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110 lines
2.5 KiB
110 lines
2.5 KiB
package types
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import (
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"encoding/json"
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"os"
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"github.com/tendermint/tendermint/crypto"
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"github.com/tendermint/tendermint/crypto/ed25519"
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"github.com/tendermint/tendermint/internal/jsontypes"
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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
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// Private key
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PrivKey crypto.PrivKey
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}
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type nodeKeyJSON struct {
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ID NodeID `json:"id"`
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PrivKey json.RawMessage `json:"priv_key"`
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}
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func (nk NodeKey) MarshalJSON() ([]byte, error) {
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pk, err := jsontypes.Marshal(nk.PrivKey)
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if err != nil {
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return nil, err
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}
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return json.Marshal(nodeKeyJSON{
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ID: nk.ID, PrivKey: pk,
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})
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}
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func (nk *NodeKey) UnmarshalJSON(data []byte) error {
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var nkjson nodeKeyJSON
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if err := json.Unmarshal(data, &nkjson); err != nil {
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return err
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}
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var pk crypto.PrivKey
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if err := jsontypes.Unmarshal(nkjson.PrivKey, &pk); err != nil {
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return err
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}
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*nk = NodeKey{ID: nkjson.ID, PrivKey: pk}
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return nil
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}
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// PubKey returns the peer's PubKey
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func (nk NodeKey) PubKey() crypto.PubKey {
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return nk.PrivKey.PubKey()
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}
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// SaveAs persists the NodeKey to filePath.
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func (nk NodeKey) SaveAs(filePath string) error {
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jsonBytes, err := json.Marshal(nk)
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if err != nil {
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return err
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}
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return os.WriteFile(filePath, jsonBytes, 0600)
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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 := os.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 = json.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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