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
|
package signed
import (
"fmt"
"github.com/Sirupsen/logrus"
"github.com/endophage/gotuf/data"
"github.com/endophage/gotuf/errors"
"strings"
)
// Sign takes a data.Signed and a key, calculated and adds the signature
// to the data.Signed
func Sign(service CryptoService, s *data.Signed, keys ...data.PublicKey) error {
logrus.Debugf("sign called with %d keys", len(keys))
signatures := make([]data.Signature, 0, len(s.Signatures)+1)
keyIDMemb := make(map[string]struct{})
keyIDs := make([]string, 0, len(keys))
for _, key := range keys {
keyIDMemb[key.ID()] = struct{}{}
keyIDs = append(keyIDs, key.ID())
}
logrus.Debugf("Generated list of signing IDs: %s", strings.Join(keyIDs, ", "))
for _, sig := range s.Signatures {
if _, ok := keyIDMemb[sig.KeyID]; ok {
continue
}
signatures = append(signatures, sig)
}
newSigs, err := service.Sign(keyIDs, s.Signed)
if err != nil {
return err
}
if len(newSigs) < 1 {
return errors.ErrInsufficientSignatures{
Name: fmt.Sprint("Cryptoservice failed to produce any signatures for keys with IDs: %s", strings.Join(keyIDs, ", ")),
Err: nil,
}
}
logrus.Debugf("appending %d new signatures", len(newSigs))
s.Signatures = append(signatures, newSigs...)
return nil
}
|
