fix #1062: use correct length for base32 keys

we wrongly assumed the keys to be 32 chars long,
instead of 16

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

diff --git a/PVE/AccessControl.pm b/PVE/AccessControl.pm
index 0af92d7..0b64374 100644 (file)
--- a/PVE/AccessControl.pm
+++ b/PVE/AccessControl.pm
@@ -1299,7 +1299,7 @@ sub oath_verify_otp {
     foreach my $k (PVE::Tools::split_list($keys)) {
        # Note: we generate 3 values to allow small time drift
        my $binkey;
-       if ($k =~ /^[A-Z2-7=]{32}$/) {
+       if ($k =~ /^[A-Z2-7=]{16}$/) {
            $binkey = MIME::Base32::decode_rfc3548($k);
        } elsif ($k =~ /^[A-Fa-f0-9]{40}$/) {
            $binkey = pack('H*', $k);