If we're to have any hope of fixing EVP_CIPHER_CTX's calling convention, we
need to be able to change the shape of its method table.
Looking back, it looks like we exported this in
https://boringssl-review.googlesource.com/4330, for OpenSSH. I don't
remember exactly what OpenSSH was doing, but I see in this commit, they
removed a bunch of custom EVP_CIPHERs which would definitely have
required an exported EVP_CIPHER struct:
cdccebdf85
That's been gone for a while now, so hopefully we can hide it again. (If
a project needs a cipher not implemented by OpenSSL, it's not strictly
necessarily to make a custom EVP_CIPHER. It might be convenient to reuse
the abstraction, but you can always just call your own APIs directly.)
Update-Note: EVP_CIPHER is now opaque. Use accessors instead.
Bug: 494
Change-Id: I9344690c3cfe7d19d6ca12fb66484ced57dbe869
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/52725
Reviewed-by: Bob Beck <bbe@google.com>
Commit-Queue: Bob Beck <bbe@google.com>
David Benjamin
cf506f17d0