vendor, crypto, swarm: switch over to upstream sha3 package

cmd/swarm/access_test.go

@@ -33,11 +33,11 @@ import (
 
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/crypto/ecies"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/swarm/api"
 	swarmapi "github.com/ethereum/go-ethereum/swarm/api/client"
 	"github.com/ethereum/go-ethereum/swarm/testutil"
+	"golang.org/x/crypto/sha3"
 )
 
 const (
@@ -598,7 +598,7 @@ func TestKeypairSanity(t *testing.T) {
 			t.Fatal(err)
 		}
 
-		hasher := sha3.NewKeccak256()
+		hasher := sha3.NewLegacyKeccak256()
 		hasher.Write(salt)
 		shared, err := hex.DecodeString(sharedSecret)
 		if err != nil {

common/types.go

@@ -27,7 +27,7 @@ import (
 	"strings"
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
+	"golang.org/x/crypto/sha3"
 )
 
 // Lengths of hashes and addresses in bytes.
@@ -196,7 +196,7 @@ func (a Address) Hash() Hash { return BytesToHash(a[:]) }
 // Hex returns an EIP55-compliant hex string representation of the address.
 func (a Address) Hex() string {
 	unchecksummed := hex.EncodeToString(a[:])
-	sha := sha3.NewKeccak256()
+	sha := sha3.NewLegacyKeccak256()
 	sha.Write([]byte(unchecksummed))
 	hash := sha.Sum(nil)
 

consensus/clique/clique.go

@@ -33,13 +33,13 @@ import (
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/rpc"
 	lru "github.com/hashicorp/golang-lru"
+	"golang.org/x/crypto/sha3"
 )
 
 const (
@@ -148,7 +148,7 @@ type SignerFn func(accounts.Account, []byte) ([]byte, error)
 // panics. This is done to avoid accidentally using both forms (signature present
 // or not), which could be abused to produce different hashes for the same header.
 func sigHash(header *types.Header) (hash common.Hash) {
-	hasher := sha3.NewKeccak256()
+	hasher := sha3.NewLegacyKeccak256()
 
 	rlp.Encode(hasher, []interface{}{
 		header.ParentHash,

consensus/ethash/algorithm.go

@@ -30,8 +30,8 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/bitutil"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/log"
+	"golang.org/x/crypto/sha3"
 )
 
 const (
@@ -123,7 +123,7 @@ func seedHash(block uint64) []byte {
 	if block < epochLength {
 		return seed
 	}
-	keccak256 := makeHasher(sha3.NewKeccak256())
+	keccak256 := makeHasher(sha3.NewLegacyKeccak256())
 	for i := 0; i < int(block/epochLength); i++ {
 		keccak256(seed, seed)
 	}
@@ -177,7 +177,7 @@ func generateCache(dest []uint32, epoch uint64, seed []byte) {
 		}
 	}()
 	// Create a hasher to reuse between invocations
-	keccak512 := makeHasher(sha3.NewKeccak512())
+	keccak512 := makeHasher(sha3.NewLegacyKeccak512())
 
 	// Sequentially produce the initial dataset
 	keccak512(cache, seed)
@@ -301,7 +301,7 @@ func generateDataset(dest []uint32, epoch uint64, cache []uint32) {
 			defer pend.Done()
 
 			// Create a hasher to reuse between invocations
-			keccak512 := makeHasher(sha3.NewKeccak512())
+			keccak512 := makeHasher(sha3.NewLegacyKeccak512())
 
 			// Calculate the data segment this thread should generate
 			batch := uint32((size + hashBytes*uint64(threads) - 1) / (hashBytes * uint64(threads)))
@@ -375,7 +375,7 @@ func hashimoto(hash []byte, nonce uint64, size uint64, lookup func(index uint32)
 // in-memory cache) in order to produce our final value for a particular header
 // hash and nonce.
 func hashimotoLight(size uint64, cache []uint32, hash []byte, nonce uint64) ([]byte, []byte) {
-	keccak512 := makeHasher(sha3.NewKeccak512())
+	keccak512 := makeHasher(sha3.NewLegacyKeccak512())
 
 	lookup := func(index uint32) []uint32 {
 		rawData := generateDatasetItem(cache, index, keccak512)

consensus/ethash/consensus.go

@@ -31,9 +31,9 @@ import (
 	"github.com/ethereum/go-ethereum/consensus/misc"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
+	"golang.org/x/crypto/sha3"
 )
 
 // Ethash proof-of-work protocol constants.
@@ -575,7 +575,7 @@ func (ethash *Ethash) Finalize(chain consensus.ChainReader, header *types.Header
 
 // SealHash returns the hash of a block prior to it being sealed.
 func (ethash *Ethash) SealHash(header *types.Header) (hash common.Hash) {
-	hasher := sha3.NewKeccak256()
+	hasher := sha3.NewLegacyKeccak256()
 
 	rlp.Encode(hasher, []interface{}{
 		header.ParentHash,

core/rawdb/accessors_chain_test.go

@@ -23,9 +23,9 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/rlp"
+	"golang.org/x/crypto/sha3"
 )
 
 // Tests block header storage and retrieval operations.
@@ -47,7 +47,7 @@ func TestHeaderStorage(t *testing.T) {
 	if entry := ReadHeaderRLP(db, header.Hash(), header.Number.Uint64()); entry == nil {
 		t.Fatalf("Stored header RLP not found")
 	} else {
-		hasher := sha3.NewKeccak256()
+		hasher := sha3.NewLegacyKeccak256()
 		hasher.Write(entry)
 
 		if hash := common.BytesToHash(hasher.Sum(nil)); hash != header.Hash() {
@@ -68,7 +68,7 @@ func TestBodyStorage(t *testing.T) {
 	// Create a test body to move around the database and make sure it's really new
 	body := &types.Body{Uncles: []*types.Header{{Extra: []byte("test header")}}}
 
-	hasher := sha3.NewKeccak256()
+	hasher := sha3.NewLegacyKeccak256()
 	rlp.Encode(hasher, body)
 	hash := common.BytesToHash(hasher.Sum(nil))
 
@@ -85,7 +85,7 @@ func TestBodyStorage(t *testing.T) {
 	if entry := ReadBodyRLP(db, hash, 0); entry == nil {
 		t.Fatalf("Stored body RLP not found")
 	} else {
-		hasher := sha3.NewKeccak256()
+		hasher := sha3.NewLegacyKeccak256()
 		hasher.Write(entry)
 
 		if calc := common.BytesToHash(hasher.Sum(nil)); calc != hash {

core/types/block.go

@@ -28,8 +28,8 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/rlp"
+	"golang.org/x/crypto/sha3"
 )
 
 var (
@@ -109,7 +109,7 @@ func (h *Header) Size() common.StorageSize {
 }
 
 func rlpHash(x interface{}) (h common.Hash) {
-	hw := sha3.NewKeccak256()
+	hw := sha3.NewLegacyKeccak256()
 	rlp.Encode(hw, x)
 	hw.Sum(h[:0])
 	return h

core/vm/instructions.go

@@ -24,8 +24,8 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/params"
+	"golang.org/x/crypto/sha3"
 )
 
 var (
@@ -387,7 +387,7 @@ func opSha3(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory
 	data := memory.Get(offset.Int64(), size.Int64())
 
 	if interpreter.hasher == nil {
-		interpreter.hasher = sha3.NewKeccak256().(keccakState)
+		interpreter.hasher = sha3.NewLegacyKeccak256().(keccakState)
 	} else {
 		interpreter.hasher.Reset()
 	}

crypto/crypto.go

@@ -30,8 +30,8 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/math"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/rlp"
+	"golang.org/x/crypto/sha3"
 )
 
 var (
@@ -43,7 +43,7 @@ var errInvalidPubkey = errors.New("invalid secp256k1 public key")
 
 // Keccak256 calculates and returns the Keccak256 hash of the input data.
 func Keccak256(data ...[]byte) []byte {
-	d := sha3.NewKeccak256()
+	d := sha3.NewLegacyKeccak256()
 	for _, b := range data {
 		d.Write(b)
 	}
@@ -53,7 +53,7 @@ func Keccak256(data ...[]byte) []byte {
 // 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) {
-	d := sha3.NewKeccak256()
+	d := sha3.NewLegacyKeccak256()
 	for _, b := range data {
 		d.Write(b)
 	}
@@ -63,7 +63,7 @@ func Keccak256Hash(data ...[]byte) (h common.Hash) {
 
 // Keccak512 calculates and returns the Keccak512 hash of the input data.
 func Keccak512(data ...[]byte) []byte {
-	d := sha3.NewKeccak512()
+	d := sha3.NewLegacyKeccak512()
 	for _, b := range data {
 		d.Write(b)
 	}

crypto/sha3/LICENSE

-Copyright (c) 2009 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

crypto/sha3/PATENTS

-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Go project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Go, where such license applies only to those patent
-claims, both currently owned or controlled by Google and acquired in
-the future, licensable by Google that are necessarily infringed by this
-implementation of Go.  This grant does not include claims that would be
-infringed only as a consequence of further modification of this
-implementation.  If you or your agent or exclusive licensee institute or
-order or agree to the institution of patent litigation against any
-entity (including a cross-claim or counterclaim in a lawsuit) alleging
-that this implementation of Go or any code incorporated within this
-implementation of Go constitutes direct or contributory patent
-infringement, or inducement of patent infringement, then any patent
-rights granted to you under this License for this implementation of Go
-shall terminate as of the date such litigation is filed.

crypto/sha3/sha3_test.go

-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package sha3
-
-// Tests include all the ShortMsgKATs provided by the Keccak team at
-// https://github.com/gvanas/KeccakCodePackage
-//
-// They only include the zero-bit case of the bitwise testvectors
-// published by NIST in the draft of FIPS-202.
-
-import (
-	"bytes"
-	"compress/flate"
-	"encoding/hex"
-	"encoding/json"
-	"hash"
-	"os"
-	"strings"
-	"testing"
-)
-
-const (
-	testString  = "brekeccakkeccak koax koax"
-	katFilename = "testdata/keccakKats.json.deflate"
-)
-
-// Internal-use instances of SHAKE used to test against KATs.
-func newHashShake128() hash.Hash {
-	return &state{rate: 168, dsbyte: 0x1f, outputLen: 512}
-}
-func newHashShake256() hash.Hash {
-	return &state{rate: 136, dsbyte: 0x1f, outputLen: 512}
-}
-
-// testDigests contains functions returning hash.Hash instances
-// with output-length equal to the KAT length for both SHA-3 and
-// SHAKE instances.
-var testDigests = map[string]func() hash.Hash{
-	"SHA3-224": New224,
-	"SHA3-256": New256,
-	"SHA3-384": New384,
-	"SHA3-512": New512,
-	"SHAKE128": newHashShake128,
-	"SHAKE256": newHashShake256,
-}
-
-// testShakes contains functions that return ShakeHash instances for
-// testing the ShakeHash-specific interface.
-var testShakes = map[string]func() ShakeHash{
-	"SHAKE128": NewShake128,
-	"SHAKE256": NewShake256,
-}
-
-// structs used to marshal JSON test-cases.
-type KeccakKats struct {
-	Kats map[string][]struct {
-		Digest  string `json:"digest"`
-		Length  int64  `json:"length"`
-		Message string `json:"message"`
-	}
-}
-
-func testUnalignedAndGeneric(t *testing.T, testf func(impl string)) {
-	xorInOrig, copyOutOrig := xorIn, copyOut
-	xorIn, copyOut = xorInGeneric, copyOutGeneric
-	testf("generic")
-	if xorImplementationUnaligned != "generic" {
-		xorIn, copyOut = xorInUnaligned, copyOutUnaligned
-		testf("unaligned")
-	}
-	xorIn, copyOut = xorInOrig, copyOutOrig
-}
-
-// TestKeccakKats tests the SHA-3 and Shake implementations against all the
-// ShortMsgKATs from https://github.com/gvanas/KeccakCodePackage
-// (The testvectors are stored in keccakKats.json.deflate due to their length.)
-func TestKeccakKats(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		// Read the KATs.
-		deflated, err := os.Open(katFilename)
-		if err != nil {
-			t.Errorf("error opening %s: %s", katFilename, err)
-		}
-		file := flate.NewReader(deflated)
-		dec := json.NewDecoder(file)
-		var katSet KeccakKats
-		err = dec.Decode(&katSet)
-		if err != nil {
-			t.Errorf("error decoding KATs: %s", err)
-		}
-
-		// Do the KATs.
-		for functionName, kats := range katSet.Kats {
-			d := testDigests[functionName]()
-			for _, kat := range kats {
-				d.Reset()
-				in, err := hex.DecodeString(kat.Message)
-				if err != nil {
-					t.Errorf("error decoding KAT: %s", err)
-				}
-				d.Write(in[:kat.Length/8])
-				got := strings.ToUpper(hex.EncodeToString(d.Sum(nil)))
-				if got != kat.Digest {
-					t.Errorf("function=%s, implementation=%s, length=%d\nmessage:\n  %s\ngot:\n  %s\nwanted:\n %s",
-						functionName, impl, kat.Length, kat.Message, got, kat.Digest)
-					t.Logf("wanted %+v", kat)
-					t.FailNow()
-				}
-				continue
-			}
-		}
-	})
-}
-
-// TestUnalignedWrite tests that writing data in an arbitrary pattern with
-// small input buffers.
-func TestUnalignedWrite(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		buf := sequentialBytes(0x10000)
-		for alg, df := range testDigests {
-			d := df()
-			d.Reset()
-			d.Write(buf)
-			want := d.Sum(nil)
-			d.Reset()
-			for i := 0; i < len(buf); {
-				// Cycle through offsets which make a 137 byte sequence.
-				// Because 137 is prime this sequence should exercise all corner cases.
-				offsets := [17]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1}
-				for _, j := range offsets {
-					if v := len(buf) - i; v < j {
-						j = v
-					}
-					d.Write(buf[i : i+j])
-					i += j
-				}
-			}
-			got := d.Sum(nil)
-			if !bytes.Equal(got, want) {
-				t.Errorf("Unaligned writes, implementation=%s, alg=%s\ngot %q, want %q", impl, alg, got, want)
-			}
-		}
-	})
-}
-
-// TestAppend checks that appending works when reallocation is necessary.
-func TestAppend(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		d := New224()
-
-		for capacity := 2; capacity <= 66; capacity += 64 {
-			// The first time around the loop, Sum will have to reallocate.
-			// The second time, it will not.
-			buf := make([]byte, 2, capacity)
-			d.Reset()
-			d.Write([]byte{0xcc})
-			buf = d.Sum(buf)
-			expected := "0000DF70ADC49B2E76EEE3A6931B93FA41841C3AF2CDF5B32A18B5478C39"
-			if got := strings.ToUpper(hex.EncodeToString(buf)); got != expected {
-				t.Errorf("got %s, want %s", got, expected)
-			}
-		}
-	})
-}
-
-// TestAppendNoRealloc tests that appending works when no reallocation is necessary.
-func TestAppendNoRealloc(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		buf := make([]byte, 1, 200)
-		d := New224()
-		d.Write([]byte{0xcc})
-		buf = d.Sum(buf)
-		expected := "00DF70ADC49B2E76EEE3A6931B93FA41841C3AF2CDF5B32A18B5478C39"
-		if got := strings.ToUpper(hex.EncodeToString(buf)); got != expected {
-			t.Errorf("%s: got %s, want %s", impl, got, expected)
-		}
-	})
-}
-
-// TestSqueezing checks that squeezing the full output a single time produces
-// the same output as repeatedly squeezing the instance.
-func TestSqueezing(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		for functionName, newShakeHash := range testShakes {
-			d0 := newShakeHash()
-			d0.Write([]byte(testString))
-			ref := make([]byte, 32)
-			d0.Read(ref)
-
-			d1 := newShakeHash()
-			d1.Write([]byte(testString))
-			var multiple []byte
-			for range ref {
-				one := make([]byte, 1)
-				d1.Read(one)
-				multiple = append(multiple, one...)
-			}
-			if !bytes.Equal(ref, multiple) {
-				t.Errorf("%s (%s): squeezing %d bytes one at a time failed", functionName, impl, len(ref))
-			}
-		}
-	})
-}
-
-// sequentialBytes produces a buffer of size consecutive bytes 0x00, 0x01, ..., used for testing.
-func sequentialBytes(size int) []byte {
-	result := make([]byte, size)
-	for i := range result {
-		result[i] = byte(i)
-	}
-	return result
-}
-
-// BenchmarkPermutationFunction measures the speed of the permutation function
-// with no input data.
-func BenchmarkPermutationFunction(b *testing.B) {
-	b.SetBytes(int64(200))
-	var lanes [25]uint64
-	for i := 0; i < b.N; i++ {
-		keccakF1600(&lanes)
-	}
-}
-
-// benchmarkHash tests the speed to hash num buffers of buflen each.
-func benchmarkHash(b *testing.B, h hash.Hash, size, num int) {
-	b.StopTimer()
-	h.Reset()
-	data := sequentialBytes(size)
-	b.SetBytes(int64(size * num))
-	b.StartTimer()
-
-	var state []byte
-	for i := 0; i < b.N; i++ {
-		for j := 0; j < num; j++ {
-			h.Write(data)
-		}
-		state = h.Sum(state[:0])
-	}
-	b.StopTimer()
-	h.Reset()
-}
-
-// benchmarkShake is specialized to the Shake instances, which don't
-// require a copy on reading output.
-func benchmarkShake(b *testing.B, h ShakeHash, size, num int) {
-	b.StopTimer()
-	h.Reset()
-	data := sequentialBytes(size)
-	d := make([]byte, 32)
-
-	b.SetBytes(int64(size * num))
-	b.StartTimer()
-
-	for i := 0; i < b.N; i++ {
-		h.Reset()
-		for j := 0; j < num; j++ {
-			h.Write(data)
-		}
-		h.Read(d)
-	}
-}
-
-func BenchmarkSha3_512_MTU(b *testing.B) { benchmarkHash(b, New512(), 1350, 1) }
-func BenchmarkSha3_384_MTU(b *testing.B) { benchmarkHash(b, New384(), 1350, 1) }
-func BenchmarkSha3_256_MTU(b *testing.B) { benchmarkHash(b, New256(), 1350, 1) }
-func BenchmarkSha3_224_MTU(b *testing.B) { benchmarkHash(b, New224(), 1350, 1) }
-
-func BenchmarkShake128_MTU(b *testing.B)  { benchmarkShake(b, NewShake128(), 1350, 1) }
-func BenchmarkShake256_MTU(b *testing.B)  { benchmarkShake(b, NewShake256(), 1350, 1) }
-func BenchmarkShake256_16x(b *testing.B)  { benchmarkShake(b, NewShake256(), 16, 1024) }
-func BenchmarkShake256_1MiB(b *testing.B) { benchmarkShake(b, NewShake256(), 1024, 1024) }
-
-func BenchmarkSha3_512_1MiB(b *testing.B) { benchmarkHash(b, New512(), 1024, 1024) }
-
-func Example_sum() {
-	buf := []byte("some data to hash")
-	// A hash needs to be 64 bytes long to have 256-bit collision resistance.
-	h := make([]byte, 64)
-	// Compute a 64-byte hash of buf and put it in h.
-	ShakeSum256(h, buf)
-}
-
-func Example_mac() {
-	k := []byte("this is a secret key; you should generate a strong random key that's at least 32 bytes long")
-	buf := []byte("and this is some data to authenticate")
-	// A MAC with 32 bytes of output has 256-bit security strength -- if you use at least a 32-byte-long key.
-	h := make([]byte, 32)
-	d := NewShake256()
-	// Write the key into the hash.
-	d.Write(k)
-	// Now write the data.
-	d.Write(buf)
-	// Read 32 bytes of output from the hash into h.
-	d.Read(h)
-}

eth/downloader/statesync.go

@@ -25,10 +25,10 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/state"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/trie"
+	"golang.org/x/crypto/sha3"
 )
 
 // stateReq represents a batch of state fetch requests grouped together into
@@ -240,7 +240,7 @@ func newStateSync(d *Downloader, root common.Hash) *stateSync {
 	return &stateSync{
 		d:       d,
 		sched:   state.NewStateSync(root, d.stateDB),
-		keccak:  sha3.NewKeccak256(),
+		keccak:  sha3.NewLegacyKeccak256(),
 		tasks:   make(map[common.Hash]*stateTask),
 		deliver: make(chan *stateReq),
 		cancel:  make(chan struct{}),

p2p/discv5/net.go

@@ -27,10 +27,10 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/mclock"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/p2p/netutil"
 	"github.com/ethereum/go-ethereum/rlp"
+	"golang.org/x/crypto/sha3"
 )
 
 var (
@@ -1234,7 +1234,7 @@ func (net *Network) checkTopicRegister(data *topicRegister) (*pong, error) {
 }
 
 func rlpHash(x interface{}) (h common.Hash) {
-	hw := sha3.NewKeccak256()
+	hw := sha3.NewLegacyKeccak256()
 	rlp.Encode(hw, x)
 	hw.Sum(h[:0])
 	return h

p2p/enode/idscheme.go

@@ -23,9 +23,9 @@ import (
 
 	"github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/p2p/enr"
 	"github.com/ethereum/go-ethereum/rlp"
+	"golang.org/x/crypto/sha3"
 )
 
 // List of known secure identity schemes.
@@ -48,7 +48,7 @@ func SignV4(r *enr.Record, privkey *ecdsa.PrivateKey) error {
 	cpy.Set(enr.ID("v4"))
 	cpy.Set(Secp256k1(privkey.PublicKey))
 
-	h := sha3.NewKeccak256()
+	h := sha3.NewLegacyKeccak256()
 	rlp.Encode(h, cpy.AppendElements(nil))
 	sig, err := crypto.Sign(h.Sum(nil), privkey)
 	if err != nil {
@@ -69,7 +69,7 @@ func (V4ID) Verify(r *enr.Record, sig []byte) error {
 		return fmt.Errorf("invalid public key")
 	}
 
-	h := sha3.NewKeccak256()
+	h := sha3.NewLegacyKeccak256()
 	rlp.Encode(h, r.AppendElements(nil))
 	if !crypto.VerifySignature(entry, h.Sum(nil), sig) {
 		return enr.ErrInvalidSig

p2p/rlpx.go

@@ -39,9 +39,9 @@ import (
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/crypto/ecies"
 	"github.com/ethereum/go-ethereum/crypto/secp256k1"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/golang/snappy"
+	"golang.org/x/crypto/sha3"
 )
 
 const (
@@ -253,10 +253,10 @@ func (h *encHandshake) secrets(auth, authResp []byte) (secrets, error) {
 	}
 
 	// setup sha3 instances for the MACs
-	mac1 := sha3.NewKeccak256()
+	mac1 := sha3.NewLegacyKeccak256()
 	mac1.Write(xor(s.MAC, h.respNonce))
 	mac1.Write(auth)
-	mac2 := sha3.NewKeccak256()
+	mac2 := sha3.NewLegacyKeccak256()
 	mac2.Write(xor(s.MAC, h.initNonce))
 	mac2.Write(authResp)
 	if h.initiator {

p2p/rlpx_test.go

@@ -34,9 +34,9 @@ import (
 	"github.com/davecgh/go-spew/spew"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/crypto/ecies"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/p2p/simulations/pipes"
 	"github.com/ethereum/go-ethereum/rlp"
+	"golang.org/x/crypto/sha3"
 )
 
 func TestSharedSecret(t *testing.T) {
@@ -334,8 +334,8 @@ func TestRLPXFrameRW(t *testing.T) {
 	s1 := secrets{
 		AES:        aesSecret,
 		MAC:        macSecret,
-		EgressMAC:  sha3.NewKeccak256(),
-		IngressMAC: sha3.NewKeccak256(),
+		EgressMAC:  sha3.NewLegacyKeccak256(),
+		IngressMAC: sha3.NewLegacyKeccak256(),
 	}
 	s1.EgressMAC.Write(egressMACinit)
 	s1.IngressMAC.Write(ingressMACinit)
@@ -344,8 +344,8 @@ func TestRLPXFrameRW(t *testing.T) {
 	s2 := secrets{
 		AES:        aesSecret,
 		MAC:        macSecret,
-		EgressMAC:  sha3.NewKeccak256(),
-		IngressMAC: sha3.NewKeccak256(),
+		EgressMAC:  sha3.NewLegacyKeccak256(),
+		IngressMAC: sha3.NewLegacyKeccak256(),
 	}
 	s2.EgressMAC.Write(ingressMACinit)
 	s2.IngressMAC.Write(egressMACinit)

p2p/server_test.go

@@ -26,10 +26,10 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/p2p/enr"
+	"golang.org/x/crypto/sha3"
 )
 
 // func init() {
@@ -48,8 +48,8 @@ func newTestTransport(rpub *ecdsa.PublicKey, fd net.Conn) transport {
 	wrapped.rw = newRLPXFrameRW(fd, secrets{
 		MAC:        zero16,
 		AES:        zero16,
-		IngressMAC: sha3.NewKeccak256(),
-		EgressMAC:  sha3.NewKeccak256(),
+		IngressMAC: sha3.NewLegacyKeccak256(),
+		EgressMAC:  sha3.NewLegacyKeccak256(),
 	})
 	return &testTransport{rpub: rpub, rlpx: wrapped}
 }

swarm/api/act.go

@@ -15,11 +15,11 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/crypto/ecies"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/swarm/log"
 	"github.com/ethereum/go-ethereum/swarm/sctx"
 	"github.com/ethereum/go-ethereum/swarm/storage"
 	"golang.org/x/crypto/scrypt"
+	"golang.org/x/crypto/sha3"
 	cli "gopkg.in/urfave/cli.v1"
 )
 
@@ -336,7 +336,7 @@ func (a *API) doDecrypt(ctx context.Context, credentials string, pk *ecdsa.Priva
 }
 
 func (a *API) getACTDecryptionKey(ctx context.Context, actManifestAddress storage.Address, sessionKey []byte) (found bool, ciphertext, decryptionKey []byte, err error) {
-	hasher := sha3.NewKeccak256()
+	hasher := sha3.NewLegacyKeccak256()
 	hasher.Write(append(sessionKey, 0))
 	lookupKey := hasher.Sum(nil)
 	hasher.Reset()
@@ -462,7 +462,7 @@ func DoACT(ctx *cli.Context, privateKey *ecdsa.PrivateKey, salt []byte, grantees
 			return nil, nil, nil, err
 		}
 
-		hasher := sha3.NewKeccak256()
+		hasher := sha3.NewLegacyKeccak256()
 		hasher.Write(append(sessionKey, 0))
 		lookupKey := hasher.Sum(nil)
 
@@ -484,7 +484,7 @@ func DoACT(ctx *cli.Context, privateKey *ecdsa.PrivateKey, salt []byte, grantees
 		if err != nil {
 			return nil, nil, nil, err
 		}
-		hasher := sha3.NewKeccak256()
+		hasher := sha3.NewLegacyKeccak256()
 		hasher.Write(append(sessionKey, 0))
 		lookupKey := hasher.Sum(nil)
 

swarm/api/encrypt.go

@@ -20,8 +20,8 @@ import (
 	"encoding/binary"
 	"errors"
 
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/swarm/storage/encryption"
+	"golang.org/x/crypto/sha3"
 )
 
 type RefEncryption struct {
@@ -39,12 +39,12 @@ func NewRefEncryption(refSize int) *RefEncryption {
 }
 
 func (re *RefEncryption) Encrypt(ref []byte, key []byte) ([]byte, error) {
-	spanEncryption := encryption.New(key, 0, uint32(re.refSize/32), sha3.NewKeccak256)
+	spanEncryption := encryption.New(key, 0, uint32(re.refSize/32), sha3.NewLegacyKeccak256)
 	encryptedSpan, err := spanEncryption.Encrypt(re.span)
 	if err != nil {
 		return nil, err
 	}
-	dataEncryption := encryption.New(key, re.refSize, 0, sha3.NewKeccak256)
+	dataEncryption := encryption.New(key, re.refSize, 0, sha3.NewLegacyKeccak256)
 	encryptedData, err := dataEncryption.Encrypt(ref)
 	if err != nil {
 		return nil, err
@@ -57,7 +57,7 @@ func (re *RefEncryption) Encrypt(ref []byte, key []byte) ([]byte, error) {
 }
 
 func (re *RefEncryption) Decrypt(ref []byte, key []byte) ([]byte, error) {
-	spanEncryption := encryption.New(key, 0, uint32(re.refSize/32), sha3.NewKeccak256)
+	spanEncryption := encryption.New(key, 0, uint32(re.refSize/32), sha3.NewLegacyKeccak256)
 	decryptedSpan, err := spanEncryption.Decrypt(ref[:8])
 	if err != nil {
 		return nil, err
@@ -68,7 +68,7 @@ func (re *RefEncryption) Decrypt(ref []byte, key []byte) ([]byte, error) {
 		return nil, errors.New("invalid span in encrypted reference")
 	}
 
-	dataEncryption := encryption.New(key, re.refSize, 0, sha3.NewKeccak256)
+	dataEncryption := encryption.New(key, re.refSize, 0, sha3.NewLegacyKeccak256)
 	decryptedRef, err := dataEncryption.Decrypt(ref[8:])
 	if err != nil {
 		return nil, err

swarm/bmt/bmt.go

@@ -61,7 +61,7 @@ const (
 )
 
 // BaseHasherFunc is a hash.Hash constructor function used for the base hash of the BMT.
-// implemented by Keccak256 SHA3 sha3.NewKeccak256
+// implemented by Keccak256 SHA3 sha3.NewLegacyKeccak256
 type BaseHasherFunc func() hash.Hash
 
 // Hasher a reusable hasher for fixed maximum size chunks representing a BMT

swarm/bmt/bmt_test.go

@@ -26,8 +26,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/swarm/testutil"
+	"golang.org/x/crypto/sha3"
 )
 
 // the actual data length generated (could be longer than max datalength of the BMT)
@@ -44,7 +44,7 @@ var counts = []int{1, 2, 3, 4, 5, 8, 9, 15, 16, 17, 32, 37, 42, 53, 63, 64, 65,
 
 // calculates the Keccak256 SHA3 hash of the data
 func sha3hash(data ...[]byte) []byte {
-	h := sha3.NewKeccak256()
+	h := sha3.NewLegacyKeccak256()
 	return doSum(h, nil, data...)
 }
 
@@ -121,7 +121,7 @@ func TestRefHasher(t *testing.T) {
 				t.Run(fmt.Sprintf("%d_segments_%d_bytes", segmentCount, length), func(t *testing.T) {
 					data := testutil.RandomBytes(i, length)
 					expected := x.expected(data)
-					actual := NewRefHasher(sha3.NewKeccak256, segmentCount).Hash(data)
+					actual := NewRefHasher(sha3.NewLegacyKeccak256, segmentCount).Hash(data)
 					if !bytes.Equal(actual, expected) {
 						t.Fatalf("expected %x, got %x", expected, actual)
 					}
@@ -133,7 +133,7 @@ func TestRefHasher(t *testing.T) {
 
 // tests if hasher responds with correct hash comparing the reference implementation return value
 func TestHasherEmptyData(t *testing.T) {
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	var data []byte
 	for _, count := range counts {
 		t.Run(fmt.Sprintf("%d_segments", count), func(t *testing.T) {
@@ -153,7 +153,7 @@ func TestHasherEmptyData(t *testing.T) {
 // tests sequential write with entire max size written in one go
 func TestSyncHasherCorrectness(t *testing.T) {
 	data := testutil.RandomBytes(1, BufferSize)
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	size := hasher().Size()
 
 	var err error
@@ -179,7 +179,7 @@ func TestSyncHasherCorrectness(t *testing.T) {
 // tests order-neutral concurrent writes with entire max size written in one go
 func TestAsyncCorrectness(t *testing.T) {
 	data := testutil.RandomBytes(1, BufferSize)
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	size := hasher().Size()
 	whs := []whenHash{first, last, random}
 
@@ -226,7 +226,7 @@ func TestHasherReuse(t *testing.T) {
 
 // tests if bmt reuse is not corrupting result
 func testHasherReuse(poolsize int, t *testing.T) {
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	pool := NewTreePool(hasher, segmentCount, poolsize)
 	defer pool.Drain(0)
 	bmt := New(pool)
@@ -243,7 +243,7 @@ func testHasherReuse(poolsize int, t *testing.T) {
 
 // Tests if pool can be cleanly reused even in concurrent use by several hasher
 func TestBMTConcurrentUse(t *testing.T) {
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	pool := NewTreePool(hasher, segmentCount, PoolSize)
 	defer pool.Drain(0)
 	cycles := 100
@@ -277,7 +277,7 @@ LOOP:
 // Tests BMT Hasher io.Writer interface is working correctly
 // even multiple short random write buffers
 func TestBMTWriterBuffers(t *testing.T) {
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 
 	for _, count := range counts {
 		t.Run(fmt.Sprintf("%d_segments", count), func(t *testing.T) {
@@ -410,7 +410,7 @@ func BenchmarkPool(t *testing.B) {
 // benchmarks simple sha3 hash on chunks
 func benchmarkSHA3(t *testing.B, n int) {
 	data := testutil.RandomBytes(1, n)
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	h := hasher()
 
 	t.ReportAllocs()
@@ -426,7 +426,7 @@ func benchmarkSHA3(t *testing.B, n int) {
 // the premise is that this is the minimum computation needed for a BMT
 // therefore this serves as a theoretical optimum for concurrent implementations
 func benchmarkBMTBaseline(t *testing.B, n int) {
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	hashSize := hasher().Size()
 	data := testutil.RandomBytes(1, hashSize)
 
@@ -453,7 +453,7 @@ func benchmarkBMTBaseline(t *testing.B, n int) {
 // benchmarks BMT Hasher
 func benchmarkBMT(t *testing.B, n int) {
 	data := testutil.RandomBytes(1, n)
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	pool := NewTreePool(hasher, segmentCount, PoolSize)
 	bmt := New(pool)
 
@@ -467,7 +467,7 @@ func benchmarkBMT(t *testing.B, n int) {
 // benchmarks BMT hasher with asynchronous concurrent segment/section writes
 func benchmarkBMTAsync(t *testing.B, n int, wh whenHash, double bool) {
 	data := testutil.RandomBytes(1, n)
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	pool := NewTreePool(hasher, segmentCount, PoolSize)
 	bmt := New(pool).NewAsyncWriter(double)
 	idxs, segments := splitAndShuffle(bmt.SectionSize(), data)
@@ -485,7 +485,7 @@ func benchmarkBMTAsync(t *testing.B, n int, wh whenHash, double bool) {
 // benchmarks 100 concurrent bmt hashes with pool capacity
 func benchmarkPool(t *testing.B, poolsize, n int) {
 	data := testutil.RandomBytes(1, n)
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	pool := NewTreePool(hasher, segmentCount, poolsize)
 	cycles := 100
 
@@ -508,7 +508,7 @@ func benchmarkPool(t *testing.B, poolsize, n int) {
 // benchmarks the reference hasher
 func benchmarkRefHasher(t *testing.B, n int) {
 	data := testutil.RandomBytes(1, n)
-	hasher := sha3.NewKeccak256
+	hasher := sha3.NewLegacyKeccak256
 	rbmt := NewRefHasher(hasher, 128)
 
 	t.ReportAllocs()

swarm/network/stream/streamer_test.go

@@ -24,8 +24,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	p2ptest "github.com/ethereum/go-ethereum/p2p/testing"
+	"golang.org/x/crypto/sha3"
 )
 
 func TestStreamerSubscribe(t *testing.T) {

swarm/pss/pss.go

@@ -29,7 +29,6 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/p2p/enode"
@@ -40,6 +39,7 @@ import (
 	"github.com/ethereum/go-ethereum/swarm/pot"
 	"github.com/ethereum/go-ethereum/swarm/storage"
 	whisper "github.com/ethereum/go-ethereum/whisper/whisperv5"
+	"golang.org/x/crypto/sha3"
 )
 
 const (
@@ -187,7 +187,7 @@ func NewPss(k *network.Kademlia, params *PssParams) (*Pss, error) {
 
 		hashPool: sync.Pool{
 			New: func() interface{} {
-				return sha3.NewKeccak256()
+				return sha3.NewLegacyKeccak256()
 			},
 		},
 	}

swarm/storage/chunker_test.go

@@ -24,8 +24,8 @@ import (
 	"io"
 	"testing"
 
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/swarm/testutil"
+	"golang.org/x/crypto/sha3"
 )
 
 /*
@@ -142,7 +142,7 @@ func TestSha3ForCorrectness(t *testing.T) {
 
 	io.LimitReader(bytes.NewReader(input[8:]), int64(size))
 
-	rawSha3 := sha3.NewKeccak256()
+	rawSha3 := sha3.NewLegacyKeccak256()
 	rawSha3.Reset()
 	rawSha3.Write(input)
 	rawSha3Output := rawSha3.Sum(nil)

swarm/storage/encryption/encryption_test.go

@@ -22,13 +22,13 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/swarm/testutil"
+	"golang.org/x/crypto/sha3"
 )
 
 var expectedTransformedHex = "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"
 
-var hashFunc = sha3.NewKeccak256
+var hashFunc = sha3.NewLegacyKeccak256
 var testKey Key
 
 func init() {

swarm/storage/hasherstore.go

@@ -21,9 +21,9 @@ import (
 	"fmt"
 	"sync/atomic"
 
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	ch "github.com/ethereum/go-ethereum/swarm/chunk"
 	"github.com/ethereum/go-ethereum/swarm/storage/encryption"
+	"golang.org/x/crypto/sha3"
 )
 
 type hasherStore struct {
@@ -232,11 +232,11 @@ func (h *hasherStore) decrypt(chunkData ChunkData, key encryption.Key) ([]byte,
 }
 
 func (h *hasherStore) newSpanEncryption(key encryption.Key) encryption.Encryption {
-	return encryption.New(key, 0, uint32(ch.DefaultSize/h.refSize), sha3.NewKeccak256)
+	return encryption.New(key, 0, uint32(ch.DefaultSize/h.refSize), sha3.NewLegacyKeccak256)
 }
 
 func (h *hasherStore) newDataEncryption(key encryption.Key) encryption.Encryption {
-	return encryption.New(key, int(ch.DefaultSize), 0, sha3.NewKeccak256)
+	return encryption.New(key, int(ch.DefaultSize), 0, sha3.NewLegacyKeccak256)
 }
 
 func (h *hasherStore) storeChunk(ctx context.Context, chunk *chunk) {

swarm/storage/types.go

@@ -26,9 +26,9 @@ import (
 	"io"
 
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/swarm/bmt"
 	ch "github.com/ethereum/go-ethereum/swarm/chunk"
+	"golang.org/x/crypto/sha3"
 )
 
 const MaxPO = 16
@@ -75,10 +75,10 @@ func MakeHashFunc(hash string) SwarmHasher {
 	case "SHA256":
 		return func() SwarmHash { return &HashWithLength{crypto.SHA256.New()} }
 	case "SHA3":
-		return func() SwarmHash { return &HashWithLength{sha3.NewKeccak256()} }
+		return func() SwarmHash { return &HashWithLength{sha3.NewLegacyKeccak256()} }
 	case "BMT":
 		return func() SwarmHash {
-			hasher := sha3.NewKeccak256
+			hasher := sha3.NewLegacyKeccak256
 			hasherSize := hasher().Size()
 			segmentCount := ch.DefaultSize / hasherSize
 			pool := bmt.NewTreePool(hasher, segmentCount, bmt.PoolSize)

tests/state_test_util.go

@@ -31,10 +31,10 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
+	"golang.org/x/crypto/sha3"
 )
 
 // StateTest checks transaction processing without block context.
@@ -248,7 +248,7 @@ func (tx *stTransaction) toMessage(ps stPostState) (core.Message, error) {
 }
 
 func rlpHash(x interface{}) (h common.Hash) {
-	hw := sha3.NewKeccak256()
+	hw := sha3.NewLegacyKeccak256()
 	rlp.Encode(hw, x)
 	hw.Sum(h[:0])
 	return h

trie/hasher.go

@@ -21,8 +21,8 @@ import (
 	"sync"
 
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"github.com/ethereum/go-ethereum/rlp"
+	"golang.org/x/crypto/sha3"
 )
 
 type hasher struct {
@@ -57,7 +57,7 @@ var hasherPool = sync.Pool{
 	New: func() interface{} {
 		return &hasher{
 			tmp: make(sliceBuffer, 0, 550), // cap is as large as a full fullNode.
-			sha: sha3.NewKeccak256().(keccakState),
+			sha: sha3.NewLegacyKeccak256().(keccakState),
 		}
 	},
 }

crypto/sha3/doc.go → vendor/golang.org/x/crypto/sha3/doc.go

@@ -43,7 +43,7 @@
 // is then "full" and the permutation is applied to "empty" it. This process is
 // repeated until all the input has been "absorbed". The input is then padded.
 // The digest is "squeezed" from the sponge in the same way, except that output
-// output is copied out instead of input being XORed in.
+// is copied out instead of input being XORed in.
 //
 // A sponge is parameterized by its generic security strength, which is equal
 // to half its capacity; capacity + rate is equal to the permutation's width.
@@ -63,4 +63,4 @@
 // They produce output of the same length, with the same security strengths
 // against all attacks. This means, in particular, that SHA3-256 only has
 // 128-bit collision resistance, because its output length is 32 bytes.
-package sha3
+package sha3 // import "golang.org/x/crypto/sha3"

crypto/sha3/hashes.go → vendor/golang.org/x/crypto/sha3/hashes.go

@@ -12,31 +12,57 @@ import (
 	"hash"
 )
 
-// NewKeccak256 creates a new Keccak-256 hash.
-func NewKeccak256() hash.Hash { return &state{rate: 136, outputLen: 32, dsbyte: 0x01} }
-
-// NewKeccak512 creates a new Keccak-512 hash.
-func NewKeccak512() hash.Hash { return &state{rate: 72, outputLen: 64, dsbyte: 0x01} }
-
 // New224 creates a new SHA3-224 hash.
 // Its generic security strength is 224 bits against preimage attacks,
 // and 112 bits against collision attacks.
-func New224() hash.Hash { return &state{rate: 144, outputLen: 28, dsbyte: 0x06} }
+func New224() hash.Hash {
+	if h := new224Asm(); h != nil {
+		return h
+	}
+	return &state{rate: 144, outputLen: 28, dsbyte: 0x06}
+}
 
 // New256 creates a new SHA3-256 hash.
 // Its generic security strength is 256 bits against preimage attacks,
 // and 128 bits against collision attacks.
-func New256() hash.Hash { return &state{rate: 136, outputLen: 32, dsbyte: 0x06} }
+func New256() hash.Hash {
+	if h := new256Asm(); h != nil {
+		return h
+	}
+	return &state{rate: 136, outputLen: 32, dsbyte: 0x06}
+}
 
 // New384 creates a new SHA3-384 hash.
 // Its generic security strength is 384 bits against preimage attacks,
 // and 192 bits against collision attacks.
-func New384() hash.Hash { return &state{rate: 104, outputLen: 48, dsbyte: 0x06} }
+func New384() hash.Hash {
+	if h := new384Asm(); h != nil {
+		return h
+	}
+	return &state{rate: 104, outputLen: 48, dsbyte: 0x06}
+}
 
 // New512 creates a new SHA3-512 hash.
 // Its generic security strength is 512 bits against preimage attacks,
 // and 256 bits against collision attacks.
-func New512() hash.Hash { return &state{rate: 72, outputLen: 64, dsbyte: 0x06} }
+func New512() hash.Hash {
+	if h := new512Asm(); h != nil {
+		return h
+	}
+	return &state{rate: 72, outputLen: 64, dsbyte: 0x06}
+}
+
+// NewLegacyKeccak256 creates a new Keccak-256 hash.
+//
+// Only use this function if you require compatibility with an existing cryptosystem
+// that uses non-standard padding. All other users should use New256 instead.
+func NewLegacyKeccak256() hash.Hash { return &state{rate: 136, outputLen: 32, dsbyte: 0x01} }
+
+// NewLegacyKeccak512 creates a new Keccak-512 hash.
+//
+// Only use this function if you require compatibility with an existing cryptosystem
+// that uses non-standard padding. All other users should use New512 instead.
+func NewLegacyKeccak512() hash.Hash { return &state{rate: 72, outputLen: 64, dsbyte: 0x01} }
 
 // Sum224 returns the SHA3-224 digest of the data.
 func Sum224(data []byte) (digest [28]byte) {

vendor/golang.org/x/crypto/sha3/hashes_generic.go

+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//+build gccgo appengine !s390x
+
+package sha3
+
+import (
+	"hash"
+)
+
+// new224Asm returns an assembly implementation of SHA3-224 if available,
+// otherwise it returns nil.
+func new224Asm() hash.Hash { return nil }
+
+// new256Asm returns an assembly implementation of SHA3-256 if available,
+// otherwise it returns nil.
+func new256Asm() hash.Hash { return nil }
+
+// new384Asm returns an assembly implementation of SHA3-384 if available,
+// otherwise it returns nil.
+func new384Asm() hash.Hash { return nil }
+
+// new512Asm returns an assembly implementation of SHA3-512 if available,
+// otherwise it returns nil.
+func new512Asm() hash.Hash { return nil }

crypto/sha3/keccakf_amd64.go → vendor/golang.org/x/crypto/sha3/keccakf_amd64.go

@@ -10,4 +10,4 @@ package sha3
 
 //go:noescape
 
-func keccakF1600(state *[25]uint64)
+func keccakF1600(a *[25]uint64)

vendor/golang.org/x/crypto/sha3/sha3_s390x.go

+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//+build !gccgo,!appengine
+
+package sha3
+
+// This file contains code for using the 'compute intermediate
+// message digest' (KIMD) and 'compute last message digest' (KLMD)
+// instructions to compute SHA-3 and SHAKE hashes on IBM Z.
+
+import (
+	"hash"
+)
+
+// codes represent 7-bit KIMD/KLMD function codes as defined in
+// the Principles of Operation.
+type code uint64
+
+const (
+	// function codes for KIMD/KLMD
+	sha3_224  code = 32
+	sha3_256       = 33
+	sha3_384       = 34
+	sha3_512       = 35
+	shake_128      = 36
+	shake_256      = 37
+	nopad          = 0x100
+)
+
+// hasMSA6 reports whether the machine supports the SHA-3 and SHAKE function
+// codes, as defined in message-security-assist extension 6.
+func hasMSA6() bool
+
+// hasAsm caches the result of hasMSA6 (which might be expensive to call).
+var hasAsm = hasMSA6()
+
+// kimd is a wrapper for the 'compute intermediate message digest' instruction.
+// src must be a multiple of the rate for the given function code.
+//go:noescape
+func kimd(function code, chain *[200]byte, src []byte)
+
+// klmd is a wrapper for the 'compute last message digest' instruction.
+// src padding is handled by the instruction.
+//go:noescape
+func klmd(function code, chain *[200]byte, dst, src []byte)
+
+type asmState struct {
+	a         [200]byte       // 1600 bit state
+	buf       []byte          // care must be taken to ensure cap(buf) is a multiple of rate
+	rate      int             // equivalent to block size
+	storage   [3072]byte      // underlying storage for buf
+	outputLen int             // output length if fixed, 0 if not
+	function  code            // KIMD/KLMD function code
+	state     spongeDirection // whether the sponge is absorbing or squeezing
+}
+
+func newAsmState(function code) *asmState {
+	var s asmState
+	s.function = function
+	switch function {
+	case sha3_224:
+		s.rate = 144
+		s.outputLen = 28
+	case sha3_256:
+		s.rate = 136
+		s.outputLen = 32
+	case sha3_384:
+		s.rate = 104
+		s.outputLen = 48
+	case sha3_512:
+		s.rate = 72
+		s.outputLen = 64
+	case shake_128:
+		s.rate = 168
+	case shake_256:
+		s.rate = 136
+	default:
+		panic("sha3: unrecognized function code")
+	}
+
+	// limit s.buf size to a multiple of s.rate
+	s.resetBuf()
+	return &s
+}
+
+func (s *asmState) clone() *asmState {
+	c := *s
+	c.buf = c.storage[:len(s.buf):cap(s.buf)]
+	return &c
+}
+
+// copyIntoBuf copies b into buf. It will panic if there is not enough space to
+// store all of b.
+func (s *asmState) copyIntoBuf(b []byte) {
+	bufLen := len(s.buf)
+	s.buf = s.buf[:len(s.buf)+len(b)]
+	copy(s.buf[bufLen:], b)
+}
+
+// resetBuf points buf at storage, sets the length to 0 and sets cap to be a
+// multiple of the rate.
+func (s *asmState) resetBuf() {
+	max := (cap(s.storage) / s.rate) * s.rate
+	s.buf = s.storage[:0:max]
+}
+
+// Write (via the embedded io.Writer interface) adds more data to the running hash.
+// It never returns an error.
+func (s *asmState) Write(b []byte) (int, error) {
+	if s.state != spongeAbsorbing {
+		panic("sha3: write to sponge after read")
+	}
+	length := len(b)
+	for len(b) > 0 {
+		if len(s.buf) == 0 && len(b) >= cap(s.buf) {
+			// Hash the data directly and push any remaining bytes
+			// into the buffer.
+			remainder := len(s.buf) % s.rate
+			kimd(s.function, &s.a, b[:len(b)-remainder])
+			if remainder != 0 {
+				s.copyIntoBuf(b[len(b)-remainder:])
+			}
+			return length, nil
+		}
+
+		if len(s.buf) == cap(s.buf) {
+			// flush the buffer
+			kimd(s.function, &s.a, s.buf)
+			s.buf = s.buf[:0]
+		}
+
+		// copy as much as we can into the buffer
+		n := len(b)
+		if len(b) > cap(s.buf)-len(s.buf) {
+			n = cap(s.buf) - len(s.buf)
+		}
+		s.copyIntoBuf(b[:n])
+		b = b[n:]
+	}
+	return length, nil
+}
+
+// Read squeezes an arbitrary number of bytes from the sponge.
+func (s *asmState) Read(out []byte) (n int, err error) {
+	n = len(out)
+
+	// need to pad if we were absorbing
+	if s.state == spongeAbsorbing {
+		s.state = spongeSqueezing
+
+		// write hash directly into out if possible
+		if len(out)%s.rate == 0 {
+			klmd(s.function, &s.a, out, s.buf) // len(out) may be 0
+			s.buf = s.buf[:0]
+			return
+		}
+
+		// write hash into buffer
+		max := cap(s.buf)
+		if max > len(out) {
+			max = (len(out)/s.rate)*s.rate + s.rate
+		}
+		klmd(s.function, &s.a, s.buf[:max], s.buf)
+		s.buf = s.buf[:max]
+	}
+
+	for len(out) > 0 {
+		// flush the buffer
+		if len(s.buf) != 0 {
+			c := copy(out, s.buf)
+			out = out[c:]
+			s.buf = s.buf[c:]
+			continue
+		}
+
+		// write hash directly into out if possible
+		if len(out)%s.rate == 0 {
+			klmd(s.function|nopad, &s.a, out, nil)
+			return
+		}
+
+		// write hash into buffer
+		s.resetBuf()
+		if cap(s.buf) > len(out) {
+			s.buf = s.buf[:(len(out)/s.rate)*s.rate+s.rate]
+		}
+		klmd(s.function|nopad, &s.a, s.buf, nil)
+	}
+	return
+}
+
+// Sum appends the current hash to b and returns the resulting slice.
+// It does not change the underlying hash state.
+func (s *asmState) Sum(b []byte) []byte {
+	if s.outputLen == 0 {
+		panic("sha3: cannot call Sum on SHAKE functions")
+	}
+
+	// Copy the state to preserve the original.
+	a := s.a
+
+	// Hash the buffer. Note that we don't clear it because we
+	// aren't updating the state.
+	klmd(s.function, &a, nil, s.buf)
+	return append(b, a[:s.outputLen]...)
+}
+
+// Reset resets the Hash to its initial state.
+func (s *asmState) Reset() {
+	for i := range s.a {
+		s.a[i] = 0
+	}
+	s.resetBuf()
+	s.state = spongeAbsorbing
+}
+
+// Size returns the number of bytes Sum will return.
+func (s *asmState) Size() int {
+	return s.outputLen
+}
+
+// BlockSize returns the hash's underlying block size.
+// The Write method must be able to accept any amount
+// of data, but it may operate more efficiently if all writes
+// are a multiple of the block size.
+func (s *asmState) BlockSize() int {
+	return s.rate
+}
+
+// Clone returns a copy of the ShakeHash in its current state.
+func (s *asmState) Clone() ShakeHash {
+	return s.clone()
+}
+
+// new224Asm returns an assembly implementation of SHA3-224 if available,
+// otherwise it returns nil.
+func new224Asm() hash.Hash {
+	if hasAsm {
+		return newAsmState(sha3_224)
+	}
+	return nil
+}
+
+// new256Asm returns an assembly implementation of SHA3-256 if available,
+// otherwise it returns nil.
+func new256Asm() hash.Hash {
+	if hasAsm {
+		return newAsmState(sha3_256)
+	}
+	return nil
+}
+
+// new384Asm returns an assembly implementation of SHA3-384 if available,
+// otherwise it returns nil.
+func new384Asm() hash.Hash {
+	if hasAsm {
+		return newAsmState(sha3_384)
+	}
+	return nil
+}
+
+// new512Asm returns an assembly implementation of SHA3-512 if available,
+// otherwise it returns nil.
+func new512Asm() hash.Hash {
+	if hasAsm {
+		return newAsmState(sha3_512)
+	}
+	return nil
+}
+
+// newShake128Asm returns an assembly implementation of SHAKE-128 if available,
+// otherwise it returns nil.
+func newShake128Asm() ShakeHash {
+	if hasAsm {
+		return newAsmState(shake_128)
+	}
+	return nil
+}
+
+// newShake256Asm returns an assembly implementation of SHAKE-256 if available,
+// otherwise it returns nil.
+func newShake256Asm() ShakeHash {
+	if hasAsm {
+		return newAsmState(shake_256)
+	}
+	return nil
+}

vendor/golang.org/x/crypto/sha3/sha3_s390x.s

+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//+build !gccgo,!appengine
+
+#include "textflag.h"
+
+TEXT ·hasMSA6(SB), NOSPLIT, $16-1
+	MOVD $0, R0          // KIMD-Query function code
+	MOVD $tmp-16(SP), R1 // parameter block
+	XC   $16, (R1), (R1) // clear the parameter block
+	WORD $0xB93E0002     // KIMD --, --
+	WORD $0x91FC1004     // TM 4(R1), 0xFC (test bits [32-37])
+	BVS  yes
+
+no:
+	MOVB $0, ret+0(FP)
+	RET
+
+yes:
+	MOVB $1, ret+0(FP)
+	RET
+
+// func kimd(function code, params *[200]byte, src []byte)
+TEXT ·kimd(SB), NOFRAME|NOSPLIT, $0-40
+	MOVD function+0(FP), R0
+	MOVD params+8(FP), R1
+	LMG  src+16(FP), R2, R3 // R2=base, R3=len
+
+continue:
+	WORD $0xB93E0002 // KIMD --, R2
+	BVS  continue    // continue if interrupted
+	MOVD $0, R0      // reset R0 for pre-go1.8 compilers
+	RET
+
+// func klmd(function code, params *[200]byte, dst, src []byte)
+TEXT ·klmd(SB), NOFRAME|NOSPLIT, $0-64
+	// TODO: SHAKE support
+	MOVD function+0(FP), R0
+	MOVD params+8(FP), R1
+	LMG  dst+16(FP), R2, R3 // R2=base, R3=len
+	LMG  src+40(FP), R4, R5 // R4=base, R5=len
+
+continue:
+	WORD $0xB93F0024 // KLMD R2, R4
+	BVS  continue    // continue if interrupted
+	MOVD $0, R0      // reset R0 for pre-go1.8 compilers
+	RET

crypto/sha3/shake.go → vendor/golang.org/x/crypto/sha3/shake.go

@@ -38,12 +38,22 @@ func (d *state) Clone() ShakeHash {
 // NewShake128 creates a new SHAKE128 variable-output-length ShakeHash.
 // Its generic security strength is 128 bits against all attacks if at
 // least 32 bytes of its output are used.
-func NewShake128() ShakeHash { return &state{rate: 168, dsbyte: 0x1f} }
+func NewShake128() ShakeHash {
+	if h := newShake128Asm(); h != nil {
+		return h
+	}
+	return &state{rate: 168, dsbyte: 0x1f}
+}
 
-// NewShake256 creates a new SHAKE128 variable-output-length ShakeHash.
+// NewShake256 creates a new SHAKE256 variable-output-length ShakeHash.
 // Its generic security strength is 256 bits against all attacks if
 // at least 64 bytes of its output are used.
-func NewShake256() ShakeHash { return &state{rate: 136, dsbyte: 0x1f} }
+func NewShake256() ShakeHash {
+	if h := newShake256Asm(); h != nil {
+		return h
+	}
+	return &state{rate: 136, dsbyte: 0x1f}
+}
 
 // ShakeSum128 writes an arbitrary-length digest of data into hash.
 func ShakeSum128(hash, data []byte) {

vendor/golang.org/x/crypto/sha3/shake_generic.go

+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//+build gccgo appengine !s390x
+
+package sha3
+
+// newShake128Asm returns an assembly implementation of SHAKE-128 if available,
+// otherwise it returns nil.
+func newShake128Asm() ShakeHash {
+	return nil
+}
+
+// newShake256Asm returns an assembly implementation of SHAKE-256 if available,
+// otherwise it returns nil.
+func newShake256Asm() ShakeHash {
+	return nil
+}

vendor/vendor.json

@@ -706,6 +706,12 @@
 			"revision": "6a293f2d4b14b8e6d3f0539e383f6d0d30fce3fd",
 			"revisionTime": "2017-09-25T11:22:06Z"
 		},
+		{
+			"checksumSHA1": "hUsBzxJ8KTL4v0vpPT/mqvdJ46s=",
+			"path": "golang.org/x/crypto/sha3",
+			"revision": "ff983b9c42bc9fbf91556e191cc8efb585c16908",
+			"revisionTime": "2018-07-25T11:53:45Z"
+		},
 		{
 			"checksumSHA1": "Wi44TcpIOXdojyVWkvyOBnBKIS4=",
 			"path": "golang.org/x/crypto/ssh",