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Add hidden service v3 keygen and parser for base64 encoded secret keys

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This commit is contained in:
Daniel Winzen
2018-11-25 14:36:28 +01:00
parent f0afbe14c9
commit 36fc7103cb
2 changed files with 145 additions and 83 deletions
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190
var/www/common.php
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@ -1,4 +1,5 @@
<?php
require_once(__DIR__ . '/vendor/autoload.php');
const DBHOST='localhost'; // Database host
const DBUSER='hosting'; // Database user
const DBPASS='MY_PASSWORD'; // Database password
@ -87,31 +88,44 @@ server {
}
';
function get_onion($pkey){
function get_onion_v2($pkey) : string {
$keyData = openssl_pkey_get_details($pkey);
return base32_encode(hex2bin(substr(sha1(substr(base64_decode(substr($keyData['key'], 27, -26)), 22)), 0, 20)));
$pk = base64_decode(substr($keyData['key'], 27, -26));
$skipped_first_22 = substr($pk, 22);
$first_80_bits_of_sha1 = hex2bin(substr(sha1($skipped_first_22), 0, 20));
return base32_encode($first_80_bits_of_sha1);
}
function base32_encode($input) {
$map = array(
function get_onion_v3(string $sk) : string {
if(PHP_INT_SIZE === 4){
$pk = ParagonIE_Sodium_Core32_Ed25519::sk_to_pk($sk);
}else{
$pk = ParagonIE_Sodium_Core_Ed25519::sk_to_pk($sk);
}
$checksum = substr(hash('SHA3-256', '.onion checksum' . $pk . hex2bin('03'), true), 0, 2);
return base32_encode($pk . $checksum . hex2bin('03'));
}
function base32_encode(string $input) : string {
$map = [
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', // 7
'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', // 15
'q', 'r', 's', 't', 'u', 'v', 'w', 'x', // 23
'y', 'z', '2', '3', '4', '5', '6', '7', // 31
);
];
if(empty($input)){
return '';
}
$input = str_split($input);
$binaryString = '';
$c=count($input);
$c = count($input);
for($i = 0; $i < $c; ++$i) {
$binaryString .= str_pad(decbin(ord($input[$i])), 8, '0', STR_PAD_LEFT);
}
$fiveBitBinaryArray = str_split($binaryString, 5);
$base32 = '';
$i=0;
$c=count($fiveBitBinaryArray);
$i = 0;
$c = count($fiveBitBinaryArray);
while($i < $c) {
$base32 .= $map[bindec($fiveBitBinaryArray[$i])];
++$i;
@ -119,85 +133,85 @@ function base32_encode($input) {
return $base32;
}
function send_captcha(){
function send_captcha() {
global $db;
if(!CAPTCHA || !extension_loaded('gd')){
return;
}
$captchachars='ABCDEFGHJKMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz23456789';
$length=strlen($captchachars)-1;
$code='';
for($i=0;$i<5;++$i){
$code.=$captchachars[mt_rand(0, $length)];
$captchachars = 'ABCDEFGHJKMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz23456789';
$length = strlen($captchachars)-1;
$code = '';
for($i = 0; $i < 5; ++$i){
$code .= $captchachars[mt_rand(0, $length)];
}
$randid=mt_rand();
$time=time();
$stmt=$db->prepare('INSERT INTO captcha (id, time, code) VALUES (?, ?, ?);');
$randid = mt_rand();
$time = time();
$stmt = $db->prepare('INSERT INTO captcha (id, time, code) VALUES (?, ?, ?);');
$stmt->execute([$randid, $time, $code]);
echo "<tr><td>Copy: ";
if(CAPTCHA===1){
$im=imagecreatetruecolor(55, 24);
$bg=imagecolorallocate($im, 0, 0, 0);
$fg=imagecolorallocate($im, 255, 255, 255);
if(CAPTCHA === 1){
$im = imagecreatetruecolor(55, 24);
$bg = imagecolorallocate($im, 0, 0, 0);
$fg = imagecolorallocate($im, 255, 255, 255);
imagefill($im, 0, 0, $bg);
imagestring($im, 5, 5, 5, $code, $fg);
echo '<img width="55" height="24" src="data:image/gif;base64,';
}elseif(CAPTCHA===2){
$im=imagecreatetruecolor(55, 24);
$bg=imagecolorallocate($im, 0, 0, 0);
$fg=imagecolorallocate($im, 255, 255, 255);
}elseif(CAPTCHA === 2){
$im = imagecreatetruecolor(55, 24);
$bg = imagecolorallocate($im, 0, 0, 0);
$fg = imagecolorallocate($im, 255, 255, 255);
imagefill($im, 0, 0, $bg);
imagestring($im, 5, 5, 5, $code, $fg);
$line=imagecolorallocate($im, 255, 255, 255);
for($i=0;$i<2;++$i){
$line = imagecolorallocate($im, 255, 255, 255);
for($i = 0; $i < 2; ++$i){
imageline($im, 0, mt_rand(0, 24), 55, mt_rand(0, 24), $line);
}
$dots=imagecolorallocate($im, 255, 255, 255);
for($i=0;$i<100;++$i){
$dots = imagecolorallocate($im, 255, 255, 255);
for($i = 0; $i < 100; ++$i){
imagesetpixel($im, mt_rand(0, 55), mt_rand(0, 24), $dots);
}
echo '<img width="55" height="24" src="data:image/gif;base64,';
}else{
$im=imagecreatetruecolor(150, 200);
$bg=imagecolorallocate($im, 0, 0, 0);
$fg=imagecolorallocate($im, 255, 255, 255);
$im = imagecreatetruecolor(150, 200);
$bg = imagecolorallocate($im, 0, 0, 0);
$fg = imagecolorallocate($im, 255, 255, 255);
imagefill($im, 0, 0, $bg);
$line=imagecolorallocate($im, 100, 100, 100);
for($i=0;$i<5;++$i){
$line = imagecolorallocate($im, 100, 100, 100);
for($i = 0; $i < 5; ++$i){
imageline($im, 0, mt_rand(0, 200), 150, mt_rand(0, 200), $line);
}
$dots=imagecolorallocate($im, 200, 200, 200);
for($i=0;$i<1000;++$i){
$dots = imagecolorallocate($im, 200, 200, 200);
for($i = 0; $i < 1000; ++$i){
imagesetpixel($im, mt_rand(0, 150), mt_rand(0, 200), $dots);
}
$chars=[];
for($i=0;$i<10;++$i){
$found=false;
$chars = [];
for($i = 0; $i < 10; ++$i){
$found = false;
while(!$found){
$x=mt_rand(10, 140);
$y=mt_rand(10, 180);
$found=true;
$x = mt_rand(10, 140);
$y = mt_rand(10, 180);
$found = true;
foreach($chars as $char){
if($char['x']>=$x && ($char['x']-$x)<25){
$found=false;
}elseif($char['x']<$x && ($x-$char['x'])<25){
$found=false;
if($char['x'] >= $x && ($char['x'] - $x) < 25){
$found = false;
}elseif($char['x'] < $x && ($x - $char['x']) < 25){
$found = false;
}
if(!$found){
if($char['y']>=$y && ($char['y']-$y)<25){
if($char['y'] >= $y && ($char['y'] - $y) < 25){
break;
}elseif($char['y']<$y && ($y-$char['y'])<25){
}elseif($char['y'] < $y && ($y - $char['y']) < 25){
break;
}else{
$found=true;
$found = true;
}
}
}
}
$chars[]=['x', 'y'];
$chars[$i]['x']=$x;
$chars[$i]['y']=$y;
if($i<5){
$chars []= ['x', 'y'];
$chars[$i]['x'] = $x;
$chars[$i]['y'] = $y;
if($i < 5){
imagechar($im, 5, $chars[$i]['x'], $chars[$i]['y'], $captchachars[mt_rand(0, $length)], $fg);
}else{
imagechar($im, 5, $chars[$i]['x'], $chars[$i]['y'], $code[$i-5], $fg);
@ -205,7 +219,7 @@ function send_captcha(){
}
$follow=imagecolorallocate($im, 200, 0, 0);
imagearc($im, $chars[5]['x']+4, $chars[5]['y']+8, 16, 16, 0, 360, $follow);
for($i=5;$i<9;++$i){
for($i = 5; $i < 9; ++$i){
imageline($im, $chars[$i]['x']+4, $chars[$i]['y']+8, $chars[$i+1]['x']+4, $chars[$i+1]['y']+8, $follow);
}
echo '<img width="150" height="200" src="data:image/gif;base64,';
@ -234,16 +248,16 @@ function check_login(){
return $user;
}
function get_system_hash($pass){
$chars='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789./';
$salt='';
for($i=0;$i<16;++$i){
$salt.=$chars[random_int(0, strlen($chars)-1)];
function get_system_hash($pass) {
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789./';
$salt = '';
for($i = 0; $i < 16; ++$i){
$salt .= $chars[random_int(0, strlen($chars)-1)];
}
return crypt($pass, '$6$'.$salt.'$');
return crypt($pass, '$6$' . $salt . '$');
}
function check_captcha_error(){
function check_captcha_error() {
global $db;
if(CAPTCHA){
if(!isset($_REQUEST['challenge'])){
@ -300,3 +314,57 @@ HiddenServicePort 80 unix:/var/run/nginx/$socket
file_put_contents("/etc/tor/instances/$key/torrc", $torrc);
exec("service tor@$key reload");
}
function private_key_to_onion(string $priv_key) : array {
$ok = true;
$message = '';
$onion = '';
$priv_key = trim($priv_key);
if(($pkey = openssl_pkey_get_private($priv_key)) !== false){
$details=openssl_pkey_get_details($pkey);
if($details['bits'] !== 1024){
$message = 'Error: private key not of bitsize 1024.';
$ok = false;
}else{
$onion = get_onion_v2($pkey);
}
openssl_pkey_free($pkey);
return ['ok' => $ok, 'message' => $message, 'onion' => $onion];
} elseif(($priv = base64_decode($priv_key, true)) !== false){
if(strpos($priv, '== ed25519v1-secret: type0 ==' . hex2bin('000000')) !== 0 || strlen($priv) !== 96){
$message = 'Error: v3 secret key invalid.';
$ok = false;
} else {
$onion = get_onion_v3(substr($priv, 32));
}
return ['ok' => $ok, 'message' => $message, 'onion' => $onion];
}
$message = 'Error: private key invalid.';
$ok = false;
return ['ok' => $ok, 'message' => $message, 'onion' => $onion];
}
function generate_new_onion(int $version = 3) : array {
$priv_key = '';
$onion = '';
if($version === 2){
$pkey = openssl_pkey_new(['private_key_bits' => 1024, 'private_key_type' => OPENSSL_KEYTYPE_RSA]);
openssl_pkey_export($pkey, $priv_key);
$onion = get_onion_v2($pkey);
openssl_pkey_free($pkey);
} else {
$seed = random_bytes(32);
$sk = ed25519_seckey_expand($seed);
$priv_key = base64_encode('== ed25519v1-secret: type0 ==' . hex2bin('000000') . $sk);
$onion = get_onion_v3($sk);
}
return ['priv_key' => $priv_key, 'onion' => $onion];
}
function ed25519_seckey_expand(string $seed) : string {
$sk = hash('sha512', substr($seed, 0, 32), true);
$sk[0] = chr(ord($sk[0]) & 248);
$sk[31] = chr(ord($sk[31]) & 63);
$sk[31] = chr(ord($sk[31]) | 64);
return $sk;
}