mirror of
https://github.com/tailscale/tailscale.git
synced 2024-12-11 18:54:42 +00:00
272 lines
9.2 KiB
Go
272 lines
9.2 KiB
Go
// Copyright (c) 2022 Tailscale Inc & 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 tka
|
|
|
|
import (
|
|
"bytes"
|
|
"testing"
|
|
|
|
"github.com/fxamacker/cbor/v2"
|
|
"github.com/google/go-cmp/cmp"
|
|
"golang.org/x/crypto/blake2s"
|
|
)
|
|
|
|
func TestSerialization(t *testing.T) {
|
|
uint2 := uint(2)
|
|
var fakeAUMHash AUMHash
|
|
|
|
tcs := []struct {
|
|
Name string
|
|
AUM AUM
|
|
Expect []byte
|
|
}{
|
|
{
|
|
"AddKey",
|
|
AUM{MessageKind: AUMAddKey, Key: &Key{}},
|
|
[]byte{
|
|
0xa3, // major type 5 (map), 3 items
|
|
0x01, // |- major type 0 (int), value 1 (first key, MessageKind)
|
|
0x01, // |- major type 0 (int), value 1 (first value, AUMAddKey)
|
|
0x02, // |- major type 0 (int), value 2 (second key, PrevAUMHash)
|
|
0xf6, // |- major type 7 (val), value null (second value, nil)
|
|
0x03, // |- major type 0 (int), value 3 (third key, Key)
|
|
0xa3, // |- major type 5 (map), 3 items (type Key)
|
|
0x01, // |- major type 0 (int), value 1 (first key, Kind)
|
|
0x00, // |- major type 0 (int), value 0 (first value)
|
|
0x02, // |- major type 0 (int), value 2 (second key, Votes)
|
|
0x00, // |- major type 0 (int), value 0 (first value)
|
|
0x03, // |- major type 0 (int), value 3 (third key, Public)
|
|
0xf6, // |- major type 7 (val), value null (third value, nil)
|
|
},
|
|
},
|
|
{
|
|
"RemoveKey",
|
|
AUM{MessageKind: AUMRemoveKey, KeyID: []byte{1, 2}},
|
|
[]byte{
|
|
0xa3, // major type 5 (map), 3 items
|
|
0x01, // |- major type 0 (int), value 1 (first key, MessageKind)
|
|
0x02, // |- major type 0 (int), value 2 (first value, AUMRemoveKey)
|
|
0x02, // |- major type 0 (int), value 2 (second key, PrevAUMHash)
|
|
0xf6, // |- major type 7 (val), value null (second value, nil)
|
|
0x04, // |- major type 0 (int), value 4 (third key, KeyID)
|
|
0x42, // |- major type 2 (byte string), 2 items
|
|
0x01, // |- major type 0 (int), value 1 (byte 1)
|
|
0x02, // |- major type 0 (int), value 2 (byte 2)
|
|
},
|
|
},
|
|
{
|
|
"UpdateKey",
|
|
AUM{MessageKind: AUMUpdateKey, Votes: &uint2, KeyID: []byte{1, 2}, Meta: map[string]string{"a": "b"}},
|
|
[]byte{
|
|
0xa5, // major type 5 (map), 5 items
|
|
0x01, // |- major type 0 (int), value 1 (first key, MessageKind)
|
|
0x05, // |- major type 0 (int), value 2 (first value, AUMUpdateKey)
|
|
0x02, // |- major type 0 (int), value 2 (second key, PrevAUMHash)
|
|
0xf6, // |- major type 7 (val), value null (second value, nil)
|
|
0x04, // |- major type 0 (int), value 4 (third key, KeyID)
|
|
0x42, // |- major type 2 (byte string), 2 items
|
|
0x01, // |- major type 0 (int), value 1 (byte 1)
|
|
0x02, // |- major type 0 (int), value 2 (byte 2)
|
|
0x07, // |- major type 0 (int), value 7 (fourth key, Votes)
|
|
0x02, // |- major type 0 (int), value 2 (forth value, 2)
|
|
0x08, // |- major type 0 (int), value 8 (fifth key, Meta)
|
|
0xa1, // |- major type 5 (map), 1 item (map[string]string type)
|
|
0x61, // |- major type 3 (text string), value 1 (first key, one byte long)
|
|
0x61, // |- byte 'a'
|
|
0x61, // |- major type 3 (text string), value 1 (first value, one byte long)
|
|
0x62, // |- byte 'b'
|
|
},
|
|
},
|
|
{
|
|
"DisableNL",
|
|
AUM{MessageKind: AUMDisableNL, PrevAUMHash: []byte{1, 2}, DisablementSecret: []byte{3, 4}},
|
|
[]byte{
|
|
0xa3, // major type 5 (map), 3 items
|
|
0x01, // |- major type 0 (int), value 1 (first key, MessageKind)
|
|
0x03, // |- major type 0 (int), value 3 (first value, AUMDisableNL)
|
|
0x02, // |- major type 0 (int), value 2 (second key, PrevAUMHash)
|
|
0x42, // |- major type 2 (byte string), 2 items (second value)
|
|
0x01, // |- major type 0 (int), value 1 (byte 1)
|
|
0x02, // |- major type 0 (int), value 2 (byte 2)
|
|
0x06, // |- major type 0 (int), value 6 (third key, DisablementSecret)
|
|
0x42, // |- major type 2 (byte string), 2 items (third value)
|
|
0x03, // |- major type 0 (int), value 3 (byte 3)
|
|
0x04, // |- major type 0 (int), value 4 (byte 4)
|
|
},
|
|
},
|
|
{
|
|
"Checkpoint",
|
|
AUM{MessageKind: AUMCheckpoint, PrevAUMHash: []byte{1, 2}, State: &State{
|
|
LastAUMHash: &fakeAUMHash,
|
|
Keys: []Key{
|
|
{Kind: Key25519, Public: []byte{5, 6}},
|
|
},
|
|
}},
|
|
append(
|
|
append([]byte{
|
|
0xa3, // major type 5 (map), 3 items
|
|
0x01, // |- major type 0 (int), value 1 (first key, MessageKind)
|
|
0x06, // |- major type 0 (int), value 6 (first value, AUMCheckpoint)
|
|
0x02, // |- major type 0 (int), value 2 (second key, PrevAUMHash)
|
|
0x42, // |- major type 2 (byte string), 2 items (second value)
|
|
0x01, // |- major type 0 (int), value 1 (byte 1)
|
|
0x02, // |- major type 0 (int), value 2 (byte 2)
|
|
0x05, // |- major type 0 (int), value 5 (third key, State)
|
|
0xa3, // |- major type 5 (map), 3 items (third value, State type)
|
|
0x01, // |- major type 0 (int), value 1 (first key, LastAUMHash)
|
|
0x58, 0x20, // |- major type 2 (byte string), 32 items (first value)
|
|
},
|
|
bytes.Repeat([]byte{0}, 32)...),
|
|
[]byte{
|
|
0x02, // |- major type 0 (int), value 2 (second key, DisablementSecrets)
|
|
0xf6, // |- major type 7 (val), value null (second value, nil)
|
|
0x03, // |- major type 0 (int), value 3 (third key, Keys)
|
|
0x81, // |- major type 4 (array), value 1 (one item in array)
|
|
0xa3, // |- major type 5 (map), 3 items (Key type)
|
|
0x01, // |- major type 0 (int), value 1 (first key, Kind)
|
|
0x01, // |- major type 0 (int), value 1 (first value, Key25519)
|
|
0x02, // |- major type 0 (int), value 2 (second key, Votes)
|
|
0x00, // |- major type 0 (int), value 0 (second value, 0)
|
|
0x03, // |- major type 0 (int), value 3 (third key, Public)
|
|
0x42, // |- major type 2 (byte string), 2 items (third value)
|
|
0x05, // |- major type 0 (int), value 5 (byte 5)
|
|
0x06, // |- major type 0 (int), value 6 (byte 6)
|
|
}...),
|
|
},
|
|
{
|
|
"Signature",
|
|
AUM{MessageKind: AUMAddKey, Signatures: []Signature{{KeyID: []byte{1}}}},
|
|
[]byte{
|
|
0xa3, // major type 5 (map), 3 items
|
|
0x01, // |- major type 0 (int), value 1 (first key, MessageKind)
|
|
0x01, // |- major type 0 (int), value 1 (first value, AUMAddKey)
|
|
0x02, // |- major type 0 (int), value 2 (second key, PrevAUMHash)
|
|
0xf6, // |- major type 7 (val), value null (second value, nil)
|
|
0x17, // |- major type 0 (int), value 22 (third key, Signatures)
|
|
0x81, // |- major type 4 (array), value 1 (one item in array)
|
|
0xa2, // |- major type 5 (map), 2 items (Signature type)
|
|
0x01, // |- major type 0 (int), value 1 (first key, KeyID)
|
|
0x41, // |- major type 2 (byte string), 1 item
|
|
0x01, // |- major type 0 (int), value 1 (byte 1)
|
|
0x02, // |- major type 0 (int), value 2 (second key, Signature)
|
|
0xf6, // |- major type 7 (val), value null (second value, nil)
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, tc := range tcs {
|
|
t.Run(tc.Name, func(t *testing.T) {
|
|
data := tc.AUM.Serialize()
|
|
if diff := cmp.Diff(tc.Expect, data); diff != "" {
|
|
t.Errorf("serialization differs (-want, +got):\n%s", diff)
|
|
}
|
|
|
|
var decodedAUM AUM
|
|
if err := cbor.Unmarshal(data, &decodedAUM); err != nil {
|
|
t.Fatalf("Unmarshal failed: %v", err)
|
|
}
|
|
if diff := cmp.Diff(tc.AUM, decodedAUM); diff != "" {
|
|
t.Errorf("unmarshalled version differs (-want, +got):\n%s", diff)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestAUMWeight(t *testing.T) {
|
|
var fakeKeyID [blake2s.Size]byte
|
|
testingRand(t, 1).Read(fakeKeyID[:])
|
|
|
|
pub, _ := testingKey25519(t, 1)
|
|
key := Key{Kind: Key25519, Public: pub, Votes: 2}
|
|
pub, _ = testingKey25519(t, 2)
|
|
key2 := Key{Kind: Key25519, Public: pub, Votes: 2}
|
|
|
|
tcs := []struct {
|
|
Name string
|
|
AUM AUM
|
|
State State
|
|
Want uint
|
|
}{
|
|
{
|
|
"Empty",
|
|
AUM{},
|
|
State{},
|
|
0,
|
|
},
|
|
{
|
|
"Key unknown",
|
|
AUM{
|
|
Signatures: []Signature{{KeyID: fakeKeyID[:]}},
|
|
},
|
|
State{},
|
|
0,
|
|
},
|
|
{
|
|
"Unary key",
|
|
AUM{
|
|
Signatures: []Signature{{KeyID: key.ID()}},
|
|
},
|
|
State{
|
|
Keys: []Key{key},
|
|
},
|
|
2,
|
|
},
|
|
{
|
|
"Multiple keys",
|
|
AUM{
|
|
Signatures: []Signature{{KeyID: key.ID()}, {KeyID: key2.ID()}},
|
|
},
|
|
State{
|
|
Keys: []Key{key, key2},
|
|
},
|
|
4,
|
|
},
|
|
{
|
|
"Double use",
|
|
AUM{
|
|
Signatures: []Signature{{KeyID: key.ID()}, {KeyID: key.ID()}},
|
|
},
|
|
State{
|
|
Keys: []Key{key},
|
|
},
|
|
2,
|
|
},
|
|
}
|
|
|
|
for _, tc := range tcs {
|
|
t.Run(tc.Name, func(t *testing.T) {
|
|
got := tc.AUM.Weight(tc.State)
|
|
if got != tc.Want {
|
|
t.Errorf("Weight() = %d, want %d", got, tc.Want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestAUMHashes(t *testing.T) {
|
|
// .Hash(): a hash over everything.
|
|
// .SigHash(): a hash over everything except the signatures.
|
|
// The signatures are over a hash of the AUM, so
|
|
// using SigHash() breaks this circularity.
|
|
|
|
aum := AUM{MessageKind: AUMAddKey, Key: &Key{Kind: Key25519}}
|
|
sigHash1 := aum.SigHash()
|
|
aumHash1 := aum.Hash()
|
|
|
|
aum.Signatures = []Signature{{KeyID: []byte{1, 2, 3, 4}}}
|
|
sigHash2 := aum.SigHash()
|
|
aumHash2 := aum.Hash()
|
|
if len(aum.Signatures) != 1 {
|
|
t.Error("signature was removed by one of the hash functions")
|
|
}
|
|
|
|
if !bytes.Equal(sigHash1[:], sigHash1[:]) {
|
|
t.Errorf("signature hash dependent on signatures!\n\t1 = %x\n\t2 = %x", sigHash1, sigHash2)
|
|
}
|
|
if bytes.Equal(aumHash1[:], aumHash2[:]) {
|
|
t.Error("aum hash didnt change")
|
|
}
|
|
}
|