github.com/ari-anchor/sei-tendermint@v0.0.0-20230519144642-dc826b7b56bb/types/node_key.go (about) 1 package types 2 3 import ( 4 "encoding/json" 5 "os" 6 7 "github.com/ari-anchor/sei-tendermint/crypto" 8 "github.com/ari-anchor/sei-tendermint/crypto/ed25519" 9 "github.com/ari-anchor/sei-tendermint/internal/jsontypes" 10 tmos "github.com/ari-anchor/sei-tendermint/libs/os" 11 ) 12 13 //------------------------------------------------------------------------------ 14 // Persistent peer ID 15 // TODO: encrypt on disk 16 17 // NodeKey is the persistent peer key. 18 // It contains the nodes private key for authentication. 19 type NodeKey struct { 20 // Canonical ID - hex-encoded pubkey's address (IDByteLength bytes) 21 ID NodeID 22 // Private key 23 PrivKey crypto.PrivKey 24 } 25 26 type nodeKeyJSON struct { 27 ID NodeID `json:"id"` 28 PrivKey json.RawMessage `json:"priv_key"` 29 } 30 31 func (nk NodeKey) MarshalJSON() ([]byte, error) { 32 pk, err := jsontypes.Marshal(nk.PrivKey) 33 if err != nil { 34 return nil, err 35 } 36 return json.Marshal(nodeKeyJSON{ 37 ID: nk.ID, PrivKey: pk, 38 }) 39 } 40 41 func (nk *NodeKey) UnmarshalJSON(data []byte) error { 42 var nkjson nodeKeyJSON 43 if err := json.Unmarshal(data, &nkjson); err != nil { 44 return err 45 } 46 var pk crypto.PrivKey 47 if err := jsontypes.Unmarshal(nkjson.PrivKey, &pk); err != nil { 48 return err 49 } 50 *nk = NodeKey{ID: nkjson.ID, PrivKey: pk} 51 return nil 52 } 53 54 // PubKey returns the peer's PubKey 55 func (nk NodeKey) PubKey() crypto.PubKey { 56 return nk.PrivKey.PubKey() 57 } 58 59 // SaveAs persists the NodeKey to filePath. 60 func (nk NodeKey) SaveAs(filePath string) error { 61 jsonBytes, err := json.Marshal(nk) 62 if err != nil { 63 return err 64 } 65 return os.WriteFile(filePath, jsonBytes, 0600) 66 } 67 68 // LoadOrGenNodeKey attempts to load the NodeKey from the given filePath. If 69 // the file does not exist, it generates and saves a new NodeKey. 70 func LoadOrGenNodeKey(filePath string) (NodeKey, error) { 71 if tmos.FileExists(filePath) { 72 nodeKey, err := LoadNodeKey(filePath) 73 if err != nil { 74 return NodeKey{}, err 75 } 76 return nodeKey, nil 77 } 78 79 nodeKey := GenNodeKey() 80 81 if err := nodeKey.SaveAs(filePath); err != nil { 82 return NodeKey{}, err 83 } 84 85 return nodeKey, nil 86 } 87 88 // GenNodeKey generates a new node key. 89 func GenNodeKey() NodeKey { 90 privKey := ed25519.GenPrivKey() 91 return NodeKey{ 92 ID: NodeIDFromPubKey(privKey.PubKey()), 93 PrivKey: privKey, 94 } 95 } 96 97 // LoadNodeKey loads NodeKey located in filePath. 98 func LoadNodeKey(filePath string) (NodeKey, error) { 99 jsonBytes, err := os.ReadFile(filePath) 100 if err != nil { 101 return NodeKey{}, err 102 } 103 nodeKey := NodeKey{} 104 err = json.Unmarshal(jsonBytes, &nodeKey) 105 if err != nil { 106 return NodeKey{}, err 107 } 108 nodeKey.ID = NodeIDFromPubKey(nodeKey.PubKey()) 109 return nodeKey, nil 110 }