1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283 | <?phpfunction authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) { $ckey_length = 4; $key = md5('' != $key ? $key : "62a37a4d"); $keya = md5(substr($key, 0, 16)); $keyb = md5(substr($key, 16, 16)); $keyc = $ckey_length ? ('DECODE' == $operation ? substr($string, 0, $ckey_length) : substr(md5(microtime()), -$ckey_length)) : ''; $cryptkey = $keya . md5($keya . $keyc); $key_length = strlen($cryptkey); $string = 'DECODE' == $operation ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0) . substr(md5($string . $keyb), 0, 16) . $string; $string_length = strlen($string); $result = ''; $box = range(0, 255); $rndkey = array(); for ($i = 0; $i <= 255; ++$i) { $rndkey[$i] = ord($cryptkey[$i % $key_length]); } for ($j = $i = 0; $i < 256; ++$i) { $j = ($j + $box[$i] + $rndkey[$i]) % 256; $tmp = $box[$i]; $box[$i] = $box[$j]; $box[$j] = $tmp; } for ($a = $j = $i = 0; $i < $string_length; ++$i) { $a = ($a + 1) % 256; $j = ($j + $box[$a]) % 256; $tmp = $box[$a]; $box[$a] = $box[$j]; $box[$j] = $tmp; $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256])); } if ('DECODE' == $operation) { if ((0 == substr($result, 0, 10) || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26) . $keyb), 0, 16)) { return substr($result, 26); } else { return ''; } } else { return $keyc . str_replace('=', '', base64_encode($result)); }}$cloud_transtoken = ""$token = authcode($cloud_transtoken, "DECODE");function build() { $file = "aaa"; $path = "/test.txt" $string = (md5($file) . $path . $token); $sign = md5($string) $file_ = gzcompress($file); // print($file_); $file__ = base64_encode($file_); // print($file__); $ret = array( "file" => $file__, "path" => $path, "sign" => $sign ); print(serialize($ret));}// build();/*$gz = function_exists('gzcompress') && function_exists('gzuncompress');if ($gz) { echo "yes";} else { echo "no";}*/ |