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
|
package acme
import (
"crypto"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/base64"
"encoding/pem"
"io"
"io/ioutil"
"github.com/square/go-jose"
)
func LoadKey(r io.Reader) (*rsa.PrivateKey, error) {
der, err := ioutil.ReadAll(r)
if err != nil {
return nil, err
}
block, _ := pem.Decode(der)
return x509.ParsePKCS1PrivateKey(block.Bytes)
}
func NewKey(w io.Writer, size int) (*rsa.PrivateKey, error) {
key, err := rsa.GenerateKey(rand.Reader, size)
if err != nil {
return nil, err
}
block := &pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(key),
}
return key, pem.Encode(w, block)
}
func NewCSR(altnames []string, key *rsa.PrivateKey) (string, error) {
tmpl := x509.CertificateRequest{
Subject: pkix.Name{
CommonName: altnames[0],
},
}
if len(altnames) > 1 {
tmpl.DNSNames = altnames
}
der, err := x509.CreateCertificateRequest(rand.Reader, &tmpl, key)
if err != nil {
return "", err
}
return base64.RawURLEncoding.EncodeToString(der), nil
}
func Thumb(token string, key crypto.PublicKey) (string, error) {
k := &jose.JsonWebKey{Key: key, Algorithm: "RSA"}
thumb, err := k.Thumbprint(crypto.SHA256)
if err != nil {
return "", err
}
return token + "." + base64.RawURLEncoding.EncodeToString(thumb), nil
}
|