tree 6d014c67e2a900b253c5c6b1f0a922b35be09095
parent df28c3acf120361f260c8a91b902e089ff213bb8
author Brian Smith <brian@briansmith.org> 1457664375 -1000
committer David Benjamin <davidben@google.com> 1457723600 +0000

Require compressed x EC coordinate to be a field element.

Don't try to fix a bad |x| coordinate by reducing it. Instead, just
fail. This also makes the code clearer; in particular, it was confusing
why |x_| was used for some calculations when it seems like |x| was just
as good or better.

Change-Id: I9a6911f0d2bd72852a26b46f3828eb5ba3ef924f
Reviewed-on: https://boringssl-review.googlesource.com/7440
Reviewed-by: David Benjamin <davidben@google.com>