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
|
// Copyright 2021 The Sigstore Authors.
//
// 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 challenges
import (
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/rsa"
"crypto/sha256"
"testing"
"github.com/sigstore/sigstore/pkg/cryptoutils"
)
func failErr(t *testing.T, err error) {
if err != nil {
t.Fatal(err)
}
}
func TestCheckSignatureECDSA(t *testing.T) {
priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
failErr(t, err)
email := "test@gmail.com"
if err := CheckSignature(&priv.PublicKey, []byte("foo"), email); err == nil {
t.Fatal("check should have failed")
}
h := sha256.Sum256([]byte(email))
signature, err := priv.Sign(rand.Reader, h[:], crypto.SHA256)
failErr(t, err)
if err := CheckSignature(&priv.PublicKey, signature, email); err != nil {
t.Fatal(err)
}
// Nil key should fail
if err := CheckSignature(nil, signature, email); err == nil {
t.Error("nil public key should raise error")
}
// Try a bad email but "good" signature
if err := CheckSignature(&priv.PublicKey, signature, "bad@email.com"); err == nil {
t.Fatal("check should have failed")
}
}
func TestCheckSignatureRSA(t *testing.T) {
priv, err := rsa.GenerateKey(rand.Reader, 2048)
failErr(t, err)
email := "test@gmail.com"
if err := CheckSignature(&priv.PublicKey, []byte("foo"), email); err == nil {
t.Fatal("check should have failed")
}
h := sha256.Sum256([]byte(email))
signature, err := priv.Sign(rand.Reader, h[:], crypto.SHA256)
failErr(t, err)
if err := CheckSignature(&priv.PublicKey, signature, email); err != nil {
t.Fatal(err)
}
// Try a bad email but "good" signature
if err := CheckSignature(&priv.PublicKey, signature, "bad@email.com"); err == nil {
t.Fatal("check should have failed")
}
}
func TestParsePublicKey(t *testing.T) {
priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
failErr(t, err)
// succeeds with PEM-encoded key
pemKey, err := cryptoutils.MarshalPublicKeyToPEM(priv.Public())
failErr(t, err)
pubKey, err := ParsePublicKey(string(pemKey))
failErr(t, err)
if err := cryptoutils.EqualKeys(pubKey, priv.Public()); err != nil {
t.Fatalf("expected equal public keys")
}
// succeeds with DER-encoded key
derKey, err := cryptoutils.MarshalPublicKeyToDER(priv.Public())
failErr(t, err)
pubKey, err = ParsePublicKey(string(derKey))
failErr(t, err)
if err := cryptoutils.EqualKeys(pubKey, priv.Public()); err != nil {
t.Fatalf("expected equal public keys")
}
// fails with no public key
_, err = ParsePublicKey("")
if err == nil || err.Error() != "public key not provided" {
t.Fatalf("expected error parsing no public key, got %v", err)
}
// fails with invalid public key (private key)
pemPrivKey, err := cryptoutils.MarshalPrivateKeyToPEM(priv)
failErr(t, err)
_, err = ParsePublicKey(string(pemPrivKey))
if err == nil || err.Error() != "error parsing PEM or DER encoded public key" {
t.Fatalf("expected error parsing invalid public key, got %v", err)
}
}
|
