// findAndDecryptPrivatePGPKeys gets the user's private pgp keys if
// any exist and decrypts them.
func (c *PassphraseChange) findAndDecryptPrivatePGPKeys(ctx *Context) ([]libkb.GenericKey, error) {
ska := libkb.SecretKeyArg{
Me: c.me,
KeyType: libkb.PGPKeyType,
}
// get all the pgp key skb blocks from the keyring:
var blocks []*libkb.SKB
err := c.G().LoginState().Keyring(func(kr *libkb.SKBKeyringFile) {
blocks = kr.SearchWithComputedKeyFamily(c.me.GetComputedKeyFamily(), ska)
}, "PassphraseChange - findAndDecryptPrivatePGPKey")
if err != nil {
return nil, err
}
// and the synced secret keys:
syncKeys, err := c.me.AllSyncedSecretKeys(ctx.LoginContext)
if err != nil {
return nil, err
}
if syncKeys != nil {
blocks = append(blocks, syncKeys...)
}
secretRetriever := libkb.NewSecretStore(c.G(), c.me.GetNormalizedName())
// avoid duplicates:
keys := make(map[keybase1.KID]libkb.GenericKey)
for _, block := range blocks {
block.SetUID(c.me.GetUID())
var key libkb.GenericKey
if c.usingPaper {
key, err = block.UnlockWithStoredSecret(secretRetriever)
if err != nil {
switch err.(type) {
case libkb.BadKeyError:
// expected error, ok to proceed...
continue
default:
// unexpected error type:
return nil, err
}
}
} else {
parg := ctx.SecretKeyPromptArg(libkb.SecretKeyArg{}, "passphrase change")
key, err = block.PromptAndUnlock(parg, "your keybase passphrase", secretRetriever, nil, c.me)
if err != nil {
return nil, err
}
}
keys[key.GetKID()] = key
}
keyList := make([]libkb.GenericKey, 0, len(keys))
for _, key := range keys {
keyList = append(keyList, key)
}
return keyList, nil
}
// Push pushes the generated keys to the api server and stores the
// local key security server half on the api server as well.
func (e *DeviceKeygen) Push(ctx *Context, pargs *DeviceKeygenPushArgs) error {
var encSigner libkb.GenericKey
eldestKID := pargs.EldestKID
ds := []libkb.Delegator{}
// append the signing key
if pargs.IsEldest {
ds = e.appendEldest(ds, ctx, pargs)
encSigner = e.naclSignGen.GetKeyPair()
eldestKID = encSigner.GetKID()
} else if !pargs.SkipSignerPush {
ds = e.appendSibkey(ds, ctx, pargs)
encSigner = e.naclSignGen.GetKeyPair()
} else {
encSigner = pargs.Signer
}
ds = e.appendEncKey(ds, ctx, encSigner, eldestKID, pargs.User)
e.pushErr = libkb.DelegatorAggregator(ctx.LoginContext, ds)
// push the LKS server half
e.pushLKS(ctx)
return e.pushErr
}
// fetchLKS gets the encrypted LKS client half from the server.
// It uses encKey to decrypt it. It also returns the passphrase
// generation.
func fetchLKS(ctx *Context, g *libkb.GlobalContext, encKey libkb.GenericKey) (libkb.PassphraseGeneration, []byte, error) {
arg := libkb.APIArg{
Endpoint: "passphrase/recover",
NeedSession: true,
Args: libkb.HTTPArgs{
"kid": encKey.GetKID(),
},
}
if ctx.LoginContext != nil {
arg.SessionR = ctx.LoginContext.LocalSession()
}
res, err := g.API.Get(arg)
if err != nil {
return 0, nil, err
}
ctext, err := res.Body.AtKey("ctext").GetString()
if err != nil {
return 0, nil, err
}
ppGen, err := res.Body.AtKey("passphrase_generation").GetInt()
if err != nil {
return 0, nil, err
}
// Now try to decrypt with the unlocked device key
msg, _, err := encKey.DecryptFromString(ctext)
if err != nil {
return 0, nil, err
}
return libkb.PassphraseGeneration(ppGen), msg, nil
}
// CurrentSession uses the global session to find the session. If
// the user isn't logged in, it returns ErrNoSession.
func (h *SessionHandler) CurrentSession(_ context.Context, sessionID int) (keybase1.Session, error) {
var s keybase1.Session
var token string
var username libkb.NormalizedUsername
var uid keybase1.UID
var deviceSubkey libkb.GenericKey
var err error
aerr := h.G().LoginState().Account(func(a *libkb.Account) {
uid, username, token, deviceSubkey, err = a.UserInfo()
}, "Service - SessionHandler - UserInfo")
if aerr != nil {
return s, aerr
}
if err != nil {
if _, ok := err.(libkb.LoginRequiredError); ok {
return s, ErrNoSession
}
return s, err
}
s.Uid = uid
s.Username = username.String()
s.Token = token
s.DeviceSubkeyKid = deviceSubkey.GetKID()
return s, nil
}
// fetchLKS gets the encrypted LKS client half from the server.
// It uses encKey to decrypt it. It also returns the passphrase
// generation.
func (c *PassphraseChange) fetchLKS(ctx *Context, encKey libkb.GenericKey) (libkb.PassphraseGeneration, []byte, error) {
res, err := c.G().API.Get(
libkb.APIArg{
Endpoint: "passphrase/recover",
NeedSession: true,
Args: libkb.HTTPArgs{
"kid": encKey.GetKID(),
},
})
if err != nil {
return 0, nil, err
}
ctext, err := res.Body.AtKey("ctext").GetString()
if err != nil {
return 0, nil, err
}
ppGen, err := res.Body.AtKey("passphrase_generation").GetInt()
if err != nil {
return 0, nil, err
}
// Now try to decrypt with the unlocked device key
msg, _, err := encKey.DecryptFromString(ctext)
if err != nil {
return 0, nil, err
}
return libkb.PassphraseGeneration(ppGen), msg, nil
}
func (c *PassphraseChange) updatePassphrase(ctx *Context, sigKey libkb.GenericKey, ppGen libkb.PassphraseGeneration, oldClientHalf []byte) error {
pgpKeys, err := c.findAndDecryptPrivatePGPKeys(ctx)
if err != nil {
return err
}
var acctErr error
c.G().LoginState().Account(func(a *libkb.Account) {
// Ready the update argument; almost done, but we need some more stuff.
payload, err := c.commonArgs(a, oldClientHalf, pgpKeys, ppGen)
if err != nil {
acctErr = err
return
}
// get the new passphrase hash out of the args
pwh, ok := payload["pwh"].(string)
if !ok || len(pwh) == 0 {
acctErr = fmt.Errorf("no pwh found in common args")
return
}
// Generate a signature with our unlocked sibling key from device.
proof, err := c.me.UpdatePassphraseProof(sigKey, pwh, ppGen+1)
if err != nil {
acctErr = err
return
}
sig, _, _, err := libkb.SignJSON(proof, sigKey)
if err != nil {
acctErr = err
return
}
payload["sig"] = sig
payload["signing_kid"] = sigKey.GetKID()
postArg := libkb.APIArg{
Endpoint: "passphrase/sign",
NeedSession: true,
JSONPayload: payload,
SessionR: a.LocalSession(),
}
_, err = c.G().API.PostJSON(postArg)
if err != nil {
acctErr = fmt.Errorf("api post to passphrase/sign error: %s", err)
return
}
}, "PassphraseChange.runForcedUpdate")
if acctErr != nil {
return acctErr
}
return nil
}
func keySolvesProblemTLF(key libkb.GenericKey, tlf keybase1.ProblemTLF) bool {
ourKid := key.GetKID()
for _, kid := range tlf.Solution_kids {
if kid.Equal(ourKid) {
return true
}
}
return false
}
func logNoMatch(g *libkb.GlobalContext, key libkb.GenericKey, bundles []keybase1.CiphertextBundle) {
if key == nil {
g.Log.Debug("logNoMatch: key is nil")
return
}
kid := key.GetKID()
g.Log.Debug("logNoMatch: desired kid: %s", kid)
for i, bundle := range bundles {
g.Log.Debug("logNoMatch: kid %d: %s (%v)", i, bundle.Kid, kid.Equal(bundle.Kid))
}
}
func kidMatch(key libkb.GenericKey, bundles []keybase1.CiphertextBundle) (int, bool) {
if key == nil {
return -1, false
}
kid := key.GetKID()
for i, bundle := range bundles {
if kid.Equal(bundle.Kid) {
return i, true
}
}
return -1, false
}
func (e *PGPKeyExportEngine) queryMatch(k libkb.GenericKey) bool {
if len(e.arg.Query) == 0 {
return true
}
var match bool
switch e.qtype {
case either:
match = libkb.KeyMatchesQuery(k, e.arg.Query, e.arg.ExactMatch)
case fingerprint:
match = k.GetFingerprintP().Match(e.arg.Query, e.arg.ExactMatch)
case kid:
match = k.GetKID().Match(e.arg.Query, e.arg.ExactMatch)
}
return match
}