98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package tka
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import (
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"bytes"
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"crypto/ed25519"
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"encoding/binary"
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"math/rand"
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"testing"
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"tailscale.com/types/key"
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"tailscale.com/types/tkatype"
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)
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// returns a random source based on the test name + extraSeed.
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func testingRand(t *testing.T, extraSeed int64) *rand.Rand {
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var seed int64
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if err := binary.Read(bytes.NewBuffer([]byte(t.Name())), binary.LittleEndian, &seed); err != nil {
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panic(err)
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}
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return rand.New(rand.NewSource(seed + extraSeed))
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}
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// generates a 25519 private key based on the seed + test name.
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func testingKey25519(t *testing.T, seed int64) (ed25519.PublicKey, ed25519.PrivateKey) {
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pub, priv, err := ed25519.GenerateKey(testingRand(t, seed))
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if err != nil {
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panic(err)
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}
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return pub, priv
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}
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func TestVerify25519(t *testing.T) {
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pub, priv := testingKey25519(t, 1)
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key := Key{
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Kind: Key25519,
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Public: pub,
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}
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aum := AUM{
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MessageKind: AUMRemoveKey,
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KeyID: []byte{1, 2, 3, 4},
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// Signatures is set to crap so we are sure its ignored in the sigHash computation.
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Signatures: []tkatype.Signature{{KeyID: []byte{45, 42}}},
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}
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sigHash := aum.SigHash()
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aum.Signatures = []tkatype.Signature{
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{
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KeyID: key.MustID(),
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Signature: ed25519.Sign(priv, sigHash[:]),
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},
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}
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if err := signatureVerify(&aum.Signatures[0], aum.SigHash(), key); err != nil {
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t.Errorf("signature verification failed: %v", err)
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}
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// Make sure it fails with a different public key.
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pub2, _ := testingKey25519(t, 2)
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key2 := Key{Kind: Key25519, Public: pub2}
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if err := signatureVerify(&aum.Signatures[0], aum.SigHash(), key2); err == nil {
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t.Error("signature verification with different key did not fail")
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}
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}
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func TestNLPrivate(t *testing.T) {
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p := key.NewNLPrivate()
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pub := p.Public()
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// Test that key.NLPrivate implements Signer by making a new
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// authority.
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k := Key{Kind: Key25519, Public: pub.Verifier(), Votes: 1}
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_, aum, err := Create(&Mem{}, State{
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Keys: []Key{k},
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DisablementSecrets: [][]byte{bytes.Repeat([]byte{1}, 32)},
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}, p)
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if err != nil {
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t.Fatalf("Create() failed: %v", err)
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}
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// Make sure the generated genesis AUM was signed.
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if got, want := len(aum.Signatures), 1; got != want {
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t.Fatalf("len(signatures) = %d, want %d", got, want)
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}
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sigHash := aum.SigHash()
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if ok := ed25519.Verify(pub.Verifier(), sigHash[:], aum.Signatures[0].Signature); !ok {
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t.Error("signature did not verify")
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}
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// We manually compute the keyID, so make sure its consistent with
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// tka.Key.ID().
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if !bytes.Equal(k.MustID(), p.KeyID()) {
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t.Errorf("private.KeyID() & tka KeyID differ: %x != %x", k.MustID(), p.KeyID())
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}
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}
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