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02757f6735
To make it possible to use a remote signrpc server as a signer for our wallet, we need to change our main interface to sign the message instead of the message's digest. Otherwise we'd need to alter the signrpc.SignMessage RPC to accept a digest instead of only the message which has security implications.
63 lines
1.6 KiB
Go
63 lines
1.6 KiB
Go
package mock
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import (
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"github.com/btcsuite/btcd/btcec"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/lightningnetwork/lnd/keychain"
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)
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// SecretKeyRing is a mock implementation of the SecretKeyRing interface.
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type SecretKeyRing struct {
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RootKey *btcec.PrivateKey
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}
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// DeriveNextKey currently returns dummy values.
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func (s *SecretKeyRing) DeriveNextKey(keyFam keychain.KeyFamily) (
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keychain.KeyDescriptor, error) {
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return keychain.KeyDescriptor{
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PubKey: s.RootKey.PubKey(),
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}, nil
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}
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// DeriveKey currently returns dummy values.
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func (s *SecretKeyRing) DeriveKey(keyLoc keychain.KeyLocator) (keychain.KeyDescriptor,
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error) {
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return keychain.KeyDescriptor{
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PubKey: s.RootKey.PubKey(),
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}, nil
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}
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// DerivePrivKey currently returns dummy values.
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func (s *SecretKeyRing) DerivePrivKey(keyDesc keychain.KeyDescriptor) (*btcec.PrivateKey,
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error) {
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return s.RootKey, nil
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}
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// ECDH currently returns dummy values.
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func (s *SecretKeyRing) ECDH(_ keychain.KeyDescriptor, pubKey *btcec.PublicKey) ([32]byte,
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error) {
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return [32]byte{}, nil
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}
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// SignMessage signs the passed message and ignores the KeyDescriptor.
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func (s *SecretKeyRing) SignMessage(_ keychain.KeyDescriptor,
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msg []byte, doubleHash bool) (*btcec.Signature, error) {
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var digest []byte
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if doubleHash {
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digest = chainhash.DoubleHashB(msg)
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} else {
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digest = chainhash.HashB(msg)
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}
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return s.RootKey.Sign(digest)
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}
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// SignDigestCompact signs the passed digest.
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func (s *SecretKeyRing) SignDigestCompact(_ keychain.KeyDescriptor,
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digest [32]byte) ([]byte, error) {
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return btcec.SignCompact(btcec.S256(), s.RootKey, digest[:], true)
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}
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