mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-09 06:13:19 +01:00
15e81637ab
- In Go 1.21 the crypto/sha256 [got a massive
improvement](https://go.dev/doc/go1.21#crypto/sha256) by utilizing the
SHA instructions for AMD64 CPUs, which sha256-simd already was doing.
The performance is now on par and I think it's preferable to use the
standard library rather than a package when possible.
```
cpu: AMD Ryzen 5 3600X 6-Core Processor
│ simd.txt │ go.txt │
│ sec/op │ sec/op vs base │
Hash/8Bytes-12 63.25n ± 1% 73.38n ± 1% +16.02% (p=0.002 n=6)
Hash/64Bytes-12 98.73n ± 1% 105.30n ± 1% +6.65% (p=0.002 n=6)
Hash/1K-12 567.2n ± 1% 572.8n ± 1% +0.99% (p=0.002 n=6)
Hash/8K-12 4.062µ ± 1% 4.062µ ± 1% ~ (p=0.396 n=6)
Hash/1M-12 512.1µ ± 0% 510.6µ ± 1% ~ (p=0.485 n=6)
Hash/5M-12 2.556m ± 1% 2.564m ± 0% ~ (p=0.093 n=6)
Hash/10M-12 5.112m ± 0% 5.127m ± 0% ~ (p=0.093 n=6)
geomean 13.82µ 14.27µ +3.28%
│ simd.txt │ go.txt │
│ B/s │ B/s vs base │
Hash/8Bytes-12 120.6Mi ± 1% 104.0Mi ± 1% -13.81% (p=0.002 n=6)
Hash/64Bytes-12 618.2Mi ± 1% 579.8Mi ± 1% -6.22% (p=0.002 n=6)
Hash/1K-12 1.682Gi ± 1% 1.665Gi ± 1% -0.98% (p=0.002 n=6)
Hash/8K-12 1.878Gi ± 1% 1.878Gi ± 1% ~ (p=0.310 n=6)
Hash/1M-12 1.907Gi ± 0% 1.913Gi ± 1% ~ (p=0.485 n=6)
Hash/5M-12 1.911Gi ± 1% 1.904Gi ± 0% ~ (p=0.093 n=6)
Hash/10M-12 1.910Gi ± 0% 1.905Gi ± 0% ~ (p=0.093 n=6)
geomean 1.066Gi 1.032Gi -3.18%
```
(cherry picked from commit abd94ff5b5
)
60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package util
|
|
|
|
import (
|
|
"crypto"
|
|
"crypto/rand"
|
|
"crypto/rsa"
|
|
"crypto/sha256"
|
|
"crypto/x509"
|
|
"encoding/pem"
|
|
)
|
|
|
|
// GenerateKeyPair generates a public and private keypair
|
|
func GenerateKeyPair(bits int) (string, string, error) {
|
|
priv, _ := rsa.GenerateKey(rand.Reader, bits)
|
|
privPem, err := pemBlockForPriv(priv)
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
pubPem, err := pemBlockForPub(&priv.PublicKey)
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
return privPem, pubPem, nil
|
|
}
|
|
|
|
func pemBlockForPriv(priv *rsa.PrivateKey) (string, error) {
|
|
privBytes := pem.EncodeToMemory(&pem.Block{
|
|
Type: "RSA PRIVATE KEY",
|
|
Bytes: x509.MarshalPKCS1PrivateKey(priv),
|
|
})
|
|
return string(privBytes), nil
|
|
}
|
|
|
|
func pemBlockForPub(pub *rsa.PublicKey) (string, error) {
|
|
pubASN1, err := x509.MarshalPKIXPublicKey(pub)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
pubBytes := pem.EncodeToMemory(&pem.Block{
|
|
Type: "PUBLIC KEY",
|
|
Bytes: pubASN1,
|
|
})
|
|
return string(pubBytes), nil
|
|
}
|
|
|
|
// CreatePublicKeyFingerprint creates a fingerprint of the given key.
|
|
// The fingerprint is the sha256 sum of the PKIX structure of the key.
|
|
func CreatePublicKeyFingerprint(key crypto.PublicKey) ([]byte, error) {
|
|
bytes, err := x509.MarshalPKIXPublicKey(key)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
checksum := sha256.Sum256(bytes)
|
|
|
|
return checksum[:], nil
|
|
}
|