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They're internal for now; I'm thinking we'll just have the public versions of these at the EVP layer for now and try to move past this mess where there's two versions of every API. The API is mildly annoying in that both this caller and the one added next will want to distinguish UNKNOWN_GROUP from other errors, but the recent helper function makes checking the error queue not tooooo bad. Bug: 42290364 Change-Id: Ibb5e3e643a9180459cc09b4559ee40696cea2688 Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/81650 Reviewed-by: Adam Langley <agl@google.com> Commit-Queue: David Benjamin <davidben@google.com>