w[1]), 0, $len % 4);
- }
- } else {
- $data .= substr($this->_long2str($w[0]), 0, $len % 4);
- }
- }
- }
- return $data;
- }
-
- function _encipherLong($y, $z, &$w, &$k)
- {
- $sum = (integer) 0;
- $delta = 0x9E3779B9;
- $n = (integer) $this->n_iter;
-
- while ($n-- > 0) {
- $y = $this->_add($y,
- $this->_add($z << 4 ^ $this->_rshift($z, 5), $z) ^
- $this->_add($sum, $k[$sum & 3]));
- $sum = $this->_add($sum, $delta);
- $z = $this->_add($z,
- $this->_add($y << 4 ^ $this->_rshift($y, 5), $y) ^
- $this->_add($sum, $k[$this->_rshift($sum, 11) & 3]));
- }
-
- $w[0] = $y;
- $w[1] = $z;
- }
-
- function _decipherLong($y, $z, &$w, &$k)
- {
- $sum = 0xC6EF3720;
- $delta = 0x9E3779B9;
- $n = (integer) $this->n_iter;
-
- while ($n-- > 0) {
- $z = $this->_add($z,
- -($this->_add($y << 4 ^ $this->_rshift($y, 5), $y) ^
- $this->_add($sum, $k[$this->_rshift($sum, 11) & 3])));
- $sum = $this->_add($sum, -$delta);
- $y = $this->_add($y,
- -($this->_add($z << 4 ^ $this->_rshift($z, 5), $z) ^
- $this->_add($sum, $k[$sum & 3])));
- }
-
- $w[0] = $y;
- $w[1] = $z;
- }
-
- function _resize(&$data, $size, $nonull = false)
- {
- $n = strlen($data);
- $nmod = $n % $size;
- if ( 0 == $nmod )
- $nmod = $size;
-
- if ($nmod > 0) {
- if ($nonull) {
- for ($i = $n; $i < $n - $nmod + $size; ++$i) {
- $data[$i] = $data[$i % $n];
- }
- } else {
- for ($i = $n; $i < $n - $nmod + $size; ++$i) {
- $data[$i] = chr(0);
- }
- }
- }
- return $n;
- }
-
- function _hex2bin($str)
- {
- $len = strlen($str);
- return pack('H' . $len, $str);
- }
-
- function _str2long($start, &$data, &$data_long)
- {
- $n = strlen($data);
-
- $tmp = unpack('N*', $data);
- $j = $start;
-
- foreach ($tmp as $value)
- $data_long[$j++] = $value;
-
- return $j;
- }
-
- function _long2str($l)
- {
- return pack('N', $l);
- }
-
- function _rshift($integer, $n)
- {
- if (0xffffffff < $integer || -0xffffffff > $integer) {
- $integer = fmod($integer, 0xffffffff + 1);
- }
-
- if (0x7fffffff < $integer) {
- $integer -= 0xffffffff + 1.0;
- } elseif (-0x80000000 > $integer) {
- $integer += 0xffffffff + 1.0;
- }
-
- if (0 > $integer) {
- $integer &= 0x7fffffff;
- $integer >>= $n;
- $integer |= 1 << (31 - $n);
- } else {
- $integer >>= $n;
- }
-
- return $integer;
- }
-
- function _add($i1, $i2)
- {
- $result = 0.0;
-
- foreach (func_get_args() as $value) {
- if (0.0 > $value) {
- $value -= 1.0 + 0xffffffff;
- }
-
- $result += $value;
- }
-
- if (0xffffffff < $result || -0xffffffff > $result) {
- $result = fmod($result, 0xffffffff + 1);
- }
-
- if (0x7fffffff < $result) {
- $result -= 0xffffffff + 1.0;
- } elseif (-0x80000000 > $result) {
- $result += 0xffffffff + 1.0;
- }
- return $result;
- }
- }
- ?>
- 使用方法参考如下:
- // 加密过程
- view sourceprint?
- $text_file = S_ROOT . './456.php';
- $str = @file_get_contents($text_file);
-
- require_once S_ROOT . "./text_auth.php";
- $text_auth = new text_auth(64);
-
- $str = $text_auth->encrypt($str, "qianyunlai.com");
-
- $filename = S_ROOT . './789.php'; // 加密后的文本为二进制,普通的文本编辑器无法正常查看
- file_put_contents($filename, $str);
- // 解密过程
- view sourceprint
- ?01 $text_file = S_ROOT . './789.php';
- $str = @file_get_contents($text_file);
-
- require_once S_ROOT . "./text_auth.php";
- $text_auth = new text_auth(64);
-
- $str = $text_auth->decrypt($str, "qianyunlai.com");
-
- $filename = S_ROOT . './456.php';
- file_put_contents($filename, $str);
复制代码
上一篇:用php输出混淆后的js代码 下一篇:PHP表单提交引号前自动加反斜杠的三种关闭php魔术引号方法 |
|