2 GoVPN -- simple secure free software virtual private network daemon
3 Copyright (C) 2014-2019 Sergey Matveev <stargrave@stargrave.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 3 of the License.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
30 testKey = new([32]byte)
34 io.ReadFull(rand.Reader, testKey[:])
37 func TestSymmetric(t *testing.T) {
38 nonce := make([]byte, 8)
39 f := func(data []byte, pktNum uint64) bool {
43 binary.BigEndian.PutUint64(nonce, pktNum)
44 chaffed := Chaff(testKey, nonce, data)
45 if len(chaffed) != len(data)*EnlargeFactor {
48 decoded, err := Winnow(testKey, nonce, chaffed)
52 return bytes.Compare(decoded, data) == 0
54 if err := quick.Check(f, nil); err != nil {
59 func TestSmallSize(t *testing.T) {
60 _, err := Winnow(testKey, []byte("foobar12"), []byte("foobar"))
66 func BenchmarkChaff(b *testing.B) {
67 nonce := make([]byte, 8)
68 data := make([]byte, 16)
69 io.ReadFull(rand.Reader, nonce)
70 io.ReadFull(rand.Reader, data)
72 for i := 0; i < b.N; i++ {
73 Chaff(testKey, nonce, data)
77 func BenchmarkWinnow(b *testing.B) {
78 nonce := make([]byte, 8)
79 data := make([]byte, 16)
80 io.ReadFull(rand.Reader, nonce)
81 io.ReadFull(rand.Reader, data)
82 chaffed := Chaff(testKey, nonce, data)
84 for i := 0; i < b.N; i++ {
85 Winnow(testKey, nonce, chaffed)