-
Notifications
You must be signed in to change notification settings - Fork 0
/
utils.go
127 lines (111 loc) · 2.62 KB
/
utils.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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
package nknwallet
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"log"
"os"
"filippo.io/age"
"filippo.io/age/armor"
"github.com/nknorg/nkn-sdk-go"
"github.com/nknorg/nkn/v2/crypto"
"github.com/nknorg/nkn/v2/util/password"
"github.com/nknorg/nkn/v2/vault"
)
func checkerr(err error) {
if err != nil {
log.Fatal(err)
}
}
type PasswordScryptIdentity struct {
password string
}
var _ age.Identity = &PasswordScryptIdentity{}
// Unwrap unwraps given password and delegates it to NewScriptIdentity()
func (i *PasswordScryptIdentity) Unwrap(stanzas []*age.Stanza) (fileKey []byte, err error) {
for _, s := range stanzas {
if s.Type == "scrypt" && len(stanzas) != 1 {
return nil, errors.New("an scrypt recipient must be the only one")
}
}
if len(stanzas) != 1 || stanzas[0].Type != "scrypt" {
return nil, age.ErrIncorrectIdentity
}
ii, err := age.NewScryptIdentity(i.password)
if err != nil {
return nil, err
}
fileKey, err = ii.Unwrap(stanzas)
if errors.Is(err, age.ErrIncorrectIdentity) {
return nil, errors.New("incorrect passphrase")
}
return fileKey, err
}
func encrypt(recipients []age.Recipient, in io.Reader, out io.Writer) error {
a := armor.NewWriter(out)
defer a.Close()
out = a
w, err := age.Encrypt(out, recipients...)
if err != nil {
return err
}
if _, err := io.Copy(w, in); err != nil {
return err
}
if err := w.Close(); err != nil {
return err
}
return nil
}
func encryptAccount(account *nkn.Account, password []byte) ([]byte, error) {
r, err := age.NewScryptRecipient(string(password))
if err != nil {
return nil, err
}
in := new(bytes.Buffer)
err = json.NewEncoder(in).Encode(account)
if err != nil {
return nil, err
}
out := &bytes.Buffer{}
encrypt([]age.Recipient{r}, in, out)
return out.Bytes(), nil
}
func decryptAccount(walletfile *Wallet, password []byte) (*nkn.Account, error) {
identities := []age.Identity{
&PasswordScryptIdentity{string(password)},
}
in := bytes.NewBuffer([]byte(walletfile.Armor))
r, err := age.Decrypt(armor.NewReader(in), identities...)
if err != nil {
return nil, err
}
out := &bytes.Buffer{}
account := &vault.Account{}
if _, err := io.Copy(out, r); err != nil {
return nil, err
}
err = json.NewDecoder(out).Decode(account)
if err != nil {
return nil, err
}
seed := crypto.GetSeedFromPrivateKey(account.PrivateKey)
_ = seed
return nkn.NewAccount(seed)
}
func getConfirmedPassword(passwd string) []byte {
var tmp []byte
var err error
if passwd != "" {
tmp = []byte(passwd)
} else {
tmp, err = password.GetConfirmedPassword()
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
return tmp
}