34 lines
899 B
Go
34 lines
899 B
Go
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package lnwallet
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import (
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"fmt"
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"github.com/roasbeef/btcd/btcec"
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"github.com/roasbeef/btcd/chaincfg/chainhash"
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)
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// MessageSigner is used for creation the signatures using the node identity key.
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// By message we mean the whole range of data that might require our approve,
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// starting from node, channel, channel update announcements and ending by user
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// data.
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type MessageSigner struct {
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identityKey *btcec.PrivateKey
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}
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// NewMessageSigner returns the new instance of message signer.
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func NewMessageSigner(key *btcec.PrivateKey) *MessageSigner {
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return &MessageSigner{
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identityKey: key,
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}
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}
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// SignData sign the message with the node private key.
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func (s *MessageSigner) SignData(data []byte) (*btcec.Signature, error) {
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sign, err := s.identityKey.Sign(chainhash.DoubleHashB(data))
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if err != nil {
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return nil, fmt.Errorf("can't sign the message: %v", err)
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}
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return sign, nil
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}
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