all: use stateless keccak

cmd/devp2p/internal/ethtest/snap.go

@@ -900,16 +900,12 @@ func (s *Suite) snapGetByteCodes(t *utesting.T, tc *byteCodesTest) error {
 	// that the serving node is missing
 	var (
 		bytecodes = res.Codes
-		hasher    = crypto.NewKeccakState()
-		hash      = make([]byte, 32)
 		codes     = make([][]byte, len(req.Hashes))
 	)
 
 	for i, j := 0, 0; i < len(bytecodes); i++ {
 		// Find the next hash that we've been served, leaving misses with nils
-		hasher.Reset()
-		hasher.Write(bytecodes[i])
-		hasher.Read(hash)
+		hash := crypto.Keccak256(bytecodes[i])
 
 		for j < len(req.Hashes) && !bytes.Equal(hash, req.Hashes[j][:]) {
 			j++
@@ -959,16 +955,12 @@ func (s *Suite) snapGetTrieNodes(t *utesting.T, tc *trieNodesTest) error {
 
 	// Cross reference the requested trienodes with the response to find gaps
 	// that the serving node is missing
-	hasher := crypto.NewKeccakState()
-	hash := make([]byte, 32)
 	trienodes := res.Nodes
 	if got, want := len(trienodes), len(tc.expHashes); got != want {
 		return fmt.Errorf("wrong trienode count, got %d, want %d", got, want)
 	}
 	for i, trienode := range trienodes {
-		hasher.Reset()
-		hasher.Write(trienode)
-		hasher.Read(hash)
+		hash := crypto.Keccak256(trienode[:])
 		if got, want := hash, tc.expHashes[i]; !bytes.Equal(got, want[:]) {
 			t.Logf("  hash %d wrong, got %#x, want %#x\n", i, got, want)
 			err = fmt.Errorf("hash %d wrong, got %#x, want %#x", i, got, want)

cmd/geth/dbcmd.go

@@ -354,8 +354,6 @@ func checkStateContent(ctx *cli.Context) error {
 	defer db.Close()
 	var (
 		it        = rawdb.NewKeyLengthIterator(db.NewIterator(prefix, start), 32)
-		hasher    = crypto.NewKeccakState()
-		got       = make([]byte, 32)
 		errs      int
 		count     int
 		startTime = time.Now()
@@ -365,9 +363,7 @@ func checkStateContent(ctx *cli.Context) error {
 		count++
 		k := it.Key()
 		v := it.Value()
-		hasher.Reset()
-		hasher.Write(v)
-		hasher.Read(got)
+		got := crypto.Keccak256(v)
 		if !bytes.Equal(k, got) {
 			errs++
 			fmt.Printf("Error at %#x\n", k)

cmd/geth/snapshot.go

@@ -430,8 +430,6 @@ func traverseRawState(ctx *cli.Context) error {
 		codes      int
 		lastReport time.Time
 		start      = time.Now()
-		hasher     = crypto.NewKeccakState()
-		got        = make([]byte, 32)
 	)
 	accIter, err := t.NodeIterator(nil)
 	if err != nil {
@@ -455,9 +453,7 @@ func traverseRawState(ctx *cli.Context) error {
 				log.Error("Missing trie node(account)", "hash", node)
 				return errors.New("missing account")
 			}
-			hasher.Reset()
-			hasher.Write(blob)
-			hasher.Read(got)
+			got := crypto.Keccak256(blob)
 			if !bytes.Equal(got, node.Bytes()) {
 				log.Error("Invalid trie node(account)", "hash", node.Hex(), "value", blob)
 				return errors.New("invalid account node")
@@ -496,9 +492,7 @@ func traverseRawState(ctx *cli.Context) error {
 							log.Error("Missing trie node(storage)", "hash", node)
 							return errors.New("missing storage")
 						}
-						hasher.Reset()
-						hasher.Write(blob)
-						hasher.Read(got)
+						got := crypto.Keccak256(blob)
 						if !bytes.Equal(got, node.Bytes()) {
 							log.Error("Invalid trie node(storage)", "hash", node.Hex(), "value", blob)
 							return errors.New("invalid storage node")

cmd/workload/historytestgen.go

@@ -132,9 +132,8 @@ func generateHistoryTests(clictx *cli.Context) error {
 }
 
 func calcReceiptsHash(rcpt []*types.Receipt) common.Hash {
-	h := crypto.NewKeccakState()
-	rlp.Encode(h, rcpt)
-	return common.Hash(h.Sum(nil))
+	encoded, _ := rlp.EncodeToBytes(rcpt)
+	return crypto.Keccak256Hash(encoded)
 }
 
 func writeJSON(fileName string, value any) {

consensus/clique/clique.go

@@ -42,7 +42,6 @@ import (
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/trie"
-	"golang.org/x/crypto/sha3"
 )
 
 const (
@@ -641,11 +640,9 @@ func (c *Clique) Close() error {
 }
 
 // SealHash returns the hash of a block prior to it being sealed.
-func SealHash(header *types.Header) (hash common.Hash) {
-	hasher := sha3.NewLegacyKeccak256()
-	encodeSigHeader(hasher, header)
-	hasher.(crypto.KeccakState).Read(hash[:])
-	return hash
+func SealHash(header *types.Header) common.Hash {
+	encoded := CliqueRLP(header)
+	return crypto.Keccak256Hash(encoded)
 }
 
 // CliqueRLP returns the rlp bytes which needs to be signed for the proof-of-authority

core/stateless/database.go

@@ -34,33 +34,21 @@ import (
 //
 // Acceleration structures built would need to explicitly validate the witness.
 func (w *Witness) MakeHashDB() ethdb.Database {
-	var (
-		memdb  = rawdb.NewMemoryDatabase()
-		hasher = crypto.NewKeccakState()
-		hash   = make([]byte, 32)
-	)
+	var memdb = rawdb.NewMemoryDatabase()
 	// Inject all the "block hashes" (i.e. headers) into the ephemeral database
 	for _, header := range w.Headers {
 		rawdb.WriteHeader(memdb, header)
 	}
 	// Inject all the bytecodes into the ephemeral database
 	for code := range w.Codes {
 		blob := []byte(code)
-
-		hasher.Reset()
-		hasher.Write(blob)
-		hasher.Read(hash)
-
+		hash := crypto.Keccak256(blob)
 		rawdb.WriteCode(memdb, common.BytesToHash(hash), blob)
 	}
 	// Inject all the MPT trie nodes into the ephemeral database
 	for node := range w.State {
 		blob := []byte(node)
-
-		hasher.Reset()
-		hasher.Write(blob)
-		hasher.Read(hash)
-
+		hash := crypto.Keccak256(blob)
 		rawdb.WriteLegacyTrieNode(memdb, common.BytesToHash(hash), blob)
 	}
 	return memdb

core/types/bloom9.go

@@ -141,11 +141,8 @@ func Bloom9(data []byte) []byte {
 
 // bloomValues returns the bytes (index-value pairs) to set for the given data
 func bloomValues(data []byte, hashbuf *[6]byte) (uint, byte, uint, byte, uint, byte) {
-	sha := hasherPool.Get().(crypto.KeccakState)
-	sha.Reset()
-	sha.Write(data)
-	sha.Read(hashbuf[:])
-	hasherPool.Put(sha)
+	hash := crypto.Keccak256(data)
+	copy(hashbuf[:], hash[:6])
 	// The actual bits to flip
 	v1 := byte(1 << (hashbuf[1] & 0x7))
 	v2 := byte(1 << (hashbuf[3] & 0x7))

core/types/hashing.go

@@ -27,11 +27,6 @@ import (
 	"github.com/ethereum/go-ethereum/rlp"
 )
 
-// hasherPool holds LegacyKeccak256 buffer for rlpHash.
-var hasherPool = sync.Pool{
-	New: func() interface{} { return crypto.NewKeccakState() },
-}
-
 // encodeBufferPool holds temporary encoder buffers for DeriveSha and TX encoding.
 var encodeBufferPool = sync.Pool{
 	New: func() interface{} { return new(bytes.Buffer) },
@@ -55,24 +50,15 @@ func getPooledBuffer(size uint64) ([]byte, *bytes.Buffer, error) {
 
 // rlpHash encodes x and hashes the encoded bytes.
 func rlpHash(x interface{}) (h common.Hash) {
-	sha := hasherPool.Get().(crypto.KeccakState)
-	defer hasherPool.Put(sha)
-	sha.Reset()
-	rlp.Encode(sha, x)
-	sha.Read(h[:])
-	return h
+	encoded, _ := rlp.EncodeToBytes(x)
+	return crypto.Keccak256Hash(encoded)
 }
 
 // prefixedRlpHash writes the prefix into the hasher before rlp-encoding x.
 // It's used for typed transactions.
 func prefixedRlpHash(prefix byte, x interface{}) (h common.Hash) {
-	sha := hasherPool.Get().(crypto.KeccakState)
-	defer hasherPool.Put(sha)
-	sha.Reset()
-	sha.Write([]byte{prefix})
-	rlp.Encode(sha, x)
-	sha.Read(h[:])
-	return h
+	encoded, _ := rlp.EncodeToBytes(x)
+	return crypto.Keccak256Hash([]byte{prefix}, encoded)
 }
 
 // ListHasher defines the interface for computing the hash of a derivable list.

core/vm/evm.go

@@ -125,9 +125,6 @@ type EVM struct {
 	// jumpDests stores results of JUMPDEST analysis.
 	jumpDests JumpDestCache
 
-	hasher    crypto.KeccakState // Keccak256 hasher instance shared across opcodes
-	hasherBuf common.Hash        // Keccak256 hasher result array shared across opcodes
-
 	readOnly   bool   // Whether to throw on stateful modifications
 	returnData []byte // Last CALL's return data for subsequent reuse
 }
@@ -144,7 +141,6 @@ func NewEVM(blockCtx BlockContext, statedb StateDB, chainConfig *params.ChainCon
 		chainConfig: chainConfig,
 		chainRules:  chainConfig.Rules(blockCtx.BlockNumber, blockCtx.Random != nil, blockCtx.Time),
 		jumpDests:   newMapJumpDests(),
-		hasher:      crypto.NewKeccakState(),
 	}
 	evm.precompiles = activePrecompiledContracts(evm.chainRules)
 
@@ -618,8 +614,8 @@ func (evm *EVM) Create(caller common.Address, code []byte, gas uint64, value *ui
 // The different between Create2 with Create is Create2 uses keccak256(0xff ++ msg.sender ++ salt ++ keccak256(init_code))[12:]
 // instead of the usual sender-and-nonce-hash as the address where the contract is initialized at.
 func (evm *EVM) Create2(caller common.Address, code []byte, gas uint64, endowment *uint256.Int, salt *uint256.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) {
-	inithash := crypto.HashData(evm.hasher, code)
-	contractAddr = crypto.CreateAddress2(caller, salt.Bytes32(), inithash[:])
+	inithash := crypto.Keccak256(code)
+	contractAddr = crypto.CreateAddress2(caller, salt.Bytes32(), inithash)
 	return evm.create(caller, code, gas, endowment, contractAddr, CREATE2)
 }
 

core/vm/instructions.go

@@ -22,6 +22,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/tracing"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/holiman/uint256"
 )
@@ -233,14 +234,11 @@ func opKeccak256(pc *uint64, evm *EVM, scope *ScopeContext) ([]byte, error) {
 	offset, size := scope.Stack.pop(), scope.Stack.peek()
 	data := scope.Memory.GetPtr(offset.Uint64(), size.Uint64())
 
-	evm.hasher.Reset()
-	evm.hasher.Write(data)
-	evm.hasher.Read(evm.hasherBuf[:])
-
+	hash := crypto.Keccak256Hash(data)
 	if evm.Config.EnablePreimageRecording {
-		evm.StateDB.AddPreimage(evm.hasherBuf, data)
+		evm.StateDB.AddPreimage(hash, data)
 	}
-	size.SetBytes(evm.hasherBuf[:])
+	size.SetBytes(hash[:])
 	return nil, nil
 }
 

crypto/crypto.go

@@ -64,15 +64,7 @@ type EllipticCurve interface {
 // because it doesn't copy the internal state, but also modifies the internal state.
 type KeccakState interface {
 	hash.Hash
-	Read([]byte) (int, error)
-}
-
-// HashData hashes the provided data using the KeccakState and returns a 32 byte hash
-func HashData(kh KeccakState, data []byte) (h common.Hash) {
-	kh.Reset()
-	kh.Write(data)
-	kh.Read(h[:])
-	return h
+	io.Reader
 }
 
 // CreateAddress creates an ethereum address given the bytes and the nonce

crypto/crypto_test.go

@@ -45,8 +45,7 @@ func TestKeccak256Hash(t *testing.T) {
 func TestKeccak256Hasher(t *testing.T) {
 	msg := []byte("abc")
 	exp, _ := hex.DecodeString("4e03657aea45a94fc7d47ba826c8d667c0d1e6e33a64a036ec44f58fa12d6c45")
-	hasher := NewKeccakState()
-	checkhash(t, "Sha3-256-array", func(in []byte) []byte { h := HashData(hasher, in); return h[:] }, msg, exp)
+	checkhash(t, "Sha3-256-array", func(in []byte) []byte { h := Keccak256Hash(in); return h[:] }, msg, exp)
 }
 
 func TestToECDSAErrors(t *testing.T) {
@@ -314,22 +313,3 @@ func BenchmarkKeccak256Hash(b *testing.B) {
 		Keccak256Hash(input[:])
 	}
 }
-
-// goos: darwin
-// goarch: arm64
-// pkg: github.com/ethereum/go-ethereum/crypto
-// cpu: Apple M1 Pro
-// BenchmarkHashData
-// BenchmarkHashData-8   	  793386	      1278 ns/op	      32 B/op	       1 allocs/op
-func BenchmarkHashData(b *testing.B) {
-	var (
-		input  [512]byte
-		buffer = NewKeccakState()
-	)
-	rand.Read(input[:])
-
-	b.ReportAllocs()
-	for b.Loop() {
-		HashData(buffer, input[:])
-	}
-}

crypto/keccak.go

@@ -32,32 +32,30 @@ func NewKeccakState() KeccakState {
 
 var hasherPool = sync.Pool{
 	New: func() any {
-		return sha3.NewLegacyKeccak256().(KeccakState)
+		return NewKeccakState()
 	},
 }
 
 // Keccak256 calculates and returns the Keccak256 hash of the input data.
 func Keccak256(data ...[]byte) []byte {
 	b := make([]byte, 32)
-	d := hasherPool.Get().(KeccakState)
-	d.Reset()
-	for _, b := range data {
-		d.Write(b)
-	}
-	d.Read(b)
-	hasherPool.Put(d)
+	hashInto(b, data...)
 	return b
 }
 
 // Keccak256Hash calculates and returns the Keccak256 hash of the input data,
 // converting it to an internal Hash data structure.
 func Keccak256Hash(data ...[]byte) (h common.Hash) {
+	hashInto(h[:], data...)
+	return h
+}
+
+func hashInto(out []byte, data ...[]byte) {
 	d := hasherPool.Get().(KeccakState)
+	defer hasherPool.Put(d)
 	d.Reset()
 	for _, b := range data {
 		d.Write(b)
 	}
-	d.Read(h[:])
-	hasherPool.Put(d)
-	return h
+	d.Read(out)
 }