Timing vulnerability in ECDSA signature generation (CVE-2018-0735)
authorPauli <paul.dale@oracle.com>
Fri, 26 Oct 2018 00:54:58 +0000 (10:54 +1000)
committerPauli <paul.dale@oracle.com>
Sun, 28 Oct 2018 21:47:22 +0000 (07:47 +1000)
commit99540ec79491f59ed8b46b4edf130e17dc907f52
treeabe34d519799a211c9135a3a882f7ba849774f0d
parenta9cfb8c2aa7254a4aa6a1716909e3f8cb78049b6
Timing vulnerability in ECDSA signature generation (CVE-2018-0735)

Preallocate an extra limb for some of the big numbers to avoid a reallocation
that can potentially provide a side channel.

Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/7486)
crypto/ec/ec_mult.c