~edwargix/tallyard: Upgrade gnark and gurvy (now gnark-crypto)

8 files changed, 110 insertions(+), 390 deletions(-)

M election/msg.go
M election/voter.go
M go.mod
M go.sum
M math/lagrange.go
M math/lagrange_test.go
M math/poly.go
M math/zk.go

M election/msg.go => election/msg.go +8 -8

@@ 7,11 7,11 @@ import (
 	"reflect"
 	"time"
 
+	"github.com/consensys/gnark-crypto/ecc"
+	"github.com/consensys/gnark-crypto/ecc/bls12-381/fr"
+	"github.com/consensys/gnark-crypto/ecc/bls12-381/fr/mimc"
 	"github.com/consensys/gnark/backend/groth16"
-	"github.com/consensys/gnark/crypto/hash/mimc/bls381"
 	"github.com/consensys/gnark/frontend"
-	"github.com/consensys/gurvy"
-	"github.com/consensys/gurvy/bls381/fr"
 	log "github.com/sirupsen/logrus"
 	"golang.org/x/crypto/nacl/box"
 	"golang.org/x/mod/semver"


@@ 451,7 451,7 @@ func (elections *ElectionsMap) onKeysMessage(evt *event.Event, client *mautrix.C
 			errorf("couldn't write to eval bytes buffer: %s")
 			return
 		}
-		evalProvingKey = groth16.NewProvingKey(gurvy.BLS381)
+		evalProvingKey = groth16.NewProvingKey(ecc.BLS12_381)
 		_, err = evalProvingKey.ReadFrom(&buf)
 		if err != nil {
 			log.Errorf("couldn't read eval key from downloaded eval proving keys file: %s", err)


@@ 474,7 474,7 @@ func (elections *ElectionsMap) onKeysMessage(evt *event.Event, client *mautrix.C
 			errorf("couldn't write to sum bytes buffer: %s")
 			return
 		}
-		sumProvingKey = groth16.NewProvingKey(gurvy.BLS381)
+		sumProvingKey = groth16.NewProvingKey(ecc.BLS12_381)
 		_, err = sumProvingKey.ReadFrom(&buf)
 		if err != nil {
 			log.Errorf("couldn't read sum key from downloaded sum keys file: %s", err)


@@ 633,7 633,7 @@ func (elections *ElectionsMap) onEvalsMessage(evt *event.Event) (success bool) {
 			warnf("couldn't decrypt eval proof for us")
 			return
 		}
-		proof = groth16.NewProof(gurvy.BLS381)
+		proof = groth16.NewProof(ecc.BLS12_381)
 		_, err = proof.ReadFrom(bytes.NewBuffer(decryptedProofBytes))
 		if err != nil {
 			errorf("couldn't read proof from bytes buffer: %s", err)


@@ 694,7 694,7 @@ func (elections *ElectionsMap) onEvalsMessage(evt *event.Event) (success bool) {
 	// ensure our output hashes to the given hash
 	{
 		outputBytes := output.Bytes()
-		outputHash, err := bls381.Sum(el.LocalVoter.HashSeed, outputBytes[:])
+		outputHash, err := mimc.Sum(el.LocalVoter.HashSeed, outputBytes[:])
 		if err != nil {
 			errorf("couldn't hash output: %s", err)
 			return


@@ 821,7 821,7 @@ func (elections *ElectionsMap) onSumMessage(evt *event.Event) (success bool) {
 			errorf("couldn't write decrypted sum proof to buffer: %s", err)
 			return
 		}
-		proof = groth16.NewProof(gurvy.BLS381)
+		proof = groth16.NewProof(ecc.BLS12_381)
 		_, err = proof.ReadFrom(&buf)
 		if err != nil {
 			errorf("couldn't read decrypted sum proof from buffer: %s", err)

M election/voter.go => election/voter.go +9 -9

@@ 8,12 8,12 @@ import (
 	"fmt"
 	"io"
 
+	"github.com/consensys/gnark-crypto/ecc"
+	"github.com/consensys/gnark-crypto/ecc/bls12-381/fr"
+	"github.com/consensys/gnark-crypto/ecc/bls12-381/fr/mimc"
+	"github.com/consensys/gnark/backend"
 	"github.com/consensys/gnark/backend/groth16"
-	"github.com/consensys/gnark/backend/r1cs"
-	"github.com/consensys/gnark/crypto/hash/mimc/bls381"
 	"github.com/consensys/gnark/frontend"
-	"github.com/consensys/gurvy"
-	"github.com/consensys/gurvy/bls381/fr"
 	"golang.org/x/crypto/nacl/box"
 	"maunium.net/go/mautrix"
 	"maunium.net/go/mautrix/event"


@@ 177,7 177,7 @@ func (el *Election) SendProvingKeys(client *mautrix.Client, eventStore *EventSto
 		evalCircuit.Coeffs = make([]frontend.Variable, len(*el.FinalJoinIDs)-1)
 		evalCircuit.BallotBits = make([]frontend.Variable, len(el.Candidates)*len(el.Candidates))
 		evalCircuit.HashSeed = el.LocalVoter.HashSeed
-		r1cs, err := frontend.Compile(gurvy.BLS381, &evalCircuit)
+		r1cs, err := frontend.Compile(ecc.BLS12_381, backend.GROTH16, &evalCircuit)
 		if err != nil {
 			return fmt.Errorf("couldn't compile eval circuit: %s", err)
 		}


@@ 228,7 228,7 @@ func (el *Election) SendProvingKeys(client *mautrix.Client, eventStore *EventSto
 		sumCircuit.OutputHashes = make([]frontend.Variable, numVoters)
 		sumCircuit.Outputs = make([]frontend.Variable, numVoters)
 
-		r1cs, err := frontend.Compile(gurvy.BLS381, &sumCircuit)
+		r1cs, err := frontend.Compile(ecc.BLS12_381, backend.GROTH16, &sumCircuit)
 		if err != nil {
 			return fmt.Errorf("couldn't compile sum circuit: %s", err)
 		}


@@ 314,7 314,7 @@ func (el *Election) SendEvals(client *mautrix.Client, eventStore *EventStore) er
 		}
 
 		// hash output
-		outputHash, err := bls381.Sum(voter.HashSeed, outputBytes[:])
+		outputHash, err := mimc.Sum(voter.HashSeed, outputBytes[:])
 		if err != nil {
 			el.RUnlock()
 			return fmt.Errorf("couldn't hash output: %s", err)


@@ 395,7 395,7 @@ func (el *Election) SendSum(client *mautrix.Client, eventStore *EventStore) erro
 		hashSeeds[i] = voter.HashSeed
 	}
 
-	var r1cs r1cs.R1CS
+	var r1cs frontend.CompiledConstraintSystem
 	{
 		var circuit math.SumCircuit
 		circuit.HashSeeds = hashSeeds


@@ 403,7 403,7 @@ func (el *Election) SendSum(client *mautrix.Client, eventStore *EventStore) erro
 		circuit.OutputHashes = make([]frontend.Variable, numVoters)
 		circuit.Outputs = make([]frontend.Variable, numVoters)
 		var err error
-		r1cs, err = frontend.Compile(gurvy.BLS381, &circuit)
+		r1cs, err = frontend.Compile(ecc.BLS12_381, backend.GROTH16, &circuit)
 		if err != nil {
 			el.RUnlock()
 			return fmt.Errorf("couldn't compile sum circuit: %s", err)

M go.mod => go.mod +4 -6

@@ 4,18 4,16 @@ go 1.13
 
 require (
 	github.com/cbergoon/merkletree v0.2.0
-	github.com/consensys/gnark v0.3.8
-	github.com/consensys/gurvy v0.3.8
+	github.com/consensys/gnark v0.4.0
+	github.com/consensys/gnark-crypto v0.4.1-0.20210428083642-6bd055b79906
 	github.com/gdamore/tcell/v2 v2.1.0
 	github.com/kyoh86/xdg v1.2.0
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/magefile/mage v1.11.0 // indirect
 	github.com/rivo/tview v0.0.0-20210217110421-8a8f78a6dd01
 	github.com/sirupsen/logrus v1.8.0
-	golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83
-	golang.org/x/mod v0.4.1
-	golang.org/x/sys v0.0.0-20210218155724-8ebf48af031b // indirect
+	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2
+	golang.org/x/mod v0.4.2
 	golang.org/x/term v0.0.0-20201210144234-2321bbc49cbf // indirect
-	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	maunium.net/go/mautrix v0.8.3
 )

M go.sum => go.sum +75 -353

@@ 1,48 1,6 @@
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-cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
-cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
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@@ 55,157 13,68 @@ github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtE
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+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
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 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
-gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=
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 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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-gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
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 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
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+honnef.co/go/tools v0.1.3/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
 maunium.net/go/maulogger/v2 v2.2.2/go.mod h1:TYWy7wKwz/tIXTpsx8G3mZseIRiC5DoMxSZazOHy68A=
 maunium.net/go/mautrix v0.8.3 h1:nKGdARVCf2w7thEN5GEbAjYrlLjKLX44jOdB1h+BV7U=
 maunium.net/go/mautrix v0.8.3/go.mod h1:LPbb/DeAmtOPKnGbJazL9g11cO3mMAaEbLE8udd98BU=
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M math/lagrange.go => math/lagrange.go +1 -1

@@ 1,6 1,6 @@
 package math
 
-import "github.com/consensys/gurvy/bls381/fr"
+import "github.com/consensys/gnark-crypto/ecc/bls12-381/fr"
 
 // p[0] is x coordinate, p[1] is y coordinate
 type Point [2]*fr.Element

M math/lagrange_test.go => math/lagrange_test.go +1 -1

@@ 3,7 3,7 @@ package math
 import (
 	"testing"
 
-	"github.com/consensys/gurvy/bls381/fr"
+	"github.com/consensys/gnark-crypto/ecc/bls12-381/fr"
 )
 
 func TestWikipedia(t *testing.T) {

M math/poly.go => math/poly.go +7 -7

@@ 3,12 3,12 @@ package math
 import (
 	"fmt"
 
+	"github.com/consensys/gnark-crypto/ecc"
+	"github.com/consensys/gnark-crypto/ecc/bls12-381/fr"
+	"github.com/consensys/gnark-crypto/ecc/bls12-381/fr/mimc"
+	"github.com/consensys/gnark/backend"
 	"github.com/consensys/gnark/backend/groth16"
-	"github.com/consensys/gnark/backend/r1cs"
-	"github.com/consensys/gnark/crypto/hash/mimc/bls381"
 	"github.com/consensys/gnark/frontend"
-	"github.com/consensys/gurvy"
-	"github.com/consensys/gurvy/bls381/fr"
 )
 
 type Poly struct {


@@ 96,14 96,14 @@ func (p *Poly) EvalAndProve(input *fr.Element, provingKey groth16.ProvingKey, ha
 	}
 
 	// compile R1CS
-	var r1cs r1cs.R1CS
+	var r1cs frontend.CompiledConstraintSystem
 	{
 		var circuit EvalCircuit
 		circuit.Coeffs = make([]frontend.Variable, len(p.Coeffs))
 		circuit.BallotBits = make([]frontend.Variable, len(p.Ballot)*len(p.Ballot[0]))
 		circuit.HashSeed = hashSeed
 		var err error
-		r1cs, err = frontend.Compile(gurvy.BLS381, &circuit)
+		r1cs, err = frontend.Compile(ecc.BLS12_381, backend.GROTH16, &circuit)
 		if err != nil {
 			panic(err)
 		}


@@ 120,7 120,7 @@ func (p *Poly) EvalAndProve(input *fr.Element, provingKey groth16.ProvingKey, ha
 	{
 		poutputBytes := p.cache.poutput.Bytes()
 		var err error
-		poutputHash, err = bls381.Sum(hashSeed, poutputBytes[:])
+		poutputHash, err = mimc.Sum(hashSeed, poutputBytes[:])
 		if err != nil {
 			panic(err)
 		}

M math/zk.go => math/zk.go +5 -5

@@ 3,9 3,9 @@ package math
 import (
 	"errors"
 
+	"github.com/consensys/gnark-crypto/ecc"
 	"github.com/consensys/gnark/frontend"
 	"github.com/consensys/gnark/std/hash/mimc"
-	"github.com/consensys/gurvy"
 )
 
 type EvalCircuit struct {


@@ 25,7 25,7 @@ type EvalCircuit struct {
 	POutput    frontend.Variable   `gnark:",private"`
 }
 
-func (circuit *EvalCircuit) Define(curveID gurvy.ID, cs *frontend.ConstraintSystem) error {
+func (circuit *EvalCircuit) Define(curveID ecc.ID, cs *frontend.ConstraintSystem) error {
 	// prove the input yields the given output
 	output := circuit.Constant
 	poutput := circuit.Constant


@@ 58,7 58,7 @@ func (circuit *EvalCircuit) Define(curveID gurvy.ID, cs *frontend.ConstraintSyst
 	}
 	cs.AssertIsEqual(constructedConstant, circuit.Constant)
 
-	mimc, err := mimc.NewMiMC(circuit.HashSeed, gurvy.BLS381)
+	mimc, err := mimc.NewMiMC(circuit.HashSeed, ecc.BLS12_381)
 	if err != nil {
 		return err
 	}


@@ 77,7 77,7 @@ type SumCircuit struct {
 	Outputs      []frontend.Variable `gnark:",private"`
 }
 
-func (circuit *SumCircuit) Define(curveID gurvy.ID, cs *frontend.ConstraintSystem) error {
+func (circuit *SumCircuit) Define(curveID ecc.ID, cs *frontend.ConstraintSystem) error {
 	if len(circuit.HashSeeds) != len(circuit.HashSelects) {
 		return errors.New("len(circuit.HashSeeds) != len(circuit.HashSelects)")
 	}


@@ 92,7 92,7 @@ func (circuit *SumCircuit) Define(curveID gurvy.ID, cs *frontend.ConstraintSyste
 	zero := cs.Constant(0)
 	// TODO: this seems verify inefficient
 	for i, hashSeed := range circuit.HashSeeds {
-		mimc, err := mimc.NewMiMC(hashSeed, gurvy.BLS381)
+		mimc, err := mimc.NewMiMC(hashSeed, ecc.BLS12_381)
 		if err != nil {
 			return err
 		}