| commit | eca7754148613dfbf542bbfac5392b5f0d85ea6a | [log] [tgz] |
|---|---|---|
| author | Filippo Valsorda <filippo@golang.org> | Mon Aug 01 13:11:55 2022 +0200 |
| committer | Gopher Robot <gobot@golang.org> | Thu Nov 10 18:45:00 2022 +0000 |
| tree | df4d1005b437cb459c67999f54d0c3476c48540d | |
| parent | 3fc8ed2543091693eca514b363fcdbbe5c7f2916 [diff] |
crypto/internal/edwards25519: replace scalar field with fiat-crypto
This was the last piece of ref10 code, including the infamous "Christmas
tree" in scMulAdd, that approximately all Ed25519 implementations
inherited. Replace the whole scalar field implementation with a
fiat-crypto generated one, like those in crypto/internal/nistec/fiat.
The only complexity is the wide reduction (both for the 64-byte one and
for the clamped input). For that we do a limbed reduction suggested by
Frank Denis.
Some minor housekeeping and test changes from filippo.io/edwards25519
are included, as part of syncing with downstream.
Ignoring the autogenerated file, the diff is
268 insertions(+), 893 deletions(-)
George Tankersley signed the Individual CLA and authorized me to submit
this change on his behalf at the time he contributed it to
filippo.io/edwards25519.
Co-authored-by: George Tankersley <george.tankersley@gmail.com>
Change-Id: I4084b4d3813f36e16b3d8839df75da1b4fd7846b
Reviewed-on: https://go-review.googlesource.com/c/go/+/420454
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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