tree 70636531040345f95c9bda89df5702a19ba0cd23
parent bfb38b1a3c5e37d43188bbd02365a87bebc8d122
author Brian Smith <brian@briansmith.org> 1448497161 -1000
committer David Benjamin <davidben@google.com> 1457549923 +0000

Remove |EC_POINT::Z_is_one|.

Having |Z_is_one| be out of sync with |Z| could potentially be a very
bad thing, and in the past there have been multiple bugs of this sort,
including one currently in p256-x86_64.c (type confusion: Montgomery-
encoded vs unencoded). Avoid the issue entirely by getting rid of
|Z_is_one|.

Change-Id: Icb5aa0342df41d6bc443f15f952734295d0ee4ba
Reviewed-on: https://boringssl-review.googlesource.com/6576
Reviewed-by: David Benjamin <davidben@google.com>