Exemplo n.º 1
0
func (cert *obfs4ServerCert) unpack() (*ntor.NodeID, *ntor.PublicKey) {
	if len(cert.raw) != certLength {
		panic(fmt.Sprintf("cert length %d is invalid", len(cert.raw)))
	}

	nodeID, _ := ntor.NewNodeID(cert.raw[:ntor.NodeIDLength])
	pubKey, _ := ntor.NewPublicKey(cert.raw[ntor.NodeIDLength:])

	return nodeID, pubKey
}
Exemplo n.º 2
0
func newJSONServerState(stateDir string, js *jsonServerState) (err error) {
	// Generate everything a server needs, using the cryptographic PRNG.
	var st obfs4ServerState
	rawID := make([]byte, ntor.NodeIDLength)
	if err = csrand.Bytes(rawID); err != nil {
		return
	}
	if st.nodeID, err = ntor.NewNodeID(rawID); err != nil {
		return
	}
	if st.identityKey, err = ntor.NewKeypair(false); err != nil {
		return
	}
	if st.drbgSeed, err = drbg.NewSeed(); err != nil {
		return
	}
	st.iatMode = iatNone

	// Encode it into JSON format and write the state file.
	js.NodeID = st.nodeID.Hex()
	js.PrivateKey = st.identityKey.Private().Hex()
	js.PublicKey = st.identityKey.Public().Hex()
	js.DrbgSeed = st.drbgSeed.Hex()
	js.IATMode = st.iatMode

	var encoded []byte
	if encoded, err = json.Marshal(js); err != nil {
		return
	}

	if err = ioutil.WriteFile(path.Join(stateDir, stateFile), encoded, 0600); err != nil {
		return err
	}

	return nil
}