// Get Encrypted Public Key from database.
func GetPubkey(log chan string, addrHash objects.Hash) *objects.EncryptedPubkey {
mutex.Lock()
defer mutex.Unlock()
hash := addrHash.GetBytes()
if hashList == nil || dbConn == nil {
return nil
}
if hashList[string(hash)] != PUBKEY {
return nil
}
for s, err := dbConn.Query("SELECT payload FROM pubkey WHERE hash=?", hash); err == nil; err = s.Next() {
var payload []byte
s.Scan(&payload) // Assigns 1st column to rowid, the rest to row
pub := new(objects.EncryptedPubkey)
pub.AddrHash = addrHash
copy(pub.IV[:], payload[:16])
pub.Payload = payload[16:]
return pub
}
// Not Found
return nil
}
func checkPubkey(config *api.ApiConfig, addrHash objects.Hash) []byte {
// First check local DB
detail, err := localdb.GetAddressDetail(addrHash)
if err != nil {
// If not in database, won't be able to decrypt anyway!
return nil
}
if len(detail.Pubkey) > 0 {
if db.Contains(addrHash) != db.PUBKEY {
enc := new(objects.EncryptedPubkey)
enc.IV, enc.Payload, _ = encryption.SymmetricEncrypt(detail.Address, string(detail.Pubkey))
enc.AddrHash = objects.MakeHash(detail.Address)
config.RecvQueue <- *objects.MakeFrame(objects.PUBKEY, objects.BROADCAST, enc)
}
return detail.Pubkey
}
// If not there, check local database
if db.Contains(addrHash) == db.PUBKEY {
enc := db.GetPubkey(config.Log, addrHash)
pubkey := encryption.SymmetricDecrypt(enc.IV, detail.Address, enc.Payload)
pubkey = pubkey[:65]
// Check public Key
x, y := encryption.UnmarshalPubkey(pubkey)
if x == nil {
config.Log <- "Decrypted Public Key Invalid"
return nil
}
address2 := encryption.GetAddress(config.Log, x, y)
if string(detail.Address) != string(address2) {
config.Log <- "Decrypted Public Key doesn't match provided address!"
return nil
}
detail.Pubkey = pubkey
err := localdb.AddUpdateAddress(detail)
if err != nil {
config.Log <- "Error adding pubkey to local database!"
return nil
}
return pubkey
}
// If not there, send a pubkey request
config.RecvQueue <- *objects.MakeFrame(objects.PUBKEY_REQUEST, objects.BROADCAST, &addrHash)
return nil
}
func (service *EMPService) CreateAddress(r *http.Request, args *NilParam, reply *objects.AddressDetail) error {
if !basicAuth(service.Config, r) {
service.Config.Log <- fmt.Sprintf("Unauthorized RPC Request from: %s", r.RemoteAddr)
return errors.New("Unauthorized")
}
// Create Address
priv, x, y := encryption.CreateKey(service.Config.Log)
reply.Privkey = priv
if x == nil {
return errors.New("Key Pair Generation Error")
}
reply.Pubkey = encryption.MarshalPubkey(x, y)
reply.IsRegistered = true
reply.Address = encryption.GetAddress(service.Config.Log, x, y)
if reply.Address == nil {
return errors.New("Could not create address, function returned nil.")
}
reply.String = encryption.AddressToString(reply.Address)
// Add Address to Database
err := localdb.AddUpdateAddress(reply)
if err != nil {
service.Config.Log <- fmt.Sprintf("Error Adding Address: ", err)
return err
}
// Send Pubkey to Network
encPub := new(objects.EncryptedPubkey)
encPub.AddrHash = objects.MakeHash(reply.Address)
encPub.IV, encPub.Payload, err = encryption.SymmetricEncrypt(reply.Address, string(reply.Pubkey))
if err != nil {
service.Config.Log <- fmt.Sprintf("Error Encrypting Pubkey: ", err)
return nil
}
// Record Pubkey for Network
service.Config.RecvQueue <- *objects.MakeFrame(objects.PUBKEY, objects.BROADCAST, encPub)
return nil
}