// Copyright 2015 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 . package p2p import ( "bytes" "crypto/rand" "errors" "fmt" "io" "io/ioutil" "net" "reflect" "strings" "sync" "testing" "time" "github.com/davecgh/go-spew/spew" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/crypto/ecies" "github.com/ethereum/go-ethereum/crypto/sha3" "github.com/ethereum/go-ethereum/p2p/discover" "github.com/ethereum/go-ethereum/rlp" ) 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) { for i := 0; i < 10; i++ { start := time.Now() if err := testEncHandshake(nil); err != nil { t.Fatalf("i=%d %v", i, err) } t.Logf("(without token) %d %v\n", i+1, time.Since(start)) } for i := 0; i < 10; i++ { tok := make([]byte, shaLen) rand.Reader.Read(tok) start := time.Now() if err := testEncHandshake(tok); err != nil { t.Fatalf("i=%d %v", i, err) } t.Logf("(with token) %d %v\n", i+1, time.Since(start)) } } func testEncHandshake(token []byte) error { type result struct { side string id discover.NodeID err error } var ( prv0, _ = crypto.GenerateKey() prv1, _ = crypto.GenerateKey() fd0, fd1 = net.Pipe() c0, c1 = newRLPX(fd0).(*rlpx), newRLPX(fd1).(*rlpx) output = make(chan result) ) go func() { r := result{side: "initiator"} defer func() { output <- r }() defer fd0.Close() dest := &discover.Node{ID: discover.PubkeyID(&prv1.PublicKey)} r.id, r.err = c0.doEncHandshake(prv0, dest) if r.err != nil { return } id1 := discover.PubkeyID(&prv1.PublicKey) if r.id != id1 { r.err = fmt.Errorf("remote ID mismatch: got %v, want: %v", r.id, id1) } }() go func() { r := result{side: "receiver"} defer func() { output <- r }() defer fd1.Close() r.id, r.err = c1.doEncHandshake(prv1, nil) if r.err != nil { return } id0 := discover.PubkeyID(&prv0.PublicKey) if r.id != id0 { r.err = fmt.Errorf("remote ID mismatch: got %v, want: %v", r.id, id0) } }() // wait for results from both sides r1, r2 := <-output, <-output if r1.err != nil { return fmt.Errorf("%s side error: %v", r1.side, r1.err) } if r2.err != nil { return fmt.Errorf("%s side error: %v", r2.side, r2.err) } // compare derived secrets if !reflect.DeepEqual(c0.rw.egressMAC, c1.rw.ingressMAC) { return fmt.Errorf("egress mac mismatch:\n c0.rw: %#v\n c1.rw: %#v", c0.rw.egressMAC, c1.rw.ingressMAC) } if !reflect.DeepEqual(c0.rw.ingressMAC, c1.rw.egressMAC) { return fmt.Errorf("ingress mac mismatch:\n c0.rw: %#v\n c1.rw: %#v", c0.rw.ingressMAC, c1.rw.egressMAC) } if !reflect.DeepEqual(c0.rw.enc, c1.rw.enc) { return fmt.Errorf("enc cipher mismatch:\n c0.rw: %#v\n c1.rw: %#v", c0.rw.enc, c1.rw.enc) } if !reflect.DeepEqual(c0.rw.dec, c1.rw.dec) { return fmt.Errorf("dec cipher mismatch:\n c0.rw: %#v\n c1.rw: %#v", c0.rw.dec, c1.rw.dec) } return nil } func TestProtocolHandshake(t *testing.T) { var ( prv0, _ = crypto.GenerateKey() node0 = &discover.Node{ID: discover.PubkeyID(&prv0.PublicKey), IP: net.IP{1, 2, 3, 4}, TCP: 33} hs0 = &protoHandshake{Version: 3, ID: node0.ID, Caps: []Cap{{"a", 0}, {"b", 2}}} prv1, _ = crypto.GenerateKey() node1 = &discover.Node{ID: discover.PubkeyID(&prv1.PublicKey), IP: net.IP{5, 6, 7, 8}, TCP: 44} hs1 = &protoHandshake{Version: 3, ID: node1.ID, Caps: []Cap{{"c", 1}, {"d", 3}}} wg sync.WaitGroup ) fd0, fd1, err := tcpPipe() if err != nil { t.Fatal(err) } wg.Add(2) go func() { defer wg.Done() defer fd0.Close() rlpx := newRLPX(fd0) remid, err := rlpx.doEncHandshake(prv0, node1) if err != nil { t.Errorf("dial side enc handshake failed: %v", err) return } if remid != node1.ID { t.Errorf("dial side remote id mismatch: got %v, want %v", remid, node1.ID) return } phs, err := rlpx.doProtoHandshake(hs0) if err != nil { t.Errorf("dial side proto handshake error: %v", err) return } phs.Rest = nil if !reflect.DeepEqual(phs, hs1) { t.Errorf("dial side proto handshake mismatch:\ngot: %s\nwant: %s\n", spew.Sdump(phs), spew.Sdump(hs1)) return } rlpx.close(DiscQuitting) }() go func() { defer wg.Done() defer fd1.Close() rlpx := newRLPX(fd1) remid, err := rlpx.doEncHandshake(prv1, nil) if err != nil { t.Errorf("listen side enc handshake failed: %v", err) return } if remid != node0.ID { t.Errorf("listen side remote id mismatch: got %v, want %v", remid, node0.ID) return } phs, err := rlpx.doProtoHandshake(hs1) if err != nil { t.Errorf("listen side proto handshake error: %v", err) return } phs.Rest = nil if !reflect.DeepEqual(phs, hs0) { t.Errorf("listen side proto handshake mismatch:\ngot: %s\nwant: %s\n", spew.Sdump(phs), spew.Sdump(hs0)) return } if err := ExpectMsg(rlpx, discMsg, []DiscReason{DiscQuitting}); err != nil { t.Errorf("error receiving disconnect: %v", err) } }() wg.Wait() } func TestProtocolHandshakeErrors(t *testing.T) { our := &protoHandshake{Version: 3, Caps: []Cap{{"foo", 2}, {"bar", 3}}, Name: "quux"} tests := []struct { code uint64 msg interface{} err error }{ { code: discMsg, msg: []DiscReason{DiscQuitting}, err: DiscQuitting, }, { code: 0x989898, msg: []byte{1}, err: errors.New("expected handshake, got 989898"), }, { code: handshakeMsg, msg: make([]byte, baseProtocolMaxMsgSize+2), err: errors.New("message too big"), }, { code: handshakeMsg, msg: []byte{1, 2, 3}, err: newPeerError(errInvalidMsg, "(code 0) (size 4) rlp: expected input list for p2p.protoHandshake"), }, { code: handshakeMsg, msg: &protoHandshake{Version: 3}, err: DiscInvalidIdentity, }, } for i, test := range tests { p1, p2 := MsgPipe() go Send(p1, test.code, test.msg) _, err := readProtocolHandshake(p2, our) if !reflect.DeepEqual(err, test.err) { t.Errorf("test %d: error mismatch: got %q, want %q", i, err, test.err) } } } func TestRLPXFrameFake(t *testing.T) { buf := new(bytes.Buffer) hash := fakeHash([]byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}) rw := newRLPXFrameRW(buf, secrets{ AES: crypto.Keccak256(), MAC: crypto.Keccak256(), IngressMAC: hash, EgressMAC: hash, }) golden := unhex(` 00828ddae471818bb0bfa6b551d1cb42 01010101010101010101010101010101 ba628a4ba590cb43f7848f41c4382885 01010101010101010101010101010101 `) // Check WriteMsg. This puts a message into the buffer. if err := Send(rw, 8, []uint{1, 2, 3, 4}); err != nil { t.Fatalf("WriteMsg error: %v", err) } written := buf.Bytes() if !bytes.Equal(written, golden) { t.Fatalf("output mismatch:\n got: %x\n want: %x", written, golden) } // Check ReadMsg. It reads the message encoded by WriteMsg, which // is equivalent to the golden message above. msg, err := rw.ReadMsg() if err != nil { t.Fatalf("ReadMsg error: %v", err) } if msg.Size != 5 { t.Errorf("msg size mismatch: got %d, want %d", msg.Size, 5) } if msg.Code != 8 { t.Errorf("msg code mismatch: got %d, want %d", msg.Code, 8) } payload, _ := ioutil.ReadAll(msg.Payload) wantPayload := unhex("C401020304") if !bytes.Equal(payload, wantPayload) { t.Errorf("msg payload mismatch:\ngot %x\nwant %x", payload, wantPayload) } } type fakeHash []byte func (fakeHash) Write(p []byte) (int, error) { return len(p), nil } func (fakeHash) Reset() {} func (fakeHash) BlockSize() int { return 0 } func (h fakeHash) Size() int { return len(h) } func (h fakeHash) Sum(b []byte) []byte { return append(b, h...) } func TestRLPXFrameRW(t *testing.T) { var ( aesSecret = make([]byte, 16) macSecret = make([]byte, 16) egressMACinit = make([]byte, 32) ingressMACinit = make([]byte, 32) ) for _, s := range [][]byte{aesSecret, macSecret, egressMACinit, ingressMACinit} { rand.Read(s) } conn := new(bytes.Buffer) s1 := secrets{ AES: aesSecret, MAC: macSecret, EgressMAC: sha3.NewKeccak256(), IngressMAC: sha3.NewKeccak256(), } s1.EgressMAC.Write(egressMACinit) s1.IngressMAC.Write(ingressMACinit) rw1 := newRLPXFrameRW(conn, s1) s2 := secrets{ AES: aesSecret, MAC: macSecret, EgressMAC: sha3.NewKeccak256(), IngressMAC: sha3.NewKeccak256(), } s2.EgressMAC.Write(ingressMACinit) s2.IngressMAC.Write(egressMACinit) rw2 := newRLPXFrameRW(conn, s2) // send some messages for i := 0; i < 10; i++ { // write message into conn buffer wmsg := []interface{}{"foo", "bar", strings.Repeat("test", i)} err := Send(rw1, uint64(i), wmsg) if err != nil { t.Fatalf("WriteMsg error (i=%d): %v", i, err) } // read message that rw1 just wrote msg, err := rw2.ReadMsg() if err != nil { t.Fatalf("ReadMsg error (i=%d): %v", i, err) } if msg.Code != uint64(i) { t.Fatalf("msg code mismatch: got %d, want %d", msg.Code, i) } payload, _ := ioutil.ReadAll(msg.Payload) wantPayload, _ := rlp.EncodeToBytes(wmsg) if !bytes.Equal(payload, wantPayload) { t.Fatalf("msg payload mismatch:\ngot %x\nwant %x", payload, wantPayload) } } } type handshakeAuthTest struct { input string isPlain bool wantVersion uint wantRest []rlp.RawValue } var eip8HandshakeAuthTests = []handshakeAuthTest{ // (Auth₁) RLPx v4 plain encoding { input: ` 048ca79ad18e4b0659fab4853fe5bc58eb83992980f4c9cc147d2aa31532efd29a3d3dc6a3d89eaf 913150cfc777ce0ce4af2758bf4810235f6e6ceccfee1acc6b22c005e9e3a49d6448610a58e98744 ba3ac0399e82692d67c1f58849050b3024e21a52c9d3b01d871ff5f210817912773e610443a9ef14 2e91cdba0bd77b5fdf0769b05671fc35f83d83e4d3b0b000c6b2a1b1bba89e0fc51bf4e460df3105 c444f14be226458940d6061c296350937ffd5e3acaceeaaefd3c6f74be8e23e0f45163cc7ebd7622 0f0128410fd05250273156d548a414444ae2f7dea4dfca2d43c057adb701a715bf59f6fb66b2d1d2 0f2c703f851cbf5ac47396d9ca65b6260bd141ac4d53e2de585a73d1750780db4c9ee4cd4d225173 a4592ee77e2bd94d0be3691f3b406f9bba9b591fc63facc016bfa8 `, isPlain: true, wantVersion: 4, }, // (Auth₂) EIP-8 encoding { input: ` 01b304ab7578555167be8154d5cc456f567d5ba302662433674222360f08d5f1534499d3678b513b 0fca474f3a514b18e75683032eb63fccb16c156dc6eb2c0b1593f0d84ac74f6e475f1b8d56116b84 9634a8c458705bf83a626ea0384d4d7341aae591fae42ce6bd5c850bfe0b999a694a49bbbaf3ef6c da61110601d3b4c02ab6c30437257a6e0117792631a4b47c1d52fc0f8f89caadeb7d02770bf999cc 147d2df3b62e1ffb2c9d8c125a3984865356266bca11ce7d3a688663a51d82defaa8aad69da39ab6 d5470e81ec5f2a7a47fb865ff7cca21516f9299a07b1bc63ba56c7a1a892112841ca44b6e0034dee 70c9adabc15d76a54f443593fafdc3b27af8059703f88928e199cb122362a4b35f62386da7caad09 c001edaeb5f8a06d2b26fb6cb93c52a9fca51853b68193916982358fe1e5369e249875bb8d0d0ec3 6f917bc5e1eafd5896d46bd61ff23f1a863a8a8dcd54c7b109b771c8e61ec9c8908c733c0263440e 2aa067241aaa433f0bb053c7b31a838504b148f570c0ad62837129e547678c5190341e4f1693956c 3bf7678318e2d5b5340c9e488eefea198576344afbdf66db5f51204a6961a63ce072c8926c `, wantVersion: 4, wantRest: []rlp.RawValue{}, }, // (Auth₃) RLPx v4 EIP-8 encoding with version 56, additional list elements { input: ` 01b8044c6c312173685d1edd268aa95e1d495474c6959bcdd10067ba4c9013df9e40ff45f5bfd6f7 2471f93a91b493f8e00abc4b80f682973de715d77ba3a005a242eb859f9a211d93a347fa64b597bf 280a6b88e26299cf263b01b8dfdb712278464fd1c25840b995e84d367d743f66c0e54a586725b7bb f12acca27170ae3283c1073adda4b6d79f27656993aefccf16e0d0409fe07db2dc398a1b7e8ee93b cd181485fd332f381d6a050fba4c7641a5112ac1b0b61168d20f01b479e19adf7fdbfa0905f63352 bfc7e23cf3357657455119d879c78d3cf8c8c06375f3f7d4861aa02a122467e069acaf513025ff19 6641f6d2810ce493f51bee9c966b15c5043505350392b57645385a18c78f14669cc4d960446c1757 1b7c5d725021babbcd786957f3d17089c084907bda22c2b2675b4378b114c601d858802a55345a15 116bc61da4193996187ed70d16730e9ae6b3bb8787ebcaea1871d850997ddc08b4f4ea668fbf3740 7ac044b55be0908ecb94d4ed172ece66fd31bfdadf2b97a8bc690163ee11f5b575a4b44e36e2bfb2 f0fce91676fd64c7773bac6a003f481fddd0bae0a1f31aa27504e2a533af4cef3b623f4791b2cca6 d490 `, wantVersion: 56, wantRest: []rlp.RawValue{{0x01}, {0x02}, {0xC2, 0x04, 0x05}}, }, } type handshakeAckTest struct { input string wantVersion uint wantRest []rlp.RawValue } var eip8HandshakeRespTests = []handshakeAckTest{ // (Ack₁) RLPx v4 plain encoding { input: ` 049f8abcfa9c0dc65b982e98af921bc0ba6e4243169348a236abe9df5f93aa69d99cadddaa387662 b0ff2c08e9006d5a11a278b1b3331e5aaabf0a32f01281b6f4ede0e09a2d5f585b26513cb794d963 5a57563921c04a9090b4f14ee42be1a5461049af4ea7a7f49bf4c97a352d39c8d02ee4acc416388c 1c66cec761d2bc1c72da6ba143477f049c9d2dde846c252c111b904f630ac98e51609b3b1f58168d dca6505b7196532e5f85b259a20c45e1979491683fee108e9660edbf38f3add489ae73e3dda2c71b d1497113d5c755e942d1 `, wantVersion: 4, }, // (Ack₂) EIP-8 encoding { input: ` 01ea0451958701280a56482929d3b0757da8f7fbe5286784beead59d95089c217c9b917788989470 b0e330cc6e4fb383c0340ed85fab836ec9fb8a49672712aeabbdfd1e837c1ff4cace34311cd7f4de 05d59279e3524ab26ef753a0095637ac88f2b499b9914b5f64e143eae548a1066e14cd2f4bd7f814 c4652f11b254f8a2d0191e2f5546fae6055694aed14d906df79ad3b407d94692694e259191cde171 ad542fc588fa2b7333313d82a9f887332f1dfc36cea03f831cb9a23fea05b33deb999e85489e645f 6aab1872475d488d7bd6c7c120caf28dbfc5d6833888155ed69d34dbdc39c1f299be1057810f34fb e754d021bfca14dc989753d61c413d261934e1a9c67ee060a25eefb54e81a4d14baff922180c395d 3f998d70f46f6b58306f969627ae364497e73fc27f6d17ae45a413d322cb8814276be6ddd13b885b 201b943213656cde498fa0e9ddc8e0b8f8a53824fbd82254f3e2c17e8eaea009c38b4aa0a3f306e8 797db43c25d68e86f262e564086f59a2fc60511c42abfb3057c247a8a8fe4fb3ccbadde17514b7ac 8000cdb6a912778426260c47f38919a91f25f4b5ffb455d6aaaf150f7e5529c100ce62d6d92826a7 1778d809bdf60232ae21ce8a437eca8223f45ac37f6487452ce626f549b3b5fdee26afd2072e4bc7 5833c2464c805246155289f4 `, wantVersion: 4, wantRest: []rlp.RawValue{}, }, // (Ack₃) EIP-8 encoding with version 57, additional list elements { input: ` 01f004076e58aae772bb101ab1a8e64e01ee96e64857ce82b1113817c6cdd52c09d26f7b90981cd7 ae835aeac72e1573b8a0225dd56d157a010846d888dac7464baf53f2ad4e3d584531fa203658fab0 3a06c9fd5e35737e417bc28c1cbf5e5dfc666de7090f69c3b29754725f84f75382891c561040ea1d dc0d8f381ed1b9d0d4ad2a0ec021421d847820d6fa0ba66eaf58175f1b235e851c7e2124069fbc20 2888ddb3ac4d56bcbd1b9b7eab59e78f2e2d400905050f4a92dec1c4bdf797b3fc9b2f8e84a482f3 d800386186712dae00d5c386ec9387a5e9c9a1aca5a573ca91082c7d68421f388e79127a5177d4f8 590237364fd348c9611fa39f78dcdceee3f390f07991b7b47e1daa3ebcb6ccc9607811cb17ce51f1 c8c2c5098dbdd28fca547b3f58c01a424ac05f869f49c6a34672ea2cbbc558428aa1fe48bbfd6115 8b1b735a65d99f21e70dbc020bfdface9f724a0d1fb5895db971cc81aa7608baa0920abb0a565c9c 436e2fd13323428296c86385f2384e408a31e104670df0791d93e743a3a5194ee6b076fb6323ca59 3011b7348c16cf58f66b9633906ba54a2ee803187344b394f75dd2e663a57b956cb830dd7a908d4f 39a2336a61ef9fda549180d4ccde21514d117b6c6fd07a9102b5efe710a32af4eeacae2cb3b1dec0 35b9593b48b9d3ca4c13d245d5f04169b0b1 `, wantVersion: 57, wantRest: []rlp.RawValue{{0x06}, {0xC2, 0x07, 0x08}, {0x81, 0xFA}}, }, } func TestHandshakeForwardCompatibility(t *testing.T) { var ( keyA, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee") keyB, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") pubA = crypto.FromECDSAPub(&keyA.PublicKey)[1:] pubB = crypto.FromECDSAPub(&keyB.PublicKey)[1:] ephA, _ = crypto.HexToECDSA("869d6ecf5211f1cc60418a13b9d870b22959d0c16f02bec714c960dd2298a32d") ephB, _ = crypto.HexToECDSA("e238eb8e04fee6511ab04c6dd3c89ce097b11f25d584863ac2b6d5b35b1847e4") ephPubA = crypto.FromECDSAPub(&ephA.PublicKey)[1:] ephPubB = crypto.FromECDSAPub(&ephB.PublicKey)[1:] nonceA = unhex("7e968bba13b6c50e2c4cd7f241cc0d64d1ac25c7f5952df231ac6a2bda8ee5d6") nonceB = unhex("559aead08264d5795d3909718cdd05abd49572e84fe55590eef31a88a08fdffd") _, _, _, _ = pubA, pubB, ephPubA, ephPubB authSignature = unhex("299ca6acfd35e3d72d8ba3d1e2b60b5561d5af5218eb5bc182045769eb4226910a301acae3b369fffc4a4899d6b02531e89fd4fe36a2cf0d93607ba470b50f7800") _ = authSignature ) makeAuth := func(test handshakeAuthTest) *authMsgV4 { msg := &authMsgV4{Version: test.wantVersion, Rest: test.wantRest, gotPlain: test.isPlain} copy(msg.Signature[:], authSignature) copy(msg.InitiatorPubkey[:], pubA) copy(msg.Nonce[:], nonceA) return msg } makeAck := func(test handshakeAckTest) *authRespV4 { msg := &authRespV4{Version: test.wantVersion, Rest: test.wantRest} copy(msg.RandomPubkey[:], ephPubB) copy(msg.Nonce[:], nonceB) return msg } // check auth msg parsing for _, test := range eip8HandshakeAuthTests { r := bytes.NewReader(unhex(test.input)) msg := new(authMsgV4) ciphertext, err := readHandshakeMsg(msg, encAuthMsgLen, keyB, r) if err != nil { t.Errorf("error for input %x:\n %v", unhex(test.input), err) continue } if !bytes.Equal(ciphertext, unhex(test.input)) { t.Errorf("wrong ciphertext for input %x:\n %x", unhex(test.input), ciphertext) } want := makeAuth(test) if !reflect.DeepEqual(msg, want) { t.Errorf("wrong msg for input %x:\ngot %s\nwant %s", unhex(test.input), spew.Sdump(msg), spew.Sdump(want)) } } // check auth resp parsing for _, test := range eip8HandshakeRespTests { input := unhex(test.input) r := bytes.NewReader(input) msg := new(authRespV4) ciphertext, err := readHandshakeMsg(msg, encAuthRespLen, keyA, r) if err != nil { t.Errorf("error for input %x:\n %v", input, err) continue } if !bytes.Equal(ciphertext, input) { t.Errorf("wrong ciphertext for input %x:\n %x", input, err) } want := makeAck(test) if !reflect.DeepEqual(msg, want) { t.Errorf("wrong msg for input %x:\ngot %s\nwant %s", input, spew.Sdump(msg), spew.Sdump(want)) } } // check derivation for (Auth₂, Ack₂) on recipient side var ( hs = &encHandshake{ initiator: false, respNonce: nonceB, randomPrivKey: ecies.ImportECDSA(ephB), } authCiphertext = unhex(eip8HandshakeAuthTests[1].input) authRespCiphertext = unhex(eip8HandshakeRespTests[1].input) authMsg = makeAuth(eip8HandshakeAuthTests[1]) wantAES = unhex("80e8632c05fed6fc2a13b0f8d31a3cf645366239170ea067065aba8e28bac487") wantMAC = unhex("2ea74ec5dae199227dff1af715362700e989d889d7a493cb0639691efb8e5f98") wantFooIngressHash = unhex("0c7ec6340062cc46f5e9f1e3cf86f8c8c403c5a0964f5df0ebd34a75ddc86db5") ) if err := hs.handleAuthMsg(authMsg, keyB); err != nil { t.Fatalf("handleAuthMsg: %v", err) } derived, err := hs.secrets(authCiphertext, authRespCiphertext) if err != nil { t.Fatalf("secrets: %v", err) } if !bytes.Equal(derived.AES, wantAES) { t.Errorf("aes-secret mismatch:\ngot %x\nwant %x", derived.AES, wantAES) } if !bytes.Equal(derived.MAC, wantMAC) { t.Errorf("mac-secret mismatch:\ngot %x\nwant %x", derived.MAC, wantMAC) } io.WriteString(derived.IngressMAC, "foo") fooIngressHash := derived.IngressMAC.Sum(nil) if !bytes.Equal(fooIngressHash, wantFooIngressHash) { t.Errorf("ingress-mac('foo') mismatch:\ngot %x\nwant %x", fooIngressHash, wantFooIngressHash) } } // tcpPipe creates an in process full duplex pipe based on a localhost TCP socket func tcpPipe() (net.Conn, net.Conn, error) { l, err := net.Listen("tcp", "127.0.0.1:0") if err != nil { return nil, nil, err } defer l.Close() var aconn net.Conn aerr := make(chan error, 1) go func() { var err error aconn, err = l.Accept() aerr <- err }() dconn, err := net.Dial("tcp", l.Addr().String()) if err != nil { <-aerr return nil, nil, err } if err := <-aerr; err != nil { dconn.Close() return nil, nil, err } return aconn, dconn, nil }