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Filippo Valsorda a5cd894318 crypto/ecdh,crypto/internal/nistec: enable pruning of unused curves
If a program only uses ecdh.P256(), the implementation of the other
curves shouldn't end up in the binary. This mostly required moving some
operations from init() time. Small performance hit in uncompressed
Bytes/SetBytes, but not big enough to show up in higher-level
benchmarks. If it becomes a problem, we can fix it by pregenerating the
p-1 bytes representation in generate.go.

For #52182
Updates #52221

Change-Id: I64460973b59ee3df787d7e967a6c2bcbc114ba65
Reviewed-on: https://go-review.googlesource.com/c/go/+/402555
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Fernando Lobato Meeser <felobato@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
2022-08-12 00:04:29 +00:00
.github .github: remove duplicate security link 2022-01-07 17:55:09 +00:00
api crypto/ecdh: new package 2022-08-12 00:03:39 +00:00
doc doc: move Go 1.19 release notes to x/website 2022-08-01 18:07:12 +00:00
lib/time lib/time, time/tzdata: update to 2022b 2022-08-11 20:03:19 +00:00
misc misc/cgo/testsanitizers: fix code to detect gcc version correctly 2022-08-11 17:23:33 +00:00
src crypto/ecdh,crypto/internal/nistec: enable pruning of unused curves 2022-08-12 00:04:29 +00:00
test test: make issue54343.go robust against the tiny allocator 2022-08-11 20:13:07 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
README.md README.md: update wiki link 2022-04-26 16:21:18 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00

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