func createUser(username, password, skek string) bool {
// hashed_password
hashed_password := cryptoWrapper.HashPassword(username, password)
// encrypt kek
ps := []string{password, username, salt}
key := []byte(string([]rune(strings.Join(ps, "-"))[0:32]))
pkek := []byte(skek)
encrypted_kek := hex.EncodeToString(cryptoWrapper.Encrypt(key, pkek))
// generate rsa keypair for user
size := 1024
priv, err := rsa.GenerateKey(rand.Reader, size)
if err != nil {
revel.TRACE.Println("failed to generate key")
}
if bits := priv.N.BitLen(); bits != size {
revel.TRACE.Println("key too short (%d vs %d)", bits, size)
}
pub, err := x509.MarshalPKIXPublicKey(&priv.PublicKey)
rsa_public_string := hex.EncodeToString(pub)
revel.TRACE.Println(priv)
// encrypt rsa private keypair
encrypted_rsa_private := hex.EncodeToString(cryptoWrapper.Encrypt(key, x509.MarshalPKCS1PrivateKey(priv)))
// connect to mongodb
session, err := mgo.Dial("localhost")
if err != nil {
panic(err)
}
defer session.Close()
// save user object
dbu := session.DB("landline").C("Users")
user_object_map := make(map[string]string)
user_object_map["username"] = username
user_object_map["hashed_password"] = hashed_password
user_object_map["encrypted_kek"] = encrypted_kek
user_object_map["encrypted_rsa_private"] = encrypted_rsa_private
user_object_map["rsa_public"] = rsa_public_string
err = dbu.Insert(user_object_map)
if err != nil {
panic(err)
}
return true
}
func (c SyncableObjects) CreateObjectAction(object_key string) revel.Result {
revel.TRACE.Println(c.Params.Values)
// build kv map
key_values := make(map[string]interface{})
// parse params and put into map
for k, v := range c.Params.Values {
if k != "object_key" {
key_values[k] = v[0]
}
}
revel.TRACE.Println(key_values)
// convert map to json to string of json
key_values_map, err := json.Marshal(key_values)
if err != nil {
revel.TRACE.Println(err)
}
key_values_string := string(key_values_map[:])
revel.TRACE.Println(key_values_string)
// encrypt json string
kv_string_encrypted := hex.EncodeToString(cryptoWrapper.Encrypt([]byte(c.Session["kek"]), []byte(key_values_string)))
revel.TRACE.Println(kv_string_encrypted)
// test decrypt
kv_hex, err := hex.DecodeString(kv_string_encrypted)
if err != nil {
revel.TRACE.Println(err)
}
kv_plain := string(cryptoWrapper.Decrypt([]byte(c.Session["kek"]), kv_hex))
revel.TRACE.Println(kv_plain)
// create object
object_map := make(map[string]interface{})
uuid, err := uuid.NewV4()
object_map["uuid"] = uuid.String()
object_map["object_type"] = object_key
object_map["key_value_pairs"] = kv_string_encrypted
object_map["time_modified_since_creation"] = float64(0)
// connect to mongodb
session, err := mgo.Dial("localhost")
if err != nil {
panic(err)
}
defer session.Close()
// insert into db
dbc := session.DB("landline").C("SyncableObjects")
err = dbc.Insert(object_map)
if err != nil {
panic(err)
}
// redirect
c.Flash.Success("Object created")
return c.Redirect(routes.SyncableObjects.ViewObject(object_key, object_map["uuid"].(string)))
}
func main() {
// connect to mongodb
session, err := mgo.Dial("localhost")
if err != nil {
panic(err)
}
defer session.Close()
// connect to port
c := &serial.Config{Name: "/dev/ttyS0", Baud: 38400}
s, err := serial.OpenPort(c)
if err != nil {
log.Fatal(err)
}
// write message
n, err := s.Write([]byte("LDLN Serial is listening"))
if err != nil {
log.Fatal(err)
}
// read messages
for {
buf := make([]byte, 2048)
n, err = s.Read(buf)
if err != nil {
log.Fatal(err)
}
log.Printf("Incoming on serial: %q", buf[:n])
// split by double pipes /
// first part is user:pass
// second part is object type
// third part is key/value pairs, separated by pipes |
// each key/value pair is seperated by :
// i.e. user:pass/memo/timestamp:xxx|gps:xxx|humidity:xxx|temp:xxx|soilsensor:xxx|dfo10sensor:xxx|gyro:xxx
// i.e. user:pass/object_type/timestamp:xxx|gps:xxx|humidity:xxx|temp:xxx|soilsensor:xxx|dfo10sensor:xxx|gyro:xxx
// convert string to JSON to map[string]interface{}
v := make(map[string]interface{})
err := json.Unmarshal(buf[:n], &v)
if err != nil {
log.Printf("Not a JSON object")
} else {
// get auth
username := v["username"].(string)
password := v["password"].(string)
// create object
object_map := make(map[string]interface{})
object_map["uuid"] = v["uuid"].(string)
object_map["object_type"] = v["object_type"].(string)
object_map["time_modified_since_creation"] = v["time_modified_since_creation"].(float64)
// encrypted payload
// object_map["key_value_pairs"] = v["key_value_pairs"].(string)
// plaintext to be encrypted payload
byt, err := json.Marshal(v["key_value_pairs_plaintext"].(map[string]interface{}))
if err != nil {
panic(err)
}
log.Printf(string(byt[:]))
dek := cryptoWrapper.GetKeyFromUsernamePassword(username, password)
ciphertext := cryptoWrapper.Encrypt(dek, byt)
if ciphertext != nil {
object_map["key_value_pairs"] = ciphertext
// db insert
mc := session.DB("landline").C("SyncableObjects")
err = mc.Insert(object_map)
if err != nil {
panic(err)
}
log.Printf("Inserted object %q into database.", v["uuid"].(string))
} else {
s.Write([]byte("Encryption failed"))
log.Printf("Encryption failed")
}
}
}
}
