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85 lines
2.0 KiB
85 lines
2.0 KiB
package types
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import (
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"io/ioutil"
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"github.com/tendermint/tendermint/crypto"
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"github.com/tendermint/tendermint/crypto/ed25519"
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tmjson "github.com/tendermint/tendermint/libs/json"
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tmos "github.com/tendermint/tendermint/libs/os"
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)
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//------------------------------------------------------------------------------
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// Persistent peer ID
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// TODO: encrypt on disk
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// NodeKey is the persistent peer key.
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// It contains the nodes private key for authentication.
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type NodeKey struct {
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// Canonical ID - hex-encoded pubkey's address (IDByteLength bytes)
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ID NodeID `json:"id"`
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// Private key
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PrivKey crypto.PrivKey `json:"priv_key"`
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}
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// PubKey returns the peer's PubKey
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func (nodeKey NodeKey) PubKey() crypto.PubKey {
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return nodeKey.PrivKey.PubKey()
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}
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// SaveAs persists the NodeKey to filePath.
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func (nodeKey NodeKey) SaveAs(filePath string) error {
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jsonBytes, err := tmjson.Marshal(nodeKey)
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if err != nil {
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return err
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}
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err = ioutil.WriteFile(filePath, jsonBytes, 0600)
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if err != nil {
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return err
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}
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return nil
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}
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// LoadOrGenNodeKey attempts to load the NodeKey from the given filePath. If
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// the file does not exist, it generates and saves a new NodeKey.
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func LoadOrGenNodeKey(filePath string) (NodeKey, error) {
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if tmos.FileExists(filePath) {
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nodeKey, err := LoadNodeKey(filePath)
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if err != nil {
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return NodeKey{}, err
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}
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return nodeKey, nil
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}
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nodeKey := GenNodeKey()
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if err := nodeKey.SaveAs(filePath); err != nil {
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return NodeKey{}, err
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}
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return nodeKey, nil
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}
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// GenNodeKey generates a new node key.
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func GenNodeKey() NodeKey {
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privKey := ed25519.GenPrivKey()
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return NodeKey{
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ID: NodeIDFromPubKey(privKey.PubKey()),
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PrivKey: privKey,
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}
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}
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// LoadNodeKey loads NodeKey located in filePath.
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func LoadNodeKey(filePath string) (NodeKey, error) {
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jsonBytes, err := ioutil.ReadFile(filePath)
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if err != nil {
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return NodeKey{}, err
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}
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nodeKey := NodeKey{}
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err = tmjson.Unmarshal(jsonBytes, &nodeKey)
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if err != nil {
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return NodeKey{}, err
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}
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nodeKey.ID = NodeIDFromPubKey(nodeKey.PubKey())
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return nodeKey, nil
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}
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