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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
package object
import (
"bytes"
"testing"
)
func Test_typeForSignature(t *testing.T) {
tests := []struct {
name string
b []byte
want signatureType
}{
{
name: "known signature format (PGP)",
b: []byte(`-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQTMqU0ycQ3f6g3PMoWMmmmF4LuV8QUCYGebVwAKCRCMmmmF4LuV
8VtyAP9LbuXAhtK6FQqOjKybBwlV70rLcXVP24ubDuz88VVwSgD+LuObsasWq6/U
TssDKHUR2taa53bQYjkZQBpvvwOrLgc=
=YQUf
-----END PGP SIGNATURE-----`),
want: signatureTypeOpenPGP,
},
{
name: "known signature format (SSH)",
b: []byte(`-----BEGIN SSH SIGNATURE-----
U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgij/EfHS8tCjolj5uEANXgKzFfp
0D7wOhjWVbYZH6KugAAAADZ2l0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5
AAAAQIYHMhSVV9L2xwJuV8eWMLjThya8yXgCHDzw3p01D19KirrabW0veiichPB5m+Ihtr
MKEQruIQWJb+8HVXwssA4=
-----END SSH SIGNATURE-----`),
want: signatureTypeSSH,
},
{
name: "known signature format (X509)",
b: []byte(`-----BEGIN CERTIFICATE-----
MIIDZjCCAk6gAwIBAgIJALZ9Z3Z9Z3Z9MA0GCSqGSIb3DQEBCwUAMIGIMQswCQYD
VQQGEwJTRTEOMAwGA1UECAwFVGV4YXMxDjAMBgNVBAcMBVRleGFzMQ4wDAYDVQQK
DAVUZXhhczEOMAwGA1UECwwFVGV4YXMxGDAWBgNVBAMMD1RleGFzIENlcnRpZmlj
YXRlMB4XDTE3MDUyNjE3MjY0MloXDTI3MDUyNDE3MjY0MlowgYgxCzAJBgNVBAYT
AlNFMQ4wDAYDVQQIDAVUZXhhczEOMAwGA1UEBwwFVGV4YXMxDjAMBgNVBAoMBVRl
eGFzMQ4wDAYDVQQLDAVUZXhhczEYMBYGA1UEAwwPVGV4YXMgQ2VydGlmaWNhdGUw
ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDQZ9Z3Z9Z3Z9Z3Z9Z3Z9Z3
-----END CERTIFICATE-----`),
want: signatureTypeX509,
},
{
name: "unknown signature format",
b: []byte(`-----BEGIN ARBITRARY SIGNATURE-----
U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgij/EfHS8tCjolj5uEANXgKzFfp
-----END UNKNOWN SIGNATURE-----`),
want: signatureTypeUnknown,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := typeForSignature(tt.b); got != tt.want {
t.Errorf("typeForSignature() = %v, want %v", got, tt.want)
}
})
}
}
func Test_parseSignedBytes(t *testing.T) {
tests := []struct {
name string
b []byte
wantSignature []byte
wantType signatureType
}{
{
name: "detects signature and type",
b: []byte(`signed tag
-----BEGIN PGP SIGNATURE-----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=VhHy
-----END PGP SIGNATURE-----`),
wantSignature: []byte(`-----BEGIN PGP SIGNATURE-----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=VhHy
-----END PGP SIGNATURE-----`),
wantType: signatureTypeOpenPGP,
},
{
name: "last signature for multiple signatures",
b: []byte(`signed tag
-----BEGIN PGP SIGNATURE-----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=VhHy
-----END PGP SIGNATURE-----
-----BEGIN SSH SIGNATURE-----
U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgij/EfHS8tCjolj5uEANXgKzFfp
0D7wOhjWVbYZH6KugAAAADZ2l0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5
AAAAQIYHMhSVV9L2xwJuV8eWMLjThya8yXgCHDzw3p01D19KirrabW0veiichPB5m+Ihtr
MKEQruIQWJb+8HVXwssA4=
-----END SSH SIGNATURE-----`),
wantSignature: []byte(`-----BEGIN SSH SIGNATURE-----
U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgij/EfHS8tCjolj5uEANXgKzFfp
0D7wOhjWVbYZH6KugAAAADZ2l0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5
AAAAQIYHMhSVV9L2xwJuV8eWMLjThya8yXgCHDzw3p01D19KirrabW0veiichPB5m+Ihtr
MKEQruIQWJb+8HVXwssA4=
-----END SSH SIGNATURE-----`),
wantType: signatureTypeSSH,
},
{
name: "signature with trailing data",
b: []byte(`An invalid
-----BEGIN SSH SIGNATURE-----
U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgij/EfHS8tCjolj5uEANXgKzFfp
0D7wOhjWVbYZH6KugAAAADZ2l0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5
AAAAQIYHMhSVV9L2xwJuV8eWMLjThya8yXgCHDzw3p01D19KirrabW0veiichPB5m+Ihtr
MKEQruIQWJb+8HVXwssA4=
-----END SSH SIGNATURE-----
signed tag`),
wantSignature: []byte(`-----BEGIN SSH SIGNATURE-----
U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgij/EfHS8tCjolj5uEANXgKzFfp
0D7wOhjWVbYZH6KugAAAADZ2l0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5
AAAAQIYHMhSVV9L2xwJuV8eWMLjThya8yXgCHDzw3p01D19KirrabW0veiichPB5m+Ihtr
MKEQruIQWJb+8HVXwssA4=
-----END SSH SIGNATURE-----
signed tag`),
wantType: signatureTypeSSH,
},
{
name: "data without signature",
b: []byte(`Some message`),
wantSignature: []byte(``),
wantType: signatureTypeUnknown,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
pos, st := parseSignedBytes(tt.b)
var signature []byte
if pos >= 0 {
signature = tt.b[pos:]
}
if !bytes.Equal(signature, tt.wantSignature) {
t.Errorf("parseSignedBytes() got = %s for pos = %v, want %s", signature, pos, tt.wantSignature)
}
if st != tt.wantType {
t.Errorf("parseSignedBytes() got1 = %v, want %v", st, tt.wantType)
}
})
}
}
func FuzzParseSignedBytes(f *testing.F) {
f.Fuzz(func(t *testing.T, input []byte) {
parseSignedBytes(input)
})
}
|
