b2dbfbfc23
Most libraries don't consider N secret, but it's arguably useful for
privacy applications. However, E should generally be fixed, and there is
a lot of performance to be gained by using variable-time exponentiation.
The threshold trick is from BoringSSL.
goos: linux
goarch: amd64
pkg: crypto/rsa
cpu: Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz
│ old │ new │
│ sec/op │ sec/op vs base │
DecryptPKCS1v15/2048-4 1.398m ± 0% 1.396m ± 4% ~ (p=0.853 n=10)
DecryptPKCS1v15/3072-4 3.640m ± 0% 3.652m ± 1% ~ (p=0.063 n=10)
DecryptPKCS1v15/4096-4 7.756m ± 0% 7.764m ± 0% ~ (p=0.853 n=10)
EncryptPKCS1v15/2048-4 175.50µ ± 0% 39.37µ ± 0% -77.57% (p=0.000 n=10)
DecryptOAEP/2048-4 1.375m ± 0% 1.371m ± 1% ~ (p=0.089 n=10)
EncryptOAEP/2048-4 177.64µ ± 0% 41.17µ ± 1% -76.82% (p=0.000 n=10)
SignPKCS1v15/2048-4 1.419m ± 0% 1.393m ± 1% -1.84% (p=0.000 n=10)
VerifyPKCS1v15/2048-4 173.70µ ± 1% 38.28µ ± 2% -77.96% (p=0.000 n=10)
SignPSS/2048-4 1.437m ± 1% 1.413m ± 0% -1.64% (p=0.000 n=10)
VerifyPSS/2048-4 176.83µ ± 1% 43.08µ ± 5% -75.64% (p=0.000 n=10)
This finally makes everything in crypto/rsa faster than it was in Go 1.19.
goos: linux
goarch: amd64
pkg: crypto/rsa
cpu: Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz
│ go1.19.txt │ go1.20.txt │ go1.21.txt │ new.txt │
│ sec/op │ sec/op vs base │ sec/op vs base │ sec/op vs base │
DecryptPKCS1v15/2048-4 1.458m ± 0% 1.597m ± 1% +9.50% (p=0.000 n=10) 1.395m ± 1% -4.30% (p=0.000 n=10) 1.396m ± 4% -4.25% (p=0.002 n=10)
DecryptPKCS1v15/3072-4 4.023m ± 1% 5.332m ± 1% +32.53% (p=0.000 n=10) 3.649m ± 1% -9.30% (p=0.000 n=10) 3.652m ± 1% -9.23% (p=0.000 n=10)
DecryptPKCS1v15/4096-4 8.710m ± 1% 11.937m ± 1% +37.05% (p=0.000 n=10) 7.564m ± 1% -13.16% (p=0.000 n=10) 7.764m ± 0% -10.86% (p=0.000 n=10)
EncryptPKCS1v15/2048-4 51.79µ ± 0% 267.68µ ± 0% +416.90% (p=0.000 n=10) 176.42µ ± 0% +240.67% (p=0.000 n=10) 39.37µ ± 0% -23.98% (p=0.000 n=10)
DecryptOAEP/2048-4 1.461m ± 0% 1.613m ± 1% +10.37% (p=0.000 n=10) 1.415m ± 0% -3.13% (p=0.000 n=10) 1.371m ± 1% -6.18% (p=0.000 n=10)
EncryptOAEP/2048-4 54.24µ ± 0% 269.19µ ± 0% +396.28% (p=0.000 n=10) 177.31µ ± 0% +226.89% (p=0.000 n=10) 41.17µ ± 1% -24.10% (p=0.000 n=10)
SignPKCS1v15/2048-4 1.510m ± 0% 1.705m ± 0% +12.93% (p=0.000 n=10) 1.423m ± 1% -5.78% (p=0.000 n=10) 1.393m ± 1% -7.76% (p=0.000 n=10)
VerifyPKCS1v15/2048-4 50.87µ ± 0% 266.41µ ± 1% +423.71% (p=0.000 n=10) 174.38µ ± 0% +242.79% (p=0.000 n=10) 38.28µ ± 2% -24.75% (p=0.000 n=10)
SignPSS/2048-4 1.513m ± 1% 1.709m ± 0% +12.97% (p=0.000 n=10) 1.461m ± 0% -3.42% (p=0.000 n=10) 1.413m ± 0% -6.58% (p=0.000 n=10)
VerifyPSS/2048-4 53.45µ ± 1% 268.56µ ± 0% +402.48% (p=0.000 n=10) 177.29µ ± 0% +231.72% (p=0.000 n=10) 43.08µ ± 5% -19.39% (p=0.000 n=10)
geomean 514.6µ 1.094m +112.65% 801.6µ +55.77% 442.1µ -14.08%
Fixes #63516
Change-Id: If40e596a2e4b3ab7a202ff34591cf9cffecfcc1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/552935
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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| .github | ||
| api | ||
| doc | ||
| lib/time | ||
| misc | ||
| src | ||
| test | ||
| .gitattributes | ||
| .gitignore | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| PATENTS | ||
| README.md | ||
| SECURITY.md | ||
| codereview.cfg | ||
| go.env | ||
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