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
|
// Copyright 2013 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.
package extra25519
import (
"bytes"
"crypto/rand"
"testing"
"code.google.com/p/go.crypto/curve25519"
"github.com/agl/ed25519"
)
func TestCurve25519Conversion(t *testing.T) {
public, private, _ := ed25519.GenerateKey(rand.Reader)
var curve25519Public, curve25519Public2, curve25519Private [32]byte
PrivateKeyToCurve25519(&curve25519Private, private)
curve25519.ScalarBaseMult(&curve25519Public, &curve25519Private)
if !PublicKeyToCurve25519(&curve25519Public2, public) {
t.Fatalf("PublicKeyToCurve25519 failed")
}
if !bytes.Equal(curve25519Public[:], curve25519Public2[:]) {
t.Errorf("Values didn't match: curve25519 produced %x, conversion produced %x", curve25519Public[:], curve25519Public2[:])
}
}
func TestElligator(t *testing.T) {
var publicKey, publicKey2, publicKey3, representative, privateKey [32]byte
for i := 0; i < 1000; i++ {
rand.Reader.Read(privateKey[:])
if !ScalarBaseMult(&publicKey, &representative, &privateKey) {
continue
}
RepresentativeToPublicKey(&publicKey2, &representative)
if !bytes.Equal(publicKey[:], publicKey2[:]) {
t.Fatal("The resulting public key doesn't match the initial one.")
}
curve25519.ScalarBaseMult(&publicKey3, &privateKey)
if !bytes.Equal(publicKey[:], publicKey3[:]) {
t.Fatal("The public key doesn't match the value that curve25519 produced.")
}
}
}
func BenchmarkKeyGeneration(b *testing.B) {
var publicKey, representative, privateKey [32]byte
// Find the private key that results in a point that's in the image of the map.
for {
rand.Reader.Read(privateKey[:])
if ScalarBaseMult(&publicKey, &representative, &privateKey) {
break
}
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
ScalarBaseMult(&publicKey, &representative, &privateKey);
}
}
func BenchmarkMap(b *testing.B) {
var publicKey, representative [32]byte
rand.Reader.Read(representative[:])
b.ResetTimer()
for i := 0; i < b.N; i++ {
RepresentativeToPublicKey(&publicKey, &representative);
}
}
|
