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。
方法一:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | <?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!" ?> |
加密方法二:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | <?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'); ?> |
加密方法三:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 | <?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); |