-
Notifications
You must be signed in to change notification settings - Fork 0
/
pbkdf2_test.go
148 lines (136 loc) · 3.35 KB
/
pbkdf2_test.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
package pbkdf2
import (
"bytes"
"crypto/sha256"
"hash"
"testing"
"time"
"golang.org/x/crypto/pbkdf2"
)
type testVector struct {
password string
salt string
iter int
output []byte
}
// Test vectors from
// http://stackoverflow.com/questions/5130513/pbkdf2-hmac-sha2-test-vectors
var sha256TestVectors = []testVector{
{
"password",
"salt",
1,
[]byte{
0x12, 0x0f, 0xb6, 0xcf, 0xfc, 0xf8, 0xb3, 0x2c,
0x43, 0xe7, 0x22, 0x52, 0x56, 0xc4, 0xf8, 0x37,
0xa8, 0x65, 0x48, 0xc9,
},
},
{
"password",
"salt",
2,
[]byte{
0xae, 0x4d, 0x0c, 0x95, 0xaf, 0x6b, 0x46, 0xd3,
0x2d, 0x0a, 0xdf, 0xf9, 0x28, 0xf0, 0x6d, 0xd0,
0x2a, 0x30, 0x3f, 0x8e,
},
},
{
"password",
"salt",
4096,
[]byte{
0xc5, 0xe4, 0x78, 0xd5, 0x92, 0x88, 0xc8, 0x41,
0xaa, 0x53, 0x0d, 0xb6, 0x84, 0x5c, 0x4c, 0x8d,
0x96, 0x28, 0x93, 0xa0,
},
},
{
"passwordPASSWORDpassword",
"saltSALTsaltSALTsaltSALTsaltSALTsalt",
4096,
[]byte{
0x34, 0x8c, 0x89, 0xdb, 0xcb, 0xd3, 0x2b, 0x2f,
0x32, 0xd8, 0x14, 0xb8, 0x11, 0x6e, 0x84, 0xcf,
0x2b, 0x17, 0x34, 0x7e, 0xbc, 0x18, 0x00, 0x18,
0x1c,
},
},
{
"pass\000word",
"sa\000lt",
4096,
[]byte{
0x89, 0xb6, 0x9d, 0x05, 0x16, 0xf8, 0x29, 0x89,
0x3c, 0x69, 0x62, 0x26, 0x65, 0x0a, 0x86, 0x87,
},
},
}
func testHash(t *testing.T, h func() hash.Hash, hashName string, vectors []testVector) {
for i, v := range vectors {
o := Key([]byte(v.password), []byte(v.salt), v.iter, len(v.output))
if !bytes.Equal(o, v.output) {
t.Fatalf("%s #%d: expected %x, got %x", hashName, i, v.output, o)
}
}
}
func TestVectors(t *testing.T) {
testHash(t, sha256.New, "SHA256", sha256TestVectors)
}
func TestFuzz(t *testing.T) {
password := make([]byte, 32)
salt := make([]byte, 8)
for iters := 32; iters < 4096; iters *= 2 {
for keyLen := 32; keyLen < 4096; keyLen *= 2 {
want := pbkdf2.Key(password, salt, iters, keyLen, sha256.New)
got := Key(password, salt, iters, keyLen)
if !bytes.Equal(want, got) {
t.Fatalf("expected %x, got %x", want, got)
}
}
}
}
func Test100ms(t *testing.T) {
test := func(fn func(password, salt []byte, iter, keyLen int) []byte) int {
const iter = 4096
r := testing.Benchmark(func(b *testing.B) {
password := []byte("123456")
salt := make([]byte, 32)
for i := 0; i < b.N; i++ {
salt = fn(password, salt, iter, 32)
}
sink += salt[int(sink)%len(salt)]
})
const targ = 100 * time.Millisecond
return int(iter * (float64(targ) / float64(r.NsPerOp())))
}
asm := test(Key)
std := test(func(password, salt []byte, iter, keyLen int) []byte {
return pbkdf2.Key(password, salt, iter, keyLen, sha256.New)
})
t.Logf("std: %7d/100ms", std)
t.Logf("asm: %7d/100ms (%0.2fx)", asm, float64(asm)/float64(std))
if pbkdf2Asm && asm/2 < std {
t.Fatalf("expected asm >= %d, got %d", std*2, asm)
}
}
var sink uint8
func BenchmarkHMACSHA256(b *testing.B) {
const iter = 4096
password := make([]byte, sha256.Size)
salt := make([]byte, 8)
for i := 0; i < b.N; i++ {
password = Key(password, salt, iter, len(password))
}
sink += password[int(sink)%len(password)]
}
func BenchmarkHMACSHA256_Go(b *testing.B) {
const iter = 100_000
password := make([]byte, sha256.Size)
salt := make([]byte, 8)
for i := 0; i < b.N; i++ {
password = pbkdf2.Key(password, salt, iter, len(password), sha256.New)
}
sink += password[int(sink)%len(password)]
}