1
2
3
4
5 package sign
6
7 import (
8 "bytes"
9 "crypto/rand"
10 "encoding/hex"
11 "testing"
12 )
13
14 var testSignedMessage, _ = hex.DecodeString("26a0a47f733d02ddb74589b6cbd6f64a7dab1947db79395a1a9e00e4c902c0f185b119897b89b248d16bab4ea781b5a3798d25c2984aec833dddab57e0891e0d68656c6c6f20776f726c64")
15 var testMessage = testSignedMessage[Overhead:]
16 var testPublicKey [32]byte
17 var testPrivateKey = [64]byte{
18 0x98, 0x3c, 0x6a, 0xa6, 0x21, 0xcc, 0xbb, 0xb2, 0xa7, 0xe8, 0x97, 0x94, 0xde, 0x5f, 0xf8, 0x11,
19 0x8a, 0xf3, 0x33, 0x1a, 0x03, 0x5c, 0x43, 0x99, 0x03, 0x13, 0x2d, 0xd7, 0xb4, 0xc4, 0x8b, 0xb0,
20 0xf6, 0x33, 0x20, 0xa3, 0x34, 0x8b, 0x7b, 0xe2, 0xfe, 0xb4, 0xe7, 0x3a, 0x54, 0x08, 0x2d, 0xd7,
21 0x0c, 0xb7, 0xc0, 0xe3, 0xbf, 0x62, 0x6c, 0x55, 0xf0, 0x33, 0x28, 0x52, 0xf8, 0x48, 0x7d, 0xfd,
22 }
23
24 func init() {
25 copy(testPublicKey[:], testPrivateKey[32:])
26 }
27
28 func TestSign(t *testing.T) {
29 signedMessage := Sign(nil, testMessage, &testPrivateKey)
30 if !bytes.Equal(signedMessage, testSignedMessage) {
31 t.Fatalf("signed message did not match, got\n%x\n, expected\n%x", signedMessage, testSignedMessage)
32 }
33 }
34
35 func TestOpen(t *testing.T) {
36 message, ok := Open(nil, testSignedMessage, &testPublicKey)
37 if !ok {
38 t.Fatalf("valid signed message not successfully verified")
39 }
40 if !bytes.Equal(message, testMessage) {
41 t.Fatalf("message did not match, got\n%x\n, expected\n%x", message, testMessage)
42 }
43 _, ok = Open(nil, testSignedMessage[1:], &testPublicKey)
44 if ok {
45 t.Fatalf("invalid signed message successfully verified")
46 }
47
48 badMessage := make([]byte, len(testSignedMessage))
49 copy(badMessage, testSignedMessage)
50 badMessage[5] ^= 1
51 if _, ok := Open(nil, badMessage, &testPublicKey); ok {
52 t.Fatalf("Open succeeded with a corrupt message")
53 }
54
55 var badPublicKey [32]byte
56 copy(badPublicKey[:], testPublicKey[:])
57 badPublicKey[5] ^= 1
58 if _, ok := Open(nil, testSignedMessage, &badPublicKey); ok {
59 t.Fatalf("Open succeeded with a corrupt public key")
60 }
61 }
62
63 func TestGenerateSignOpen(t *testing.T) {
64 publicKey, privateKey, _ := GenerateKey(rand.Reader)
65 signedMessage := Sign(nil, testMessage, privateKey)
66 message, ok := Open(nil, signedMessage, publicKey)
67 if !ok {
68 t.Fatalf("failed to verify signed message")
69 }
70
71 if !bytes.Equal(message, testMessage) {
72 t.Fatalf("verified message does not match signed messge, got\n%x\n, expected\n%x", message, testMessage)
73 }
74 }
75
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