2391fbc676
This PR moves our fuzzers from tests/fuzzers into whatever their respective 'native' package is. The historical reason why they were placed in an external location, is that when they were based on go-fuzz, they could not be "hidden" via the _test.go prefix. So in order to shove them away from the go-ethereum "production code", they were put aside. But now we've rewritten them to be based on golang testing, and thus can be brought back. I've left (in tests/) the ones that are not production (bls128381), require non-standard imports (secp requires btcec, bn256 requires gnark/google/cloudflare deps). This PR also adds a fuzzer for precompiled contracts, because why not. This PR utilizes a newly rewritten replacement for go-118-fuzz-build, namely gofuzz-shim, which utilises the inputs from the fuzzing engine better.
54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
// Copyright 2021 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package secp256k1
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import (
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"fmt"
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"testing"
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"github.com/btcsuite/btcd/btcec/v2"
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"github.com/ethereum/go-ethereum/crypto/secp256k1"
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)
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func TestFuzzer(t *testing.T) {
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a, b := "00000000N0000000/R0000000000000000", "0U0000S0000000mkhP000000000000000U"
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fuzz([]byte(a), []byte(b))
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}
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func Fuzz(f *testing.F) {
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f.Fuzz(func(t *testing.T, a, b []byte) {
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fuzz(a, b)
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})
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}
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func fuzz(dataP1, dataP2 []byte) {
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var (
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curveA = secp256k1.S256()
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curveB = btcec.S256()
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)
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// first point
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x1, y1 := curveB.ScalarBaseMult(dataP1)
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// second points
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x2, y2 := curveB.ScalarBaseMult(dataP2)
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resAX, resAY := curveA.Add(x1, y1, x2, y2)
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resBX, resBY := curveB.Add(x1, y1, x2, y2)
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if resAX.Cmp(resBX) != 0 || resAY.Cmp(resBY) != 0 {
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fmt.Printf("%s %s %s %s\n", x1, y1, x2, y2)
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panic(fmt.Sprintf("Addition failed: geth: %s %s btcd: %s %s", resAX, resAY, resBX, resBY))
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}
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}
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