()
| 79 | } |
| 80 | |
| 81 | func (c *NAConn) serverHandshake() (err error) { |
| 82 | headerBuf := make([]byte, HeaderSize) |
| 83 | rCount, err := c.CryptoConn.Conn.Read(headerBuf) |
| 84 | if err != nil { |
| 85 | err = errors.Wrap(err, "read node header error") |
| 86 | return |
| 87 | } |
| 88 | |
| 89 | if rCount != HeaderSize { |
| 90 | err = errors.New("invalid ETLS header size") |
| 91 | return |
| 92 | } |
| 93 | |
| 94 | if !bytes.Equal(headerBuf[:etls.MagicSize], etls.MagicBytes[:]) { |
| 95 | err = errors.New("bad ETLS header") |
| 96 | return |
| 97 | } |
| 98 | |
| 99 | // headerBuf len is hash.HashBSize, so there won't be any error |
| 100 | idHash, _ := hash.NewHash(headerBuf[etls.MagicSize : etls.MagicSize+hash.HashBSize]) |
| 101 | rawNodeID := &proto.RawNodeID{Hash: *idHash} |
| 102 | // TODO(auxten): compute the nonce and check difficulty |
| 103 | _, _ = cpuminer.Uint256FromBytes(headerBuf[etls.MagicSize+hash.HashBSize:]) |
| 104 | |
| 105 | isAnonymous := rawNodeID.IsEqual(&kms.AnonymousRawNodeID.Hash) |
| 106 | symmetricKey, err := GetSharedSecretWith(defaultResolver, rawNodeID, isAnonymous) |
| 107 | if err != nil { |
| 108 | err = errors.Wrapf(err, "get shared secret, target: %s", rawNodeID.String()) |
| 109 | return |
| 110 | } |
| 111 | cipher := etls.NewCipher(symmetricKey) |
| 112 | c.CryptoConn.Cipher = cipher // reset cipher |
| 113 | c.remote = *rawNodeID |
| 114 | c.isAnonymous = isAnonymous |
| 115 | |
| 116 | return |
| 117 | } |
| 118 | |
| 119 | func (c *NAConn) clientHandshake() (err error) { |
| 120 | writeBuf := make([]byte, HeaderSize) |
no test coverage detected