You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
2.4 KiB
99 lines
2.4 KiB
package p2p
|
|
|
|
import (
|
|
"encoding/hex"
|
|
"io/ioutil"
|
|
|
|
"github.com/tendermint/tendermint/crypto"
|
|
"github.com/tendermint/tendermint/crypto/ed25519"
|
|
tmjson "github.com/tendermint/tendermint/libs/json"
|
|
tmos "github.com/tendermint/tendermint/libs/os"
|
|
)
|
|
|
|
// ID is a hex-encoded crypto.Address
|
|
type ID string
|
|
|
|
// IDByteLength is the length of a crypto.Address. Currently only 20.
|
|
// TODO: support other length addresses ?
|
|
const IDByteLength = crypto.AddressSize
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Persistent peer ID
|
|
// TODO: encrypt on disk
|
|
|
|
// NodeKey is the persistent peer key.
|
|
// It contains the nodes private key for authentication.
|
|
type NodeKey struct {
|
|
// Canonical ID - hex-encoded pubkey's address (IDByteLength bytes)
|
|
ID ID `json:"id"`
|
|
// Private key
|
|
PrivKey crypto.PrivKey `json:"priv_key"`
|
|
}
|
|
|
|
// PubKey returns the peer's PubKey
|
|
func (nodeKey NodeKey) PubKey() crypto.PubKey {
|
|
return nodeKey.PrivKey.PubKey()
|
|
}
|
|
|
|
// SaveAs persists the NodeKey to filePath.
|
|
func (nodeKey NodeKey) SaveAs(filePath string) error {
|
|
jsonBytes, err := tmjson.Marshal(nodeKey)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = ioutil.WriteFile(filePath, jsonBytes, 0600)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// PubKeyToID returns the ID corresponding to the given PubKey.
|
|
// It's the hex-encoding of the pubKey.Address().
|
|
func PubKeyToID(pubKey crypto.PubKey) ID {
|
|
return ID(hex.EncodeToString(pubKey.Address()))
|
|
}
|
|
|
|
// LoadOrGenNodeKey attempts to load the NodeKey from the given filePath. If
|
|
// the file does not exist, it generates and saves a new NodeKey.
|
|
func LoadOrGenNodeKey(filePath string) (NodeKey, error) {
|
|
if tmos.FileExists(filePath) {
|
|
nodeKey, err := LoadNodeKey(filePath)
|
|
if err != nil {
|
|
return NodeKey{}, err
|
|
}
|
|
return nodeKey, nil
|
|
}
|
|
|
|
nodeKey := GenNodeKey()
|
|
|
|
if err := nodeKey.SaveAs(filePath); err != nil {
|
|
return NodeKey{}, err
|
|
}
|
|
|
|
return nodeKey, nil
|
|
}
|
|
|
|
// GenNodeKey generates a new node key.
|
|
func GenNodeKey() NodeKey {
|
|
privKey := ed25519.GenPrivKey()
|
|
return NodeKey{
|
|
ID: PubKeyToID(privKey.PubKey()),
|
|
PrivKey: privKey,
|
|
}
|
|
}
|
|
|
|
// LoadNodeKey loads NodeKey located in filePath.
|
|
func LoadNodeKey(filePath string) (NodeKey, error) {
|
|
jsonBytes, err := ioutil.ReadFile(filePath)
|
|
if err != nil {
|
|
return NodeKey{}, err
|
|
}
|
|
nodeKey := NodeKey{}
|
|
err = tmjson.Unmarshal(jsonBytes, &nodeKey)
|
|
if err != nil {
|
|
return NodeKey{}, err
|
|
}
|
|
nodeKey.ID = PubKeyToID(nodeKey.PubKey())
|
|
return nodeKey, nil
|
|
}
|