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
|
// Copyright 2018 Google LLC. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package x509ext_test
import (
"encoding/hex"
"encoding/pem"
"fmt"
"strings"
"testing"
"time"
"github.com/google/certificate-transparency-go/gossip/minimal/x509ext"
"github.com/google/certificate-transparency-go/tls"
"github.com/google/certificate-transparency-go/x509"
"github.com/google/certificate-transparency-go/x509/pkix"
ct "github.com/google/certificate-transparency-go"
)
var (
// pilotPubKeyPEM is the public key for Google's Pilot log.
pilotPubKeyPEM = []byte(`-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEfahLEimAoz2t01p3uMziiLOl/fHT
DM0YDOhBRuiBARsV4UvxG2LdNgoIGLrtCzWE0J5APC2em4JlvR8EEEFMoA==
-----END PUBLIC KEY-----`)
)
func TestSTHFromCert(t *testing.T) {
rawPubKey, _ := pem.Decode(pilotPubKeyPEM)
pubKey, _, _, err := ct.PublicKeyFromPEM(pilotPubKeyPEM)
if err != nil {
t.Fatalf("failed to decode test pubkey data: %v", err)
}
validSTH := x509ext.LogSTHInfo{
LogURL: []byte("http://ct.example.com/log"),
Version: 0,
TreeSize: 7834120,
Timestamp: 1519395540364,
SHA256RootHash: [...]byte{
0xfe, 0xc0, 0xed, 0xe1, 0xbe, 0xf1, 0xa2, 0x25, 0xc3, 0x72, 0xa6, 0x44, 0x1b, 0xa2, 0xd5, 0xdd, 0x3b, 0xbb, 0x9b, 0x7b, 0xa9, 0x79, 0xd1, 0xa7, 0x03, 0xe7, 0xfe, 0x81, 0x49, 0x75, 0x85, 0xfb,
},
TreeHeadSignature: ct.DigitallySigned{
Algorithm: tls.SignatureAndHashAlgorithm{Hash: tls.SHA256, Signature: tls.ECDSA},
Signature: dehex("220164e031604aa2a0b68887ba668cefb3e0046e455d6323c3df38b8d50108895d70220146199ee1d759a029d8b37ce8701d2ca47a387bad8ac8ef1cb84b77bc0820ed"),
},
}
sthData, err := tls.Marshal(validSTH)
if err != nil {
t.Fatalf("failed to marshal STH: %v", err)
}
var tests = []struct {
name string
cert x509.Certificate
wantErr string
}{
{
name: "ValidSTH",
cert: x509.Certificate{
NotBefore: time.Now(),
NotAfter: time.Now().Add(24 * time.Hour),
PublicKey: pubKey,
RawSubjectPublicKeyInfo: rawPubKey.Bytes,
Subject: pkix.Name{
CommonName: "Test STH holder",
},
Extensions: []pkix.Extension{
{Id: x509ext.OIDExtensionCTSTH, Critical: false, Value: sthData},
},
},
},
{
name: "MissingSTH",
cert: x509.Certificate{
NotBefore: time.Now(),
NotAfter: time.Now().Add(24 * time.Hour),
Subject: pkix.Name{
CommonName: "Test STH holder",
},
},
wantErr: "no STH extension found",
},
{
name: "TrailingData",
cert: x509.Certificate{
NotBefore: time.Now(),
NotAfter: time.Now().Add(24 * time.Hour),
Subject: pkix.Name{
CommonName: "Test STH holder",
},
Extensions: []pkix.Extension{
{Id: x509ext.OIDExtensionCTSTH, Critical: false, Value: append(sthData, 0xff)},
},
},
wantErr: "trailing data",
},
{
name: "InvalidSTH",
cert: x509.Certificate{
NotBefore: time.Now(),
NotAfter: time.Now().Add(24 * time.Hour),
Subject: pkix.Name{
CommonName: "Test STH holder",
},
Extensions: []pkix.Extension{
{Id: x509ext.OIDExtensionCTSTH, Critical: false, Value: []byte{0xff}},
},
},
wantErr: "failed to unmarshal",
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
got, err := x509ext.STHFromCert(&test.cert)
if err != nil {
if test.wantErr == "" {
t.Errorf("STHFromCert(%+v)=nil,%v; want _,nil", test.cert, err)
} else if !strings.Contains(err.Error(), test.wantErr) {
t.Errorf("STHFromCert(%+v)=nil,%v; want nil,err containing %q", test.cert, err, test.wantErr)
}
return
}
if test.wantErr != "" {
t.Errorf("STHFromCert(%+v)=_,nil; want nil,err containing %q", test.cert, test.wantErr)
}
t.Logf("retrieved STH %+v", got)
})
}
}
func dehex(h string) []byte {
d, err := hex.DecodeString(h)
if err != nil {
panic(fmt.Sprintf("hard-coded data %q failed to decode! %v", h, err))
}
return d
}
|
