regression tests (#1303)

Signed-off-by: Angelo De Caro <[email protected]>

Author: adecaro

.github/workflows/tests.yml

@@ -51,7 +51,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        tests: [unit-tests, unit-tests-race]
+        tests: [unit-tests, unit-tests-race, unit-tests-regression]
 
     steps:
       - name: Checkout code

Makefile

@@ -39,15 +39,19 @@ download-fabric:
 
 .PHONY: unit-tests
 unit-tests:
-	@go test -cover $(shell go list ./... | grep -v '/integration/')
+	@go test -cover $(shell go list ./... | grep -v '/integration/' | grep -v 'regression')
 	cd integration/nwo/; go test -cover ./...
 	cd token/services/storage/db/kvs/hashicorp/; go test -cover ./...
 
 .PHONY: unit-tests-race
 unit-tests-race:
-	@export GORACE=history_size=7; go test -race -cover $(shell go list ./... | grep -v '/integration/')
+	@export GORACE=history_size=7; go test -race -cover $(shell go list ./... | grep -v '/integration/'  | grep -v 'regression')
 	cd integration/nwo/; go test -cover ./...
 
+.PHONY: unit-tests-regression
+unit-tests-regression:
+	@go test -race -timeout 0 -cover $(shell go list ./... | grep -v '/integration/' | grep 'regression')
+
 .PHONY: install-softhsm
 install-softhsm:
 	./ci/scripts/install_softhsm.sh

token/core/zkatdlog/nogh/v1/benchmark/setup.go

@@ -11,9 +11,12 @@ import (
 	"crypto/ecdsa"
 	"crypto/elliptic"
 	"crypto/rand"
+	"encoding/base64"
+	"encoding/json"
 	"fmt"
 	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/IBM/idemix/bccsp/types"
 	math "github.com/IBM/mathlib"
@@ -30,6 +33,12 @@ import (
 	"github.com/hyperledger-labs/fabric-token-sdk/token/services/storage/db/kvs"
 )
 
+type SetupConfigurationSer struct {
+	PP      string `json:"pp"` // Encoded in base64
+	Bits    uint64 `json:"bits"`
+	CurveID int    `json:"curveID"`
+}
+
 // SetupConfiguration holds the prepared public parameters and related
 // identities/signers used by a single benchmark configuration.
 //
@@ -42,6 +51,8 @@ type SetupConfiguration struct {
 	OwnerIdentity *OwnerIdentity
 	AuditorSigner *Signer
 	IssuerSigner  *Signer
+	Bits          uint64
+	CurveID       math.CurveID
 }
 
 // SetupConfigurations contains a set of named benchmark configurations.
@@ -112,6 +123,8 @@ func NewSetupConfigurations(idemixTestdataPath string, bits []uint64, curveIDs [
 			}
 			pp.AddAuditor(auditorID)
 			configurations[key(bit, curveID)] = &SetupConfiguration{
+				Bits:          bit,
+				CurveID:       curveID,
 				PP:            pp,
 				OwnerIdentity: oID,
 				AuditorSigner: auditorSigner,
@@ -146,7 +159,71 @@ func (c *SetupConfigurations) GetSetupConfiguration(bits uint64, curveID math.Cu
 }
 
 func key(bits uint64, curveID math.CurveID) string {
-	return fmt.Sprintf("%d-%d", bits, curveID)
+	return fmt.Sprintf("%d-%s", bits, math2.CurveIDToString(curveID))
+}
+
+// SaveTo writes each configuration to disk under the provided directory.
+// For each entry in the Configurations map a folder with the map key is
+// created. Inside that folder a file named `pp.json` is written. The file
+// contains a JSON document with the base64-encoded serialized public
+// parameters and the metadata bits and curve_id.
+func (c *SetupConfigurations) SaveTo(dir string) error {
+	if c == nil {
+		return errors.Errorf("nil SetupConfigurations")
+	}
+	// Ensure target base directory exists
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		return errors.Wrapf(err, "failed creating base dir [%s]")
+	}
+
+	for k, cfg := range c.Configurations {
+		if strings.ContainsAny(k, "/\\") {
+			return errors.Errorf("invalid configuration key: %s", k)
+		}
+		if cfg == nil {
+			return errors.Errorf("nil configuration for key: %s", k)
+		}
+		if cfg.PP == nil {
+			return errors.Errorf("nil public parameters for key: %s", k)
+		}
+
+		// serialize public params
+		ppBytes, err := cfg.PP.Serialize()
+		if err != nil {
+			return errors.WithMessagef(err, "failed serializing public params for key: %s", k)
+		}
+
+		// prepare JSON payload
+		payload := &SetupConfigurationSer{
+			PP:      base64.StdEncoding.EncodeToString(ppBytes),
+			Bits:    cfg.Bits,
+			CurveID: int(cfg.CurveID),
+		}
+		data, err := json.MarshalIndent(payload, "", "  ")
+		if err != nil {
+			return errors.Wrap(err, "failed marshalling json payload")
+		}
+
+		// create target directory and write
+		targetDir := filepath.Join(dir, filepath.Base(k))
+		if err := os.MkdirAll(targetDir, 0o755); err != nil {
+			return errors.WithMessagef(err, "failed creating dir for key: %s", k)
+		}
+
+		// Write params.txt containing base64(ppBytes)
+		paramsEncoded := payload.PP
+		finalParamsPath := filepath.Join(targetDir, "params.txt")
+		if err := os.WriteFile(finalParamsPath, []byte(paramsEncoded), 0o644); err != nil {
+			return errors.WithMessagef(err, "failed writing params file for key: %s", k)
+		}
+
+		// Write pp.json file
+		finalPath := filepath.Join(targetDir, "pp.json")
+		if err := os.WriteFile(finalPath, data, 0o644); err != nil {
+			return errors.WithMessagef(err, "failed writing pp.json for key: %s", k)
+		}
+	}
+	return nil
 }
 
 // OwnerIdentity represents the owner identity used by benchmarks. It

token/core/zkatdlog/nogh/v1/benchmark/setup_test.go

@@ -0,0 +1,71 @@
+/*
+Copyright IBM Corp. All Rights Reserved.
+
+SPDX-License-Identifier: Apache-2.0
+*/
+
+package benchmark
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"testing"
+
+	math "github.com/IBM/mathlib"
+	"github.com/hyperledger-labs/fabric-token-sdk/token/core/zkatdlog/nogh/v1/setup"
+	"github.com/stretchr/testify/require"
+)
+
+func TestSaveTo(t *testing.T) {
+	require := require.New(t)
+	dir := t.TempDir()
+	bits := uint64(16)
+	curve := math.BN254
+	pp, err := setup.Setup(bits, []byte("dummy-issuer-pk"), curve)
+	require.NoError(err, "failed to create public params")
+
+	cfg := &SetupConfigurations{
+		Configurations: map[string]*SetupConfiguration{
+			key(bits, curve): {
+				Bits:    bits,
+				CurveID: curve,
+				PP:      pp,
+			},
+		},
+	}
+
+	require.NoError(cfg.SaveTo(dir), "SaveTo failed")
+
+	targetDir := filepath.Join(dir, key(bits, curve))
+	st, err := os.Stat(targetDir)
+	require.NoError(err, "expected target dir to exist")
+	require.True(st.IsDir(), "expected target to be a directory")
+
+	filePath := filepath.Join(targetDir, "pp.json")
+	data, err := os.ReadFile(filePath)
+	require.NoError(err, "failed reading pp.json")
+
+	var payload SetupConfigurationSer
+	require.NoError(json.Unmarshal(data, &payload), "failed to unmarshal pp.json")
+
+	// bits and curve_id are numbers decoded as float64
+	require.Equal(bits, payload.Bits, "bits mismatch")
+	require.Equal(int(curve), payload.CurveID, "curve_id mismatch")
+
+	ppB64 := payload.PP
+	decoded, err := base64.StdEncoding.DecodeString(ppB64)
+	require.NoError(err, "failed to base64 decode pp")
+	require.NotEmpty(decoded, "decoded pp is empty")
+
+	// check params.txt exists and contains the same base64 string
+	paramsPath := filepath.Join(targetDir, "params.txt")
+	paramsData, err := os.ReadFile(paramsPath)
+	require.NoError(err, "failed reading params.txt")
+	require.Equal(ppB64, string(paramsData), "params.txt content mismatch")
+
+	// try deserializing the stored public params to ensure it's valid
+	_, err = setup.NewPublicParamsFromBytes(decoded, pp.DriverName, pp.DriverVersion)
+	require.NoError(err, "failed to deserialize stored public params")
+}

token/core/zkatdlog/nogh/v1/validator/regression/regression_test.go

@@ -0,0 +1,130 @@
+/*
+Copyright IBM Corp. All Rights Reserved.
+
+SPDX-License-Identifier: Apache-2.0
+*/
+
+package regression_test
+
+import (
+	"embed"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"path/filepath"
+	"testing"
+
+	"github.com/hyperledger-labs/fabric-token-sdk/token"
+	"github.com/hyperledger-labs/fabric-token-sdk/token/core"
+	fabtoken "github.com/hyperledger-labs/fabric-token-sdk/token/core/fabtoken/v1/driver"
+	dlog "github.com/hyperledger-labs/fabric-token-sdk/token/core/zkatdlog/nogh/v1/driver"
+	"github.com/hyperledger-labs/fabric-token-sdk/token/services/network/fabric/tcc"
+	tk "github.com/hyperledger-labs/fabric-token-sdk/token/token"
+	"github.com/stretchr/testify/require"
+)
+
+//go:embed testdata
+var testDataFS embed.FS
+
+// TestRegression runs previously recorded regression test vectors contained in the
+// `testdata/<variant>` directories. Each directory contains a `params.txt` and a
+// sequence of JSON files under `transfers/output.<n>.json` representing serialized
+// token requests and their associated txids. The test unmarshals each recorded
+// request and verifies it against the validator to ensure the library remains
+// backwards compatible.
+//
+// Notes:
+//   - The testdata used here is generated by `testdata/generator`. If you need to
+//     re-generate vectors for a new setup, run that generator and commit the
+//     produced artifacts to the corresponding `testdata/...` directory.
+//   - The test expects 64 transfer vectors (output.0..output.63). Update the loop
+//     range in `testRegression` if you add or remove vectors.
+func TestRegression(t *testing.T) {
+	t.Parallel()
+	for _, action := range []string{"transfers", "issues", "redeems", "swaps"} {
+		testRegressionParallel(t, "testdata/32-BLS12_381_BBS_GURVY", fmt.Sprintf("%s_i1_o1", action))
+		testRegressionParallel(t, "testdata/32-BLS12_381_BBS_GURVY", fmt.Sprintf("%s_i1_o2", action))
+		testRegressionParallel(t, "testdata/32-BLS12_381_BBS_GURVY", fmt.Sprintf("%s_i2_o1", action))
+		testRegressionParallel(t, "testdata/32-BLS12_381_BBS_GURVY", fmt.Sprintf("%s_i2_o2", action))
+
+		testRegressionParallel(t, "testdata/64-BLS12_381_BBS_GURVY", fmt.Sprintf("%s_i1_o1", action))
+		testRegressionParallel(t, "testdata/64-BLS12_381_BBS_GURVY", fmt.Sprintf("%s_i1_o2", action))
+		testRegressionParallel(t, "testdata/64-BLS12_381_BBS_GURVY", fmt.Sprintf("%s_i2_o1", action))
+		testRegressionParallel(t, "testdata/64-BLS12_381_BBS_GURVY", fmt.Sprintf("%s_i2_o2", action))
+
+		testRegressionParallel(t, "testdata/32-BN254", fmt.Sprintf("%s_i1_o1", action))
+		testRegressionParallel(t, "testdata/32-BN254", fmt.Sprintf("%s_i1_o2", action))
+		testRegressionParallel(t, "testdata/32-BN254", fmt.Sprintf("%s_i2_o1", action))
+		testRegressionParallel(t, "testdata/32-BN254", fmt.Sprintf("%s_i2_o2", action))
+
+		testRegressionParallel(t, "testdata/64-BN254", fmt.Sprintf("%s_i1_o1", action))
+		testRegressionParallel(t, "testdata/64-BN254", fmt.Sprintf("%s_i1_o2", action))
+		testRegressionParallel(t, "testdata/64-BN254", fmt.Sprintf("%s_i2_o1", action))
+		testRegressionParallel(t, "testdata/64-BN254", fmt.Sprintf("%s_i2_o2", action))
+	}
+}
+
+func testRegressionParallel(t *testing.T, rootDir, subFolder string) {
+	t.Helper()
+	t.Run(fmt.Sprintf("%s-%s", rootDir, subFolder), func(t *testing.T) {
+		t.Parallel()
+		testRegression(t, rootDir, subFolder)
+	})
+}
+
+func testRegression(t *testing.T, rootDir, subFolder string) {
+	t.Helper()
+	t.Logf("regression test for [%s:%s]", rootDir, subFolder)
+	paramsData, err := testDataFS.ReadFile(filepath.Join(rootDir, "params.txt"))
+	require.NoError(t, err)
+
+	ppRaw, err := base64.StdEncoding.DecodeString(string(paramsData))
+	require.NoError(t, err)
+
+	_, tokenValidator, err := tokenServicesFactory(ppRaw)
+	require.NoError(t, err)
+
+	var tokenData struct {
+		ReqRaw []byte `json:"req_raw"`
+		TXID   string `json:"txid"`
+	}
+	for i := range 64 {
+		jsonData, err := testDataFS.ReadFile(
+			filepath.Join(
+				rootDir,
+				subFolder,
+				fmt.Sprintf("output.%d.json", i),
+			),
+		)
+		require.NoError(t, err)
+		err = json.Unmarshal(jsonData, &tokenData)
+		require.NoError(t, err)
+		_, _, err = tokenValidator.UnmarshallAndVerifyWithMetadata(
+			t.Context(),
+			&fakeLedger{},
+			token.RequestAnchor(tokenData.TXID),
+			tokenData.ReqRaw,
+		)
+		require.NoError(t, err)
+	}
+}
+
+func tokenServicesFactory(bytes []byte) (tcc.PublicParameters, tcc.Validator, error) {
+	is := core.NewPPManagerFactoryService(fabtoken.NewPPMFactory(), dlog.NewPPMFactory())
+
+	ppm, err := is.PublicParametersFromBytes(bytes)
+	if err != nil {
+		return nil, nil, err
+	}
+	v, err := is.DefaultValidator(ppm)
+	if err != nil {
+		return nil, nil, err
+	}
+	return ppm, token.NewValidator(v), nil
+}
+
+type fakeLedger struct{}
+
+func (*fakeLedger) GetState(_ tk.ID) ([]byte, error) {
+	panic("ciao")
+}

token/core/zkatdlog/nogh/v1/validator/regression/testdata/32-BLS12_381_BBS_GURVY/issues_i1_o1/output.0.json

@@ -0,0 +1,4 @@
+{
+  "txid": "1",
+  "req_raw": 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sPlq5xgHQHm477UQ338nT8XGbyU2RR25RGBlN/IpdnD6qO9Sj+dLRBGAR/q+cmCIpijDe/XzfTyFkpSV8N9mNq1negu4M1SDC0FkaQsHa9XWJC/g4dGsfcE0O4lkMbtntRJI3IoqYCh4M0QugGDCFj9d2mNqlk32ftfrKHY/YHzpjXbOzjBiaJZ8EYAmOQLWwQf8eZknurAWepFOSGnCjcuZNbLsA8U4JNi2+QmGDlBxjrEDjtf//Gf3piwZ/e+03N7siiHnkmqLCWBHB0+c8LPV8MBakaDDzyNjrsYnCa8C+aTFP8woTB3UzhBpICkYwRAIgY5muvFIMZF6x3qwkaNqQkBq4PWEHF5l0oSwdjVCWOp0CIF3034HDtKqRe+k5eiawaXHakx0Qb6Kbop5VmwhkErEgIpICCo8CCsEBCr4BMIG7EwR4NTA5BIGyLS0tLS1CRUdJTiBQVUJMSUMgS0VZLS0tLS0KTUZrd0V3WUhLb1pJemowQ0FRWUlLb1pJemowREFRY0RRZ0FFamtYaU5FbTEwM0NvVVFTNXdWbE5zZ3JURzluNAprLzBqL0ZiL25QUTcrSm5QM0NqNER6Nkg5Zi9nYUpsOGxHalRQV0xtUTR0SW51WVVrRURaWURxNjlnPT0KLS0tLS1FTkQgUFVCTElDIEtFWS0tLS0tChJJCkcwRQIhAK2wglpUxtdlflvoj2m4q2bc6pZB++E6ryYeGFy9ESeZAiBaNylb+Pl7+sLrNDYZzXXhCKxWhestW52kHMxQa3X/ew=="
+}