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tests/fuzzers: crypto/bn256 and crypto/bls12381 tests against gnark-crypto (#22755)

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Add more cross-fuzzers to fuzz bls with gnark versus geth's own bls12-381 library
This commit is contained in:
Gautam Botrel
2021-04-28 05:04:25 -05:00
committed by GitHub
parent 256c5d68b2
commit 9e5bb84c0e
6 changed files with 306 additions and 159 deletions
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48
tests/fuzzers/bn256/bn256_fuzz.go
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@ -12,12 +12,12 @@ import (
"io"
"math/big"
gurvy "github.com/consensys/gurvy/bn256"
"github.com/consensys/gnark-crypto/ecc/bn254"
cloudflare "github.com/ethereum/go-ethereum/crypto/bn256/cloudflare"
google "github.com/ethereum/go-ethereum/crypto/bn256/google"
)
func getG1Points(input io.Reader) (*cloudflare.G1, *google.G1, *gurvy.G1Affine) {
func getG1Points(input io.Reader) (*cloudflare.G1, *google.G1, *bn254.G1Affine) {
_, xc, err := cloudflare.RandomG1(input)
if err != nil {
// insufficient input
@ -25,16 +25,16 @@ func getG1Points(input io.Reader) (*cloudflare.G1, *google.G1, *gurvy.G1Affine)
}
xg := new(google.G1)
if _, err := xg.Unmarshal(xc.Marshal()); err != nil {
panic(fmt.Sprintf("Could not marshal cloudflare -> google:", err))
panic(fmt.Sprintf("Could not marshal cloudflare -> google: %v", err))
}
xs := new(gurvy.G1Affine)
xs := new(bn254.G1Affine)
if err := xs.Unmarshal(xc.Marshal()); err != nil {
panic(fmt.Sprintf("Could not marshal cloudflare -> consensys:", err))
panic(fmt.Sprintf("Could not marshal cloudflare -> gnark: %v", err))
}
return xc, xg, xs
}
func getG2Points(input io.Reader) (*cloudflare.G2, *google.G2, *gurvy.G2Affine) {
func getG2Points(input io.Reader) (*cloudflare.G2, *google.G2, *bn254.G2Affine) {
_, xc, err := cloudflare.RandomG2(input)
if err != nil {
// insufficient input
@ -42,11 +42,11 @@ func getG2Points(input io.Reader) (*cloudflare.G2, *google.G2, *gurvy.G2Affine)
}
xg := new(google.G2)
if _, err := xg.Unmarshal(xc.Marshal()); err != nil {
panic(fmt.Sprintf("Could not marshal cloudflare -> google:", err))
panic(fmt.Sprintf("Could not marshal cloudflare -> google: %v", err))
}
xs := new(gurvy.G2Affine)
xs := new(bn254.G2Affine)
if err := xs.Unmarshal(xc.Marshal()); err != nil {
panic(fmt.Sprintf("Could not marshal cloudflare -> consensys:", err))
panic(fmt.Sprintf("Could not marshal cloudflare -> gnark: %v", err))
}
return xc, xg, xs
}
@ -70,16 +70,16 @@ func FuzzAdd(data []byte) int {
rg := new(google.G1)
rg.Add(xg, yg)
tmpX := new(gurvy.G1Jac).FromAffine(xs)
tmpY := new(gurvy.G1Jac).FromAffine(ys)
rs := new(gurvy.G1Affine).FromJacobian(tmpX.AddAssign(tmpY))
tmpX := new(bn254.G1Jac).FromAffine(xs)
tmpY := new(bn254.G1Jac).FromAffine(ys)
rs := new(bn254.G1Affine).FromJacobian(tmpX.AddAssign(tmpY))
if !bytes.Equal(rc.Marshal(), rg.Marshal()) {
panic("add mismatch: cloudflare/google")
}
if !bytes.Equal(rc.Marshal(), rs.Marshal()) {
panic("add mismatch: cloudflare/consensys")
panic("add mismatch: cloudflare/gnark")
}
return 1
}
@ -112,16 +112,16 @@ func FuzzMul(data []byte) int {
rg := new(google.G1)
rg.ScalarMult(pg, new(big.Int).SetBytes(buf))
rs := new(gurvy.G1Jac)
psJac := new(gurvy.G1Jac).FromAffine(ps)
rs := new(bn254.G1Jac)
psJac := new(bn254.G1Jac).FromAffine(ps)
rs.ScalarMultiplication(psJac, new(big.Int).SetBytes(buf))
rsAffine := new(gurvy.G1Affine).FromJacobian(rs)
rsAffine := new(bn254.G1Affine).FromJacobian(rs)
if !bytes.Equal(rc.Marshal(), rg.Marshal()) {
panic("scalar mul mismatch: cloudflare/google")
}
if !bytes.Equal(rc.Marshal(), rsAffine.Marshal()) {
panic("scalar mul mismatch: cloudflare/consensys")
panic("scalar mul mismatch: cloudflare/gnark")
}
return 1
}
@ -136,18 +136,20 @@ func FuzzPair(data []byte) int {
if tc == nil {
return 0
}
// Pair the two points and ensure they result in the same output
clPair := cloudflare.PairingCheck([]*cloudflare.G1{pc}, []*cloudflare.G2{tc})
if clPair != google.PairingCheck([]*google.G1{pg}, []*google.G2{tg}) {
clPair := cloudflare.Pair(pc, tc).Marshal()
gPair := google.Pair(pg, tg).Marshal()
if !bytes.Equal(clPair, gPair) {
panic("pairing mismatch: cloudflare/google")
}
coPair, err := gurvy.PairingCheck([]gurvy.G1Affine{*ps}, []gurvy.G2Affine{*ts})
cPair, err := bn254.Pair([]bn254.G1Affine{*ps}, []bn254.G2Affine{*ts})
if err != nil {
panic(fmt.Sprintf("gurvy encountered error: %v", err))
panic(fmt.Sprintf("gnark/bn254 encountered error: %v", err))
}
if clPair != coPair {
panic("pairing mismatch: cloudflare/consensys")
if !bytes.Equal(clPair, cPair.Marshal()) {
panic("pairing mismatch: cloudflare/gnark")
}
return 1