Golang User.GetComputedKeyFamily方法代码示例

// findPaperKeys checks if the user has paper backup keys.  If he/she
// does, it prompts for a paperkey phrase.  This is used to
// regenerate paper keys, which are then matched against the
// paper keys found in the keyfamily.
func findPaperKeys(ctx *Context, g *libkb.GlobalContext, me *libkb.User) (*keypair, error) {
	cki := me.GetComputedKeyInfos()
	if cki == nil {
		return nil, fmt.Errorf("no computed key infos")
	}
	bdevs := cki.PaperDevices()
	if len(bdevs) == 0 {
		return nil, libkb.NoPaperKeysError{}
	}

	passphrase, err := ctx.SecretUI.GetPaperKeyPassphrase(keybase1.GetPaperKeyPassphraseArg{Username: me.GetName()})
	if err != nil {
		return nil, err
	}
	paperPhrase := libkb.NewPaperKeyPhrase(passphrase)
	if paperPhrase.Version() != libkb.PaperKeyVersion {
		g.Log.Debug("paper version mismatch:  generated paper key version = %d, libkb version = %d", paperPhrase.Version(), libkb.PaperKeyVersion)
		return nil, libkb.KeyVersionError{}
	}

	bkarg := &PaperKeyGenArg{
		Passphrase: libkb.NewPaperKeyPhrase(passphrase),
		SkipPush:   true,
		Me:         me,
	}
	bkeng := NewPaperKeyGen(bkarg, g)
	if err := RunEngine(bkeng, ctx); err != nil {
		return nil, err
	}

	sigKey := bkeng.SigKey()
	encKey := bkeng.EncKey()

	var match bool
	ckf := me.GetComputedKeyFamily()
	for _, bdev := range bdevs {
		sk, err := ckf.GetSibkeyForDevice(bdev.ID)
		if err != nil {
			continue
		}
		ek, err := ckf.GetEncryptionSubkeyForDevice(bdev.ID)
		if err != nil {
			continue
		}

		if sk.GetKID().Equal(sigKey.GetKID()) && ek.GetKID().Equal(encKey.GetKID()) {
			match = true
			break
		}
	}

	if !match {
		return nil, libkb.PassphraseError{Msg: "no matching paper backup keys found"}
	}

	return &keypair{sigKey: sigKey, encKey: encKey}, nil

}

// check all the user's paper keys for arg.Bundles match
func matchingPaperKey(g *libkb.GlobalContext, secretUI libkb.SecretUI, arg keybase1.UnboxBytes32AnyArg, me *libkb.User) (key libkb.GenericKey, index int, err error) {
	cki := me.GetComputedKeyInfos()
	if cki == nil {
		return nil, 0, nil
	}
	var matchingPaper []*libkb.Device
	for _, pdev := range cki.PaperDevices() {
		enckey, err := me.GetComputedKeyFamily().GetEncryptionSubkeyForDevice(pdev.ID)
		if err != nil {
			return nil, 0, err
		}
		if _, ok := kidMatch(enckey, arg.Bundles); ok {
			g.Log.Debug("matching paper key: %s", *pdev.Description)
			matchingPaper = append(matchingPaper, pdev)
		}
	}
	if len(matchingPaper) == 0 {
		g.Log.Debug("no matching paper keys found")
		return nil, 0, nil
	}

	phrase, err := libkb.GetPaperKeyForCryptoPassphrase(secretUI, arg.Reason, matchingPaper)
	if err != nil {
		return nil, 0, err
	}
	paperPhrase, err := libkb.NewPaperKeyPhraseCheckVersion(g, phrase)
	if err != nil {
		return nil, 0, err
	}

	bkarg := &PaperKeyGenArg{
		Passphrase: paperPhrase,
		SkipPush:   true,
	}
	bkeng := NewPaperKeyGen(bkarg, g)
	if err := RunEngine(bkeng, &Context{}); err != nil {
		return nil, 0, err
	}

	// find the index for the key they entered (and make sure the key they entered matches)
	if n, ok := kidMatch(bkeng.EncKey(), arg.Bundles); ok {

		// this key matches, so cache this paper key
		if err := g.LoginState().Account(func(a *libkb.Account) {
			a.SetUnlockedPaperKey(bkeng.SigKey(), bkeng.EncKey())
		}, "UnboxBytes32Any - cache paper key"); err != nil {
			return nil, 0, err
		}

		return bkeng.EncKey(), n, nil
	}

	return nil, 0, nil
}

func (e *SaltpackDecrypt) makeMessageInfo(me *libkb.User, mki *saltpack.MessageKeyInfo) {
	if mki == nil {
		return
	}
	ckf := me.GetComputedKeyFamily()
	for _, nr := range mki.NamedReceivers {
		kid := keybase1.KIDFromRawKey(nr, libkb.KIDNaclDH)
		if dev, _ := ckf.GetDeviceForKID(kid); dev != nil {
			edev := dev.ProtExport()
			edev.EncryptKey = kid
			e.res.Devices = append(e.res.Devices, *edev)
		}
	}
	e.res.NumAnonReceivers = mki.NumAnonReceivers
	e.res.ReceiverIsAnon = mki.ReceiverIsAnon
}

func (e *RevokeEngine) getKIDsToRevoke(me *libkb.User) ([]keybase1.KID, error) {
	if e.mode == RevokeDevice {
		deviceKeys, err := me.GetComputedKeyFamily().GetAllActiveKeysForDevice(e.deviceID)
		if err != nil {
			return nil, err
		}
		if len(deviceKeys) == 0 {
			return nil, fmt.Errorf("No active keys to revoke for device %s.", e.deviceID)
		}
		return deviceKeys, nil
	} else if e.mode == RevokeKey {
		kid := e.kid
		key, err := me.GetComputedKeyFamily().FindKeyWithKIDUnsafe(kid)
		if err != nil {
			return nil, err
		}
		if !libkb.IsPGP(key) {
			return nil, fmt.Errorf("Key %s is not a PGP key. To revoke device keys, use the `device remove` command.", e.kid)
		}
		for _, activePGPKey := range me.GetComputedKeyFamily().GetActivePGPKeys(false /* sibkeys only */) {
			if activePGPKey.GetKID().Equal(kid) {
				return []keybase1.KID{kid}, nil
			}
		}
		return nil, fmt.Errorf("PGP key %s is not active", e.kid)
	} else {
		return nil, fmt.Errorf("Unknown revoke mode: %d", e.mode)
	}
}

func newProblemSetDevices(u *libkb.User, pset keybase1.ProblemSet) (keybase1.ProblemSetDevices, error) {
	var set keybase1.ProblemSetDevices
	set.ProblemSet = pset

	ckf := u.GetComputedKeyFamily()

	dset := make(map[keybase1.DeviceID]bool)
	for _, f := range pset.Tlfs {
		for _, kid := range f.Solution_kids {
			dev, err := ckf.GetDeviceForKID(kid)
			if err != nil {
				return keybase1.ProblemSetDevices{}, err
			}
			if dset[dev.ID] {
				continue
			}
			dset[dev.ID] = true
			set.Devices = append(set.Devices, *(dev.ProtExport()))
		}
	}
	return set, nil
}