feat: Caelum (#111)

* bls signature for basic account * benchmark for bls and ed25519 * added bls sig verify cost to genesis * Revert "Merge branch 'fetchai:master' into bls" This reverts commit a5dd8ea, reversing changes made to 082e071. * format using go tools * nuisance golangci-lint errors * Bls (#104) * bls signature for basic account * benchmark for bls and ed25519 * added bls sig verify cost to genesis * Revert "Merge branch 'fetchai:master' into bls" This reverts commit a5dd8ea, reversing changes made to 082e071. * format using go tools * nuisance golangci-lint errors * POP interfaces in accounts and authentication * add bls multsig operations * fixed golangci-lint error * changes after comments * initial commit from regen-ledger/x/group v1.0.0 * minor changes to bls12381 key generation * initial commit from regen-ledger/proto/regen/group v1.0.0 * group module compatibility for fetchai cosomos-sdk * add bls account restriction to group members * fix bug in setting pop * make msg uniqueness checking optional * add bls basic/aggregate vote * add checking on empty messages/public keys * add gas caclulation/consumption for verifying aggregated votes * minor change to gas calculation for voteagg * initial commit for orm and types from regen-ledger v2.0.0-beta1 * upgrade testsuite to regen-ledger v2.0.0-beta1 * make bls requirement for group members optional * add tests for bls related group operations * client and server for poll and aggregated votes and integration tests * fix bls related test errors * fix proto-lint errors * goimport format * proto comments * update blst to v0.3.5 and more tests for bls * Update x/auth/ante/sigverify.go Co-authored-by: daeMOn <[email protected]> * Update x/group/client/util.go Co-authored-by: daeMOn <[email protected]> Co-authored-by: daeMOn <[email protected]>
fetchai · Nov 12, 2021 · 686a03c · 686a03c
1 parent 2111ea7
commit 686a03c
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Showing 9 changed files with 243 additions and 28 deletions.
diff --git a/crypto/keys/bls12381/bls12381.go b/crypto/keys/bls12381/bls12381.go
@@ -122,7 +122,7 @@ func genPrivKey(rand io.Reader) []byte {
 
 	sk := blst.KeyGen(ikm[:])
 	if sk == nil {
-		panic("Failed to generate secret key!")
+		panic("failed to generate secret key!")
 	}
 
 	skBytes := sk.Serialize()
@@ -136,7 +136,12 @@ func genPrivKey(rand io.Reader) []byte {
 // if it's derived from user input.
 func GenPrivKeyFromSecret(secret []byte) *PrivKey {
 	ikm := crypto.Sha256(secret) // Not Ripemd160 because we want 32 bytes.
-	skBytes := blst.KeyGen(ikm).Serialize()
+
+	sk := blst.KeyGen(ikm)
+	if sk == nil {
+		panic("failed to generate secret key from ikm")
+	}
+	skBytes := sk.Serialize()
 
 	return &PrivKey{Key: skBytes}
 }

diff --git a/crypto/keys/bls12381/bls12381_test.go b/crypto/keys/bls12381/bls12381_test.go
@@ -1,12 +1,20 @@
 package bls12381_test
 
 import (
+	"encoding/base64"
+	"testing"
+
+	"github.com/cosmos/cosmos-sdk/codec/types"
+	cryptocodec "github.com/cosmos/cosmos-sdk/crypto/codec"
+
+	"github.com/cosmos/cosmos-sdk/codec"
 	"github.com/cosmos/cosmos-sdk/crypto/keys/bls12381"
 	bench "github.com/cosmos/cosmos-sdk/crypto/keys/internal/benchmarking"
+	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"github.com/tendermint/tendermint/crypto"
-	"testing"
 )
 
 func TestSignAndValidateBls12381(t *testing.T) {
@@ -22,6 +30,166 @@ func TestSignAndValidateBls12381(t *testing.T) {
 
 }
 
+func TestKeyFromSecret(t *testing.T) {
+	insecureSeed := []byte("a random number for testing")
+	privKey := bls12381.GenPrivKeyFromSecret(insecureSeed)
+	pubKey := privKey.PubKey()
+
+	msg := []byte("hello")
+	sig, err := privKey.Sign(msg)
+	require.Nil(t, err)
+	assert.True(t, pubKey.VerifySignature(msg, sig))
+}
+
+func TestPubKeyEquals(t *testing.T) {
+	bls12381PubKey := bls12381.GenPrivKey().PubKey().(*bls12381.PubKey)
+
+	testCases := []struct {
+		msg      string
+		pubKey   cryptotypes.PubKey
+		other    cryptotypes.PubKey
+		expectEq bool
+	}{
+		{
+			"different bytes",
+			bls12381PubKey,
+			bls12381.GenPrivKey().PubKey(),
+			false,
+		},
+		{
+			"equals",
+			bls12381PubKey,
+			&bls12381.PubKey{
+				Key: bls12381PubKey.Key,
+			},
+			true,
+		},
+		{
+			"different types",
+			bls12381PubKey,
+			secp256k1.GenPrivKey().PubKey(),
+			false,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.msg, func(t *testing.T) {
+			eq := tc.pubKey.Equals(tc.other)
+			require.Equal(t, eq, tc.expectEq)
+		})
+	}
+}
+
+func TestPrivKeyEquals(t *testing.T) {
+	bls12381PrivKey := bls12381.GenPrivKey()
+
+	testCases := []struct {
+		msg      string
+		privKey  cryptotypes.PrivKey
+		other    cryptotypes.PrivKey
+		expectEq bool
+	}{
+		{
+			"different bytes",
+			bls12381PrivKey,
+			bls12381.GenPrivKey(),
+			false,
+		},
+		{
+			"equals",
+			bls12381PrivKey,
+			&bls12381.PrivKey{
+				Key: bls12381PrivKey.Key,
+			},
+			true,
+		},
+		{
+			"different types",
+			bls12381PrivKey,
+			secp256k1.GenPrivKey(),
+			false,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.msg, func(t *testing.T) {
+			eq := tc.privKey.Equals(tc.other)
+			require.Equal(t, eq, tc.expectEq)
+		})
+	}
+}
+
+func TestMarshalAmino(t *testing.T) {
+	aminoCdc := codec.NewLegacyAmino()
+	privKey := bls12381.GenPrivKey()
+	pubKey := privKey.PubKey().(*bls12381.PubKey)
+
+	testCases := []struct {
+		desc      string
+		msg       codec.AminoMarshaler
+		typ       interface{}
+		expBinary []byte
+		expJSON   string
+	}{
+		{
+			"bls12381 private key",
+			privKey,
+			&bls12381.PrivKey{},
+			append([]byte{32}, privKey.Bytes()...), // Length-prefixed.
+			"\"" + base64.StdEncoding.EncodeToString(privKey.Bytes()) + "\"",
+		},
+		{
+			"bls12381 public key",
+			pubKey,
+			&bls12381.PubKey{},
+			append([]byte{96}, pubKey.Bytes()...), // Length-prefixed.
+			"\"" + base64.StdEncoding.EncodeToString(pubKey.Bytes()) + "\"",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.desc, func(t *testing.T) {
+			// Do a round trip of encoding/decoding binary.
+			bz, err := aminoCdc.Marshal(tc.msg)
+			require.NoError(t, err)
+			require.Equal(t, tc.expBinary, bz)
+
+			err = aminoCdc.Unmarshal(bz, tc.typ)
+			require.NoError(t, err)
+
+			require.Equal(t, tc.msg, tc.typ)
+
+			// Do a round trip of encoding/decoding JSON.
+			bz, err = aminoCdc.MarshalJSON(tc.msg)
+			require.NoError(t, err)
+			require.Equal(t, tc.expJSON, string(bz))
+
+			err = aminoCdc.UnmarshalJSON(bz, tc.typ)
+			require.NoError(t, err)
+
+			require.Equal(t, tc.msg, tc.typ)
+		})
+	}
+}
+
+func TestMarshalJSON(t *testing.T) {
+	require := require.New(t)
+	privKey := bls12381.GenPrivKey()
+	pk := privKey.PubKey()
+
+	registry := types.NewInterfaceRegistry()
+	cryptocodec.RegisterInterfaces(registry)
+	cdc := codec.NewProtoCodec(registry)
+
+	bz, err := cdc.MarshalInterfaceJSON(pk)
+	require.NoError(err)
+
+	var pk2 cryptotypes.PubKey
+	err = cdc.UnmarshalInterfaceJSON(bz, &pk2)
+	require.NoError(err)
+	require.True(pk2.Equals(pk))
+}
+
 func BenchmarkSignBls(b *testing.B) {
 	privKey := bls12381.GenPrivKey()
 

diff --git a/crypto/keys/bls12381/multisig.go b/crypto/keys/bls12381/multisig.go
@@ -47,7 +47,7 @@ func AggregateSignature(sigs [][]byte) ([]byte, error) {
 
 // VerifyMultiSignature assumes public key is already validated
 func VerifyMultiSignature(msg []byte, sig []byte, pks []*PubKey) error {
-	return VerifyAggregateSignature([][]byte{msg}, sig, [][]*PubKey{pks})
+	return VerifyAggregateSignature([][]byte{msg}, false, sig, [][]*PubKey{pks})
 }
 
 func Unique(msgs [][]byte) bool {
@@ -65,18 +65,32 @@ func Unique(msgs [][]byte) bool {
 	return true
 }
 
-func VerifyAggregateSignature(msgs [][]byte, sig []byte, pkss [][]*PubKey) error {
+func VerifyAggregateSignature(msgs [][]byte, msgCheck bool, sig []byte, pkss [][]*PubKey) error {
 	n := len(msgs)
 	if n == 0 {
 		return fmt.Errorf("messages cannot be empty")
 	}
 
+	for i, msg := range msgs {
+		if len(msg) == 0 {
+			return fmt.Errorf("%d-th message is empty", i)
+		}
+	}
+
 	if len(pkss) != n {
 		return fmt.Errorf("the number of messages and public key sets must match")
 	}
 
-	if !Unique(msgs) {
-		return fmt.Errorf("messages must be pairwise distinct")
+	for i, pks := range pkss {
+		if len(pks) == 0 {
+			return fmt.Errorf("%d-th public key set is empty", i)
+		}
+	}
+
+	if msgCheck {
+		if !Unique(msgs) {
+			return fmt.Errorf("messages must be pairwise distinct")
+		}
 	}
 
 	apks := make([]*blst.P1Affine, len(pkss))

diff --git a/crypto/keys/bls12381/multisig_test.go b/crypto/keys/bls12381/multisig_test.go
@@ -55,8 +55,7 @@ func TestBlsAggSig(t *testing.T) {
 	aggSig, err := bls.AggregateSignature(sigs)
 	require.Nil(t, err)
 
-	assert.Nil(t, bls.VerifyAggregateSignature(msgs, aggSig, pks))
-
+	assert.Nil(t, bls.VerifyAggregateSignature(msgs, true, aggSig, pks))
 }
 
 func benchmarkBlsVerifyMulti(total int, b *testing.B) {
@@ -113,7 +112,7 @@ func benchmarkBlsVerifyAgg(total int, b *testing.B) {
 	b.ResetTimer()
 
 	for i := 0; i < b.N; i++ {
-		bls.VerifyAggregateSignature(msgs, aggSig, pks)
+		bls.VerifyAggregateSignature(msgs, false, aggSig, pks)
 	}
 }
 

diff --git a/go.mod b/go.mod
@@ -7,8 +7,8 @@ require (
 	github.com/DataDog/zstd v1.4.5 // indirect
 	github.com/armon/go-metrics v0.3.8
 	github.com/bgentry/speakeasy v0.1.0
-	github.com/btcsuite/btcd v0.21.0-beta
-	github.com/btcsuite/btcutil v1.0.2
+	github.com/btcsuite/btcd v0.22.0-beta
+	github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce
 	github.com/confio/ics23/go v0.6.6
 	github.com/cosmos/go-bip39 v1.0.0
 	github.com/cosmos/iavl v0.17.1
@@ -27,6 +27,7 @@ require (
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0
 	github.com/hashicorp/golang-lru v0.5.4
+	github.com/lib/pq v1.10.2 // indirect
 	github.com/magiconair/properties v1.8.5
 	github.com/mattn/go-isatty v0.0.12
 	github.com/mitchellh/mapstructure v1.3.3 // indirect
@@ -45,14 +46,14 @@ require (
 	github.com/spf13/pflag v1.0.5
 	github.com/spf13/viper v1.7.1
 	github.com/stretchr/testify v1.7.0
-	github.com/supranational/blst v0.3.4
+	github.com/supranational/blst v0.3.5
 	github.com/tendermint/btcd v0.1.1
 	github.com/tendermint/crypto v0.0.0-20191022145703-50d29ede1e15
 	github.com/tendermint/go-amino v0.16.0
 	github.com/tendermint/tendermint v0.34.13
 	github.com/tendermint/tm-db v0.6.4
-	golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad
-	google.golang.org/genproto v0.0.0-20210114201628-6edceaf6022f
+	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5
+	google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c
 	google.golang.org/grpc v1.40.0
 	google.golang.org/protobuf v1.26.0
 	gopkg.in/ini.v1 v1.61.0 // indirect