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MISP
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Merge branch 'hotfix-2.3.143'

pull/712/head
Iglocska 2015-10-15 17:45:03 +02:00
parent 136daa1be1 4a358c9fee
commit 1aedfebf33
1 changed files with 0 additions and 44 deletions
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44
app/Lib/Tools/BitCoinTool.php
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<?php
// based on the php implementation of the BTC address validation example from
// http://rosettacode.org/wiki/Bitcoin/address_validation
class BitCoinTool {
function validate($address){
$decoded = $this->decodeBase58($address);
if ($decoded === false) return false;
$d1 = hash("sha256", substr($decoded,0,21), true);
$d2 = hash("sha256", $d1, true);
if(substr_compare($decoded, $d2, 21, 4)){
return false;
}
return true;
}
function decodeBase58($input) {
$alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
$out = array_fill(0, 25, 0);
for($i=0;$i<strlen($input);$i++){
if(($p=strpos($alphabet, $input[$i]))===false){
return false;
}
$c = $p;
for ($j = 25; $j--; ) {
$c += (int)(58 * $out[$j]);
$out[$j] = (int)($c % 256);
$c /= 256;
$c = (int)$c;
}
if($c != 0){
return false;
}
}
$result = "";
foreach($out as $val){
$result .= chr($val);
}
return $result;
}
}