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Merge pull request #7618 from morehouse/derandomize_brontide_fuzz
brontide: deterministic fuzz targets
This commit is contained in:
Oliver Gugger
GitHub
commit
15525ff74c
2 changed files with 105 additions and 87 deletions
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@ -2,12 +2,16 @@ package brontide
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import (
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"bytes"
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"crypto/ecdsa"
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"encoding/hex"
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"io"
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"math"
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"math/rand"
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"testing"
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"github.com/btcsuite/btcd/btcec/v2"
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"github.com/davecgh/go-spew/spew"
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"github.com/decred/dcrd/dcrec/secp256k1/v4"
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"github.com/lightningnetwork/lnd/keychain"
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)
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@ -59,66 +63,77 @@ var (
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// and completes the brontide handshake between them. If any part of the
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// handshake fails, this function will panic.
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func completeHandshake(t *testing.T, initiator, responder *Machine) {
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t.Helper()
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if err := handshake(initiator, responder); err != nil {
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nilAndPanic(t, initiator, responder, err)
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}
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}
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// handshake actually completes the brontide handshake and bubbles up
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// an error to the calling function.
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func handshake(initiator, responder *Machine) error {
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// Generate ActOne and send to the responder.
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actOne, err := initiator.GenActOne()
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if err != nil {
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return err
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dumpAndFail(t, initiator, responder, err)
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}
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if err := responder.RecvActOne(actOne); err != nil {
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return err
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dumpAndFail(t, initiator, responder, err)
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}
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// Generate ActTwo and send to initiator.
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actTwo, err := responder.GenActTwo()
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if err != nil {
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return err
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dumpAndFail(t, initiator, responder, err)
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}
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if err := initiator.RecvActTwo(actTwo); err != nil {
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return err
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dumpAndFail(t, initiator, responder, err)
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}
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// Generate ActThree and send to responder.
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actThree, err := initiator.GenActThree()
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if err != nil {
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return err
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dumpAndFail(t, initiator, responder, err)
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}
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return responder.RecvActThree(actThree)
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if err := responder.RecvActThree(actThree); err != nil {
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dumpAndFail(t, initiator, responder, err)
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}
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}
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// nilAndPanic first nils the initiator and responder's Curve fields and then
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// panics.
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func nilAndPanic(t *testing.T, initiator, responder *Machine, err error) {
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// dumpAndFail dumps the initiator and responder Machines and fails.
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func dumpAndFail(t *testing.T, initiator, responder *Machine, err error) {
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t.Helper()
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t.Fatalf("error: %v, initiator: %v, responder: %v", err,
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spew.Sdump(initiator), spew.Sdump(responder))
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}
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// getBrontideMachines returns two brontide machines that use random keys
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// everywhere.
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func getBrontideMachines() (*Machine, *Machine) {
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initPriv, _ := btcec.NewPrivateKey()
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respPriv, _ := btcec.NewPrivateKey()
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respPub := (respPriv.PubKey())
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// newInsecurePrivateKey returns a private key that is generated using a
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// cryptographically insecure RNG. This function should only be used for testing
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// where reproducibility is required.
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func newInsecurePrivateKey(t *testing.T,
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insecureRNG io.Reader) *btcec.PrivateKey {
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key, err := ecdsa.GenerateKey(secp256k1.S256(), insecureRNG)
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if err != nil {
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t.Fatalf("error generating private key: %v", err)
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}
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return secp256k1.PrivKeyFromBytes(key.D.Bytes())
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}
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// getBrontideMachines returns two brontide machines that use pseudorandom keys
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// everywhere, generated from seed.
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func getBrontideMachines(t *testing.T, seed int64) (*Machine, *Machine) {
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rng := rand.New(rand.NewSource(seed))
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initPriv := newInsecurePrivateKey(t, rng)
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respPriv := newInsecurePrivateKey(t, rng)
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respPub := respPriv.PubKey()
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initPrivECDH := &keychain.PrivKeyECDH{PrivKey: initPriv}
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respPrivECDH := &keychain.PrivKeyECDH{PrivKey: respPriv}
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initiator := NewBrontideMachine(true, initPrivECDH, respPub)
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responder := NewBrontideMachine(false, respPrivECDH, nil)
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ephGen := EphemeralGenerator(func() (*btcec.PrivateKey, error) {
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return newInsecurePrivateKey(t, rng), nil
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})
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initiator := NewBrontideMachine(true, initPrivECDH, respPub, ephGen)
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responder := NewBrontideMachine(false, respPrivECDH, nil, ephGen)
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return initiator, responder
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}
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@ -144,14 +159,14 @@ func getStaticBrontideMachines() (*Machine, *Machine) {
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// FuzzRandomActOne fuzz tests ActOne in the brontide handshake.
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func FuzzRandomActOne(f *testing.F) {
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f.Fuzz(func(t *testing.T, data []byte) {
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f.Fuzz(func(t *testing.T, seed int64, data []byte) {
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// Check if data is large enough.
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if len(data) < ActOneSize {
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return
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}
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// This will return brontide machines with random keys.
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_, responder := getBrontideMachines()
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_, responder := getBrontideMachines(t, seed)
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// Copy data into [ActOneSize]byte.
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var actOne [ActOneSize]byte
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@ -159,31 +174,31 @@ func FuzzRandomActOne(f *testing.F) {
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// Responder receives ActOne, should fail on the MAC check.
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if err := responder.RecvActOne(actOne); err == nil {
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nilAndPanic(t, nil, responder, nil)
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dumpAndFail(t, nil, responder, nil)
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}
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})
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}
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// FuzzRandomActThree fuzz tests ActThree in the brontide handshake.
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func FuzzRandomActThree(f *testing.F) {
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f.Fuzz(func(t *testing.T, data []byte) {
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f.Fuzz(func(t *testing.T, seed int64, data []byte) {
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// Check if data is large enough.
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if len(data) < ActThreeSize {
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return
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}
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// This will return brontide machines with random keys.
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initiator, responder := getBrontideMachines()
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initiator, responder := getBrontideMachines(t, seed)
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// Generate ActOne and send to the responder.
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actOne, err := initiator.GenActOne()
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if err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Receiving ActOne should succeed, so we panic on error.
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if err := responder.RecvActOne(actOne); err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Generate ActTwo - this is not sent to the initiator because
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@ -192,7 +207,7 @@ func FuzzRandomActThree(f *testing.F) {
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// the appropriate state in the responder machine.
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_, err = responder.GenActTwo()
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if err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Copy data into [ActThreeSize]byte.
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@ -201,21 +216,21 @@ func FuzzRandomActThree(f *testing.F) {
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// Responder receives ActThree, should fail on the MAC check.
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if err := responder.RecvActThree(actThree); err == nil {
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nilAndPanic(t, initiator, responder, nil)
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dumpAndFail(t, initiator, responder, nil)
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}
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})
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}
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// FuzzRandomActTwo fuzz tests ActTwo in the brontide handshake.
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func FuzzRandomActTwo(f *testing.F) {
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f.Fuzz(func(t *testing.T, data []byte) {
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f.Fuzz(func(t *testing.T, seed int64, data []byte) {
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// Check if data is large enough.
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if len(data) < ActTwoSize {
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return
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}
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// This will return brontide machines with random keys.
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initiator, _ := getBrontideMachines()
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initiator, _ := getBrontideMachines(t, seed)
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// Generate ActOne - this isn't sent to the responder because
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// nothing is done with the responder machine and this would
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@ -223,7 +238,7 @@ func FuzzRandomActTwo(f *testing.F) {
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// appropriate state in the initiator machine.
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_, err := initiator.GenActOne()
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if err != nil {
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nilAndPanic(t, initiator, nil, err)
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dumpAndFail(t, initiator, nil, err)
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}
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// Copy data into [ActTwoSize]byte.
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@ -232,7 +247,7 @@ func FuzzRandomActTwo(f *testing.F) {
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// Initiator receives ActTwo, should fail.
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if err := initiator.RecvActTwo(actTwo); err == nil {
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nilAndPanic(t, initiator, nil, nil)
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dumpAndFail(t, initiator, nil, nil)
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}
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})
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}
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@ -240,9 +255,9 @@ func FuzzRandomActTwo(f *testing.F) {
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// FuzzRandomInitDecrypt fuzz tests decrypting arbitrary data with the
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// initiator.
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func FuzzRandomInitDecrypt(f *testing.F) {
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f.Fuzz(func(t *testing.T, data []byte) {
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f.Fuzz(func(t *testing.T, seed int64, data []byte) {
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// This will return brontide machines with random keys.
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initiator, responder := getBrontideMachines()
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initiator, responder := getBrontideMachines(t, seed)
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// Complete the brontide handshake.
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completeHandshake(t, initiator, responder)
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@ -253,7 +268,7 @@ func FuzzRandomInitDecrypt(f *testing.F) {
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// Decrypt the encrypted message using ReadMessage w/ initiator
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// machine.
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if _, err := initiator.ReadMessage(r); err == nil {
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nilAndPanic(t, initiator, responder, nil)
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dumpAndFail(t, initiator, responder, nil)
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}
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})
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}
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@ -261,7 +276,7 @@ func FuzzRandomInitDecrypt(f *testing.F) {
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// FuzzRandomInitEncDec fuzz tests round-trip encryption and decryption between
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// the initiator and the responder.
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func FuzzRandomInitEncDec(f *testing.F) {
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f.Fuzz(func(t *testing.T, data []byte) {
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f.Fuzz(func(t *testing.T, seed int64, data []byte) {
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// Ensure that length of message is not greater than max allowed
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// size.
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if len(data) > math.MaxUint16 {
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@ -269,7 +284,7 @@ func FuzzRandomInitEncDec(f *testing.F) {
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}
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// This will return brontide machines with random keys.
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initiator, responder := getBrontideMachines()
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initiator, responder := getBrontideMachines(t, seed)
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// Complete the brontide handshake.
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completeHandshake(t, initiator, responder)
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@ -278,25 +293,25 @@ func FuzzRandomInitEncDec(f *testing.F) {
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// Encrypt the message using WriteMessage w/ initiator machine.
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if err := initiator.WriteMessage(data); err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Flush the encrypted message w/ initiator machine.
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if _, err := initiator.Flush(&b); err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Decrypt the ciphertext using ReadMessage w/ responder
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// machine.
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plaintext, err := responder.ReadMessage(&b)
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if err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Check that the decrypted message and the original message are
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// equal.
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if !bytes.Equal(data, plaintext) {
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nilAndPanic(t, initiator, responder, nil)
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dumpAndFail(t, initiator, responder, nil)
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}
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})
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}
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@ -304,7 +319,7 @@ func FuzzRandomInitEncDec(f *testing.F) {
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// FuzzRandomInitEncrypt fuzz tests the encryption of arbitrary data with the
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// initiator.
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func FuzzRandomInitEncrypt(f *testing.F) {
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f.Fuzz(func(t *testing.T, data []byte) {
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f.Fuzz(func(t *testing.T, seed int64, data []byte) {
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// Ensure that length of message is not greater than max allowed
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// size.
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if len(data) > math.MaxUint16 {
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@ -312,7 +327,7 @@ func FuzzRandomInitEncrypt(f *testing.F) {
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}
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// This will return brontide machines with random keys.
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initiator, responder := getBrontideMachines()
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initiator, responder := getBrontideMachines(t, seed)
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// Complete the brontide handshake.
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completeHandshake(t, initiator, responder)
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@ -321,12 +336,12 @@ func FuzzRandomInitEncrypt(f *testing.F) {
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// Encrypt the message using WriteMessage w/ initiator machine.
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if err := initiator.WriteMessage(data); err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Flush the encrypted message w/ initiator machine.
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if _, err := initiator.Flush(&b); err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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})
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}
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@ -334,9 +349,9 @@ func FuzzRandomInitEncrypt(f *testing.F) {
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// FuzzRandomRespDecrypt fuzz tests the decryption of arbitrary data with the
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// responder.
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func FuzzRandomRespDecrypt(f *testing.F) {
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f.Fuzz(func(t *testing.T, data []byte) {
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f.Fuzz(func(t *testing.T, seed int64, data []byte) {
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// This will return brontide machines with random keys.
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initiator, responder := getBrontideMachines()
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initiator, responder := getBrontideMachines(t, seed)
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// Complete the brontide handshake.
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completeHandshake(t, initiator, responder)
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@ -347,7 +362,7 @@ func FuzzRandomRespDecrypt(f *testing.F) {
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// Decrypt the encrypted message using ReadMessage w/ responder
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// machine.
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if _, err := responder.ReadMessage(r); err == nil {
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nilAndPanic(t, initiator, responder, nil)
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dumpAndFail(t, initiator, responder, nil)
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}
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})
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}
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@ -355,7 +370,7 @@ func FuzzRandomRespDecrypt(f *testing.F) {
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// FuzzRandomRespEncDec fuzz tests round-trip encryption and decryption between
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// the responder and the initiator.
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func FuzzRandomRespEncDec(f *testing.F) {
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f.Fuzz(func(t *testing.T, data []byte) {
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f.Fuzz(func(t *testing.T, seed int64, data []byte) {
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// Ensure that length of message is not greater than max allowed
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// size.
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if len(data) > math.MaxUint16 {
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@ -363,7 +378,7 @@ func FuzzRandomRespEncDec(f *testing.F) {
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}
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// This will return brontide machines with random keys.
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initiator, responder := getBrontideMachines()
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initiator, responder := getBrontideMachines(t, seed)
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// Complete the brontide handshake.
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completeHandshake(t, initiator, responder)
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@ -372,25 +387,25 @@ func FuzzRandomRespEncDec(f *testing.F) {
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// Encrypt the message using WriteMessage w/ responder machine.
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if err := responder.WriteMessage(data); err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Flush the encrypted message w/ responder machine.
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if _, err := responder.Flush(&b); err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Decrypt the ciphertext using ReadMessage w/ initiator
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// machine.
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plaintext, err := initiator.ReadMessage(&b)
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if err != nil {
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nilAndPanic(t, initiator, responder, err)
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dumpAndFail(t, initiator, responder, err)
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}
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// Check that the decrypted message and the original message are
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// equal.
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if !bytes.Equal(data, plaintext) {
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nilAndPanic(t, initiator, responder, nil)
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dumpAndFail(t, initiator, responder, nil)
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}
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})
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}
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@ -398,7 +413,7 @@ func FuzzRandomRespEncDec(f *testing.F) {
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// FuzzRandomRespEncrypt fuzz tests encryption of arbitrary data with the
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// responder.
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func FuzzRandomRespEncrypt(f *testing.F) {
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f.Fuzz(func(t *testing.T, data []byte) {
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f.Fuzz(func(t *testing.T, seed int64, data []byte) {
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// Ensure that length of message is not greater than max allowed
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// size.
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if len(data) > math.MaxUint16 {
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@ -406,7 +421,7 @@ func FuzzRandomRespEncrypt(f *testing.F) {
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}
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// This will return brontide machines with random keys.
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initiator, responder := getBrontideMachines()
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initiator, responder := getBrontideMachines(t, seed)
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// Complete the brontide handshake.
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completeHandshake(t, initiator, responder)
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@ -415,12 +430,12 @@ func FuzzRandomRespEncrypt(f *testing.F) {
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// Encrypt the message using WriteMessage w/ responder machine.
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if err := responder.WriteMessage(data); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Flush the encrypted message w/ responder machine.
|
||||
if _, err := responder.Flush(&b); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -442,7 +457,7 @@ func FuzzStaticActOne(f *testing.F) {
|
|||
|
||||
// Responder receives ActOne, should fail.
|
||||
if err := responder.RecvActOne(actOne); err == nil {
|
||||
nilAndPanic(t, nil, responder, nil)
|
||||
dumpAndFail(t, nil, responder, nil)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -461,12 +476,12 @@ func FuzzStaticActThree(f *testing.F) {
|
|||
// Generate ActOne and send to the responder.
|
||||
actOne, err := initiator.GenActOne()
|
||||
if err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Receiving ActOne should succeed, so we panic on error.
|
||||
if err := responder.RecvActOne(actOne); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Generate ActTwo - this is not sent to the initiator because
|
||||
|
|
@ -475,7 +490,7 @@ func FuzzStaticActThree(f *testing.F) {
|
|||
// the appropriate state in the responder machine.
|
||||
_, err = responder.GenActTwo()
|
||||
if err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Copy data into [ActThreeSize]byte.
|
||||
|
|
@ -484,7 +499,7 @@ func FuzzStaticActThree(f *testing.F) {
|
|||
|
||||
// Responder receives ActThree, should fail.
|
||||
if err := responder.RecvActThree(actThree); err == nil {
|
||||
nilAndPanic(t, initiator, responder, nil)
|
||||
dumpAndFail(t, initiator, responder, nil)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -506,7 +521,7 @@ func FuzzStaticActTwo(f *testing.F) {
|
|||
// appropriate state in the initiator machine.
|
||||
_, err := initiator.GenActOne()
|
||||
if err != nil {
|
||||
nilAndPanic(t, initiator, nil, err)
|
||||
dumpAndFail(t, initiator, nil, err)
|
||||
}
|
||||
|
||||
// Copy data into [ActTwoSize]byte.
|
||||
|
|
@ -515,7 +530,7 @@ func FuzzStaticActTwo(f *testing.F) {
|
|||
|
||||
// Initiator receives ActTwo, should fail.
|
||||
if err := initiator.RecvActTwo(actTwo); err == nil {
|
||||
nilAndPanic(t, initiator, nil, nil)
|
||||
dumpAndFail(t, initiator, nil, nil)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -536,7 +551,7 @@ func FuzzStaticInitDecrypt(f *testing.F) {
|
|||
// Decrypt the encrypted message using ReadMessage w/ initiator
|
||||
// machine.
|
||||
if _, err := initiator.ReadMessage(r); err == nil {
|
||||
nilAndPanic(t, initiator, responder, nil)
|
||||
dumpAndFail(t, initiator, responder, nil)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -561,25 +576,25 @@ func FuzzStaticInitEncDec(f *testing.F) {
|
|||
|
||||
// Encrypt the message using WriteMessage w/ initiator machine.
|
||||
if err := initiator.WriteMessage(data); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Flush the encrypted message w/ initiator machine.
|
||||
if _, err := initiator.Flush(&b); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Decrypt the ciphertext using ReadMessage w/ responder
|
||||
// machine.
|
||||
plaintext, err := responder.ReadMessage(&b)
|
||||
if err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Check that the decrypted message and the original message are
|
||||
// equal.
|
||||
if !bytes.Equal(data, plaintext) {
|
||||
nilAndPanic(t, initiator, responder, nil)
|
||||
dumpAndFail(t, initiator, responder, nil)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -604,12 +619,12 @@ func FuzzStaticInitEncrypt(f *testing.F) {
|
|||
|
||||
// Encrypt the message using WriteMessage w/ initiator machine.
|
||||
if err := initiator.WriteMessage(data); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Flush the encrypted message w/ initiator machine.
|
||||
if _, err := initiator.Flush(&b); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -630,7 +645,7 @@ func FuzzStaticRespDecrypt(f *testing.F) {
|
|||
// Decrypt the encrypted message using ReadMessage w/ responder
|
||||
// machine.
|
||||
if _, err := responder.ReadMessage(r); err == nil {
|
||||
nilAndPanic(t, initiator, responder, nil)
|
||||
dumpAndFail(t, initiator, responder, nil)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -655,25 +670,25 @@ func FuzzStaticRespEncDec(f *testing.F) {
|
|||
|
||||
// Encrypt the message using WriteMessage w/ responder machine.
|
||||
if err := responder.WriteMessage(data); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Flush the encrypted message w/ responder machine.
|
||||
if _, err := responder.Flush(&b); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Decrypt the ciphertext using ReadMessage w/ initiator
|
||||
// machine.
|
||||
plaintext, err := initiator.ReadMessage(&b)
|
||||
if err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Check that the decrypted message and the original message are
|
||||
// equal.
|
||||
if !bytes.Equal(data, plaintext) {
|
||||
nilAndPanic(t, initiator, responder, nil)
|
||||
dumpAndFail(t, initiator, responder, nil)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -698,12 +713,12 @@ func FuzzStaticRespEncrypt(f *testing.F) {
|
|||
|
||||
// Encrypt the message using WriteMessage w/ responder machine.
|
||||
if err := responder.WriteMessage(data); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
|
||||
// Flush the encrypted message w/ responder machine.
|
||||
if _, err := responder.Flush(&b); err != nil {
|
||||
nilAndPanic(t, initiator, responder, err)
|
||||
dumpAndFail(t, initiator, responder, err)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
|
|||
|
|
@ -70,6 +70,9 @@ unlock or create.
|
|||
* [Started](https://github.com/lightningnetwork/lnd/pull/7494) running fuzz
|
||||
tests in CI.
|
||||
|
||||
* [Derandomized](https://github.com/lightningnetwork/lnd/pull/7618) the BOLT
|
||||
8 fuzz tests.
|
||||
|
||||
* [Added fuzz tests](https://github.com/lightningnetwork/lnd/pull/7649) for
|
||||
signature parsing and conversion.
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue