anastasis

commit 28abc69a5ca126032362891955096860501a6dc2
parent 500cde85592167b78b0f0d9420bb2043fb252742
Author: Christian Grothoff <christian@grothoff.org>
Date:   Wed, 10 May 2023 01:12:06 +0200

fix bug in TOTP calculation

Diffstat:
M
src/authorization/anastasis_authorization_plugin_totp.c
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/authorization/anastasis_authorization_plugin_totp.c b/src/authorization/anastasis_authorization_plugin_totp.c
@@ -188,7 +188,7 @@ compute_totp (int time_off,
 
     offset = hmac[sizeof (hmac) - 1] & 0x0f;
     for (int count = 0; count < 4; count++)
-      code |= hmac[offset + 3 - count] << (8 * count);
+      code |= ((uint32_t) hmac[offset + 3 - count]) << (8 * count);
     code &= 0x7fffffff;
     /* always use 8 digits (maximum) */
     code = code % 100000000;