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
|
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package crypto
import (
"bytes"
"crypto/ecdsa"
"reflect"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/common/math"
)
var (
testmsg = hexutil.MustDecode("0xce0677bb30baa8cf067c88db9811f4333d131bf8bcf12fe7065d211dce971008")
testsig = hexutil.MustDecode("0x90f27b8b488db00b00606796d2987f6a5f59ae62ea05effe84fef5b8b0e549984a691139ad57a3f0b906637673aa2f63d1f55cb1a69199d4009eea23ceaddc9301")
testpubkey = hexutil.MustDecode("0x04e32df42865e97135acfb65f3bae71bdc86f4d49150ad6a440b6f15878109880a0a2b2667f7e725ceea70c673093bf67663e0312623c8e091b13cf2c0f11ef652")
testpubkeyc = hexutil.MustDecode("0x02e32df42865e97135acfb65f3bae71bdc86f4d49150ad6a440b6f15878109880a")
)
func TestEcrecover(t *testing.T) {
pubkey, err := Ecrecover(testmsg, testsig)
if err != nil {
t.Fatalf("recover error: %s", err)
}
if !bytes.Equal(pubkey, testpubkey) {
t.Errorf("pubkey mismatch: want: %x have: %x", testpubkey, pubkey)
}
}
func TestVerifySignature(t *testing.T) {
sig := testsig[:len(testsig)-1] // remove recovery id
if !VerifySignature(testpubkey, testmsg, sig) {
t.Errorf("can't verify signature with uncompressed key")
}
if !VerifySignature(testpubkeyc, testmsg, sig) {
t.Errorf("can't verify signature with compressed key")
}
if VerifySignature(nil, testmsg, sig) {
t.Errorf("signature valid with no key")
}
if VerifySignature(testpubkey, nil, sig) {
t.Errorf("signature valid with no message")
}
if VerifySignature(testpubkey, testmsg, nil) {
t.Errorf("nil signature valid")
}
if VerifySignature(testpubkey, testmsg, append(common.CopyBytes(sig), 1, 2, 3)) {
t.Errorf("signature valid with extra bytes at the end")
}
if VerifySignature(testpubkey, testmsg, sig[:len(sig)-2]) {
t.Errorf("signature valid even though it's incomplete")
}
wrongkey := common.CopyBytes(testpubkey)
wrongkey[10]++
if VerifySignature(wrongkey, testmsg, sig) {
t.Errorf("signature valid with with wrong public key")
}
}
func TestDecompressPubkey(t *testing.T) {
key, err := DecompressPubkey(testpubkeyc)
if err != nil {
t.Fatal(err)
}
if uncompressed := FromECDSAPub(key); !bytes.Equal(uncompressed, testpubkey) {
t.Errorf("wrong public key result: got %x, want %x", uncompressed, testpubkey)
}
if _, err := DecompressPubkey(nil); err == nil {
t.Errorf("no error for nil pubkey")
}
if _, err := DecompressPubkey(testpubkeyc[:5]); err == nil {
t.Errorf("no error for incomplete pubkey")
}
if _, err := DecompressPubkey(append(common.CopyBytes(testpubkeyc), 1, 2, 3)); err == nil {
t.Errorf("no error for pubkey with extra bytes at the end")
}
}
func TestCompressPubkey(t *testing.T) {
key := &ecdsa.PublicKey{
Curve: S256(),
X: math.MustParseBig256("0xe32df42865e97135acfb65f3bae71bdc86f4d49150ad6a440b6f15878109880a"),
Y: math.MustParseBig256("0x0a2b2667f7e725ceea70c673093bf67663e0312623c8e091b13cf2c0f11ef652"),
}
compressed := CompressPubkey(key)
if !bytes.Equal(compressed, testpubkeyc) {
t.Errorf("wrong public key result: got %x, want %x", compressed, testpubkeyc)
}
}
func TestPubkeyRandom(t *testing.T) {
const runs = 200
for i := 0; i < runs; i++ {
key, err := GenerateKey()
if err != nil {
t.Fatalf("iteration %d: %v", i, err)
}
pubkey2, err := DecompressPubkey(CompressPubkey(&key.PublicKey))
if err != nil {
t.Fatalf("iteration %d: %v", i, err)
}
if !reflect.DeepEqual(key.PublicKey, *pubkey2) {
t.Fatalf("iteration %d: keys not equal", i)
}
}
}
func BenchmarkEcrecoverSignature(b *testing.B) {
for i := 0; i < b.N; i++ {
if _, err := Ecrecover(testmsg, testsig); err != nil {
b.Fatal("ecrecover error", err)
}
}
}
func BenchmarkVerifySignature(b *testing.B) {
sig := testsig[:len(testsig)-1] // remove recovery id
for i := 0; i < b.N; i++ {
if !VerifySignature(testpubkey, testmsg, sig) {
b.Fatal("verify error")
}
}
}
func BenchmarkDecompressPubkey(b *testing.B) {
for i := 0; i < b.N; i++ {
if _, err := DecompressPubkey(testpubkeyc); err != nil {
b.Fatal(err)
}
}
}
|
