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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
|
// 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.
// Note: Can run these tests against the non-BoringCrypto
// version of the code by using "CGO_ENABLED=0 go test".
package rsa
import (
"bytes"
"crypto"
"crypto/rand"
"crypto/sha1"
"crypto/sha256"
"encoding/asn1"
"encoding/hex"
"reflect"
"runtime"
"runtime/debug"
"sync"
"sync/atomic"
"testing"
"unsafe"
)
func TestBoringASN1Marshal(t *testing.T) {
k, err := GenerateKey(rand.Reader, 128)
if err != nil {
t.Fatal(err)
}
// This used to fail, because of the unexported 'boring' field.
// Now the compiler hides it [sic].
_, err = asn1.Marshal(k.PublicKey)
if err != nil {
t.Fatal(err)
}
}
func TestBoringDeepEqual(t *testing.T) {
k, err := GenerateKey(rand.Reader, 128)
if err != nil {
t.Fatal(err)
}
k.boring = nil // probably nil already but just in case
k2 := *k
k2.boring = unsafe.Pointer(k) // anything not nil, for this test
if !reflect.DeepEqual(k, &k2) {
// compiler should be hiding the boring field from reflection
t.Fatalf("DeepEqual compared boring fields")
}
}
func TestBoringVerify(t *testing.T) {
// This changed behavior and broke golang.org/x/crypto/openpgp.
// Go accepts signatures without leading 0 padding, while BoringCrypto does not.
// So the Go wrappers must adapt.
key := &PublicKey{
N: bigFromHex("c4fdf7b40a5477f206e6ee278eaef888ca73bf9128a9eef9f2f1ddb8b7b71a4c07cfa241f028a04edb405e4d916c61d6beabc333813dc7b484d2b3c52ee233c6a79b1eea4e9cc51596ba9cd5ac5aeb9df62d86ea051055b79d03f8a4fa9f38386f5bd17529138f3325d46801514ea9047977e0829ed728e68636802796801be1"),
E: 65537,
}
hash := fromHex("019c5571724fb5d0e47a4260c940e9803ba05a44")
paddedHash := fromHex("3021300906052b0e03021a05000414019c5571724fb5d0e47a4260c940e9803ba05a44")
// signature is one byte shorter than key.N.
sig := fromHex("5edfbeb6a73e7225ad3cc52724e2872e04260d7daf0d693c170d8c4b243b8767bc7785763533febc62ec2600c30603c433c095453ede59ff2fcabeb84ce32e0ed9d5cf15ffcbc816202b64370d4d77c1e9077d74e94a16fb4fa2e5bec23a56d7a73cf275f91691ae1801a976fcde09e981a2f6327ac27ea1fecf3185df0d56")
err := VerifyPKCS1v15(key, 0, paddedHash, sig)
if err != nil {
t.Errorf("raw: %v", err)
}
err = VerifyPKCS1v15(key, crypto.SHA1, hash, sig)
if err != nil {
t.Errorf("sha1: %v", err)
}
}
// The goal for BoringCrypto is to be indistinguishable from standard Go crypto.
// Test that when routines are passed a not-actually-random reader, they
// consume and potentially expose the expected bits from that reader.
// This is awful but it makes sure that golden tests based on deterministic
// "randomness" sources are unchanged by BoringCrypto.
//
// For decryption and signing, r is only used for blinding,
// so we can and do still use BoringCrypto with its own true
// randomness source, but we must be careful to consume
// from r as if we'd used it for blinding.
type testRandReader struct {
t *testing.T
offset int64
seq [8]byte
data []byte
buf [32]byte
}
func (r *testRandReader) Read(b []byte) (int, error) {
if len(r.data) == 0 && len(b) > 0 {
for i := range r.seq {
r.seq[i]++
if r.seq[i] != 0 {
break
}
}
r.buf = sha256.Sum256(r.seq[:])
r.data = r.buf[:]
}
n := copy(b, r.data)
r.data = r.data[n:]
r.offset += int64(n)
return n, nil
}
func (r *testRandReader) checkOffset(offset int64) {
if r.offset != offset {
r.t.Fatalf("r.offset = %d, expected %d", r.offset, offset)
}
}
func testRand(t *testing.T) *testRandReader {
return &testRandReader{t: t}
}
var testKeyCache struct {
once sync.Once
k *PrivateKey
}
func testKey(t *testing.T) *PrivateKey {
testKeyCache.once.Do(func() {
// Note: Key must be 2048 bits in order to trigger
// BoringCrypto code paths.
k, err := GenerateKey(testRand(t), 2048)
if err != nil {
t.Fatal(err)
}
testKeyCache.k = k
})
return testKeyCache.k
}
func bytesFromHex(t *testing.T, x string) []byte {
b, err := hex.DecodeString(x)
if err != nil {
t.Fatal(err)
}
return b
}
func TestBoringRandGenerateKey(t *testing.T) {
r := testRand(t)
k, err := GenerateKey(r, 2048) // 2048 is smallest size BoringCrypto might kick in for
if err != nil {
t.Fatal(err)
}
n := bigFromHex("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")
if k.N.Cmp(n) != 0 {
t.Fatalf("GenerateKey: wrong N\nhave %x\nwant %x", k.N, n)
}
r.checkOffset(35200)
// Non-Boring GenerateKey always sets CRTValues to a non-nil (possibly empty) slice.
if k.Precomputed.CRTValues == nil {
t.Fatalf("GenerateKey: Precomputed.CRTValues = nil")
}
}
func TestBoringRandGenerateMultiPrimeKey(t *testing.T) {
r := testRand(t)
k, err := GenerateMultiPrimeKey(r, 2, 2048)
if err != nil {
t.Fatal(err)
}
n := bigFromHex("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")
if k.N.Cmp(n) != 0 {
t.Fatalf("GenerateKey: wrong N\nhave %x\nwant %x", k.N, n)
}
r.checkOffset(35200)
}
func TestBoringRandEncryptPKCS1v15(t *testing.T) {
r := testRand(t)
k := testKey(t)
enc, err := EncryptPKCS1v15(r, &k.PublicKey, []byte("hello world"))
if err != nil {
t.Fatal(err)
}
want := bytesFromHex(t, "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")
if !bytes.Equal(enc, want) {
t.Fatalf("EncryptPKCS1v15: wrong enc\nhave %x\nwant %x", enc, want)
}
r.checkOffset(242)
}
func TestBoringRandDecryptPKCS1v15(t *testing.T) {
r := testRand(t)
k := testKey(t)
enc := bytesFromHex(t, "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")
dec, err := DecryptPKCS1v15(r, k, enc)
if err != nil {
t.Fatal(err)
}
want := []byte("hello world")
if !bytes.Equal(dec, want) {
t.Fatalf("DecryptPKCS1v15: wrong dec\nhave %x\nwant %x", dec, want)
}
r.checkOffset(256)
}
func TestBoringRandDecryptPKCS1v15SessionKey(t *testing.T) {
r := testRand(t)
k := testKey(t)
enc := bytesFromHex(t, "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")
dec := make([]byte, 11)
err := DecryptPKCS1v15SessionKey(r, k, enc, dec)
if err != nil {
t.Fatal(err)
}
want := []byte("hello world")
if !bytes.Equal(dec, want) {
t.Fatalf("DecryptPKCS1v15SessionKey: wrong dec\nhave %x\nwant %x", dec, want)
}
r.checkOffset(256)
}
func TestBoringRandSignPKCS1v15(t *testing.T) {
r := testRand(t)
k := testKey(t)
sum := sha1.Sum([]byte("hello"))
sig, err := SignPKCS1v15(r, k, crypto.SHA1, sum[:])
if err != nil {
t.Fatal(err)
}
want := bytesFromHex(t, "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")
if !bytes.Equal(sig, want) {
t.Fatalf("SignPKCS1v15(hash=SHA1): wrong sig\nhave %x\nwant %x", sig, want)
}
sig, err = SignPKCS1v15(r, k, 0, sum[:])
if err != nil {
t.Fatal(err)
}
want = bytesFromHex(t, "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")
if !bytes.Equal(sig, want) {
t.Fatalf("SignPKCS1v15(hash=0): wrong sig\nhave %x\nwant %x", sig, want)
}
r.checkOffset(768)
}
func TestBoringRandSignPSS(t *testing.T) {
r := testRand(t)
k := testKey(t)
sum := sha1.Sum([]byte("hello"))
sig, err := SignPSS(r, k, crypto.SHA1, sum[:], nil)
if err != nil {
t.Fatal(err)
}
want := bytesFromHex(t, "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")
if !bytes.Equal(sig, want) {
t.Fatalf("SignPSS: wrong sig\nhave %x\nwant %x", sig, want)
}
r.checkOffset(490)
}
func TestBoringRandEncryptOAEP(t *testing.T) {
r := testRand(t)
k := testKey(t)
enc, err := EncryptOAEP(sha256.New(), r, &k.PublicKey, []byte("hello"), []byte("label"))
if err != nil {
t.Fatal(err)
}
want := bytesFromHex(t, "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")
if !bytes.Equal(enc, want) {
t.Fatalf("EncryptOAEP: wrong enc\nhave %x\nwant %x", enc, want)
}
r.checkOffset(32)
}
func TestBoringRandDecryptOAEP(t *testing.T) {
r := testRand(t)
k := testKey(t)
enc := bytesFromHex(t, "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")
dec, err := DecryptOAEP(sha256.New(), r, k, enc, []byte("label"))
if err != nil {
t.Fatal(err)
}
want := []byte("hello")
if !bytes.Equal(dec, want) {
t.Fatalf("DecryptOAEP: wrong dec\nhave %x\nwant %x", dec, want)
}
r.checkOffset(256)
}
func TestBoringFinalizers(t *testing.T) {
if runtime.GOOS == "nacl" {
// Times out on nacl (without BoringCrypto)
// but not clear why - probably consuming rand.Reader too quickly
// and being throttled. Also doesn't really matter.
t.Skip("skipping on nacl")
}
k := testKey(t)
// Run test with GOGC=10, to make bug more likely.
// Without the KeepAlives, the loop usually dies after
// about 30 iterations.
defer debug.SetGCPercent(debug.SetGCPercent(10))
for n := 0; n < 200; n++ {
// Clear the underlying BoringCrypto object.
atomic.StorePointer(&k.boring, nil)
// Race to create the underlying BoringCrypto object.
// The ones that lose the race are prime candidates for
// being GC'ed too early if the finalizers are not being
// used correctly.
var wg sync.WaitGroup
for i := 0; i < 10; i++ {
wg.Add(1)
go func() {
defer wg.Done()
sum := make([]byte, 32)
_, err := SignPKCS1v15(rand.Reader, k, crypto.SHA256, sum)
if err != nil {
panic(err) // usually caused by memory corruption, so hard stop
}
}()
}
wg.Wait()
}
}
|
