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channeldb: use input.GenMultiSigScript

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This commit is contained in:
Oliver Gugger 2023-02-28 19:56:47 +01:00
parent 79c275253c
commit 3beaf7c4c1
No known key found for this signature in database
GPG Key ID: 8E4256593F177720
1 changed files with 6 additions and 23 deletions
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29
channeldb/graph.go
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@ -22,6 +22,7 @@ import (
"github.com/btcsuite/btcd/wire"
"github.com/lightningnetwork/lnd/aliasmgr"
"github.com/lightningnetwork/lnd/batch"
"github.com/lightningnetwork/lnd/input"
"github.com/lightningnetwork/lnd/kvdb"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/routing/route"
@ -3731,35 +3732,17 @@ func (c *ChannelGraph) IsPublicNode(pubKey [33]byte) (bool, error) {
// genMultiSigP2WSH generates the p2wsh'd multisig script for 2 of 2 pubkeys.
func genMultiSigP2WSH(aPub, bPub []byte) ([]byte, error) {
if len(aPub) != 33 || len(bPub) != 33 {
return nil, fmt.Errorf("pubkey size error. Compressed " +
"pubkeys only")
}
// Swap to sort pubkeys if needed. Keys are sorted in lexicographical
// order. The signatures within the scriptSig must also adhere to the
// order, ensuring that the signatures for each public key appears in
// the proper order on the stack.
if bytes.Compare(aPub, bPub) == 1 {
aPub, bPub = bPub, aPub
}
// First, we'll generate the witness script for the multi-sig.
bldr := txscript.NewScriptBuilder()
bldr.AddOp(txscript.OP_2)
bldr.AddData(aPub) // Add both pubkeys (sorted).
bldr.AddData(bPub)
bldr.AddOp(txscript.OP_2)
bldr.AddOp(txscript.OP_CHECKMULTISIG)
witnessScript, err := bldr.Script()
witnessScript, err := input.GenMultiSigScript(aPub, bPub)
if err != nil {
return nil, err
}
// With the witness script generated, we'll now turn it into a p2sh
// With the witness script generated, we'll now turn it into a p2wsh
// script:
// * OP_0 <sha256(script)>
bldr = txscript.NewScriptBuilder()
bldr := txscript.NewScriptBuilder(
txscript.WithScriptAllocSize(input.P2WSHSize),
)
bldr.AddOp(txscript.OP_0)
scriptHash := sha256.Sum256(witnessScript)
bldr.AddData(scriptHash[:])