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
|
/*
* crypto_test.go - tests for the crypto package
*
* Copyright 2017 Google Inc.
* Author: Joe Richey (joerichey@google.com)
*
* 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 crypto
import (
"bytes"
"os"
"testing"
)
// Reader that always returns the same byte
type ConstReader byte
func (r ConstReader) Read(b []byte) (n int, err error) {
for i := range b {
b[i] = byte(r)
}
return len(b), nil
}
// Makes a key of the same repeating byte
func makeKey(b byte, n int) (*Key, error) {
return NewFixedLengthKeyFromReader(ConstReader(b), n)
}
// Tests the two ways of making keys
func TestMakeKeys(t *testing.T) {
data := []byte("1234\n6789")
key1, err := NewKeyFromReader(bytes.NewReader(data))
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(data, key1.data) {
t.Error("Key from reader contained incorrect data")
}
key2, err := NewFixedLengthKeyFromReader(bytes.NewReader(data), 6)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal([]byte("1234\n6"), key2.data) {
t.Error("Fixed length key from reader contained incorrect data")
}
}
// Tests that wipe succeeds
func TestWipe(t *testing.T) {
key, err := makeKey(1, 1000)
if err != nil {
t.Fatal(err)
}
if err := key.Wipe(); err != nil {
t.Error(err)
}
}
// Making keys with negative length should fail
func TestInvalidLength(t *testing.T) {
_, err := NewFixedLengthKeyFromReader(bytes.NewReader([]byte{1, 2, 3, 4}), -1)
if err == nil {
t.Error("Negative lengths should cause failure")
}
}
// Test making keys of zero length
func TestZeroLength(t *testing.T) {
key1, err := NewFixedLengthKeyFromReader(os.Stdin, 0)
if err != nil {
t.Fatal(err)
}
if key1.data != nil {
t.Error("FIxed length key from reader contained data")
}
key2, err := NewKeyFromReader(bytes.NewReader(nil))
if err != nil {
t.Fatal(err)
}
if key2.data != nil {
t.Error("Key from empty reader contained data")
}
}
// Test making keys long enough that the keys will have to resize
func TestLongLength(t *testing.T) {
// Key will have to resize 3 times
data := bytes.Repeat([]byte{1}, os.Getpagesize()*5)
key, err := NewKeyFromReader(bytes.NewReader(data))
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(data, key.data) {
t.Error("Key contained incorrect data")
}
}
|
