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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
package jose
import (
"crypto/ecdsa"
"crypto/ed25519"
"crypto/elliptic"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"io/ioutil"
"math/big"
"os"
"testing"
"github.com/smallstep/assert"
"github.com/stretchr/testify/require"
)
func TestGenerateJWK(t *testing.T) {
tests := []struct {
kty, crv, alg, use, kid string
size int
expectedAlg string
expectedSize int
expectedType interface{}
ok bool
}{
{"EC", "", "", "", "", 0, "ES256", 256, &ecdsa.PrivateKey{}, true},
{"EC", "P-256", "", "sig", "", 0, "ES256", 256, &ecdsa.PrivateKey{}, true},
{"EC", "P-384", "", "sig", "a-kid", 0, "ES384", 384, &ecdsa.PrivateKey{}, true},
{"EC", "P-521", "ES521", "sig", "a-kid", 0, "ES521", 521, &ecdsa.PrivateKey{}, true},
{"EC", "P-256", "", "enc", "a-kid", 0, "ECDH-ES", 256, &ecdsa.PrivateKey{}, true},
{"EC", "P-256", "ECDH-ES+A128KW", "enc", "a-kid", 0, "ECDH-ES+A128KW", 256, &ecdsa.PrivateKey{}, true},
{"EC", "P-256", "ECDH-ES+A192KW", "enc", "a-kid", 0, "ECDH-ES+A192KW", 256, &ecdsa.PrivateKey{}, true},
{"EC", "P-256", "ECDH-ES+A256KW", "enc", "a-kid", 0, "ECDH-ES+A256KW", 256, &ecdsa.PrivateKey{}, true},
{"RSA", "", "", "", "", 0, "RS256", 2048, &rsa.PrivateKey{}, true},
{"RSA", "", "", "", "", 4096, "RS256", 4096, &rsa.PrivateKey{}, true},
{"RSA", "", "RS384", "sig", "", 1024, "RS384", 1024, &rsa.PrivateKey{}, true},
{"RSA", "", "RS521", "sig", "a-kid", 1024, "RS521", 1024, &rsa.PrivateKey{}, true},
{"RSA", "", "", "enc", "a-kid", 1024, "RSA-OAEP-256", 1024, &rsa.PrivateKey{}, true},
{"RSA", "", "RSA-OAEP-256", "enc", "a-kid", 1024, "RSA-OAEP-256", 1024, &rsa.PrivateKey{}, true},
{"RSA", "", "RSA1_5", "enc", "a-kid", 1024, "RSA1_5", 1024, &rsa.PrivateKey{}, true},
{"RSA", "", "RSA-OAEP", "enc", "a-kid", 1024, "RSA-OAEP", 1024, &rsa.PrivateKey{}, true},
{"OKP", "", "", "", "", 0, "EdDSA", 64, ed25519.PrivateKey{}, true},
{"OKP", "", "", "", "sig", 0, "EdDSA", 64, ed25519.PrivateKey{}, true},
{"OKP", "", "", "EdDSA", "sig", 0, "EdDSA", 64, ed25519.PrivateKey{}, true},
{"oct", "", "", "", "", 0, "HS256", 32, []byte{}, true},
{"oct", "", "", "sig", "", 0, "HS256", 32, []byte{}, true},
{"oct", "", "HS384", "sig", "a-kid", 16, "HS384", 16, []byte{}, true},
{"oct", "", "HS521", "sig", "a-kid", 64, "HS521", 64, []byte{}, true},
{"oct", "", "", "enc", "a-kid", 64, "A256GCMKW", 64, []byte{}, true},
{"oct", "", "dir", "enc", "a-kid", 0, "dir", 32, []byte{}, true},
{"oct", "", "A128KW", "enc", "a-kid", 0, "A128KW", 32, []byte{}, true},
{"oct", "", "A192KW", "enc", "a-kid", 0, "A192KW", 32, []byte{}, true},
{"oct", "", "A256KW", "enc", "a-kid", 0, "A256KW", 32, []byte{}, true},
{"oct", "", "A128GCMKW", "enc", "a-kid", 0, "A128GCMKW", 32, []byte{}, true},
{"oct", "", "A192GCMKW", "enc", "a-kid", 0, "A192GCMKW", 32, []byte{}, true},
{"oct", "", "A256GCMKW", "enc", "a-kid", 0, "A256GCMKW", 32, []byte{}, true},
}
for _, tc := range tests {
jwk, err := GenerateJWK(tc.kty, tc.crv, tc.alg, tc.use, tc.kid, tc.size)
if !tc.ok {
assert.Error(t, err)
assert.Nil(t, jwk)
continue
}
assert.NoError(t, err)
assert.Equals(t, tc.kid, jwk.KeyID)
assert.Equals(t, tc.expectedAlg, jwk.Algorithm)
assert.Type(t, tc.expectedType, jwk.Key)
switch key := jwk.Key.(type) {
case *ecdsa.PrivateKey:
switch tc.expectedSize {
case 256:
assert.Equals(t, elliptic.P256(), key.Curve)
case 384:
assert.Equals(t, elliptic.P384(), key.Curve)
case 521:
assert.Equals(t, elliptic.P521(), key.Curve)
default:
t.Errorf("unexpected size %d", tc.expectedSize)
}
case *rsa.PrivateKey:
assert.Equals(t, tc.expectedSize, key.N.BitLen())
case ed25519.PrivateKey:
assert.Equals(t, tc.expectedSize, len(key))
case []byte:
assert.Equals(t, tc.expectedSize, len(key))
default:
t.Errorf("unexpected key type %T", key)
}
}
}
func TestKeyUsageForCert(t *testing.T) {
tests := []struct {
Cert *x509.Certificate
ExpectUse string
ExpectErr error
}{
{
Cert: &x509.Certificate{
KeyUsage: x509.KeyUsageDigitalSignature,
},
ExpectUse: jwksUsageSig,
},
{
Cert: &x509.Certificate{
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageContentCommitment,
},
ExpectUse: jwksUsageSig,
},
{
Cert: &x509.Certificate{
KeyUsage: x509.KeyUsageDataEncipherment | x509.KeyUsageKeyAgreement,
},
ExpectUse: jwksUsageEnc,
},
{
Cert: &x509.Certificate{
KeyUsage: x509.KeyUsageDataEncipherment,
},
ExpectUse: jwksUsageEnc,
},
{
Cert: &x509.Certificate{},
ExpectErr: errNoCertKeyUsage,
},
{
Cert: &x509.Certificate{
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageDataEncipherment,
},
ExpectErr: errAmbiguousCertKeyUsage,
},
}
for _, tt := range tests {
use, err := keyUsageForCert(tt.Cert)
if tt.ExpectErr != nil {
require.Equal(t, tt.ExpectErr, err)
} else {
require.Equal(t, tt.ExpectUse, use)
}
}
}
func TestGenerateJWKFromPEMSubtle(t *testing.T) {
tests := []struct {
Description string
KeyUsage x509.KeyUsage
Subtle bool
ExpectErr error
ExpectSig string
}{
{
Description: "single key usage without subtle",
KeyUsage: x509.KeyUsageDigitalSignature,
ExpectSig: jwksUsageSig,
},
{
Description: "single key usage with subtle",
KeyUsage: x509.KeyUsageDigitalSignature,
Subtle: true,
},
{
Description: "multiple key usage without subtle",
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment,
ExpectErr: errAmbiguousCertKeyUsage,
},
{
Description: "multiple key usage with subtle",
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment,
Subtle: true,
},
}
for _, tt := range tests {
t.Run(tt.Description, func(t *testing.T) {
f, cleanup := tempFile(t)
defer cleanup()
err := pem.Encode(f, &pem.Block{
Type: "CERTIFICATE",
Bytes: newCert(t, tt.KeyUsage),
})
assert.NoError(t, err)
jwk, err := GenerateJWKFromPEM(f.Name(), tt.Subtle)
if tt.ExpectErr != nil {
assert.Equals(t, tt.ExpectErr, err)
return
}
require.NoError(t, err)
require.Equal(t, tt.ExpectSig, jwk.Use)
require.Equal(t, ES256, jwk.Algorithm)
require.Equal(t, 1, len(jwk.Certificates))
})
}
}
func newCert(t *testing.T, keyUsage x509.KeyUsage) []byte {
key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
assert.NoError(t, err)
tmpl := x509.Certificate{
SerialNumber: big.NewInt(1),
KeyUsage: keyUsage,
}
cert, err := x509.CreateCertificate(rand.Reader, &tmpl, &tmpl, key.Public(), key)
assert.NoError(t, err)
return cert
}
func tempFile(t *testing.T) (_ *os.File, cleanup func()) {
f, err := ioutil.TempFile("" /* use default tmp dir */, "jose-generate-test")
assert.NoError(t, err)
return f, func() {
f.Close()
os.Remove(f.Name())
}
}
|
