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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tls
import (
"bytes"
"encoding/hex"
"hash"
"strings"
"testing"
"unicode"
)
// This file contains tests derived from draft-ietf-tls-tls13-vectors-07.
func parseVector(v string) []byte {
v = strings.Map(func(c rune) rune {
if unicode.IsSpace(c) {
return -1
}
return c
}, v)
parts := strings.Split(v, ":")
v = parts[len(parts)-1]
res, err := hex.DecodeString(v)
if err != nil {
panic(err)
}
return res
}
func TestDeriveSecret(t *testing.T) {
chTranscript := cipherSuitesTLS13[0].hash.New()
chTranscript.Write(parseVector(`
payload (512 octets): 01 00 01 fc 03 03 1b c3 ce b6 bb e3 9c ff
93 83 55 b5 a5 0a db 6d b2 1b 7a 6a f6 49 d7 b4 bc 41 9d 78 76
48 7d 95 00 00 06 13 01 13 03 13 02 01 00 01 cd 00 00 00 0b 00
09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12
00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00
26 00 24 00 1d 00 20 e4 ff b6 8a c0 5f 8d 96 c9 9d a2 66 98 34
6c 6b e1 64 82 ba dd da fe 05 1a 66 b4 f1 8d 66 8f 0b 00 2a 00
00 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02
03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02
02 02 00 2d 00 02 01 01 00 1c 00 02 40 01 00 15 00 57 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 29 00 dd 00 b8 00 b2 2c 03 5d 82 93 59 ee 5f f7 af 4e c9 00
00 00 00 26 2a 64 94 dc 48 6d 2c 8a 34 cb 33 fa 90 bf 1b 00 70
ad 3c 49 88 83 c9 36 7c 09 a2 be 78 5a bc 55 cd 22 60 97 a3 a9
82 11 72 83 f8 2a 03 a1 43 ef d3 ff 5d d3 6d 64 e8 61 be 7f d6
1d 28 27 db 27 9c ce 14 50 77 d4 54 a3 66 4d 4e 6d a4 d2 9e e0
37 25 a6 a4 da fc d0 fc 67 d2 ae a7 05 29 51 3e 3d a2 67 7f a5
90 6c 5b 3f 7d 8f 92 f2 28 bd a4 0d da 72 14 70 f9 fb f2 97 b5
ae a6 17 64 6f ac 5c 03 27 2e 97 07 27 c6 21 a7 91 41 ef 5f 7d
e6 50 5e 5b fb c3 88 e9 33 43 69 40 93 93 4a e4 d3 57 fa d6 aa
cb 00 21 20 3a dd 4f b2 d8 fd f8 22 a0 ca 3c f7 67 8e f5 e8 8d
ae 99 01 41 c5 92 4d 57 bb 6f a3 1b 9e 5f 9d`))
type args struct {
secret []byte
label string
transcript hash.Hash
}
tests := []struct {
name string
args args
want []byte
}{
{
`derive secret for handshake "tls13 derived"`,
args{
parseVector(`PRK (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a`),
"derived",
nil,
},
parseVector(`expanded (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba`),
},
{
`derive secret "tls13 c e traffic"`,
args{
parseVector(`PRK (32 octets): 9b 21 88 e9 b2 fc 6d 64 d7 1d c3 29 90 0e 20 bb
41 91 50 00 f6 78 aa 83 9c bb 79 7c b7 d8 33 2c`),
"c e traffic",
chTranscript,
},
parseVector(`expanded (32 octets): 3f bb e6 a6 0d eb 66 c3 0a 32 79 5a ba 0e
ff 7e aa 10 10 55 86 e7 be 5c 09 67 8d 63 b6 ca ab 62`),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
c := cipherSuitesTLS13[0]
if got := c.deriveSecret(tt.args.secret, tt.args.label, tt.args.transcript); !bytes.Equal(got, tt.want) {
t.Errorf("cipherSuiteTLS13.deriveSecret() = % x, want % x", got, tt.want)
}
})
}
}
func TestTrafficKey(t *testing.T) {
trafficSecret := parseVector(
`PRK (32 octets): b6 7b 7d 69 0c c1 6c 4e 75 e5 42 13 cb 2d 37 b4
e9 c9 12 bc de d9 10 5d 42 be fd 59 d3 91 ad 38`)
wantKey := parseVector(
`key expanded (16 octets): 3f ce 51 60 09 c2 17 27 d0 f2 e4 e8 6e
e4 03 bc`)
wantIV := parseVector(
`iv expanded (12 octets): 5d 31 3e b2 67 12 76 ee 13 00 0b 30`)
c := cipherSuitesTLS13[0]
gotKey, gotIV := c.trafficKey(trafficSecret)
if !bytes.Equal(gotKey, wantKey) {
t.Errorf("cipherSuiteTLS13.trafficKey() gotKey = % x, want % x", gotKey, wantKey)
}
if !bytes.Equal(gotIV, wantIV) {
t.Errorf("cipherSuiteTLS13.trafficKey() gotIV = % x, want % x", gotIV, wantIV)
}
}
func TestExtract(t *testing.T) {
type args struct {
newSecret []byte
currentSecret []byte
}
tests := []struct {
name string
args args
want []byte
}{
{
`extract secret "early"`,
args{
nil,
nil,
},
parseVector(`secret (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c
e2 10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a`),
},
{
`extract secret "master"`,
args{
nil,
parseVector(`salt (32 octets): 43 de 77 e0 c7 77 13 85 9a 94 4d b9 db 25 90 b5
31 90 a6 5b 3e e2 e4 f1 2d d7 a0 bb 7c e2 54 b4`),
},
parseVector(`secret (32 octets): 18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a
47 80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19`),
},
{
`extract secret "handshake"`,
args{
parseVector(`IKM (32 octets): 8b d4 05 4f b5 5b 9d 63 fd fb ac f9 f0 4b 9f 0d
35 e6 d6 3f 53 75 63 ef d4 62 72 90 0f 89 49 2d`),
parseVector(`salt (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba b6 97
16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba`),
},
parseVector(`secret (32 octets): 1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b
01 04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac`),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
c := cipherSuitesTLS13[0]
if got := c.extract(tt.args.newSecret, tt.args.currentSecret); !bytes.Equal(got, tt.want) {
t.Errorf("cipherSuiteTLS13.extract() = % x, want % x", got, tt.want)
}
})
}
}
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