/
crypt.go
44 lines (40 loc) · 1.18 KB
/
crypt.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
package core
import (
"aead.dev/minisign"
"bytes"
"crypto/sha1"
"fmt"
"golang.org/x/term"
"io"
"os"
"strings"
)
// CalculateBlockHash calculates the sha1 checksum of a byte slice.
func CalculateBlockHash(block []byte) (string, error) {
hash := sha1.New()
if _, err := io.Copy(hash, bytes.NewReader(block)); err != nil {
return "", err
}
hashInBytes := hash.Sum(nil)[:20]
return strings.TrimSpace(fmt.Sprintf("%x", hashInBytes)), nil
}
// SignDatabase generates a minisign signature of the database using given keys.
// The minisign signature uses "fsverify" as the comments to ensure predictability when fsverify verifies the signature.
func SignDatabase(database string, minisignKeys string) ([]byte, error) {
fmt.Print("Enter your password (will not echo): ")
p, err := term.ReadPassword(int(os.Stdin.Fd()))
if err != nil {
panic(err)
}
fmt.Println("\nSigning database")
privateKey, err := minisign.PrivateKeyFromFile(string(p), minisignKeys+"/minisign.key")
if err != nil {
return nil, err
}
data, err := os.ReadFile(database)
if err != nil {
return nil, err
}
signature := minisign.SignWithComments(privateKey, data, "fsverify", "fsverify")
return signature, err
}