itest: add test for ownership proof

itest/ownership_test.go

@@ -0,0 +1,125 @@
+package itest
+
+import (
+	"context"
+
+	"github.com/lightninglabs/taproot-assets/taprpc"
+	"github.com/lightninglabs/taproot-assets/taprpc/assetwalletrpc"
+	"github.com/lightninglabs/taproot-assets/taprpc/mintrpc"
+	"github.com/stretchr/testify/require"
+)
+
+// testOwnershipVerification tests the asset ownership proof verficiation flow
+// for owned assets. This test also tests the challenge parameter of the
+// ownership verification RPCs.
+func testOwnershipVerification(t *harnessTest) {
+	ctxb := context.Background()
+
+	// Create bob tapd.
+	bobTapd := setupTapdHarness(
+		t.t, t, t.lndHarness.Bob, t.universeServer,
+	)
+	defer func() {
+		require.NoError(t.t, bobTapd.stop(!*noDelete))
+	}()
+
+	// Mint some assets on alice.
+	rpcAssets := MintAssetsConfirmBatch(
+		t.t, t.lndHarness.Miner.Client, t.tapd,
+		[]*mintrpc.MintAssetRequest{issuableAssets[0]},
+	)
+
+	genInfo := rpcAssets[0].AssetGenesis
+
+	currentUnits := issuableAssets[0].Asset.Amount
+	numUnits := currentUnits / 10
+
+	// Bob makes an address in order to receive some of those assets.
+	bobAddr, err := bobTapd.NewAddr(
+		ctxb, &taprpc.NewAddrRequest{
+			AssetId:      genInfo.AssetId,
+			Amt:          numUnits,
+			AssetVersion: rpcAssets[0].Version,
+		},
+	)
+	require.NoError(t.t, err)
+
+	AssertAddrCreated(t.t, bobTapd, rpcAssets[0], bobAddr)
+
+	sendResp, sendEvents := sendAssetsToAddr(t, t.tapd, bobAddr)
+	ConfirmAndAssertOutboundTransfer(
+		t.t, t.lndHarness.Miner.Client, t.tapd, sendResp,
+		genInfo.AssetId,
+		[]uint64{currentUnits - numUnits, numUnits}, 0, 1,
+	)
+	AssertNonInteractiveRecvComplete(t.t, bobTapd, 1)
+	AssertSendEventsComplete(t.t, bobAddr.ScriptKey, sendEvents)
+
+	// Now bob generates an ownership proof for the received assets. This
+	// proof does not contain a challenge.
+	proof, err := bobTapd.ProveAssetOwnership(
+		ctxb, &assetwalletrpc.ProveAssetOwnershipRequest{
+			AssetId:   rpcAssets[0].AssetGenesis.AssetId,
+			ScriptKey: bobAddr.ScriptKey,
+		},
+	)
+	require.NoError(t.t, err)
+
+	// Alice verifies ownership proof.
+	res, err := t.tapd.VerifyAssetOwnership(
+		ctxb, &assetwalletrpc.VerifyAssetOwnershipRequest{
+			ProofWithWitness: proof.ProofWithWitness,
+		},
+	)
+	require.NoError(t.t, err)
+	require.True(t.t, res.ValidProof)
+
+	// Now let's create a dummy 32 byte challenge.
+	ownershipChallenge := [32]byte{
+		1, 2, 3, 4, 5, 6, 7, 8,
+		1, 2, 3, 4, 5, 6, 7, 8,
+		1, 2, 3, 4, 5, 6, 7, 8,
+		1, 2, 3, 4, 5, 6, 7, 8,
+	}
+
+	// Bob creates the proof that includes the above challenge.
+	proof, err = bobTapd.ProveAssetOwnership(
+		ctxb, &assetwalletrpc.ProveAssetOwnershipRequest{
+			AssetId:   rpcAssets[0].AssetGenesis.AssetId,
+			ScriptKey: bobAddr.ScriptKey,
+			Challenge: ownershipChallenge[:],
+		},
+	)
+	require.NoError(t.t, err)
+
+	// Alice verifies ownership proof, providing the challenge.
+	res, err = t.tapd.VerifyAssetOwnership(
+		ctxb, &assetwalletrpc.VerifyAssetOwnershipRequest{
+			ProofWithWitness: proof.ProofWithWitness,
+			Challenge:        ownershipChallenge[:],
+		},
+	)
+	require.NoError(t.t, err)
+	require.True(t.t, res.ValidProof)
+
+	// Now alice edits a byte of the challenge. This challenge should not
+	// match the ownership proof, therefore a failure is expected.
+	ownershipChallenge[0] = 8
+	_, err = t.tapd.VerifyAssetOwnership(
+		ctxb, &assetwalletrpc.VerifyAssetOwnershipRequest{
+			ProofWithWitness: proof.ProofWithWitness,
+			Challenge:        ownershipChallenge[:],
+		},
+	)
+	require.ErrorContains(t.t, err, "invalid transfer asset witness")
+
+	// Now alice trims the challenge to an 8-byte array. The RPC should
+	// fail, we only accept 32-byte values.
+	_, err = t.tapd.VerifyAssetOwnership(
+		ctxb, &assetwalletrpc.VerifyAssetOwnershipRequest{
+			ProofWithWitness: proof.ProofWithWitness,
+			Challenge:        ownershipChallenge[:8],
+		},
+	)
+	require.ErrorContains(t.t, err, "challenge must be 32 bytes")
+}

itest/test_list_on_test.go

@@ -312,6 +312,10 @@ var testCases = []*testCase{
 		name: "channel RPCs",
 		test: testChannelRPCs,
 	},
+	{
+		name: "ownership verification",
+		test: testOwnershipVerification,
+	},
 }
 
 var optionalTestCases = []*testCase{