summaryrefslogtreecommitdiffstats
path: root/vendor/github.com/rsc/letsencrypt/vendor/gopkg.in/square/go-jose.v1/symmetric_test.go
blob: 67f535e3b5a4c1456815bedd80991990cfbd7983 (plain)
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
/*-
 * Copyright 2014 Square Inc.
 *
 * 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 jose

import (
	"bytes"
	"crypto/cipher"
	"crypto/rand"
	"io"
	"testing"
)

func TestInvalidSymmetricAlgorithms(t *testing.T) {
	_, err := newSymmetricRecipient("XYZ", []byte{})
	if err != ErrUnsupportedAlgorithm {
		t.Error("should not accept invalid algorithm")
	}

	enc := &symmetricKeyCipher{}
	_, err = enc.encryptKey([]byte{}, "XYZ")
	if err != ErrUnsupportedAlgorithm {
		t.Error("should not accept invalid algorithm")
	}
}

func TestAeadErrors(t *testing.T) {
	aead := &aeadContentCipher{
		keyBytes:     16,
		authtagBytes: 16,
		getAead: func(key []byte) (cipher.AEAD, error) {
			return nil, ErrCryptoFailure
		},
	}

	parts, err := aead.encrypt([]byte{}, []byte{}, []byte{})
	if err != ErrCryptoFailure {
		t.Error("should handle aead failure")
	}

	_, err = aead.decrypt([]byte{}, []byte{}, parts)
	if err != ErrCryptoFailure {
		t.Error("should handle aead failure")
	}
}

func TestInvalidKey(t *testing.T) {
	gcm := newAESGCM(16).(*aeadContentCipher)
	_, err := gcm.getAead([]byte{})
	if err == nil {
		t.Error("should not accept invalid key")
	}
}

func TestStaticKeyGen(t *testing.T) {
	key := make([]byte, 32)
	io.ReadFull(rand.Reader, key)

	gen := &staticKeyGenerator{key: key}
	if gen.keySize() != len(key) {
		t.Error("static key generator reports incorrect size")
	}

	generated, _, err := gen.genKey()
	if err != nil {
		t.Error("static key generator should always succeed", err)
	}
	if !bytes.Equal(generated, key) {
		t.Error("static key generator returns different data")
	}
}

func TestVectorsAESGCM(t *testing.T) {
	// Source: http://tools.ietf.org/html/draft-ietf-jose-json-web-encryption-29#appendix-A.1
	plaintext := []byte{
		84, 104, 101, 32, 116, 114, 117, 101, 32, 115, 105, 103, 110, 32,
		111, 102, 32, 105, 110, 116, 101, 108, 108, 105, 103, 101, 110, 99,
		101, 32, 105, 115, 32, 110, 111, 116, 32, 107, 110, 111, 119, 108,
		101, 100, 103, 101, 32, 98, 117, 116, 32, 105, 109, 97, 103, 105,
		110, 97, 116, 105, 111, 110, 46}

	aad := []byte{
		101, 121, 74, 104, 98, 71, 99, 105, 79, 105, 74, 83, 85, 48, 69,
		116, 84, 48, 70, 70, 85, 67, 73, 115, 73, 109, 86, 117, 89, 121, 73,
		54, 73, 107, 69, 121, 78, 84, 90, 72, 81, 48, 48, 105, 102, 81}

	expectedCiphertext := []byte{
		229, 236, 166, 241, 53, 191, 115, 196, 174, 43, 73, 109, 39, 122,
		233, 96, 140, 206, 120, 52, 51, 237, 48, 11, 190, 219, 186, 80, 111,
		104, 50, 142, 47, 167, 59, 61, 181, 127, 196, 21, 40, 82, 242, 32,
		123, 143, 168, 226, 73, 216, 176, 144, 138, 247, 106, 60, 16, 205,
		160, 109, 64, 63, 192}

	expectedAuthtag := []byte{
		92, 80, 104, 49, 133, 25, 161, 215, 173, 101, 219, 211, 136, 91, 210, 145}

	// Mock random reader
	randReader = bytes.NewReader([]byte{
		177, 161, 244, 128, 84, 143, 225, 115, 63, 180, 3, 255, 107, 154,
		212, 246, 138, 7, 110, 91, 112, 46, 34, 105, 47, 130, 203, 46, 122,
		234, 64, 252, 227, 197, 117, 252, 2, 219, 233, 68, 180, 225, 77, 219})
	defer resetRandReader()

	enc := newAESGCM(32)
	key, _, _ := randomKeyGenerator{size: 32}.genKey()
	out, err := enc.encrypt(key, aad, plaintext)
	if err != nil {
		t.Error("Unable to encrypt:", err)
		return
	}

	if bytes.Compare(out.ciphertext, expectedCiphertext) != 0 {
		t.Error("Ciphertext did not match")
	}
	if bytes.Compare(out.tag, expectedAuthtag) != 0 {
		t.Error("Auth tag did not match")
	}
}