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mirror of https://github.com/go-gitea/gitea synced 2024-12-25 01:54:26 +00:00
gitea/modules/util/keypair.go
KN4CK3R f79c9e817a
Use crypto/sha256 (#29386)
Go 1.21 improved the performance of `crypto/sha256`. It's now similar to
`minio/sha256-simd`, so we should just use the standard libs.

https://go.dev/doc/go1.21#crypto/sha256
https://go-review.googlesource.com/c/go/+/408795
https://github.com/multiformats/go-multihash/pull/173
2024-02-25 13:32:13 +00:00

61 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
}