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package p2p
import (
"bytes"
// "crypto/ecdsa"
// "crypto/elliptic"
// "crypto/rand"
"fmt"
"testing"
"github.com/ethereum/go-ethereum/crypto"
"github.com/obscuren/ecies"
)
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 TestCryptoHandshake(t *testing.T) {
var err error
var sessionToken []byte
prv0, _ := crypto.GenerateKey() // = ecdsa.GenerateKey(crypto.S256(), rand.Reader)
pub0 := &prv0.PublicKey
prv1, _ := crypto.GenerateKey()
pub1 := &prv1.PublicKey
var initiator, receiver *cryptoId
if initiator, err = newCryptoId(&peerId{crypto.FromECDSA(prv0), crypto.FromECDSAPub(pub0)}); err != nil {
return
}
if receiver, err = newCryptoId(&peerId{crypto.FromECDSA(prv1), crypto.FromECDSAPub(pub1)}); err != nil {
return
}
// simulate handshake by feeding output to input
// initiator sends handshake 'auth'
auth, initNonce, randomPrivKey, _, err := initiator.startHandshake(receiver.pubKeyS, sessionToken)
if err != nil {
t.Errorf("%v", err)
}
// receiver reads auth and responds with response
response, remoteRecNonce, remoteInitNonce, remoteRandomPrivKey, remoteInitRandomPubKey, err := receiver.respondToHandshake(auth, crypto.FromECDSAPub(pub0), sessionToken)
if err != nil {
t.Errorf("%v", err)
}
// initiator reads receiver's response and the key exchange completes
recNonce, remoteRandomPubKey, _, err := initiator.completeHandshake(response)
if err != nil {
t.Errorf("%v", err)
}
// now both parties should have the same session parameters
initSessionToken, initSecretRW, err := initiator.newSession(initNonce, recNonce, auth, randomPrivKey, remoteRandomPubKey)
if err != nil {
t.Errorf("%v", err)
}
recSessionToken, recSecretRW, err := receiver.newSession(remoteInitNonce, remoteRecNonce, auth, remoteRandomPrivKey, remoteInitRandomPubKey)
if err != nil {
t.Errorf("%v", err)
}
fmt.Printf("\nauth %x\ninitNonce %x\nresponse%x\nremoteRecNonce %x\nremoteInitNonce %x\nremoteRandomPubKey %x\nrecNonce %x\nremoteInitRandomPubKey %x\ninitSessionToken %x\n\n", auth, initNonce, response, remoteRecNonce, remoteInitNonce, remoteRandomPubKey, recNonce, remoteInitRandomPubKey, initSessionToken)
if !bytes.Equal(initNonce, remoteInitNonce) {
t.Errorf("nonces do not match")
}
if !bytes.Equal(recNonce, remoteRecNonce) {
t.Errorf("receiver nonces do not match")
}
if !bytes.Equal(initSessionToken, recSessionToken) {
t.Errorf("session tokens do not match")
}
// aesSecret, macSecret, egressMac, ingressMac
if !bytes.Equal(initSecretRW.aesSecret, recSecretRW.aesSecret) {
t.Errorf("AES secrets do not match")
}
if !bytes.Equal(initSecretRW.macSecret, recSecretRW.macSecret) {
t.Errorf("macSecrets do not match")
}
if !bytes.Equal(initSecretRW.egressMac, recSecretRW.egressMac) {
t.Errorf("egressMacs do not match")
}
if !bytes.Equal(initSecretRW.ingressMac, recSecretRW.ingressMac) {
t.Errorf("ingressMacs do not match")
}
}
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