-
Notifications
You must be signed in to change notification settings - Fork 136
/
decaf_test.go
156 lines (138 loc) · 3.23 KB
/
decaf_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
149
150
151
152
153
154
155
156
package goldilocks_test
import (
"bytes"
"crypto/rand"
"encoding/hex"
"encoding/json"
"io/ioutil"
"os"
"testing"
"github.com/cloudflare/circl/ecc/goldilocks"
"github.com/cloudflare/circl/internal/test"
)
type testJSONFile struct {
Group string `json:"group"`
Version string `json:"version"`
Generator struct {
X string `json:"x"`
Y string `json:"y"`
T string `json:"t"`
Z string `json:"z"`
} `json:"generator"`
Vectors []struct {
K string `json:"k"`
KG string `json:"kG"`
KP string `json:"kP"`
} `json:"vectors"`
}
func (kat *testJSONFile) readFile(t *testing.T, fileName string) {
jsonFile, err := os.Open(fileName)
if err != nil {
t.Fatalf("File %v can not be opened. Error: %v", fileName, err)
}
defer jsonFile.Close()
input, _ := ioutil.ReadAll(jsonFile)
err = json.Unmarshal(input, &kat)
if err != nil {
t.Fatalf("File %v can not be loaded. Error: %v", fileName, err)
}
}
func verify(t *testing.T, i int, gotkG *goldilocks.Elt, wantEnckG []byte) {
var d goldilocks.Decaf
wantkG := &goldilocks.Elt{}
gotEnckG, err := gotkG.MarshalBinary()
got := err == nil && bytes.Equal(gotEnckG, wantEnckG)
want := true
if got != want {
test.ReportError(t, got, want, i)
}
err = wantkG.UnmarshalBinary(wantEnckG)
got = err == nil &&
d.IsValid(gotkG) &&
d.IsValid(wantkG) &&
gotkG.IsEqual(wantkG)
want = true
if got != want {
test.ReportError(t, got, want, i)
}
}
func TestDecafv1_1(t *testing.T) {
var kat testJSONFile
kat.readFile(t, "testdata/decafv1.1_vectors.json")
got := kat.Group
want := "decaf"
if got != want {
test.ReportError(t, got, want)
}
got = kat.Version
want = "v1.1"
if got != want {
test.ReportError(t, got, want)
}
var d goldilocks.Decaf
var scalar goldilocks.Scalar
var P goldilocks.Elt
for i := range kat.Vectors {
k, _ := hex.DecodeString(kat.Vectors[i].K)
wantEnckG, _ := hex.DecodeString(kat.Vectors[i].KG)
wantEnckP, _ := hex.DecodeString(kat.Vectors[i].KP)
scalar.FromBytes(k)
d.MulGen(&P, &scalar)
verify(t, i, &P, wantEnckG)
d.Mul(&P, &scalar, d.Generator())
verify(t, i, &P, wantEnckG)
d.Mul(&P, &scalar, &P)
verify(t, i, &P, wantEnckP)
}
}
func TestDecafRandom(t *testing.T) {
const testTimes = 1 << 10
var e goldilocks.Elt
var enc [goldilocks.DecafEncodingSize]byte
for i := 0; i < testTimes; i++ {
for found := false; !found; {
_, _ = rand.Read(enc[:])
err := e.UnmarshalBinary(enc[:])
found = err == nil
}
got, err := e.MarshalBinary()
want := enc[:]
if err != nil || !bytes.Equal(got, want) {
test.ReportError(t, got, want, enc)
}
}
}
func BenchmarkDecaf(b *testing.B) {
var d goldilocks.Decaf
var k, l goldilocks.Scalar
_, _ = rand.Read(k[:])
_, _ = rand.Read(l[:])
G := d.Generator()
P := d.Generator()
enc, _ := G.MarshalBinary()
b.Run("Add", func(b *testing.B) {
for i := 0; i < b.N; i++ {
d.Add(P, P, G)
}
})
b.Run("Mul", func(b *testing.B) {
for i := 0; i < b.N; i++ {
d.Mul(G, &k, G)
}
})
b.Run("MulGen", func(b *testing.B) {
for i := 0; i < b.N; i++ {
d.MulGen(P, &k)
}
})
b.Run("Marshal", func(b *testing.B) {
for i := 0; i < b.N; i++ {
_, _ = G.MarshalBinary()
}
})
b.Run("Unmarshal", func(b *testing.B) {
for i := 0; i < b.N; i++ {
_ = P.UnmarshalBinary(enc)
}
})
}