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keyinit.go
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keyinit.go
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// Copyright (c) 2015 Mute Communications Ltd.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cryptengine
import (
"math"
"github.com/mutecomm/mute/cipher"
"github.com/mutecomm/mute/log"
"github.com/mutecomm/mute/uid"
"github.com/mutecomm/mute/uid/identity"
"github.com/mutecomm/mute/util/times"
)
func (ce *CryptEngine) addKeyInit(pseudonym, mixaddress, nymaddress, token string) error {
// map pseudonym
id, domain, err := identity.MapPlus(pseudonym)
if err != nil {
return err
}
// TODO: check token?
// generate KeyInit
msg, _, err := ce.keyDB.GetPrivateUID(id, true)
if err != nil {
return err
}
// TODO: fix parameter!
ki, pubKeyHash, privateKey, err := msg.KeyInit(0,
uint64(times.NinetyDaysLater()), 0, true, domain, mixaddress,
nymaddress, cipher.RandReader)
if err != nil {
return err
}
var (
kis []*uid.KeyInit
pubKeyHashes []string
privateKeys []string
tokens []string
)
kis = append(kis, ki)
pubKeyHashes = append(pubKeyHashes, pubKeyHash)
privateKeys = append(privateKeys, privateKey)
tokens = append(tokens, token)
// get JSON-RPC client and capabilities
client, caps, err := ce.cache.Get(domain, ce.keydPort, ce.keydHost,
ce.homedir, "KeyInitRepository.AddKeyInit")
if err != nil {
return err
}
// call server
content := make(map[string]interface{})
content["SigPubKey"] = msg.UIDContent.SIGKEY.PUBKEY
content["KeyInits"] = kis
content["Tokens"] = tokens
reply, err := client.JSONRPCRequest("KeyInitRepository.AddKeyInit", content)
if err != nil {
return err
}
// verify server signatures
sigs, ok := reply["Signatures"].([]interface{})
if !ok {
return log.Errorf("cryptengine: could not add key inits for '%s'", msg.UIDContent.IDENTITY)
}
if len(kis) != len(sigs) {
return log.Error("cryptengine: number of returned signatures does not equal number of sent key init messages")
}
for i, ki := range kis {
sig, ok := sigs[i].(string)
if !ok {
return log.Error("cryptengine: signature is not a string")
}
// TODO: keyserver can return more than one SIGPUBKEY
if err := ki.VerifySrvSig(sig, caps.SIGPUBKEYS[0]); err != nil {
return err
}
}
// store server key init messages and server signatures
for i, ki := range kis {
sig := sigs[i].(string) // cast has been checked already above
if err := ce.keyDB.AddPrivateKeyInit(ki, pubKeyHashes[i], msg.SigPubKey(), privateKeys[i], sig); err != nil {
return err
}
}
return nil
}
func (ce *CryptEngine) fetchKeyInit(pseudonym string) error {
// map pseudonym
id, domain, err := identity.MapPlus(pseudonym)
if err != nil {
return err
}
// get corresponding public ID
msg, _, found, err := ce.keyDB.GetPublicUID(id, math.MaxInt64) // TODO: use simpler API
if err != nil {
return err
}
if !found {
return log.Errorf("not UID for '%s' found", id)
}
// get SIGKEYHASH
sigKeyHash, err := msg.SigKeyHash()
if err != nil {
return err
}
// get JSON-RPC client and capabilities
client, _, err := ce.cache.Get(domain, ce.keydPort, ce.keydHost,
ce.homedir, "KeyInitRepository.FetchKeyInit")
if err != nil {
return err
}
// call server
content := make(map[string]interface{})
content["SigKeyHash"] = sigKeyHash
reply, err := client.JSONRPCRequest("KeyInitRepository.FetchKeyInit", content)
if err != nil {
return err
}
rep, ok := reply["KeyInit"].(string)
if !ok {
return log.Errorf("cryptengine: could not fetch key init for '%s'", sigKeyHash)
}
ki, err := uid.NewJSONKeyInit([]byte(rep))
if err != nil {
return err
}
// store public key init message
if err := ce.keyDB.AddPublicKeyInit(ki); err != nil {
return err
}
return nil
}
func (ce *CryptEngine) flushKeyInit(pseudonym string) error {
// map pseudonym
id, domain, err := identity.MapPlus(pseudonym)
if err != nil {
return err
}
// get corresponding public ID
msg, _, err := ce.keyDB.GetPrivateUID(id, true)
if err != nil {
return err
}
// get JSON-RPC client and capabilities
client, _, err := ce.cache.Get(domain, ce.keydPort, ce.keydHost,
ce.homedir, "KeyInitRepository.FlushKeyInit")
if err != nil {
return err
}
// call server
content := make(map[string]interface{})
nonce, signature := msg.SignNonce()
content["SigPubKey"] = msg.UIDContent.SIGKEY.PUBKEY
content["Nonce"] = nonce
content["Signature"] = signature
_, err = client.JSONRPCRequest("KeyInitRepository.FlushKeyInit", content)
if err != nil {
return err
}
/*
rep, ok := reply["KeyInit"].(string)
if !ok {
return log.Errorf("cryptengine: could not fetch key init for '%s'", sigKeyHash)
}
_, err = uid.NewJSONKeyInit([]byte(rep))
if err != nil {
return err
}
*/
return nil
}