-
Notifications
You must be signed in to change notification settings - Fork 0
/
hash.go
50 lines (43 loc) · 1.39 KB
/
hash.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
// Copyright (C) 2023 Shanhu Tech Inc.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Affero General Public License as published by the
// Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
// for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package rsautil
import (
"bytes"
"crypto/rsa"
"crypto/sha256"
"encoding/base64"
"golang.org/x/crypto/ssh"
)
func keyHashStr(h []byte) string {
return base64.RawURLEncoding.EncodeToString(h)
}
// PublicKeyHash returns the public key hash of a key.
func PublicKeyHash(k *rsa.PublicKey) ([]byte, error) {
sshPub, err := ssh.NewPublicKey(k)
if err != nil {
return nil, err
}
wire := bytes.TrimSpace(ssh.MarshalAuthorizedKey(sshPub))
h := sha256.Sum256(wire)
return h[:], nil
}
// PublicKeyHashString returns the public key hash string of a key.
func PublicKeyHashString(k *rsa.PublicKey) (string, error) {
h, err := PublicKeyHash(k)
if err != nil {
return "", err
}
return keyHashStr(h), nil
}