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itest: add itest for MuSig2 CombineKey

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Before we change anything in the MuSig2 API, we first add an integration
test that makes sure the current version of the API combines keys
according to the v0.4.0 test vectors.
This commit is contained in:
Oliver Gugger 2023-01-27 16:13:09 +01:00
parent 5d22d5eb6c
commit ff8f1371b5
No known key found for this signature in database
GPG Key ID: 8E4256593F177720
1 changed files with 45 additions and 3 deletions
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48
lntest/itest/lnd_taproot_test.go
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@ -35,11 +35,14 @@ const (
)
var (
dummyInternalKeyBytes, _ = hex.DecodeString(
hexDecode = func(keyStr string) []byte {
keyBytes, _ := hex.DecodeString(keyStr)
return keyBytes
}
dummyInternalKey, _ = btcec.ParsePubKey(hexDecode(
"03464805f5468e294d88cf15a3f06aef6c89d63ef1bd7b42db2e0c74c1ac" +
"eb90fe",
)
dummyInternalKey, _ = btcec.ParsePubKey(dummyInternalKeyBytes)
))
)
// testTaproot ensures that the daemon can send to and spend from taproot (p2tr)
@ -61,6 +64,7 @@ func testTaproot(ht *lntemp.HarnessTest) {
testTaprootMuSig2KeySpendRootHash(ht, ht.Alice)
testTaprootMuSig2ScriptSpend(ht, ht.Alice)
testTaprootMuSig2CombinedLeafKeySpend(ht, ht.Alice)
testMuSig2CombineKey(ht, ht.Alice)
testTaprootImportTapscriptFullTree(ht, ht.Alice)
testTaprootImportTapscriptPartialReveal(ht, ht.Alice)
@ -1856,3 +1860,41 @@ func testTaprootCoopClose(ht *lntemp.HarnessTest) {
require.False(ht, assertTaprootDeliveryUsed(closingTxid),
"taproot addr shouldn't be used!")
}
// testMuSig2CombineKey makes sure that combining a key with MuSig2 returns the
// correct result according to the MuSig2 version specified.
func testMuSig2CombineKey(ht *lntemp.HarnessTest, alice *node.HarnessNode) {
testVector040Key1 := hexDecode(
"F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE0" +
"36F9",
)
testVector040Key2 := hexDecode(
"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502B" +
"A659",
)
testVector040Key3 := hexDecode(
"3590A94E768F8E1815C2F24B4D80A8E3149316C3518CE7B7AD338368D038" +
"CA66",
)
resp := alice.RPC.MuSig2CombineKeys(&signrpc.MuSig2CombineKeysRequest{
AllSignerPubkeys: [][]byte{
testVector040Key1, testVector040Key2,
testVector040Key3,
},
TaprootTweak: &signrpc.TaprootTweakDesc{
KeySpendOnly: true,
},
})
expectedFinalKey := hexDecode(
"5b257b4e785d61157ef5303051f45184bd5cb47bc4b4069ed4dd453645" +
"9cb83b",
)
expectedPreTweakKey := hexDecode(
"d70cd69a2647f7390973df48cbfa2ccc407b8b2d60b08c5f1641185c79" +
"98a290",
)
require.Equal(ht, expectedFinalKey, resp.CombinedKey)
require.Equal(ht, expectedPreTweakKey, resp.TaprootInternalKey)
}