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record_test.go
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record_test.go
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/*
*
* Copyright 2020 gRPC authors.
*
* 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 record
import (
"bytes"
"errors"
"net"
"reflect"
"testing"
s2apb "google.golang.org/grpc/security/s2a/internal/proto"
"google.golang.org/grpc/security/s2a/internal/record/internal/aeadcrypter/testutil"
)
// fakeConn is a fake implementation of the net.Conn interface used for testing.
type fakeConn struct {
net.Conn
// inCount tracks the current index of the `in` buffer.
inCount int
in, out [][]byte
closed bool
}
// Read returns part of the `in` buffer in sequential order each time it is
// called.
func (c *fakeConn) Read(b []byte) (n int, err error) {
n = copy(b, c.in[c.inCount])
if n < len(c.in[c.inCount]) {
// For testing, we want to make sure that each buffer is copied in its
// entirety.
return 0, errors.New("copy copied less bytes than expected")
}
c.inCount++
return n, nil
}
// Write copies the given buffer b, stores it in the `out` buffer, and returns
// the number of bytes copied.
func (c *fakeConn) Write(b []byte) (n int, err error) {
outBuf := make([]byte, len(b))
n = copy(outBuf, b)
c.out = append(c.out, outBuf)
return n, nil
}
func (c *fakeConn) Close() error {
c.closed = true
return nil
}
func TestNewS2ARecordConn(t *testing.T) {
for _, tc := range []struct {
desc string
options *ConnParameters
outUnusedBytesBuf []byte
outOverheadSize int
outHandshakerServiceAddr string
outErr bool
}{
{
desc: "nil conn options",
outErr: true,
},
{
desc: "invalid input traffic secret size",
options: &ConnParameters{
NetConn: &fakeConn{},
Ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
TLSVersion: s2apb.TLSVersion_TLS1_3,
InTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
OutTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
HSAddr: "test handshaker address",
},
outErr: true,
},
{
desc: "invalid output traffic secret size",
options: &ConnParameters{
NetConn: &fakeConn{},
Ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
TLSVersion: s2apb.TLSVersion_TLS1_3,
InTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
OutTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
HSAddr: "test handshaker address",
},
outErr: true,
},
{
desc: "invalid tls version",
options: &ConnParameters{
NetConn: &fakeConn{},
Ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
TLSVersion: s2apb.TLSVersion_TLS1_2,
InTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
OutTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
HSAddr: "test handshaker address",
},
outErr: true,
},
{
desc: "basic with AES-128-GCM-SHA256",
options: &ConnParameters{
NetConn: &fakeConn{},
Ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
TLSVersion: s2apb.TLSVersion_TLS1_3,
InTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
OutTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
HSAddr: "test handshaker address",
},
// outOverheadSize = header size (5) + record type byte (1) +
// tag size (16).
outOverheadSize: 22,
outHandshakerServiceAddr: "test handshaker address",
},
{
desc: "basic with AES-256-GCM-SHA384",
options: &ConnParameters{
NetConn: &fakeConn{},
Ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
TLSVersion: s2apb.TLSVersion_TLS1_3,
InTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
OutTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
HSAddr: "test handshaker address",
},
// outOverheadSize = header size (5) + record type byte (1) +
// tag size (16).
outOverheadSize: 22,
outHandshakerServiceAddr: "test handshaker address",
},
{
desc: "basic with CHACHA20-POLY1305-SHA256",
options: &ConnParameters{
NetConn: &fakeConn{},
Ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
TLSVersion: s2apb.TLSVersion_TLS1_3,
InTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
OutTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
HSAddr: "test handshaker address",
},
// outOverheadSize = header size (5) + record type byte (1) +
// tag size (16).
outOverheadSize: 22,
outHandshakerServiceAddr: "test handshaker address",
},
{
desc: "basic with unusedBytes",
options: &ConnParameters{
NetConn: &fakeConn{},
Ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
TLSVersion: s2apb.TLSVersion_TLS1_3,
InTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
OutTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
UnusedBuf: testutil.Dehex("ffffffff"),
HSAddr: "test handshaker address",
},
outUnusedBytesBuf: testutil.Dehex("ffffffff"),
// outOverheadSize = header size (5) + record type byte (1) +
// tag size (16).
outOverheadSize: 22,
outHandshakerServiceAddr: "test handshaker address",
},
} {
t.Run(tc.desc, func(t *testing.T) {
NetConn, err := NewConn(tc.options)
if got, want := err == nil, !tc.outErr; got != want {
t.Errorf("NewConn(%v) = (err=nil) = %v, want %v", *tc.options, got, want)
}
if err != nil {
return
}
conn := NetConn.(*conn)
if got, want := conn.unusedBuf, tc.outUnusedBytesBuf; !bytes.Equal(got, want) {
t.Errorf("conn.unusedBytes = %v, want %v", got, want)
}
if got, want := conn.overheadSize, tc.outOverheadSize; got != want {
t.Errorf("conn.overheadSize = %v, want %v", got, want)
}
if got, want := conn.hsAddr, tc.outHandshakerServiceAddr; got != want {
t.Errorf("conn.HSAddr = %v, want %v", got, want)
}
})
}
}
func TestStripPaddingAndType(t *testing.T) {
for _, tc := range []struct {
desc string
pendingApplicationData, outPendingApplicationData []byte
outContentType recordType
}{
{
desc: "no padding",
pendingApplicationData: []byte{byte(alert)},
outContentType: alert,
},
{
desc: "single padding",
pendingApplicationData: []byte{byte(applicationData), 0x00},
outContentType: applicationData,
},
{
desc: "multi padding",
pendingApplicationData: []byte{byte(handshake), 0x00, 0x00},
outContentType: handshake,
},
{
desc: "app data with no padding",
pendingApplicationData: []byte{0xff, byte(handshake)},
outPendingApplicationData: []byte{0xff},
outContentType: handshake,
},
{
desc: "app data with padding",
pendingApplicationData: []byte{0xff, byte(handshake), 0x00},
outPendingApplicationData: []byte{0xff},
outContentType: handshake,
},
} {
t.Run(tc.desc, func(t *testing.T) {
c := conn{pendingApplicationData: tc.pendingApplicationData}
ct, err := c.stripPaddingAndType()
if err != nil {
t.Errorf("c.stripPaddingAndType() failed: %v", err)
}
if got, want := c.pendingApplicationData, tc.outPendingApplicationData; !bytes.Equal(got, want) {
t.Errorf("c.pendingApplicationData = %v, want %v", got, want)
}
if got, want := ct, tc.outContentType; got != want {
t.Errorf("ct = %v, want %v", got, want)
}
})
}
}
func TestParseRecord(t *testing.T) {
for _, tc := range []struct {
desc string
b []byte
maxLen uint16
outCompletedRecord, outRemaining []byte
outErr bool
}{
{
desc: "buffer smaller than header size",
b: make([]byte, 1),
outRemaining: make([]byte, 1),
},
{
desc: "header payload size larger than maxLen",
b: testutil.Dehex("000000ffff"),
maxLen: 1,
outRemaining: testutil.Dehex("000000ffff"),
outErr: true,
},
{
desc: "header payload size same as maxLen",
b: testutil.Dehex("0000000003ffffff"),
maxLen: 3,
outCompletedRecord: testutil.Dehex("0000000003ffffff"),
},
{
desc: "incomplete record",
b: testutil.Dehex("0000000001"),
maxLen: 10,
outRemaining: testutil.Dehex("0000000001"),
},
{
desc: "complete record",
b: testutil.Dehex("0000000001ff"),
maxLen: 10,
outCompletedRecord: testutil.Dehex("0000000001ff"),
},
} {
t.Run(tc.desc, func(t *testing.T) {
completedRecord, remaining, err := parseReadBuffer(tc.b, tc.maxLen)
if got, want := err == nil, !tc.outErr; got != want {
t.Errorf("parseReadBuffer(%v, %v) = (err=nil) = %v, want %v", tc.b, tc.maxLen, got, want)
}
if err != nil {
return
}
if got, want := completedRecord, tc.outCompletedRecord; !bytes.Equal(got, want) {
t.Errorf("completedRecord = %v, want %v", got, want)
}
if got, want := remaining, tc.outRemaining; !bytes.Equal(got, want) {
t.Errorf("remaining = %v, want %v", got, want)
}
})
}
}
func TestReadCompletedRecord(t *testing.T) {
for _, tc := range []struct {
desc string
connBufs [][]byte
nextRecord, unusedBuf []byte
outCompletedRecords [][]byte
outErr bool
}{
{
desc: "invalid record header size",
nextRecord: testutil.Dehex("170303ffff"),
outErr: true,
},
{
desc: "complete record in single read",
connBufs: [][]byte{
testutil.Dehex("1703030001ff"),
},
outCompletedRecords: [][]byte{
testutil.Dehex("1703030001ff"),
},
},
{
desc: "complete record in single read from leftover buffer",
nextRecord: testutil.Dehex("1703030001ff"),
outCompletedRecords: [][]byte{
testutil.Dehex("1703030001ff"),
},
},
{
desc: "complete record split in header",
connBufs: [][]byte{
testutil.Dehex("170303"),
testutil.Dehex("0001ff"),
},
unusedBuf: make([]byte, tlsRecordMaxPlaintextSize),
outCompletedRecords: [][]byte{
testutil.Dehex("1703030001ff"),
},
},
{
desc: "complete record split in ciphertext",
connBufs: [][]byte{
testutil.Dehex("1703030002ff"),
testutil.Dehex("ff"),
},
unusedBuf: make([]byte, tlsRecordMaxPlaintextSize),
outCompletedRecords: [][]byte{
testutil.Dehex("1703030002ffff"),
},
},
{
desc: "two complete records split in header",
connBufs: [][]byte{
testutil.Dehex("170303"),
testutil.Dehex("0002ffff1703030001ff"),
},
unusedBuf: make([]byte, tlsRecordMaxPlaintextSize),
outCompletedRecords: [][]byte{
testutil.Dehex("1703030002ffff"),
testutil.Dehex("1703030001ff"),
},
},
{
desc: "two complete records split in second header",
connBufs: [][]byte{
testutil.Dehex("1703030002ffff1703"),
testutil.Dehex("030001ff"),
},
unusedBuf: make([]byte, tlsRecordMaxPlaintextSize),
outCompletedRecords: [][]byte{
testutil.Dehex("1703030002ffff"),
testutil.Dehex("1703030001ff"),
},
},
{
desc: "two complete records split in ciphertext",
connBufs: [][]byte{
testutil.Dehex("1703030002ff"),
testutil.Dehex("ff1703030001ff"),
},
unusedBuf: make([]byte, tlsRecordMaxPlaintextSize),
outCompletedRecords: [][]byte{
testutil.Dehex("1703030002ffff"),
testutil.Dehex("1703030001ff"),
},
},
{
desc: "two complete records split in second ciphertext",
connBufs: [][]byte{
testutil.Dehex("1703030002ffff1703030002ff"),
testutil.Dehex("ff"),
},
unusedBuf: make([]byte, tlsRecordMaxPlaintextSize),
outCompletedRecords: [][]byte{
testutil.Dehex("1703030002ffff"),
testutil.Dehex("1703030002ffff"),
},
},
{
desc: "complete record split by each byte",
connBufs: [][]byte{
{0x17}, {0x03}, {0x03}, {0x00}, {0x01}, {0xff},
},
unusedBuf: make([]byte, tlsRecordMaxPlaintextSize),
outCompletedRecords: [][]byte{
testutil.Dehex("1703030001ff"),
},
},
} {
t.Run(tc.desc, func(t *testing.T) {
fc := &fakeConn{in: tc.connBufs}
c := &conn{Conn: fc, nextRecord: tc.nextRecord, unusedBuf: tc.unusedBuf}
for _, outCompletedRecord := range tc.outCompletedRecords {
completedRecord, err := c.readFullRecord()
if got, want := err == nil, !tc.outErr; got != want {
t.Errorf("c.readCompletecRecord() = (err=nil) = %v, want %v", got, want)
}
if err != nil {
return
}
if got, want := completedRecord, outCompletedRecord; !bytes.Equal(got, want) {
t.Errorf("c.readFullRecord() = %v, want %v", got, want)
}
}
})
}
}
func TestSplitAndValidateHeader(t *testing.T) {
for _, tc := range []struct {
desc string
completedRecord []byte
outHeader, outCiphertext []byte
outErr bool
}{
{
desc: "invalid header type",
completedRecord: make([]byte, tlsRecordHeaderSize),
outErr: true,
},
{
desc: "invalid legacy record version",
completedRecord: []byte{byte(tlsApplicationData), 0x00, 0x00, 0x00, 0x00},
outErr: true,
},
{
desc: "basic with no ciphertext",
completedRecord: []byte{byte(tlsApplicationData), 0x03, 0x03, 0x00, 0x00},
outHeader: []byte{byte(tlsApplicationData), 0x03, 0x03, 0x00, 0x00},
},
{
desc: "basic with ciphertext",
completedRecord: []byte{byte(tlsApplicationData), 0x03, 0x03, 0x00, 0x01, 0xff},
outHeader: []byte{byte(tlsApplicationData), 0x03, 0x03, 0x00, 0x01},
outCiphertext: []byte{0xff},
},
} {
t.Run(tc.desc, func(t *testing.T) {
header, ciphertext, err := splitAndValidateHeader(tc.completedRecord)
if got, want := err == nil, !tc.outErr; got != want {
t.Errorf("splitAndValidateHeader(%v) = (err=nil) = %v, want %v", tc.completedRecord, got, want)
}
if err != nil {
return
}
if got, want := header, tc.outHeader; !bytes.Equal(got, want) {
t.Errorf("header = %v, want %v", got, want)
}
if got, want := ciphertext, tc.outCiphertext; !bytes.Equal(got, want) {
t.Errorf("ciphertext = %v, want %v", got, want)
}
})
}
}
func TestConnReadApplicationData(t *testing.T) {
for _, tc := range []struct {
desc string
ciphersuite s2apb.Ciphersuite
inTrafficSecret []byte
completedRecords [][]byte
outPlaintexts [][]byte
outErr bool
}{
// The traffic secrets were chosen randomly and are equivalent to the
// ones used in C++ and Java. The ciphertext was constructed using an
// existing TLS library.
{
desc: "AES-128-GCM-SHA256 with no padding",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030017f2e4e411ac6760e4e3f074a36574c45ee4c1906103db0d"),
testutil.Dehex("170303001ad7853afd6d7ceaabab950a0b6707905d2b908894871c7c62021f"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "AES-128-GCM-SHA256 with padding",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030021f2e4e411ac6760e84726e4886d7432e39b34f0fccfc1f4558303c68a19535c0ff5"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
},
},
{
desc: "AES-128-GCM-SHA256 empty",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030011d47cb2ec040f26cc8989330339c669dd4e"),
},
outPlaintexts: [][]byte{
[]byte(""),
},
},
{
desc: "AES-256-GCM-SHA384 with no padding",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("170303001724efee5af1a62170ad5a95f899d038b965386a1a7daed9"),
testutil.Dehex("170303001a832a5fd271b6442e74bc02111a8e8b52a74b14dd3eca8598b293"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "AES-256-GCM-SHA384 with padding",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("170303002124efee5af1a621e8a4d1f269930e7835cfdd05e2d0bec5b01a67decfa6372c2af7"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
},
},
{
desc: "AES-256-GCM-SHA384 empty",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("170303001102a04134d38c1118f36b01d177c5d2dcf7"),
},
outPlaintexts: [][]byte{
[]byte(""),
},
},
{
desc: "CHACHA20-POLY1305-SHA256 with no padding",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030017c947ffa470304370338bb07ce468e6b8a0944a338ba402"),
testutil.Dehex("170303001a0cedeb922170c110c172262542c67916b78fa0d1c1261709cd00"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "CHACHA20-POLY1305-SHA256 with padding",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030021c947ffa4703043f063e7b6a0519fbd0956cf3a7c9730c13597eec17ec7e700f140"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
},
},
{
desc: "CHACHA20-POLY1305-SHA256 empty",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030011ef8f7a428ddc84ee5968cd6306bf1d2d1b"),
},
outPlaintexts: [][]byte{
[]byte(""),
},
},
{
desc: "AES-128-GCM-SHA256 split in first record",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030017f2e4e411ac6760"),
testutil.Dehex("e4e3f074a36574c45ee4c1906103db0d"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
},
},
{
desc: "AES-256-GCM-SHA384 split in first record",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("170303001724efee5af1a6"),
testutil.Dehex("2170ad5a95f899d038b965386a1a7daed9"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
},
},
{
desc: "CHACHA20-POLY1305-SHA256 split in first record",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030017c947ffa470"),
testutil.Dehex("304370338bb07ce468e6b8a0944a338ba402"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
},
},
{
desc: "AES-128-GCM-SHA256 split in first record header",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("17"),
testutil.Dehex("03030017f2e4e411ac6760e4e3f074a36574c45ee4c1906103db0d"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
},
},
{
desc: "AES-256-GCM-SHA384 split in first record header",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("17"),
testutil.Dehex("0303001724efee5af1a62170ad5a95f899d038b965386a1a7daed9"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
},
},
{
desc: "CHACHA20-POLY1305-SHA256 split in first record header",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("17"),
testutil.Dehex("03030017c947ffa470304370338bb07ce468e6b8a0944a338ba402"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
},
},
{
desc: "AES-128-GCM-SHA256 split in second record",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030017f2e4e411ac6760e4e3f074a36574c45ee4c1906103db0d170303001ad7"),
testutil.Dehex("853afd6d7ceaabab950a0b6707905d2b908894871c7c62021f"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "AES-256-GCM-SHA384 split in second record",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("170303001724efee5af1a62170ad5a95f899d038b965386a1a7daed9170303001a83"),
testutil.Dehex("2a5fd271b6442e74bc02111a8e8b52a74b14dd3eca8598b293"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "CHACHA20-POLY1305-SHA256 split in second record",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030017c947ffa470304370338bb07ce468e6b8a0944a338ba402170303001a0c"),
testutil.Dehex("edeb922170c110c172262542c67916b78fa0d1c1261709cd00"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "AES-128-GCM-SHA256 split in second record header",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030017f2e4e411ac6760e4e3f074a36574c45ee4c1906103db0d17"),
testutil.Dehex("0303001ad7853afd6d7ceaabab950a0b6707905d2b908894871c7c62021f"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "AES-256-GCM-SHA384 split in second record header",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("170303001724efee5af1a62170ad5a95f899d038b965386a1a7daed917"),
testutil.Dehex("0303001a832a5fd271b6442e74bc02111a8e8b52a74b14dd3eca8598b293"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "CHACHA20-POLY1305-SHA256 split in second record header",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030017c947ffa470304370338bb07ce468e6b8a0944a338ba40217"),
testutil.Dehex("0303001a0cedeb922170c110c172262542c67916b78fa0d1c1261709cd00"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "AES-128-GCM-SHA256 split randomly",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030017f2e4e411ac6760e4"),
testutil.Dehex("e3f074a36574c45ee4c1906103db0d17"),
testutil.Dehex("0303001ad7853afd6d7ceaab"),
testutil.Dehex("ab950a0b6707905d2b908894871c7c62021f"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "AES-256-GCM-SHA384 split randomly",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("170303001724efee"),
testutil.Dehex("5af1a62170ad5a95f899d038b965386a1a7daed917"),
testutil.Dehex("03"),
testutil.Dehex("03001a832a5fd271b6442e74bc02111a8e8b52a74b14dd3eca8598b293"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
{
desc: "CHACHA20-POLY1305-SHA256 split randomly",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("17"),
testutil.Dehex("03030017c947ffa470304370338bb07ce468e6b8a0944a338ba40217"),
testutil.Dehex("0303001a0cedeb922170"),
testutil.Dehex("c110c172262542c67916b78fa0d1c1261709cd00"),
},
outPlaintexts: [][]byte{
[]byte("123456"),
[]byte("789123456"),
},
},
} {
t.Run(tc.desc, func(t *testing.T) {
c, err := NewConn(&ConnParameters{
NetConn: &fakeConn{in: tc.completedRecords},
Ciphersuite: tc.ciphersuite,
TLSVersion: s2apb.TLSVersion_TLS1_3,
InTrafficSecret: tc.inTrafficSecret,
OutTrafficSecret: tc.inTrafficSecret,
})
if err != nil {
t.Fatalf("NewConn() failed: %v", err)
}
for _, outPlaintext := range tc.outPlaintexts {
plaintext := make([]byte, tlsRecordMaxPlaintextSize)
n, err := c.Read(plaintext)
if got, want := err == nil, !tc.outErr; got != want {
t.Errorf("c.Read(plaintext) = (err=nil) = %v, want %v", got, want)
}
if err != nil {
return
}
plaintext = plaintext[:n]
if got, want := plaintext, outPlaintext; !bytes.Equal(got, want) {
t.Errorf("c.Read(plaintext) = %v, want %v", got, want)
}
}
})
}
}
func TestConnReadAlert(t *testing.T) {
for _, tc := range []struct {
desc string
ciphersuite s2apb.Ciphersuite
inTrafficSecret []byte
completedRecord []byte
outClosed bool
outErr bool
}{
// The records below are TLS 1.3 records that hold the ciphertext
// obtained by encrypting (with or without padding) the close notify
// alert {0x01, 0x00} using the keys derived from the given traffic
// secrets and the sequence number zero.
{
desc: "AES-128-GCM-SHA256 with no padding",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("1703030013c2d6c245fb80969de1dd9d14499261b67735b0"),
outClosed: true,
},
{
desc: "AES-128-GCM-SHA256 with padding",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("170303001dc2d6c225995177e84726e4886d5ea79383e5d529cd8339fbbfcafe2418"),
outClosed: true,
},
{
desc: "AES-256-GCM-SHA384 with no padding",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("170303001314ddc8f3b3856660bb5ac81533c157582f8b4c"),
outClosed: true,
},
{
desc: "AES-256-GCM-SHA384 with padding",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("170303001d14ddc86ec49036e8a4d1f269933545f03b0fe9ffd8b02acd1e41f7139e"),
outClosed: true,
},
{
desc: "CHACHA20-POLY1305-SHA256 with no padding",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("1703030013f975d9cb2f116d85d4e3859f5288a9b013d778"),
outClosed: true,
},
{
desc: "CHACHA20-POLY1305-SHA256 with padding",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("170303001df975d990450654f063e7b6a0514c2714c9827e796071389802f451585a"),
outClosed: true,
},
// The records below are TLS 1.3 records that hold the ciphertext
// obtained by encrypting the alert {0x01, 0x2c} using the keys derived
// from the given traffic secrets and the sequence number zero.
{
desc: "AES-128-GCM-SHA256 other alert",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("1703030013c2fac23f995cbe79a8d1e4c8f0353afefeaac9"),
},
{
desc: "AES-256-GCM-SHA384 other alert",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("170303001314f1c80add85193c9598219ae9dc26f2479ccf"),
},
{
desc: "CHACHA20-POLY1305-SHA256 other alert",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("1703030013f959d96fed92bdc7e85e04e86c19eaf154b052"),
},
// The records below are TLS 1.3 records that hold the ciphertext
// obtained by encrypting the message {0x01} using the keys derived
// from the given traffic secrets and the sequence number zero. The
// first byte of this message indicates that it should be an alert
// message, but the length of the message is too small.
{
desc: "AES-128-GCM-SHA256 invalid",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("1703030012c2c351fc48d9ac84fa165adcc9a26ffbc3c7"),
outErr: true,
},
{
desc: "AES-256-GCM-SHA384 invalid",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("170303001214c8476102a460b5cf9e9ba59e1726215ca9"),
outErr: true,
},
{
desc: "CHACHA20-POLY1305-SHA256 invalid",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecord: testutil.Dehex("1703030012f9606a83ac17b165a51f3fe764da8560c706"),
outErr: true,
},
} {
t.Run(tc.desc, func(t *testing.T) {
f := &fakeConn{in: [][]byte{tc.completedRecord}}
c, err := NewConn(&ConnParameters{
NetConn: f,
Ciphersuite: tc.ciphersuite,
TLSVersion: s2apb.TLSVersion_TLS1_3,
InTrafficSecret: tc.inTrafficSecret,
OutTrafficSecret: tc.inTrafficSecret,
})
if err != nil {
t.Fatalf("NewConn() failed: %v", err)
}
plaintext := make([]byte, tlsRecordMaxPlaintextSize)
_, err = c.Read(plaintext)
if got, want := err == nil, !tc.outErr; got != want {
t.Errorf("c.Read(plaintext) = (err=nil) = %v, want %v", got, want)
}
if err != nil {
return
}
if got, want := f.closed, tc.outClosed; got != want {
t.Errorf("f.closed = %v, want %v", got, want)
}
if got, want := len(c.(*conn).pendingApplicationData), 0; got != want {
t.Errorf("len(c.(*conn).pendingApplicationData) = %v, want %v", got, want)
}
})
}
}
func TestConnReadKeyUpdate(t *testing.T) {
for _, tc := range []struct {
desc string
ciphersuite s2apb.Ciphersuite
inTrafficSecret []byte
completedRecords [][]byte
outPlaintexts [][]byte
}{
{
desc: "AES-128-GCM-SHA256",
ciphersuite: s2apb.Ciphersuite_AES_128_GCM_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030020dbd6d724994777e84726e4886d7432e311a73b42d0073f28ea60e30e8eb498fd"),
testutil.Dehex("1703030017dd99ebef48292cd4c372a000740372d2ae9aad31cfd274"),
},
outPlaintexts: [][]byte{
[]byte(""),
[]byte("123456"),
},
},
{
desc: "AES-256-GCM-SHA384",
ciphersuite: s2apb.Ciphersuite_AES_256_GCM_SHA384,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("17030300200ddddd6fc48636e8a4d1f269930e7835adc07e732ba7fd617ff9a65a51c36b6d"),
testutil.Dehex("17030300179cd5972e76baf56af644c92235460301c0a013ad35be00"),
},
outPlaintexts: [][]byte{
[]byte(""),
[]byte("123456"),
},
},
{
desc: "CHACHA20-POLY1305-SHA256",
ciphersuite: s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256,
inTrafficSecret: testutil.Dehex("6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b"),
completedRecords: [][]byte{
testutil.Dehex("1703030020e075cc91451054f063e7b6a0519fbd098e83bda4b515bea5196cccc008556ad0"),
testutil.Dehex("1703030017c4e48ccaf036bd9bc146bbc6192404f9a2d2da5d1afe78"),