tree 7a14eff476e22e2bc1b332764eca83ef5259b6e6
parent 047ff6428714afed823815e53c26ffc3e9bf8cd3
author David Benjamin <davidben@google.com> 1626474242 -0400
committer Boringssl LUCI CQ <boringssl-scoped@luci-project-accounts.iam.gserviceaccount.com> 1629837416 +0000

Add a CBB_add_zeros helper.

We fill in placeholder values of all zeros fairly often in TLS now,
as workarounds for messages being constructed in the wrong order.
draft-12 of ECH adds even more of these. Add a helper so we don't need
to interrupt an || chain with a memset.

Change-Id: Id4f9d988ee67598645a01637cc9515b475c1aec2
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/48909
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>