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-rw-r--r--mod/modexp.php33
1 files changed, 33 insertions, 0 deletions
diff --git a/mod/modexp.php b/mod/modexp.php
new file mode 100644
index 000000000..d424b4c39
--- /dev/null
+++ b/mod/modexp.php
@@ -0,0 +1,33 @@
+<?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();
+
+} \ No newline at end of file