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Filippo Valsorda c5c4f3dd5f crypto/x509: keep RSA CRT values in ParsePKCS1PrivateKey 
Turns out that recomputing them (and qInv in particular) in constant
time is expensive, so let's not throw them away when they are available.
They are much faster to check, so we now do that on precompute.

Also, thanks to the opaque crypto/internal/fips140/rsa.PrivateKey type,
we now have some assurance that the values we use are always ones we
checked.

Recovers most of the performance loss since CL 630516 in the happy path.
Also, since now we always use the CRT, if necessary by running a
throwaway Precompute, which is now cheap if PrecomputedValues is filled
out, we effectively fixed the JSON round-trip slowdown (#59695).

goos: darwin
goarch: arm64
pkg: crypto/rsa
cpu: Apple M2
                            │ 3b42687c56  │          f017604bc6-dirty           │
                            │   sec/op    │   sec/op     vs base                │
ParsePKCS8PrivateKey/2048-8   26.76µ ± 1%   65.99µ ± 1%  +146.64% (p=0.002 n=6)

Fixes #59695
Updates #69799
For #69536

Change-Id: I507f8c5a32e69ab28990a3bf78959836b9b08cc9
Reviewed-on: https://go-review.googlesource.com/c/go/+/632478
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
2024-11-30 01:49:35 +00:00
.github .github: update language change proposal template 2024-08-08 19:02:29 +00:00
api crypto/cipher: deprecate NewOFB, NewCFBDecrypter, and NewCFBEncrypter 2024-11-22 04:18:54 +00:00
doc crypto/x509: keep RSA CRT values in ParsePKCS1PrivateKey 2024-11-30 01:49:35 +00:00
lib all: rename crypto/internal/fips to crypto/internal/fips140 2024-11-20 20:28:34 +00:00
misc misc/wasm: move wasm runtime files to lib/wasm 2024-08-30 19:15:21 +00:00
src crypto/x509: keep RSA CRT values in ParsePKCS1PrivateKey 2024-11-30 01:49:35 +00:00
test cmd/compile: use very high budget for once-called closures 2024-11-22 02:04:41 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore runtime,internal: move runtime/internal/sys to internal/runtime/sys 2024-07-23 19:05:35 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00
LICENSE LICENSE: update per Google Legal 2024-08-09 14:54:31 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md README: fix CC BY license name 2024-07-22 17:45:27 +00:00
SECURITY.md SECURITY.md: update the Reporting a Vulnerability link 2023-09-22 21:17:24 +00:00

README.md

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