PHP模拟百度URL加密解密算法
$time = time() . rand(1000, 9999); $data = "{$time}###https://www.tpxhm.com"; // 被加密信息 $key = '123'; // 密钥 $encrypt = encrypt($data, $key); $decrypt = decrypt($encrypt, $key); echo $encrypt, "\n", $decrypt; function encrypt($data, $key) { $key = md5($key); $x = 0; $len = strlen($data); $l = strlen($key); for ($i = 0; $i < $len; $i++) { if ($x == $l) { $x = 0; } $char.= $key{$x}; $x++; } for ($i = 0; $i < $len; $i++) { $str.= chr(ord($data{$i}) + (ord($char{$i})) % 256); } return base64_encode($str); } function decrypt($data, $key) { $key = md5($key); $x = 0; $data = base64_decode($data); $len = strlen($data); $l = strlen($key); for ($i = 0; $i < $len; $i++) { if ($x == $l) { $x = 0; } $char.= substr($key, $x, 1); $x++; } for ($i = 0; $i < $len; $i++) { if (ord(substr($data, $i, 1)) < ord(substr($char, $i, 1))) { $str.= chr((ord(substr($data, $i, 1)) + 256) - ord(substr($char, $i, 1))); } else { $str.= chr(ord(substr($data, $i, 1)) - ord(substr($char, $i, 1))); } } return $str; }
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