forked from keybase/client
-
Notifications
You must be signed in to change notification settings - Fork 0
/
kbcmf_decrypt.go
75 lines (61 loc) · 1.64 KB
/
kbcmf_decrypt.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
// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
package engine
import (
"io"
"github.com/keybase/client/go/libkb"
)
type KBCMFDecryptArg struct {
Source io.Reader
Sink io.WriteCloser
}
// KBCMFDecrypt decrypts data read from a source into a sink.
type KBCMFDecrypt struct {
arg *KBCMFDecryptArg
libkb.Contextified
}
// NewKBCMFDecrypt creates a KBCMFDecrypt engine.
func NewKBCMFDecrypt(arg *KBCMFDecryptArg, g *libkb.GlobalContext) *KBCMFDecrypt {
return &KBCMFDecrypt{
arg: arg,
Contextified: libkb.NewContextified(g),
}
}
// Name is the unique engine name.
func (e *KBCMFDecrypt) Name() string {
return "KBCMFDecrypt"
}
// GetPrereqs returns the engine prereqs.
func (e *KBCMFDecrypt) Prereqs() Prereqs {
return Prereqs{}
}
// RequiredUIs returns the required UIs.
func (e *KBCMFDecrypt) RequiredUIs() []libkb.UIKind {
return nil
}
// SubConsumers returns the other UI consumers for this engine.
func (e *KBCMFDecrypt) SubConsumers() []libkb.UIConsumer {
return []libkb.UIConsumer{}
}
// Run starts the engine.
func (e *KBCMFDecrypt) Run(ctx *Context) (err error) {
me, err := libkb.LoadMe(libkb.NewLoadUserArg(e.G()))
if err != nil {
return err
}
ska := libkb.SecretKeyArg{
Me: me,
KeyType: libkb.DeviceEncryptionKeyType,
}
key, err := e.G().Keyrings.GetSecretKeyWithPrompt(
ctx.LoginContext, ska, ctx.SecretUI,
"decrypting a message/file")
if err != nil {
return err
}
kp, ok := key.(libkb.NaclDHKeyPair)
if !ok || kp.Private == nil {
return libkb.KeyCannotDecryptError{}
}
return libkb.KBCMFDecrypt(e.arg.Source, e.arg.Sink, kp)
}