This repository has been archived by the owner on Jul 7, 2020. It is now read-only.
forked from keybase/client
/
paperkey.go
165 lines (139 loc) · 3.88 KB
/
paperkey.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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
// PaperKey creates paper backup keys for a user and pushes them to the server.
// It checks for existing paper devices and offers to revoke the
// keys.
//
package engine
import (
"fmt"
"golang.org/x/net/context"
"github.com/keybase/client/go/libkb"
keybase1 "github.com/keybase/client/go/protocol/keybase1"
)
// PaperKey is an engine.
type PaperKey struct {
passphrase libkb.PaperKeyPhrase
gen *PaperKeyGen
libkb.Contextified
}
// NewPaperKey creates a PaperKey engine.
func NewPaperKey(g *libkb.GlobalContext) *PaperKey {
return &PaperKey{
Contextified: libkb.NewContextified(g),
}
}
// Name is the unique engine name.
func (e *PaperKey) Name() string {
return "PaperKey"
}
// GetPrereqs returns the engine prereqs.
func (e *PaperKey) Prereqs() Prereqs {
return Prereqs{
Device: true,
}
}
// RequiredUIs returns the required UIs.
func (e *PaperKey) RequiredUIs() []libkb.UIKind {
return []libkb.UIKind{
libkb.LoginUIKind,
}
}
// SubConsumers returns the other UI consumers for this engine.
func (e *PaperKey) SubConsumers() []libkb.UIConsumer {
return []libkb.UIConsumer{
&RevokeEngine{},
&PaperKeyGen{},
}
}
// Run starts the engine.
func (e *PaperKey) Run(m libkb.MetaContext) error {
m.G().LocalSigchainGuard().Set(m.Ctx(), "PaperKey")
defer m.G().LocalSigchainGuard().Clear(m.Ctx(), "PaperKey")
me, err := libkb.LoadMe(libkb.NewLoadUserArgWithMetaContext(m))
if err != nil {
return err
}
// check for existing paper keys
cki := me.GetComputedKeyInfos()
if cki == nil {
return fmt.Errorf("no computed key infos")
}
var needReload bool
var devicesToRevoke []*libkb.Device
for i, bdev := range cki.PaperDevices() {
revoke, err := m.UIs().LoginUI.PromptRevokePaperKeys(context.TODO(),
keybase1.PromptRevokePaperKeysArg{
Device: *bdev.ProtExport(),
Index: i,
})
if err != nil {
m.CWarningf("prompt error: %s", err)
return err
}
if revoke {
devicesToRevoke = append(devicesToRevoke, bdev)
}
}
// Revoke all keys at once, not one-by-one. This way, a cancelation of the
// experience above will stop all operations
for _, bdev := range devicesToRevoke {
reng := NewRevokeDeviceEngine(m.G(), RevokeDeviceEngineArgs{ID: bdev.ID})
if err := RunEngine2(m, reng); err != nil {
// probably not a good idea to continue...
return err
}
needReload = true
}
if needReload {
me, err = libkb.LoadMe(libkb.NewLoadUserArgWithMetaContext(m))
if err != nil {
return err
}
}
ska1 := libkb.SecretKeyArg{
Me: me,
KeyType: libkb.DeviceSigningKeyType,
}
signingKey, err := m.G().Keyrings.GetSecretKeyWithPrompt(m, m.SecretKeyPromptArg(ska1, "You must sign your new paper key"))
if err != nil {
return err
}
ska2 := libkb.SecretKeyArg{
Me: me,
KeyType: libkb.DeviceEncryptionKeyType,
}
encryptionKeyGeneric, err := m.G().Keyrings.GetSecretKeyWithPrompt(m, m.SecretKeyPromptArg(ska2, "You must encrypt for your new paper key"))
if err != nil {
return err
}
encryptionKey, ok := encryptionKeyGeneric.(libkb.NaclDHKeyPair)
if !ok {
return fmt.Errorf("Unexpected encryption key type")
}
e.passphrase, err = libkb.MakePaperKeyPhrase(libkb.PaperKeyVersion)
if err != nil {
return err
}
kgarg := &PaperKeyGenArg{
Passphrase: e.passphrase,
Me: me,
SigningKey: signingKey,
EncryptionKey: encryptionKey,
PerUserKeyring: nil,
}
e.gen = NewPaperKeyGen(m.G(), kgarg)
if err := RunEngine2(m, e.gen); err != nil {
return err
}
return m.UIs().LoginUI.DisplayPaperKeyPhrase(m.Ctx(), keybase1.DisplayPaperKeyPhraseArg{Phrase: e.passphrase.String()})
}
func (e *PaperKey) Passphrase() string {
return e.passphrase.String()
}
func (e *PaperKey) SigKey() libkb.GenericKey {
return e.gen.SigKey()
}
func (e *PaperKey) EncKey() libkb.GenericKey {
return e.gen.EncKey()
}