RFC 4880 uses the term "creation time" to refer to when keys and signatures are created, and this is partially followed already. This CL applies it to the rest of places that were using "currentTime" instead. Change-Id: I8a83604b53a240689327defd89e22ddbebe3b679 Reviewed-on: https://go-review.googlesource.com/c/crypto/+/175446 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>