1 // Copyright 2012 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
15 var stressFlag
= flag
.Bool("stress", false, "run slow stress tests")
17 var testData
= []struct {
21 []byte("Hello world!"),
22 []byte("this is 32-byte key for Poly1305"),
23 []byte{0xa6, 0xf7, 0x45, 0x00, 0x8f, 0x81, 0xc9, 0x16, 0xa2, 0x0d, 0xcc, 0x74, 0xee, 0xf2, 0xb2, 0xf0},
27 []byte("this is 32-byte key for Poly1305"),
28 []byte{0x49, 0xec, 0x78, 0x09, 0x0e, 0x48, 0x1e, 0xc6, 0xc2, 0x6b, 0x33, 0xb9, 0x1c, 0xcc, 0x03, 0x07},
32 []byte("this is 32-byte key for Poly1305"),
33 []byte{0xda, 0x84, 0xbc, 0xab, 0x02, 0x67, 0x6c, 0x38, 0xcd, 0xb0, 0x15, 0x60, 0x42, 0x74, 0xc2, 0xaa},
41 // This test triggers an edge-case. See https://go-review.googlesource.com/#/c/30101/.
42 []byte{0x81, 0xd8, 0xb2, 0xe4, 0x6a, 0x25, 0x21, 0x3b, 0x58, 0xfe, 0xe4, 0x21, 0x3a, 0x2a, 0x28, 0xe9, 0x21, 0xc1, 0x2a, 0x96, 0x32, 0x51, 0x6d, 0x3b, 0x73, 0x27, 0x27, 0x27, 0xbe, 0xcf, 0x21, 0x29},
43 []byte{0x3b, 0x3a, 0x29, 0xe9, 0x3b, 0x21, 0x3a, 0x5c, 0x5c, 0x3b, 0x3b, 0x05, 0x3a, 0x3a, 0x8c, 0x0d},
44 []byte{0x6d, 0xc1, 0x8b, 0x8c, 0x34, 0x4c, 0xd7, 0x99, 0x27, 0x11, 0x8b, 0xbe, 0x84, 0xb7, 0xf3, 0x14},
47 // This test generates a result of (2^130-1) % (2^130-5).
49 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
50 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
51 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
53 []byte{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
54 []byte{4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
57 // This test generates a result of (2^130-6) % (2^130-5).
59 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
60 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
61 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
63 []byte{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
64 []byte{0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
67 // This test generates a result of (2^130-5) % (2^130-5).
69 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
70 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
71 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
73 []byte{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
74 []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
78 func testSum(t
*testing
.T
, unaligned
bool) {
82 for i
, v
:= range testData
{
89 if !bytes
.Equal(out
[:], v
.correct
) {
90 t
.Errorf("%d: expected %x, got %x", i
, v
.correct
, out
[:])
95 func TestBurnin(t
*testing
.T
) {
96 // This test can be used to sanity-check significant changes. It can
97 // take about many minutes to run, even on fast machines. It's disabled
100 t
.Skip("skipping without -stress")
110 for i
:= range input
{
114 for i
:= uint64(0); i
< 1e10
; i
++ {
115 Sum(&output
, input
[:], &key
)
116 copy(key
[0:], output
[:])
117 copy(key
[16:], output
[:])
118 copy(input
[:], output
[:])
119 copy(input
[16:], output
[:])
122 const expected
= "5e3b866aea0b636d240c83c428f84bfa"
123 if got
:= hex
.EncodeToString(output
[:]); got
!= expected
{
124 t
.Errorf("expected %s, got %s", expected
, got
)
128 func TestSum(t
*testing
.T
) { testSum(t
, false) }
129 func TestSumUnaligned(t
*testing
.T
) { testSum(t
, true) }
131 func benchmark(b
*testing
.B
, size
int, unaligned
bool) {
134 in
:= make([]byte, size
)
136 in
= unalignBytes(in
)
138 b
.SetBytes(int64(len(in
)))
140 for i
:= 0; i
< b
.N
; i
++ {
145 func Benchmark64(b
*testing
.B
) { benchmark(b
, 64, false) }
146 func Benchmark1K(b
*testing
.B
) { benchmark(b
, 1024, false) }
147 func Benchmark64Unaligned(b
*testing
.B
) { benchmark(b
, 64, true) }
148 func Benchmark1KUnaligned(b
*testing
.B
) { benchmark(b
, 1024, true) }
150 func unalignBytes(in
[]byte) []byte {
151 out
:= make([]byte, len(in
)+1)
152 if uintptr(unsafe
.Pointer(&out
[0]))&(unsafe
.Alignof(uint32(0))-1) == 0 {