friendica-github/mod/modexp.php

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634 B
PHP
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<?php
include('library/asn1.php');
function modexp_init(&$a) {
if($a->argc != 2)
killme();
$nick = $a->argv[1];
$r = q("SELECT `pubkey` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
dbesc($nick)
);
if(! count($r))
killme();
$lines = explode("\n",$r[0]['pubkey']);
unset($lines[0]);
unset($lines[count($lines)]);
$x = base64_decode(implode('',$lines));
$r = ASN_BASE::parseASNString($x);
$m = $r[0]->asnData[1]->asnData[0]->asnData[0]->asnData;
$e = $r[0]->asnData[1]->asnData[0]->asnData[1]->asnData;
header("Content-type: application/magic-public-key");
echo 'RSA' . '.' . $m . '.' . $e ;
killme();
}