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package p2p
import (
"bytes"
"net"
"reflect"
"testing"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/crypto/ecies"
"github.com/ethereum/go-ethereum/p2p/discover"
)
func TestPublicKeyEncoding(t *testing.T) {
prv0, _ := crypto.GenerateKey() // = ecdsa.GenerateKey(crypto.S256(), rand.Reader)
pub0 := &prv0.PublicKey
pub0s := crypto.FromECDSAPub(pub0)
pub1, err := importPublicKey(pub0s)
if err != nil {
t.Errorf("%v", err)
}
eciesPub1 := ecies.ImportECDSAPublic(pub1)
if eciesPub1 == nil {
t.Errorf("invalid ecdsa public key")
}
pub1s, err := exportPublicKey(pub1)
if err != nil {
t.Errorf("%v", err)
}
if len(pub1s) != 64 {
t.Errorf("wrong length expect 64, got", len(pub1s))
}
pub2, err := importPublicKey(pub1s)
if err != nil {
t.Errorf("%v", err)
}
pub2s, err := exportPublicKey(pub2)
if err != nil {
t.Errorf("%v", err)
}
if !bytes.Equal(pub1s, pub2s) {
t.Errorf("exports dont match")
}
pub2sEC := crypto.FromECDSAPub(pub2)
if !bytes.Equal(pub0s, pub2sEC) {
t.Errorf("exports dont match")
}
}
func TestSharedSecret(t *testing.T) {
prv0, _ := crypto.GenerateKey() // = ecdsa.GenerateKey(crypto.S256(), rand.Reader)
pub0 := &prv0.PublicKey
prv1, _ := crypto.GenerateKey()
pub1 := &prv1.PublicKey
ss0, err := ecies.ImportECDSA(prv0).GenerateShared(ecies.ImportECDSAPublic(pub1), sskLen, sskLen)
if err != nil {
return
}
ss1, err := ecies.ImportECDSA(prv1).GenerateShared(ecies.ImportECDSAPublic(pub0), sskLen, sskLen)
if err != nil {
return
}
t.Logf("Secret:\n%v %x\n%v %x", len(ss0), ss0, len(ss0), ss1)
if !bytes.Equal(ss0, ss1) {
t.Errorf("dont match :(")
}
}
func TestEncHandshake(t *testing.T) {
defer testlog(t).detach()
prv0, _ := crypto.GenerateKey()
prv1, _ := crypto.GenerateKey()
rw0, rw1 := net.Pipe()
secrets := make(chan secrets)
go func() {
pub1s, _ := exportPublicKey(&prv1.PublicKey)
s, err := outboundEncHandshake(rw0, prv0, pub1s, nil)
if err != nil {
t.Errorf("outbound side error: %v", err)
}
id1 := discover.PubkeyID(&prv1.PublicKey)
if s.RemoteID != id1 {
t.Errorf("outbound side remote ID mismatch")
}
secrets <- s
}()
go func() {
s, err := inboundEncHandshake(rw1, prv1, nil)
if err != nil {
t.Errorf("inbound side error: %v", err)
}
id0 := discover.PubkeyID(&prv0.PublicKey)
if s.RemoteID != id0 {
t.Errorf("inbound side remote ID mismatch")
}
secrets <- s
}()
// get computed secrets from both sides
t1, t2 := <-secrets, <-secrets
// don't compare remote node IDs
t1.RemoteID, t2.RemoteID = discover.NodeID{}, discover.NodeID{}
// flip MACs on one of them so they compare equal
t1.EgressMAC, t1.IngressMAC = t1.IngressMAC, t1.EgressMAC
if !reflect.DeepEqual(t1, t2) {
t.Errorf("secrets mismatch:\n t1: %#v\n t2: %#v", t1, t2)
}
}
func TestSetupConn(t *testing.T) {
prv0, _ := crypto.GenerateKey()
prv1, _ := crypto.GenerateKey()
node0 := &discover.Node{
ID: discover.PubkeyID(&prv0.PublicKey),
IP: net.IP{1, 2, 3, 4},
TCPPort: 33,
}
node1 := &discover.Node{
ID: discover.PubkeyID(&prv1.PublicKey),
IP: net.IP{5, 6, 7, 8},
TCPPort: 44,
}
hs0 := &protoHandshake{
Version: baseProtocolVersion,
ID: node0.ID,
Caps: []Cap{{"a", 0}, {"b", 2}},
}
hs1 := &protoHandshake{
Version: baseProtocolVersion,
ID: node1.ID,
Caps: []Cap{{"c", 1}, {"d", 3}},
}
fd0, fd1 := net.Pipe()
done := make(chan struct{})
go func() {
defer close(done)
conn0, err := setupConn(fd0, prv0, hs0, node1)
if err != nil {
t.Errorf("outbound side error: %v", err)
return
}
if conn0.ID != node1.ID {
t.Errorf("outbound conn id mismatch: got %v, want %v", conn0.ID, node1.ID)
}
if !reflect.DeepEqual(conn0.Caps, hs1.Caps) {
t.Errorf("outbound caps mismatch: got %v, want %v", conn0.Caps, hs1.Caps)
}
}()
conn1, err := setupConn(fd1, prv1, hs1, nil)
if err != nil {
t.Fatalf("inbound side error: %v", err)
}
if conn1.ID != node0.ID {
t.Errorf("inbound conn id mismatch: got %v, want %v", conn1.ID, node0.ID)
}
if !reflect.DeepEqual(conn1.Caps, hs0.Caps) {
t.Errorf("inbound caps mismatch: got %v, want %v", conn1.Caps, hs0.Caps)
}
<-done
}
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