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godep&x/crypto: updated multihash and moved to x/crypto for blowfish

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This commit is contained in:
Henry 2015-03-01 00:49:44 +01:00
parent 6cc6a80039
commit 84262be070
20 changed files with 458 additions and 337 deletions
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22
Godeps/Godeps.json generated
View File

@ -14,16 +14,6 @@
"Comment": "null-15",
"Rev": "35bc42037350f0078e3c974c6ea690f1926603ab"
},
{
"ImportPath": "code.google.com/p/go.crypto/blowfish",
"Comment": "null-236",
"Rev": "69e2a90ed92d03812364aeb947b7068dc42e561e"
},
{
"ImportPath": "code.google.com/p/go.crypto/sha3",
"Comment": "null-236",
"Rev": "69e2a90ed92d03812364aeb947b7068dc42e561e"
},
{
"ImportPath": "code.google.com/p/gogoprotobuf/io",
"Rev": "6c980277330804e94257ac7ef70a3adbe1641059"
@ -188,8 +178,8 @@
},
{
"ImportPath": "github.com/jbenet/go-multihash",
"Comment": "0.1.0-33-g4e09420",
"Rev": "4e09420ceb2db37a5fbb149821b9e63d88d47218"
"Comment": "0.1.0-36-g87e53a9",
"Rev": "87e53a9d2875a18a7863b351d22f912545e6b3a3"
},
{
"ImportPath": "github.com/jbenet/go-peerstream",
@ -235,6 +225,14 @@
"ImportPath": "github.com/syndtr/gosnappy/snappy",
"Rev": "ce8acff4829e0c2458a67ead32390ac0a381c862"
},
{
"ImportPath": "golang.org/x/crypto/blowfish",
"Rev": "1351f936d976c60a0a48d728281922cf63eafb8d"
},
{
"ImportPath": "golang.org/x/crypto/sha3",
"Rev": "1351f936d976c60a0a48d728281922cf63eafb8d"
},
{
"ImportPath": "golang.org/x/net/context",
"Rev": "b6fdb7d8a4ccefede406f8fe0f017fb58265054c"

249
Godeps/_workspace/src/code.google.com/p/go.crypto/sha3/sha3_test.go generated vendored
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@ -1,249 +0,0 @@
// 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 utterly useless 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 = "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 returning ShakeHash instances for
// testing the ShakeHash-specific interface.
var testShakes = map[string]func() ShakeHash{
"SHAKE128": NewShake128,
"SHAKE256": NewShake256,
}
// decodeHex converts an hex-encoded string into a raw byte string.
func decodeHex(s string) []byte {
b, err := hex.DecodeString(s)
if err != nil {
panic(err)
}
return b
}
// 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"`
}
}
// 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) {
// 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("%s", err)
}
// Do the KATs.
for functionName, kats := range katSet.Kats {
d := testDigests[functionName]()
t.Logf("%s", functionName)
for _, kat := range kats {
d.Reset()
in, err := hex.DecodeString(kat.Message)
if err != nil {
t.Errorf("%s", err)
}
d.Write(in[:kat.Length/8])
got := strings.ToUpper(hex.EncodeToString(d.Sum(nil)))
want := kat.Digest
if got != want {
t.Errorf("function=%s, length=%d\nmessage:\n %s\ngot:\n %s\nwanted:\n %s",
functionName, kat.Length, kat.Message, got, want)
t.Logf("wanted %+v", kat)
t.FailNow()
}
}
}
}
// TestUnalignedWrite tests that writing data in an arbitrary pattern with
// small input buffers.
func TestUnalignedWrite(t *testing.T) {
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, alg=%s\ngot %q, want %q", alg, got, want)
}
}
}
// Test that appending works when reallocation is necessary.
func TestAppend(t *testing.T) {
d := New224()
for capacity := 2; capacity < 64; 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)
}
}
}
// Test that appending works when no reallocation is necessary.
func TestAppendNoRealloc(t *testing.T) {
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("got %s, want %s", 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) {
for functionName, newShakeHash := range testShakes {
t.Logf("%s", functionName)
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("squeezing %d bytes one at a time failed", len(ref))
}
}
}
func TestReadSimulation(t *testing.T) {
d := NewShake256()
d.Write(nil)
dwr := make([]byte, 32)
d.Read(dwr)
}
// 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)
}
}
// benchmarkBulkHash tests the speed to hash a buffer of buflen.
func benchmarkBulkHash(b *testing.B, h hash.Hash, size int) {
b.StopTimer()
h.Reset()
data := sequentialBytes(size)
b.SetBytes(int64(size))
b.StartTimer()
var state []byte
for i := 0; i < b.N; i++ {
h.Write(data)
state = h.Sum(state[:0])
}
b.StopTimer()
h.Reset()
}
func BenchmarkSha3_512_MTU(b *testing.B) { benchmarkBulkHash(b, New512(), 1350) }
func BenchmarkSha3_384_MTU(b *testing.B) { benchmarkBulkHash(b, New384(), 1350) }
func BenchmarkSha3_256_MTU(b *testing.B) { benchmarkBulkHash(b, New256(), 1350) }
func BenchmarkSha3_224_MTU(b *testing.B) { benchmarkBulkHash(b, New224(), 1350) }
func BenchmarkShake256_MTU(b *testing.B) { benchmarkBulkHash(b, newHashShake256(), 1350) }
func BenchmarkShake128_MTU(b *testing.B) { benchmarkBulkHash(b, newHashShake128(), 1350) }
func BenchmarkSha3_512_1MiB(b *testing.B) { benchmarkBulkHash(b, New512(), 1<<20) }
func BenchmarkShake256_1MiB(b *testing.B) { benchmarkBulkHash(b, newHashShake256(), 1<<20) }

2
Godeps/_workspace/src/github.com/jbenet/go-multihash/Makefile generated vendored
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@ -7,5 +7,5 @@ go_test: go_deps
go test -race -cpu=5 -v ./...
go_deps:
go get code.google.com/p/go.crypto/sha3
go get golang.org/x/crypto/sha3
go get github.com/jbenet/go-base58

2
Godeps/_workspace/src/github.com/jbenet/go-multihash/sum.go generated vendored
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@ -7,7 +7,7 @@ import (
"errors"
"fmt"
sha3 "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.crypto/sha3"
sha3 "github.com/jbenet/go-ipfs/Godeps/_workspace/src/golang.org/x/crypto/sha3"
)
var ErrSumNotSupported = errors.New("Function not implemented. Complain to lib maintainer.")

0
Godeps/_workspace/src/code.google.com/p/go.crypto/blowfish/block.go → Godeps/_workspace/src/golang.org/x/crypto/blowfish/block.go generated vendored
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0
Godeps/_workspace/src/code.google.com/p/go.crypto/blowfish/blowfish_test.go → Godeps/_workspace/src/golang.org/x/crypto/blowfish/blowfish_test.go generated vendored
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0
Godeps/_workspace/src/code.google.com/p/go.crypto/blowfish/cipher.go → Godeps/_workspace/src/golang.org/x/crypto/blowfish/cipher.go generated vendored
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0
Godeps/_workspace/src/code.google.com/p/go.crypto/blowfish/const.go → Godeps/_workspace/src/golang.org/x/crypto/blowfish/const.go generated vendored
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42
Godeps/_workspace/src/code.google.com/p/go.crypto/sha3/doc.go → Godeps/_workspace/src/golang.org/x/crypto/sha3/doc.go generated vendored
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@ -12,7 +12,8 @@
// Guidance
//
// If you aren't sure what function you need, use SHAKE256 with at least 64
// bytes of output.
// bytes of output. The SHAKE instances are faster than the SHA3 instances;
// the latter have to allocate memory to conform to the hash.Hash interface.
//
// If you need a secret-key MAC (message authentication code), prepend the
// secret key to the input, hash with SHAKE256 and read at least 32 bytes of
@ -21,45 +22,42 @@
//
// Security strengths
//
// The SHA3-x functions have a security strength against preimage attacks of x
// bits. Since they only produce x bits of output, their collision-resistance
// is only x/2 bits.
// The SHA3-x (x equals 224, 256, 384, or 512) functions have a security
// strength against preimage attacks of x bits. Since they only produce "x"
// bits of output, their collision-resistance is only "x/2" bits.
//
// The SHAKE-x functions have a generic security strength of x bits against
// all attacks, provided that at least 2x bits of their output is used.
// Requesting more than 2x bits of output does not increase the collision-
// resistance of the SHAKE functions.
// The SHAKE-256 and -128 functions have a generic security strength of 256 and
// 128 bits against all attacks, provided that at least 2x bits of their output
// is used. Requesting more than 64 or 32 bytes of output, respectively, does
// not increase the collision-resistance of the SHAKE functions.
//
//
// The sponge construction
//
// A sponge builds a pseudo-random function from a pseudo-random permutation,
// by applying the permutation to a state of "rate + capacity" bytes, but
// hiding "capacity" of the bytes.
// A sponge builds a pseudo-random function from a public pseudo-random
// permutation, by applying the permutation to a state of "rate + capacity"
// bytes, but hiding "capacity" of the bytes.
//
// A sponge starts out with a zero state. To hash an input using a sponge, up
// to "rate" bytes of the input are XORed into the sponge's state. The sponge
// has thus been "filled up" and the permutation is applied. This process is
// 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 by the same method, except that
// output is copied out.
// The digest is "squeezed" from the sponge in the same way, except that output
// output 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.
//
// Since the KeccakF-1600 permutation is 1600 bits (200 bytes) wide, this means
// that security_strength == (1600 - bitrate) / 2.
// that the security strength of a sponge instance is equal to (1600 - bitrate) / 2.
//
//
// Recommendations, detailed
// Recommendations
//
// The SHAKE functions are recommended for most new uses. They can produce
// output of arbitrary length. SHAKE256, with an output length of at least
// 64 bytes, provides 256-bit security against all attacks.
//
// The Keccak team recommends SHAKE256 for most applications upgrading from
// SHA2-512. (NIST chose a much stronger, but much slower, sponge instance
// for SHA3-512.)
// 64 bytes, provides 256-bit security against all attacks. The Keccak team
// recommends it for most applications upgrading from SHA2-512. (NIST chose a
// much stronger, but much slower, sponge instance for SHA3-512.)
//
// The SHA-3 functions are "drop-in" replacements for the SHA-2 functions.
// They produce output of the same length, with the same security strengths

0
Godeps/_workspace/src/code.google.com/p/go.crypto/sha3/hashes.go → Godeps/_workspace/src/golang.org/x/crypto/sha3/hashes.go generated vendored
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0
Godeps/_workspace/src/code.google.com/p/go.crypto/sha3/keccakf.go → Godeps/_workspace/src/golang.org/x/crypto/sha3/keccakf.go generated vendored
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0
Godeps/_workspace/src/code.google.com/p/go.crypto/sha3/register.go → Godeps/_workspace/src/golang.org/x/crypto/sha3/register.go generated vendored
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67
Godeps/_workspace/src/code.google.com/p/go.crypto/sha3/sha3.go → Godeps/_workspace/src/golang.org/x/crypto/sha3/sha3.go generated vendored
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@ -4,10 +4,6 @@
package sha3
import (
"encoding/binary"
)
// spongeDirection indicates the direction bytes are flowing through the sponge.
type spongeDirection int
@ -30,25 +26,25 @@ type state struct {
buf []byte // points into storage
rate int // the number of bytes of state to use
// dsbyte contains the "domain separation" value and the first bit of
// the padding. In sections 6.1 and 6.2 of [1], the SHA-3 and SHAKE
// functions are defined with bits appended to the message: SHA-3
// functions have 01 and SHAKE functions have 1111. Because of the way
// that bits are numbered from the LSB upwards, that ends up as
// 00000010b and 00001111b, respectively. Then the padding rule from
// section 5.1 is applied to pad to a multiple of the rate, which
// involves adding a 1 bit, zero or more zero bits and then a final one
// bit. The first one bit from the padding is merged into the dsbyte
// value giving 00000110b (0x06) and 00011111b (0x1f), respectively.
//
// [1] http://csrc.nist.gov/publications/drafts/fips-202/fips_202_draft.pdf,
// dsbyte contains the "domain separation" bits and the first bit of
// the padding. Sections 6.1 and 6.2 of [1] separate the outputs of the
// SHA-3 and SHAKE functions by appending bitstrings to the message.
// Using a little-endian bit-ordering convention, these are "01" for SHA-3
// and "1111" for SHAKE, or 00000010b and 00001111b, respectively. Then the
// padding rule from section 5.1 is applied to pad the message to a multiple
// of the rate, which involves adding a "1" bit, zero or more "0" bits, and
// a final "1" bit. We merge the first "1" bit from the padding into dsbyte,
// giving 00000110b (0x06) and 00011111b (0x1f).
// [1] http://csrc.nist.gov/publications/drafts/fips-202/fips_202_draft.pdf
// "Draft FIPS 202: SHA-3 Standard: Permutation-Based Hash and
// Extendable-Output Functions (May 2014)"
dsbyte byte
storage [maxRate]byte
// Specific to SHA-3 and SHAKE.
fixedOutput bool // whether this is a fixed-ouput-length instance
outputLen int // the default output size in bytes
state spongeDirection // current direction of the sponge
state spongeDirection // whether the sponge is absorbing or squeezing
}
// BlockSize returns the rate of sponge underlying this hash function.
@ -79,35 +75,6 @@ func (d *state) clone() *state {
return &ret
}
// xorIn xors a buffer into the state, byte-swapping to
// little-endian as necessary; it returns the number of bytes
// copied, including any zeros appended to the bytestring.
func (d *state) xorIn(buf []byte) {
n := len(buf) / 8
for i := 0; i < n; i++ {
a := binary.LittleEndian.Uint64(buf)
d.a[i] ^= a
buf = buf[8:]
}
if len(buf) != 0 {
// XOR in the last partial ulint64.
a := uint64(0)
for i, v := range buf {
a |= uint64(v) << uint64(8*i)
}
d.a[n] ^= a
}
}
// copyOut copies ulint64s to a byte buffer.
func (d *state) copyOut(b []byte) {
for i := 0; len(b) >= 8; i++ {
binary.LittleEndian.PutUint64(b, d.a[i])
b = b[8:]
}
}
// permute applies the KeccakF-1600 permutation. It handles
// any input-output buffering.
func (d *state) permute() {
@ -115,7 +82,7 @@ func (d *state) permute() {
case spongeAbsorbing:
// If we're absorbing, we need to xor the input into the state
// before applying the permutation.
d.xorIn(d.buf)
xorIn(d, d.buf)
d.buf = d.storage[:0]
keccakF1600(&d.a)
case spongeSqueezing:
@ -123,7 +90,7 @@ func (d *state) permute() {
// copying more output.
keccakF1600(&d.a)
d.buf = d.storage[:d.rate]
d.copyOut(d.buf)
copyOut(d, d.buf)
}
}
@ -151,7 +118,7 @@ func (d *state) padAndPermute(dsbyte byte) {
d.permute()
d.state = spongeSqueezing
d.buf = d.storage[:d.rate]
d.copyOut(d.buf)
copyOut(d, d.buf)
}
// Write absorbs more data into the hash's state. It produces an error
@ -168,7 +135,7 @@ func (d *state) Write(p []byte) (written int, err error) {
for len(p) > 0 {
if len(d.buf) == 0 && len(p) >= d.rate {
// The fast path; absorb a full "rate" bytes of input and apply the permutation.
d.xorIn(p[:d.rate])
xorIn(d, p[:d.rate])
p = p[d.rate:]
keccakF1600(&d.a)
} else {

306
Godeps/_workspace/src/golang.org/x/crypto/sha3/sha3_test.go generated vendored Normal file
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@ -0,0 +1,306 @@
// 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,
}
// decodeHex converts a hex-encoded string into a raw byte string.
func decodeHex(s string) []byte {
b, err := hex.DecodeString(s)
if err != nil {
panic(err)
}
return b
}
// 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 < 64; 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)
}

0
Godeps/_workspace/src/code.google.com/p/go.crypto/sha3/shake.go → Godeps/_workspace/src/golang.org/x/crypto/sha3/shake.go generated vendored
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0
Godeps/_workspace/src/code.google.com/p/go.crypto/sha3/keccakKats.json.deflate → Godeps/_workspace/src/golang.org/x/crypto/sha3/testdata/keccakKats.json.deflate generated vendored
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16
Godeps/_workspace/src/golang.org/x/crypto/sha3/xor.go generated vendored Normal file
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@ -0,0 +1,16 @@
// Copyright 2015 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 !amd64,!386 appengine
package sha3
var (
xorIn = xorInGeneric
copyOut = copyOutGeneric
xorInUnaligned = xorInGeneric
copyOutUnaligned = copyOutGeneric
)
const xorImplementationUnaligned = "generic"

28
Godeps/_workspace/src/golang.org/x/crypto/sha3/xor_generic.go generated vendored Normal file
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@ -0,0 +1,28 @@
// Copyright 2015 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
import "encoding/binary"
// xorInGeneric xors the bytes in buf into the state; it
// makes no non-portable assumptions about memory layout
// or alignment.
func xorInGeneric(d *state, buf []byte) {
n := len(buf) / 8
for i := 0; i < n; i++ {
a := binary.LittleEndian.Uint64(buf)
d.a[i] ^= a
buf = buf[8:]
}
}
// copyOutGeneric copies ulint64s to a byte buffer.
func copyOutGeneric(d *state, b []byte) {
for i := 0; len(b) >= 8; i++ {
binary.LittleEndian.PutUint64(b, d.a[i])
b = b[8:]
}
}

58
Godeps/_workspace/src/golang.org/x/crypto/sha3/xor_unaligned.go generated vendored Normal file
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@ -0,0 +1,58 @@
// Copyright 2015 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 amd64 386
// +build !appengine
package sha3
import "unsafe"
func xorInUnaligned(d *state, buf []byte) {
bw := (*[maxRate / 8]uint64)(unsafe.Pointer(&buf[0]))
n := len(buf)
if n >= 72 {
d.a[0] ^= bw[0]
d.a[1] ^= bw[1]
d.a[2] ^= bw[2]
d.a[3] ^= bw[3]
d.a[4] ^= bw[4]
d.a[5] ^= bw[5]
d.a[6] ^= bw[6]
d.a[7] ^= bw[7]
d.a[8] ^= bw[8]
}
if n >= 104 {
d.a[9] ^= bw[9]
d.a[10] ^= bw[10]
d.a[11] ^= bw[11]
d.a[12] ^= bw[12]
}
if n >= 136 {
d.a[13] ^= bw[13]
d.a[14] ^= bw[14]
d.a[15] ^= bw[15]
d.a[16] ^= bw[16]
}
if n >= 144 {
d.a[17] ^= bw[17]
}
if n >= 168 {
d.a[18] ^= bw[18]
d.a[19] ^= bw[19]
d.a[20] ^= bw[20]
}
}
func copyOutUnaligned(d *state, buf []byte) {
ab := (*[maxRate]uint8)(unsafe.Pointer(&d.a[0]))
copy(buf, ab[:])
}
var (
xorIn = xorInUnaligned
copyOut = copyOutUnaligned
)
const xorImplementationUnaligned = "unaligned"

3
p2p/crypto/secio/al.go
View File

@ -13,8 +13,7 @@ import (
"crypto/sha512"
"hash"
bfish "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.crypto/blowfish"
bfish "github.com/jbenet/go-ipfs/Godeps/_workspace/src/golang.org/x/crypto/blowfish"
ci "github.com/jbenet/go-ipfs/p2p/crypto"
)