mirror of https://github.com/status-im/op-geth.git
139 lines
3.6 KiB
Go
139 lines
3.6 KiB
Go
// Copyright 2018 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
// +build gofuzz
|
|
|
|
package bn256
|
|
|
|
import (
|
|
"bytes"
|
|
"math/big"
|
|
|
|
cloudflare "github.com/ethereum/go-ethereum/crypto/bn256/cloudflare"
|
|
google "github.com/ethereum/go-ethereum/crypto/bn256/google"
|
|
)
|
|
|
|
// FuzzAdd fuzzez bn256 addition between the Google and Cloudflare libraries.
|
|
func FuzzAdd(data []byte) int {
|
|
// Ensure we have enough data in the first place
|
|
if len(data) != 128 {
|
|
return 0
|
|
}
|
|
// Ensure both libs can parse the first curve point
|
|
xc := new(cloudflare.G1)
|
|
_, errc := xc.Unmarshal(data[:64])
|
|
|
|
xg := new(google.G1)
|
|
_, errg := xg.Unmarshal(data[:64])
|
|
|
|
if (errc == nil) != (errg == nil) {
|
|
panic("parse mismatch")
|
|
} else if errc != nil {
|
|
return 0
|
|
}
|
|
// Ensure both libs can parse the second curve point
|
|
yc := new(cloudflare.G1)
|
|
_, errc = yc.Unmarshal(data[64:])
|
|
|
|
yg := new(google.G1)
|
|
_, errg = yg.Unmarshal(data[64:])
|
|
|
|
if (errc == nil) != (errg == nil) {
|
|
panic("parse mismatch")
|
|
} else if errc != nil {
|
|
return 0
|
|
}
|
|
// Add the two points and ensure they result in the same output
|
|
rc := new(cloudflare.G1)
|
|
rc.Add(xc, yc)
|
|
|
|
rg := new(google.G1)
|
|
rg.Add(xg, yg)
|
|
|
|
if !bytes.Equal(rc.Marshal(), rg.Marshal()) {
|
|
panic("add mismatch")
|
|
}
|
|
return 0
|
|
}
|
|
|
|
// FuzzMul fuzzez bn256 scalar multiplication between the Google and Cloudflare
|
|
// libraries.
|
|
func FuzzMul(data []byte) int {
|
|
// Ensure we have enough data in the first place
|
|
if len(data) != 96 {
|
|
return 0
|
|
}
|
|
// Ensure both libs can parse the curve point
|
|
pc := new(cloudflare.G1)
|
|
_, errc := pc.Unmarshal(data[:64])
|
|
|
|
pg := new(google.G1)
|
|
_, errg := pg.Unmarshal(data[:64])
|
|
|
|
if (errc == nil) != (errg == nil) {
|
|
panic("parse mismatch")
|
|
} else if errc != nil {
|
|
return 0
|
|
}
|
|
// Add the two points and ensure they result in the same output
|
|
rc := new(cloudflare.G1)
|
|
rc.ScalarMult(pc, new(big.Int).SetBytes(data[64:]))
|
|
|
|
rg := new(google.G1)
|
|
rg.ScalarMult(pg, new(big.Int).SetBytes(data[64:]))
|
|
|
|
if !bytes.Equal(rc.Marshal(), rg.Marshal()) {
|
|
panic("scalar mul mismatch")
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func FuzzPair(data []byte) int {
|
|
// Ensure we have enough data in the first place
|
|
if len(data) != 192 {
|
|
return 0
|
|
}
|
|
// Ensure both libs can parse the curve point
|
|
pc := new(cloudflare.G1)
|
|
_, errc := pc.Unmarshal(data[:64])
|
|
|
|
pg := new(google.G1)
|
|
_, errg := pg.Unmarshal(data[:64])
|
|
|
|
if (errc == nil) != (errg == nil) {
|
|
panic("parse mismatch")
|
|
} else if errc != nil {
|
|
return 0
|
|
}
|
|
// Ensure both libs can parse the twist point
|
|
tc := new(cloudflare.G2)
|
|
_, errc = tc.Unmarshal(data[64:])
|
|
|
|
tg := new(google.G2)
|
|
_, errg = tg.Unmarshal(data[64:])
|
|
|
|
if (errc == nil) != (errg == nil) {
|
|
panic("parse mismatch")
|
|
} else if errc != nil {
|
|
return 0
|
|
}
|
|
// Pair the two points and ensure thet result in the same output
|
|
if cloudflare.PairingCheck([]*cloudflare.G1{pc}, []*cloudflare.G2{tc}) != google.PairingCheck([]*google.G1{pg}, []*google.G2{tg}) {
|
|
panic("pair mismatch")
|
|
}
|
|
return 0
|
|
}
|