erigon-pulse/p2p/discover/v5wire/crypto_test.go
2020-10-26 17:16:00 +01:00

125 lines
4.3 KiB
Go

// Copyright 2020 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package v5wire
import (
"bytes"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/sha256"
"reflect"
"strings"
"testing"
"github.com/ledgerwatch/turbo-geth/common/hexutil"
"github.com/ledgerwatch/turbo-geth/crypto"
"github.com/ledgerwatch/turbo-geth/p2p/enode"
)
func TestVector_ECDH(t *testing.T) {
var (
staticKey = hexPrivkey("0xfb757dc581730490a1d7a00deea65e9b1936924caaea8f44d476014856b68736")
publicKey = hexPubkey(crypto.S256(), "0x039961e4c2356d61bedb83052c115d311acb3a96f5777296dcf297351130266231")
want = hexutil.MustDecode("0x033b11a2a1f214567e1537ce5e509ffd9b21373247f2a3ff6841f4976f53165e7e")
)
result := ecdh(staticKey, publicKey)
check(t, "shared-secret", result, want)
}
func TestVector_KDF(t *testing.T) {
var (
ephKey = hexPrivkey("0xfb757dc581730490a1d7a00deea65e9b1936924caaea8f44d476014856b68736")
cdata = hexutil.MustDecode("0x000000000000000000000000000000006469736376350001010102030405060708090a0b0c00180102030405060708090a0b0c0d0e0f100000000000000000")
net = newHandshakeTest()
)
defer net.close()
destKey := &testKeyB.PublicKey
s := deriveKeys(sha256.New, ephKey, destKey, net.nodeA.id(), net.nodeB.id(), cdata)
t.Logf("ephemeral-key = %#x", ephKey.D)
t.Logf("dest-pubkey = %#x", EncodePubkey(destKey))
t.Logf("node-id-a = %#x", net.nodeA.id().Bytes())
t.Logf("node-id-b = %#x", net.nodeB.id().Bytes())
t.Logf("challenge-data = %#x", cdata)
check(t, "initiator-key", s.writeKey, hexutil.MustDecode("0xdccc82d81bd610f4f76d3ebe97a40571"))
check(t, "recipient-key", s.readKey, hexutil.MustDecode("0xac74bb8773749920b0d3a8881c173ec5"))
}
func TestVector_IDSignature(t *testing.T) {
var (
key = hexPrivkey("0xfb757dc581730490a1d7a00deea65e9b1936924caaea8f44d476014856b68736")
destID = enode.HexID("0xbbbb9d047f0488c0b5a93c1c3f2d8bafc7c8ff337024a55434a0d0555de64db9")
ephkey = hexutil.MustDecode("0x039961e4c2356d61bedb83052c115d311acb3a96f5777296dcf297351130266231")
cdata = hexutil.MustDecode("0x000000000000000000000000000000006469736376350001010102030405060708090a0b0c00180102030405060708090a0b0c0d0e0f100000000000000000")
)
sig, err := makeIDSignature(sha256.New(), key, cdata, ephkey, destID)
if err != nil {
t.Fatal(err)
}
t.Logf("static-key = %#x", key.D)
t.Logf("challenge-data = %#x", cdata)
t.Logf("ephemeral-pubkey = %#x", ephkey)
t.Logf("node-id-B = %#x", destID.Bytes())
expected := "0x94852a1e2318c4e5e9d422c98eaf19d1d90d876b29cd06ca7cb7546d0fff7b484fe86c09a064fe72bdbef73ba8e9c34df0cd2b53e9d65528c2c7f336d5dfc6e6"
check(t, "id-signature", sig, hexutil.MustDecode(expected))
}
func TestDeriveKeys(t *testing.T) {
t.Parallel()
var (
n1 = enode.ID{1}
n2 = enode.ID{2}
cdata = []byte{1, 2, 3, 4}
)
sec1 := deriveKeys(sha256.New, testKeyA, &testKeyB.PublicKey, n1, n2, cdata)
sec2 := deriveKeys(sha256.New, testKeyB, &testKeyA.PublicKey, n1, n2, cdata)
if sec1 == nil || sec2 == nil {
t.Fatal("key agreement failed")
}
if !reflect.DeepEqual(sec1, sec2) {
t.Fatalf("keys not equal:\n %+v\n %+v", sec1, sec2)
}
}
func check(t *testing.T, what string, x, y []byte) {
t.Helper()
if !bytes.Equal(x, y) {
t.Errorf("wrong %s: %#x != %#x", what, x, y)
} else {
t.Logf("%s = %#x", what, x)
}
}
func hexPrivkey(input string) *ecdsa.PrivateKey {
key, err := crypto.HexToECDSA(strings.TrimPrefix(input, "0x"))
if err != nil {
panic(err)
}
return key
}
func hexPubkey(curve elliptic.Curve, input string) *ecdsa.PublicKey {
key, err := DecodePubkey(curve, hexutil.MustDecode(input))
if err != nil {
panic(err)
}
return key
}