From CL 173457 and CL 235358.

Change-Id: Ia46ab9c7e2c57472df3126ddc7050f0068fcaab9
GitHub-Last-Rev: c38e379
GitHub-Pull-Request: #146
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/241282
Auto-Submit: Han-Wen Nienhuys <hanwen@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Han-Wen Nienhuys <hanwen@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Han-Wen Nienhuys <hanwen@google.com>

For golang/go#52221

Change-Id: I27e867d4cc89cd52c8d510f0dbab4e89b7cd4763
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/451115
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>

Change-Id: Ia0410f1f3bb0a9ee68c6dbe1e6f62f65f9e00955
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/477755
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Run-TryBot: shuang cui <imcusg@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: I568d040817345a10881c31b8efc296f543e59113
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/482855
Reviewed-by: Heschi Kreinick <heschi@google.com>
Auto-Submit: Gopher Robot <gobot@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>