2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
3 Copyright (C) 2016-2021 Sergey Matveev <stargrave@stargrave.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 3 of the License.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 "github.com/flynn/noise"
28 "golang.org/x/crypto/blake2b"
29 "golang.org/x/crypto/ed25519"
30 "golang.org/x/crypto/nacl/box"
33 type NodeId [blake2b.Size256]byte
35 func (id NodeId) String() string {
36 return Base32Codec.EncodeToString(id[:])
43 SignPub ed25519.PublicKey
45 Exec map[string][]string
52 Addrs map[string]string
55 OnlineDeadline time.Duration
56 MaxOnlineTime time.Duration
67 SignPub ed25519.PublicKey
68 SignPrv ed25519.PrivateKey
73 func NewNodeGenerate() (*NodeOur, error) {
74 exchPub, exchPrv, err := box.GenerateKey(rand.Reader)
78 signPub, signPrv, err := ed25519.GenerateKey(rand.Reader)
82 noiseKey, err := noise.DH25519.GenerateKeypair(rand.Reader)
86 noisePub := new([32]byte)
87 noisePrv := new([32]byte)
88 copy(noisePrv[:], noiseKey.Private)
89 copy(noisePub[:], noiseKey.Public)
91 id := NodeId(blake2b.Sum256([]byte(signPub)))
104 func (nodeOur *NodeOur) Their() *Node {
108 ExchPub: nodeOur.ExchPub,
109 SignPub: nodeOur.SignPub,
110 FreqChunked: MaxFileSize,
111 FreqMaxSize: MaxFileSize,
115 func NodeIdFromString(raw string) (*NodeId, error) {
116 decoded, err := Base32Codec.DecodeString(raw)
118 return nil, fmt.Errorf("Can not parse node: %s: %s", raw, err)
120 if len(decoded) != blake2b.Size256 {
121 return nil, errors.New("Invalid node id size")
123 nodeId := new(NodeId)
124 copy(nodeId[:], decoded)
128 func (ctx *Ctx) NodeName(id *NodeId) string {
130 node, err := ctx.FindNode(idS)