github.com/igggame/nebulas-go@v2.1.0+incompatible/net/network_key.go (about)

     1  // Copyright (C) 2018 go-nebulas authors
     2  //
     3  // This file is part of the go-nebulas library.
     4  //
     5  // the go-nebulas library 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, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // the go-nebulas library is distributed in the hope that it will be useful,
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  // GNU General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU General Public License
    16  // along with the go-nebulas library.  If not, see <http://www.gnu.org/licenses/>.
    17  //
    18  
    19  package net
    20  
    21  import (
    22  	"crypto/rand"
    23  	"encoding/base64"
    24  	"io/ioutil"
    25  
    26  	crypto "github.com/libp2p/go-libp2p-crypto"
    27  )
    28  
    29  // LoadNetworkKeyFromFile load network priv key from file.
    30  func LoadNetworkKeyFromFile(path string) (crypto.PrivKey, error) {
    31  	data, err := ioutil.ReadFile(path)
    32  	if err != nil {
    33  		return nil, err
    34  	}
    35  	return UnmarshalNetworkKey(string(data))
    36  }
    37  
    38  // LoadNetworkKeyFromFileOrCreateNew load network priv key from file or create new one.
    39  func LoadNetworkKeyFromFileOrCreateNew(path string) (crypto.PrivKey, error) {
    40  	if path == "" {
    41  		return GenerateEd25519Key()
    42  	}
    43  	return LoadNetworkKeyFromFile(path)
    44  }
    45  
    46  // UnmarshalNetworkKey unmarshal network key.
    47  func UnmarshalNetworkKey(data string) (crypto.PrivKey, error) {
    48  	binaryData, err := base64.StdEncoding.DecodeString(data)
    49  	if err != nil {
    50  		return nil, err
    51  	}
    52  
    53  	return crypto.UnmarshalPrivateKey(binaryData)
    54  }
    55  
    56  // MarshalNetworkKey marshal network key.
    57  func MarshalNetworkKey(key crypto.PrivKey) (string, error) {
    58  	binaryData, err := crypto.MarshalPrivateKey(key)
    59  	if err != nil {
    60  		return "", err
    61  	}
    62  
    63  	return base64.StdEncoding.EncodeToString(binaryData), nil
    64  }
    65  
    66  // GenerateEd25519Key return a new generated Ed22519 Private key.
    67  func GenerateEd25519Key() (crypto.PrivKey, error) {
    68  	key, _, err := crypto.GenerateEd25519Key(rand.Reader)
    69  	return key, err
    70  }