-
Notifications
You must be signed in to change notification settings - Fork 0
/
helper.go
87 lines (75 loc) · 2.19 KB
/
helper.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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
/*
* Copyright © 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @author Aeneas Rekkas <aeneas+oss@aeneas.io>
* @copyright 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
* @license Apache-2.0
*/
package jwk
import (
"crypto/ecdsa"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"fmt"
"github.com/pborman/uuid"
"github.com/pkg/errors"
"github.com/square/go-jose"
)
func First(keys []jose.JSONWebKey) *jose.JSONWebKey {
if len(keys) == 0 {
return nil
}
return &keys[0]
}
func FindKeyByPrefix(set *jose.JSONWebKeySet, prefix string) (key *jose.JSONWebKey, err error) {
keys, err := FindKeysByPrefix(set, prefix)
if err != nil {
return nil, err
}
return First(keys.Keys), nil
}
func FindKeysByPrefix(set *jose.JSONWebKeySet, prefix string) (*jose.JSONWebKeySet, error) {
keys := new(jose.JSONWebKeySet)
for _, k := range set.Keys {
if len(k.KeyID) >= len(prefix)+1 && k.KeyID[:len(prefix)+1] == prefix+":" {
keys.Keys = append(keys.Keys, k)
}
}
if len(keys.Keys) == 0 {
return nil, errors.Errorf("Unable to find key with prefix %s in JSON Web Key Set", prefix)
}
return keys, nil
}
func PEMBlockForKey(key interface{}) (*pem.Block, error) {
switch k := key.(type) {
case *rsa.PrivateKey:
return &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(k)}, nil
case *ecdsa.PrivateKey:
b, err := x509.MarshalECPrivateKey(k)
if err != nil {
return nil, errors.WithStack(err)
}
return &pem.Block{Type: "EC PRIVATE KEY", Bytes: b}, nil
default:
return nil, errors.New("Invalid key type")
}
}
func ider(typ, id string) string {
if id == "" {
id = uuid.New()
}
return fmt.Sprintf("%s:%s", typ, id)
}