crypto, tests: update fuzzers to native go fuzzing (ethereum#28352)

crypto/blake2b/blake2b_f_test.go

@@ -1,6 +1,7 @@
 package blake2b
 
 import (
+	"encoding/binary"
 	"fmt"
 	"reflect"
 	"testing"
@@ -57,3 +58,60 @@ var testVectorsF = []testVector{
 		},
 	},
 }
+
+func Fuzz(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		fuzz(data)
+	})
+}
+
+func fuzz(data []byte) {
+	// Make sure the data confirms to the input model
+	if len(data) != 211 {
+		return
+	}
+	// Parse everything and call all the implementations
+	var (
+		rounds = binary.BigEndian.Uint16(data[0:2])
+
+		h [8]uint64
+		m [16]uint64
+		t [2]uint64
+		f uint64
+	)
+
+	for i := 0; i < 8; i++ {
+		offset := 2 + i*8
+		h[i] = binary.LittleEndian.Uint64(data[offset : offset+8])
+	}
+	for i := 0; i < 16; i++ {
+		offset := 66 + i*8
+		m[i] = binary.LittleEndian.Uint64(data[offset : offset+8])
+	}
+	t[0] = binary.LittleEndian.Uint64(data[194:202])
+	t[1] = binary.LittleEndian.Uint64(data[202:210])
+
+	if data[210]%2 == 1 { // Avoid spinning the fuzzer to hit 0/1
+		f = 0xFFFFFFFFFFFFFFFF
+	}
+
+	// Run the blake2b compression on all instruction sets and cross reference
+	want := h
+	fGeneric(&want, &m, t[0], t[1], f, uint64(rounds))
+
+	have := h
+	fSSE4(&have, &m, t[0], t[1], f, uint64(rounds))
+	if have != want {
+		panic("SSE4 mismatches generic algo")
+	}
+	have = h
+	fAVX(&have, &m, t[0], t[1], f, uint64(rounds))
+	if have != want {
+		panic("AVX mismatches generic algo")
+	}
+	have = h
+	fAVX2(&have, &m, t[0], t[1], f, uint64(rounds))
+	if have != want {
+		panic("AVX2 mismatches generic algo")
+	}
+}

tests/fuzzers/bitutil/compress_fuzz.go → tests/fuzzers/bitutil/compress_test.go

@@ -1,4 +1,4 @@
-// Copyright 2017 The go-ethereum Authors
+// Copyright 2023 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
@@ -18,41 +18,51 @@ package bitutil
 
 import (
 	"bytes"
+	"testing"
 
 	"github.com/XinFinOrg/XDPoSChain/common/bitutil"
 )
 
-// Fuzz implements a go-fuzz fuzzer method to test various encoding method
-// invocations.
-func Fuzz(data []byte) int {
-	if len(data) == 0 {
-		return 0
-	}
-	if data[0]%2 == 0 {
-		return fuzzEncode(data[1:])
-	}
-	return fuzzDecode(data[1:])
+func FuzzEncoder(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		fuzzEncode(data)
+	})
+}
+func FuzzDecoder(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		fuzzDecode(data)
+	})
 }
 
 // fuzzEncode implements a go-fuzz fuzzer method to test the bitset encoding and
 // decoding algorithm.
-func fuzzEncode(data []byte) int {
+func fuzzEncode(data []byte) {
 	proc, _ := bitutil.DecompressBytes(bitutil.CompressBytes(data), len(data))
 	if !bytes.Equal(data, proc) {
 		panic("content mismatch")
 	}
-	return 1
 }
 
 // fuzzDecode implements a go-fuzz fuzzer method to test the bit decoding and
 // reencoding algorithm.
-func fuzzDecode(data []byte) int {
+func fuzzDecode(data []byte) {
 	blob, err := bitutil.DecompressBytes(data, 1024)
 	if err != nil {
-		return 0
+		return
+	}
+	// re-compress it (it's OK if the re-compressed differs from the
+	// original - the first input may not have been compressed at all)
+	comp := bitutil.CompressBytes(blob)
+	if len(comp) > len(blob) {
+		// After compression, it must be smaller or equal
+		panic("bad compression")
+	}
+	// But decompressing it once again should work
+	decomp, err := bitutil.DecompressBytes(data, 1024)
+	if err != nil {
+		panic(err)
 	}
-	if comp := bitutil.CompressBytes(blob); !bytes.Equal(comp, data) {
+	if !bytes.Equal(decomp, blob) {
 		panic("content mismatch")
 	}
-	return 1
 }

tests/fuzzers/bn256/bn256_fuzz.go

@@ -61,8 +61,8 @@ func getG2Points(input io.Reader) (*cloudflare.G2, *google.G2, *bn254.G2Affine)
 	return xc, xg, xs
 }
 
-// FuzzAdd fuzzez bn256 addition between the Google and Cloudflare libraries.
-func FuzzAdd(data []byte) int {
+// fuzzAdd fuzzez bn256 addition between the Google and Cloudflare libraries.
+func fuzzAdd(data []byte) int {
 	input := bytes.NewReader(data)
 	xc, xg, xs := getG1Points(input)
 	if xc == nil {
@@ -94,9 +94,9 @@ func FuzzAdd(data []byte) int {
 	return 1
 }
 
-// FuzzMul fuzzez bn256 scalar multiplication between the Google and Cloudflare
+// fuzzMul fuzzez bn256 scalar multiplication between the Google and Cloudflare
 // libraries.
-func FuzzMul(data []byte) int {
+func fuzzMul(data []byte) int {
 	input := bytes.NewReader(data)
 	pc, pg, ps := getG1Points(input)
 	if pc == nil {
@@ -136,7 +136,7 @@ func FuzzMul(data []byte) int {
 	return 1
 }
 
-func FuzzPair(data []byte) int {
+func fuzzPair(data []byte) int {
 	input := bytes.NewReader(data)
 	pc, pg, ps := getG1Points(input)
 	if pc == nil {

tests/fuzzers/rlp/rlp_fuzzer.go

@@ -0,0 +1,143 @@
+// Copyright 2019 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/>.
+
+package rlp
+
+import (
+	"bytes"
+	"fmt"
+	"math/big"
+
+	"github.com/XinFinOrg/XDPoSChain/core/types"
+	"github.com/XinFinOrg/XDPoSChain/rlp"
+	"github.com/holiman/uint256"
+)
+
+func decodeEncode(input []byte, val interface{}, i int) {
+	if err := rlp.DecodeBytes(input, val); err == nil {
+		output, err := rlp.EncodeToBytes(val)
+		if err != nil {
+			panic(err)
+		}
+		if !bytes.Equal(input, output) {
+			panic(fmt.Sprintf("case %d: encode-decode is not equal, \ninput : %x\noutput: %x", i, input, output))
+		}
+	}
+}
+
+func fuzz(input []byte) int {
+	if len(input) == 0 {
+		return 0
+	}
+	if len(input) > 500*1024 {
+		return 0
+	}
+
+	var i int
+	{
+		rlp.Split(input)
+	}
+	{
+		if elems, _, err := rlp.SplitList(input); err == nil {
+			rlp.CountValues(elems)
+		}
+	}
+
+	{
+		rlp.NewStream(bytes.NewReader(input), 0).Decode(new(interface{}))
+	}
+
+	{
+		decodeEncode(input, new(interface{}), i)
+		i++
+	}
+	{
+		var v struct {
+			Int    uint
+			String string
+			Bytes  []byte
+		}
+		decodeEncode(input, &v, i)
+		i++
+	}
+
+	{
+		type Types struct {
+			Bool  bool
+			Raw   rlp.RawValue
+			Slice []*Types
+			Iface []interface{}
+		}
+		var v Types
+		decodeEncode(input, &v, i)
+		i++
+	}
+	{
+		type AllTypes struct {
+			Int    uint
+			String string
+			Bytes  []byte
+			Bool   bool
+			Raw    rlp.RawValue
+			Slice  []*AllTypes
+			Array  [3]*AllTypes
+			Iface  []interface{}
+		}
+		var v AllTypes
+		decodeEncode(input, &v, i)
+		i++
+	}
+	{
+		decodeEncode(input, [10]byte{}, i)
+		i++
+	}
+	{
+		var v struct {
+			Byte [10]byte
+			Rool [10]bool
+		}
+		decodeEncode(input, &v, i)
+		i++
+	}
+	{
+		var h types.Header
+		decodeEncode(input, &h, i)
+		i++
+		var b types.Block
+		decodeEncode(input, &b, i)
+		i++
+		var t types.Transaction
+		decodeEncode(input, &t, i)
+		i++
+		var txs types.Transactions
+		decodeEncode(input, &txs, i)
+		i++
+		var rs types.Receipts
+		decodeEncode(input, &rs, i)
+	}
+	{
+		i++
+		var v struct {
+			AnIntPtr  *big.Int
+			AnInt     big.Int
+			AnU256Ptr *uint256.Int
+			AnU256    uint256.Int
+			NotAnU256 [4]uint64
+		}
+		decodeEncode(input, &v, i)
+	}
+	return 1
+}