Delete old obfuscated2 package

mtglib/internal/obfuscated2/client_handshake.go

@@ -1,54 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/cipher"
-	"crypto/subtle"
-	"encoding/hex"
-	"fmt"
-	"io"
-)
-
-type clientHandhakeFrame struct {
-	handshakeFrame
-}
-
-func (c *clientHandhakeFrame) decryptor(secret []byte) cipher.Stream {
-	hasher := acquireSha256Hasher()
-	defer releaseSha256Hasher(hasher)
-
-	hasher.Write(c.key())
-	hasher.Write(secret)
-
-	return makeAesCtr(hasher.Sum(nil), c.iv())
-}
-
-func (c *clientHandhakeFrame) encryptor(secret []byte) cipher.Stream {
-	invertedHandshake := c.invert()
-
-	hasher := acquireSha256Hasher()
-	defer releaseSha256Hasher(hasher)
-
-	hasher.Write(invertedHandshake.key())
-	hasher.Write(secret)
-
-	return makeAesCtr(hasher.Sum(nil), invertedHandshake.iv())
-}
-
-func ClientHandshake(secret []byte, reader io.Reader) (int, cipher.Stream, cipher.Stream, error) {
-	handshake := clientHandhakeFrame{}
-
-	if _, err := io.ReadFull(reader, handshake.data[:]); err != nil {
-		return 0, nil, nil, fmt.Errorf("cannot read frame: %w", err)
-	}
-
-	decryptor := handshake.decryptor(secret)
-	encryptor := handshake.encryptor(secret)
-
-	decryptor.XORKeyStream(handshake.data[:], handshake.data[:])
-
-	if val := handshake.connectionType(); subtle.ConstantTimeCompare(handshakeConnectionType, val) != 1 {
-		return 0, nil, nil, fmt.Errorf("unsupported connection type: %s", hex.EncodeToString(val))
-	}
-
-	return handshake.dc(), encryptor, decryptor, nil
-}

mtglib/internal/obfuscated2/client_handshake_fuzz_internal_test.go

@@ -1,32 +0,0 @@
-package obfuscated2
-
-import (
-	"bytes"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-var FuzzClientHandshakeSecret = []byte{1, 2, 3}
-
-func FuzzClientHandshake(f *testing.F) {
-	f.Add([]byte{1, 2, 3})
-
-	f.Fuzz(func(t *testing.T, frame []byte) {
-		data := bytes.NewReader(frame)
-
-		if _, _, _, err := ClientHandshake(FuzzClientHandshakeSecret, data); err != nil {
-			return
-		}
-
-		handshake := clientHandhakeFrame{}
-		require.Len(t, frame, handshakeFrameLen)
-
-		copy(handshake.data[:], frame)
-
-		decryptor := handshake.decryptor(FuzzClientHandshakeSecret)
-		decryptor.XORKeyStream(handshake.data[:], handshake.data[:])
-
-		require.Equal(t, handshakeConnectionType, handshake.connectionType())
-	})
-}

mtglib/internal/obfuscated2/client_handshake_test.go

@@ -1,89 +0,0 @@
-package obfuscated2_test
-
-import (
-	"bytes"
-	"testing"
-
-	"github.com/9seconds/mtg/v2/internal/testlib"
-	"github.com/9seconds/mtg/v2/mtglib/internal/obfuscated2"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/mock"
-	"github.com/stretchr/testify/suite"
-)
-
-type ClientHandshakeTestSuite struct {
-	suite.Suite
-	SnapshotTestSuite
-}
-
-func (suite *ClientHandshakeTestSuite) SetupSuite() {
-	suite.NoError(suite.IngestSnapshots(".", "client-handshake-snapshot-"))
-}
-
-func (suite *ClientHandshakeTestSuite) TestCannotRead() {
-	buf := bytes.NewBuffer([]byte{1, 2, 3})
-	_, _, _, err := obfuscated2.ClientHandshake([]byte{1, 2, 3}, buf) //nolint: dogsled
-
-	suite.Error(err)
-}
-
-func (suite *ClientHandshakeTestSuite) TestOk() {
-	for nameV, snapshotV := range suite.snapshots {
-		snapshot := snapshotV
-
-		suite.T().Run(nameV, func(t *testing.T) {
-			buf := bytes.NewBuffer(snapshot.Frame.data)
-
-			dc, encryptor, decryptor, err := obfuscated2.ClientHandshake(
-				snapshot.Secret.data, buf)
-			assert.NoError(t, err)
-			assert.EqualValues(t, snapshot.DC, dc)
-
-			writeData := make([]byte, len(snapshot.Encrypted.Text.data))
-			readData := make([]byte, len(snapshot.Decrypted.Text.data))
-
-			connMock := &testlib.EssentialsConnMock{}
-			connMock.On("Read", mock.Anything).
-				Once().
-				Return(len(snapshot.Decrypted.Text.data), nil).
-				Run(func(args mock.Arguments) {
-					arr, ok := args.Get(0).([]byte)
-
-					suite.True(ok)
-					copy(arr, snapshot.Decrypted.Cipher.data)
-				})
-			connMock.On("Write", mock.Anything).
-				Once().
-				Return(len(snapshot.Encrypted.Text.data), nil).
-				Run(func(args mock.Arguments) {
-					arr, ok := args.Get(0).([]byte)
-
-					suite.True(ok)
-					copy(writeData, arr)
-				})
-
-			conn := obfuscated2.Conn{
-				Conn:      connMock,
-				Encryptor: encryptor,
-				Decryptor: decryptor,
-			}
-
-			n, err := conn.Read(readData)
-			assert.Equal(t, len(readData), n)
-			assert.NoError(t, err)
-			assert.Equal(t, snapshot.Decrypted.Text.data, readData)
-
-			n, err = conn.Write(snapshot.Encrypted.Text.data)
-			assert.Equal(t, len(writeData), n)
-			assert.NoError(t, err)
-			assert.Equal(t, snapshot.Encrypted.Cipher.data, writeData)
-
-			connMock.AssertExpectations(t)
-		})
-	}
-}
-
-func TestClientHandshake(t *testing.T) {
-	t.Parallel()
-	suite.Run(t, &ClientHandshakeTestSuite{})
-}

mtglib/internal/obfuscated2/conn.go

@@ -1,37 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/cipher"
-
-	"github.com/9seconds/mtg/v2/essentials"
-)
-
-type Conn struct {
-	essentials.Conn
-
-	Encryptor cipher.Stream
-	Decryptor cipher.Stream
-}
-
-func (c Conn) Read(p []byte) (int, error) {
-	n, err := c.Conn.Read(p)
-	if err != nil {
-		return n, err //nolint: wrapcheck
-	}
-
-	c.Decryptor.XORKeyStream(p, p[:n])
-
-	return n, nil
-}
-
-func (c Conn) Write(p []byte) (int, error) {
-	buf := acquireBytesBuffer()
-	defer releaseBytesBuffer(buf)
-
-	buf.Write(p)
-
-	payload := buf.Bytes()
-	c.Encryptor.XORKeyStream(payload, payload)
-
-	return c.Conn.Write(payload) //nolint: wrapcheck
-}

mtglib/internal/obfuscated2/handshake_frame.go

@@ -1,71 +0,0 @@
-package obfuscated2
-
-const (
-	// DefaultDC defines a number of the default DC to use. This value used
-	// only if a value from obfuscated2 handshake frame is 0 (default).
-	DefaultDC = 2
-
-	handshakeFrameLen = 64
-
-	handshakeFrameLenKey            = 32
-	handshakeFrameLenIV             = 16
-	handshakeFrameLenConnectionType = 4
-
-	handshakeFrameOffsetStart          = 8
-	handshakeFrameOffsetKey            = handshakeFrameOffsetStart
-	handshakeFrameOffsetIV             = handshakeFrameOffsetKey + handshakeFrameLenKey
-	handshakeFrameOffsetConnectionType = handshakeFrameOffsetIV + handshakeFrameLenIV
-	handshakeFrameOffsetDC             = handshakeFrameOffsetConnectionType + handshakeFrameLenConnectionType
-)
-
-// Connection-Type: Secure. We support only fake tls.
-var handshakeConnectionType = []byte{0xdd, 0xdd, 0xdd, 0xdd}
-
-// A structure of obfuscated2 handshake frame is following:
-//
-//	[frameOffsetFirst:frameOffsetKey:frameOffsetIV:frameOffsetMagic:frameOffsetDC:frameOffsetEnd].
-//
-//	- 8 bytes of noise
-//	- 32 bytes of AES Key
-//	- 16 bytes of AES IV
-//	- 4 bytes of 'connection type' - this has some setting like a connection type
-//	- 2 bytes of 'DC'. DC is little endian int16
-//	- 2 bytes of noise
-type handshakeFrame struct {
-	data [handshakeFrameLen]byte
-}
-
-func (h *handshakeFrame) dc() int {
-	idx := int16(h.data[handshakeFrameOffsetDC]) | int16(h.data[handshakeFrameOffsetDC+1])<<8 //nolint: lll // little endian for int16 is here
-
-	switch {
-	case idx > 0:
-		return int(idx)
-	case idx < 0:
-		return -int(idx)
-	default:
-		return DefaultDC
-	}
-}
-
-func (h *handshakeFrame) key() []byte {
-	return h.data[handshakeFrameOffsetKey:handshakeFrameOffsetIV]
-}
-
-func (h *handshakeFrame) iv() []byte {
-	return h.data[handshakeFrameOffsetIV:handshakeFrameOffsetConnectionType]
-}
-
-func (h *handshakeFrame) connectionType() []byte {
-	return h.data[handshakeFrameOffsetConnectionType:handshakeFrameOffsetDC]
-}
-
-func (h *handshakeFrame) invert() handshakeFrame {
-	copyFrame := *h
-
-	for i := range handshakeFrameLenKey + handshakeFrameLenIV {
-		copyFrame.data[handshakeFrameOffsetKey+i] = h.data[handshakeFrameOffsetConnectionType-1-i]
-	}
-
-	return copyFrame
-}

mtglib/internal/obfuscated2/handshake_frame_internal_test.go

@@ -1,73 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/rand"
-	"encoding/base64"
-	"strconv"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/suite"
-)
-
-type HandshakeFrameTestSuite struct {
-	suite.Suite
-}
-
-func (suite *HandshakeFrameTestSuite) Decode(value string) []byte {
-	v, err := base64.RawStdEncoding.DecodeString(value)
-	suite.NoError(err)
-
-	return v
-}
-
-func (suite *HandshakeFrameTestSuite) Encode(value []byte) string {
-	return base64.RawStdEncoding.EncodeToString(value)
-}
-
-func (suite *HandshakeFrameTestSuite) TestOk() {
-	hf := handshakeFrame{}
-	testFrame := suite.Decode(
-		"L9TmCzzxl9bPKODBpZeVM/qqNUxQ/axxBup1S2ymbIfUd6f7YSyzzM9EmTFv2/XzGqJGEHuj2zofmUGBLghu5g")
-	copy(hf.data[:], testFrame)
-
-	suite.Equal("zyjgwaWXlTP6qjVMUP2scQbqdUtspmyH1Hen+2Ess8w", suite.Encode(hf.key()))
-	suite.Equal("z0SZMW/b9fMaokYQe6PbOg", suite.Encode(hf.iv()))
-	suite.Equal("H5lBgQ", suite.Encode(hf.connectionType()))
-	suite.EqualValues(2094, hf.dc())
-
-	inverted := hf.invert()
-	suite.Equal("OtujexBGohrz9dtvMZlEz8yzLGH7p3fUh2ymbEt16gY", suite.Encode(inverted.key()))
-	suite.Equal("caz9UEw1qvozlZelweAozw", suite.Encode(inverted.iv()))
-	suite.Equal("H5lBgQ", suite.Encode(inverted.connectionType()))
-	suite.EqualValues(2094, inverted.dc())
-}
-
-func (suite *HandshakeFrameTestSuite) TestDC() {
-	testData := map[int16]int{
-		1:  1,
-		-1: 1,
-		0:  DefaultDC,
-	}
-
-	for k, v := range testData {
-		incoming := k
-		expected := v
-
-		suite.T().Run(strconv.Itoa(int(incoming)), func(t *testing.T) {
-			frame := handshakeFrame{}
-
-			rand.Read(frame.data[:]) //nolint: errcheck
-
-			frame.data[handshakeFrameOffsetDC] = byte(incoming)
-			frame.data[handshakeFrameOffsetDC+1] = byte(incoming >> 8)
-
-			assert.Equal(t, expected, frame.dc())
-		})
-	}
-}
-
-func TestHandshakeFrame(t *testing.T) {
-	t.Parallel()
-	suite.Run(t, &HandshakeFrameTestSuite{})
-}

mtglib/internal/obfuscated2/init_test.go

@@ -1,137 +0,0 @@
-package obfuscated2_test
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"encoding/base64"
-	"encoding/json"
-	"fmt"
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	"github.com/9seconds/mtg/v2/internal/testlib"
-	"github.com/9seconds/mtg/v2/mtglib/internal/obfuscated2"
-	"github.com/stretchr/testify/require"
-)
-
-type snapshotBytes struct {
-	data []byte
-}
-
-func (s snapshotBytes) MarshalText() ([]byte, error) {
-	if len(s.data) == 0 {
-		return nil, nil
-	}
-
-	return []byte(base64.RawStdEncoding.EncodeToString(s.data)), nil
-}
-
-func (s *snapshotBytes) UnmarshalText(data []byte) error {
-	val, err := base64.RawStdEncoding.DecodeString(string(data))
-	if err != nil {
-		return fmt.Errorf("cannot unmarshal %v: %w", len(val), err)
-	}
-
-	s.data = val
-
-	return nil
-}
-
-type Obfuscated2Snapshot struct {
-	Secret    snapshotBytes `json:"secret"`
-	Frame     snapshotBytes `json:"frame"`
-	DC        int16         `json:"dc"`
-	Encrypted struct {
-		Text   snapshotBytes `json:"text"`
-		Cipher snapshotBytes `json:"cipher"`
-	} `json:"encrypted"`
-	Decrypted struct {
-		Text   snapshotBytes `json:"text"`
-		Cipher snapshotBytes `json:"cipher"`
-	} `json:"decrypted"`
-}
-
-type SnapshotTestSuite struct {
-	snapshots map[string]*Obfuscated2Snapshot
-}
-
-type ServerHandshakeTestData struct {
-	connMock *testlib.EssentialsConnMock
-
-	proxyConn obfuscated2.Conn
-	encryptor cipher.Stream
-	decryptor cipher.Stream
-}
-
-func (suite *SnapshotTestSuite) IngestSnapshots(dirname, namePrefix string) error {
-	suite.snapshots = map[string]*Obfuscated2Snapshot{}
-
-	files, err := os.ReadDir(filepath.Join("testdata", dirname))
-	if err != nil {
-		return fmt.Errorf("cannot ingest snapshots: %w", err)
-	}
-
-	for _, v := range files {
-		if !strings.HasPrefix(v.Name(), namePrefix) {
-			continue
-		}
-
-		filename := filepath.Join("testdata", dirname, v.Name())
-
-		contents, err := os.ReadFile(filename)
-		if err != nil {
-			return fmt.Errorf("cannot read %s: %w", filename, err)
-		}
-
-		value := &Obfuscated2Snapshot{}
-
-		if err := json.Unmarshal(contents, value); err != nil {
-			return fmt.Errorf("cannot unmarshal %s: %w", filename, err)
-		}
-
-		suite.snapshots[v.Name()] = value
-	}
-
-	return nil
-}
-
-func NewServerHandshakeTestData(t *testing.T) ServerHandshakeTestData {
-	buf := &bytes.Buffer{}
-	connMock := &testlib.EssentialsConnMock{}
-
-	handshakeEnc, handshakeDec, err := obfuscated2.ServerHandshake(buf)
-	require.NoError(t, err)
-
-	serverEncrypted := buf.Bytes()
-	decBlock, _ := aes.NewCipher(serverEncrypted[8 : 8+32])
-	decryptor := cipher.NewCTR(decBlock, serverEncrypted[8+32:8+32+16])
-
-	serverDecrypted := make([]byte, len(serverEncrypted))
-	decryptor.XORKeyStream(serverDecrypted, serverEncrypted)
-
-	require.Equal(t, "3d3d3Q",
-		base64.RawStdEncoding.EncodeToString(serverDecrypted[8+32+16:8+32+16+4]))
-
-	serverEncryptedReverted := make([]byte, len(serverEncrypted))
-
-	for i := range 32 + 16 {
-		serverEncryptedReverted[8+i] = serverEncrypted[8+32+16-1-i]
-	}
-
-	encBlock, _ := aes.NewCipher(serverEncryptedReverted[8 : 8+32])
-	encryptor := cipher.NewCTR(encBlock, serverEncryptedReverted[8+32:8+32+16])
-
-	return ServerHandshakeTestData{
-		connMock: connMock,
-		proxyConn: obfuscated2.Conn{
-			Conn:      connMock,
-			Encryptor: handshakeEnc,
-			Decryptor: handshakeDec,
-		},
-		encryptor: encryptor,
-		decryptor: decryptor,
-	}
-}

mtglib/internal/obfuscated2/pools.go

@@ -1,39 +0,0 @@
-package obfuscated2
-
-import (
-	"bytes"
-	"crypto/sha256"
-	"hash"
-	"sync"
-)
-
-var (
-	sha256HasherPool = sync.Pool{
-		New: func() any {
-			return sha256.New()
-		},
-	}
-	bytesBufferPool = sync.Pool{
-		New: func() any {
-			return &bytes.Buffer{}
-		},
-	}
-)
-
-func acquireSha256Hasher() hash.Hash {
-	return sha256HasherPool.Get().(hash.Hash) //nolint: forcetypeassert
-}
-
-func releaseSha256Hasher(h hash.Hash) {
-	h.Reset()
-	sha256HasherPool.Put(h)
-}
-
-func acquireBytesBuffer() *bytes.Buffer {
-	return bytesBufferPool.Get().(*bytes.Buffer) //nolint: forcetypeassert
-}
-
-func releaseBytesBuffer(buf *bytes.Buffer) {
-	buf.Reset()
-	bytesBufferPool.Put(buf)
-}

mtglib/internal/obfuscated2/server_handshake.go

@@ -1,67 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/cipher"
-	"crypto/rand"
-	"encoding/binary"
-	"fmt"
-	"io"
-)
-
-type serverHandshakeFrame struct {
-	handshakeFrame
-}
-
-func (s *serverHandshakeFrame) decryptor() cipher.Stream {
-	invertedHandshake := s.invert()
-
-	return makeAesCtr(invertedHandshake.key(), invertedHandshake.iv())
-}
-
-func (s *serverHandshakeFrame) encryptor() cipher.Stream {
-	return makeAesCtr(s.key(), s.iv())
-}
-
-func ServerHandshake(writer io.Writer) (cipher.Stream, cipher.Stream, error) {
-	handshake := generateServerHanshakeFrame()
-	copyHandshake := handshake
-	encryptor := handshake.encryptor()
-	decryptor := handshake.decryptor()
-
-	encryptor.XORKeyStream(handshake.data[:], handshake.data[:])
-	copy(handshake.key(), copyHandshake.key())
-	copy(handshake.iv(), copyHandshake.iv())
-
-	if _, err := writer.Write(handshake.data[:]); err != nil {
-		return nil, nil, fmt.Errorf("cannot send a handshake frame to telegram: %w", err)
-	}
-
-	return encryptor, decryptor, nil
-}
-
-func generateServerHanshakeFrame() serverHandshakeFrame {
-	frame := serverHandshakeFrame{}
-
-	for {
-		if _, err := rand.Read(frame.data[:]); err != nil {
-			panic(err)
-		}
-
-		if frame.data[0] == 0xef { // taken from tg sources
-			continue
-		}
-
-		switch binary.LittleEndian.Uint32(frame.data[:4]) {
-		case 0x44414548, 0x54534f50, 0x20544547, 0x4954504f, 0xeeeeeeee: // taken from tg sources
-			continue
-		}
-
-		if frame.data[4]|frame.data[5]|frame.data[6]|frame.data[7] == 0 {
-			continue
-		}
-
-		copy(frame.connectionType(), handshakeConnectionType)
-
-		return frame
-	}
-}

mtglib/internal/obfuscated2/server_handshake_fuzz_internal_test.go

@@ -1,30 +0,0 @@
-package obfuscated2
-
-import (
-	"encoding/binary"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func FuzzServerGenerateHandshakeFrame(f *testing.F) {
-	f.Fuzz(func(t *testing.T, arg int) {
-		frame := generateServerHanshakeFrame()
-
-		assert.NotEqualValues(t, 0xef, frame.data[0])
-
-		firstBytes := binary.LittleEndian.Uint32(frame.data[:4])
-		assert.NotEqualValues(t, 0x44414548, firstBytes)
-		assert.NotEqualValues(t, 0x54534f50, firstBytes)
-		assert.NotEqualValues(t, 0x20544547, firstBytes)
-		assert.NotEqualValues(t, 0x4954504f, firstBytes)
-		assert.NotEqualValues(t, 0xeeeeeeee, firstBytes)
-
-		assert.NotEqualValues(
-			t,
-			0,
-			frame.data[4]|frame.data[5]|frame.data[6]|frame.data[7])
-
-		assert.Equal(t, handshakeConnectionType, frame.connectionType())
-	})
-}

mtglib/internal/obfuscated2/server_handshake_fuzz_test.go

@@ -1,58 +0,0 @@
-package obfuscated2_test
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/mock"
-)
-
-func FuzzServerSend(f *testing.F) {
-	f.Add([]byte{1, 2, 3, 4, 5})
-
-	f.Fuzz(func(t *testing.T, data []byte) {
-		handshakeData := NewServerHandshakeTestData(t)
-
-		handshakeData.connMock.
-			On("Write", mock.Anything).
-			Return(len(data), nil).
-			Once().
-			Run(func(args mock.Arguments) {
-				message := make([]byte, len(data))
-				handshakeData.decryptor.XORKeyStream(message, args.Get(0).([]byte)) //nolint: forcetypeassert
-				assert.Equal(t, message, data)
-			})
-
-		n, err := handshakeData.proxyConn.Write(data)
-
-		assert.EqualValues(t, len(data), n)
-		assert.NoError(t, err)
-		handshakeData.connMock.AssertExpectations(t)
-	})
-}
-
-func FuzzServerReceive(f *testing.F) {
-	f.Add([]byte{1, 2, 3, 4, 5})
-
-	f.Fuzz(func(t *testing.T, data []byte) {
-		handshakeData := NewServerHandshakeTestData(t)
-		buffer := make([]byte, len(data))
-
-		handshakeData.connMock.
-			On("Read", mock.Anything).
-			Return(len(data), nil).
-			Once().
-			Run(func(args mock.Arguments) {
-				message := make([]byte, len(data))
-				handshakeData.encryptor.XORKeyStream(message, data)
-				copy(args.Get(0).([]byte), message) //nolint: forcetypeassert
-			})
-
-		n, err := handshakeData.proxyConn.Read(buffer)
-
-		assert.EqualValues(t, len(data), n)
-		assert.NoError(t, err)
-		assert.Equal(t, data, buffer)
-		handshakeData.connMock.AssertExpectations(t)
-	})
-}

mtglib/internal/obfuscated2/server_handshake_test.go

@@ -1,65 +0,0 @@
-package obfuscated2_test
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/mock"
-	"github.com/stretchr/testify/suite"
-)
-
-type ServerHandshakeTestSuite struct {
-	suite.Suite
-
-	data ServerHandshakeTestData
-}
-
-func (suite *ServerHandshakeTestSuite) SetupTest() {
-	suite.data = NewServerHandshakeTestData(suite.T())
-}
-
-func (suite *ServerHandshakeTestSuite) TearDownTest() {
-	suite.data.connMock.AssertExpectations(suite.T())
-}
-
-func (suite *ServerHandshakeTestSuite) TestSendToTelegram() {
-	messageToTelegram := []byte{10, 11, 12, 13, 14, 'a'}
-
-	suite.data.connMock.
-		On("Write", mock.Anything).
-		Return(len(messageToTelegram), nil).
-		Once().
-		Run(func(args mock.Arguments) {
-			message := make([]byte, len(messageToTelegram))
-			suite.data.decryptor.XORKeyStream(message, args.Get(0).([]byte)) //nolint: forcetypeassert
-			suite.Equal(messageToTelegram, message)
-		})
-
-	n, err := suite.data.proxyConn.Write(messageToTelegram)
-	suite.EqualValues(len(messageToTelegram), n)
-	suite.NoError(err)
-}
-
-func (suite *ServerHandshakeTestSuite) TestRecieveFromTelegram() {
-	messageFromTelegram := []byte{10, 11, 12, 13, 14, 'a'}
-	buffer := make([]byte, len(messageFromTelegram))
-
-	suite.data.connMock.
-		On("Read", mock.Anything).
-		Return(len(messageFromTelegram), nil).
-		Once().
-		Run(func(args mock.Arguments) {
-			message := make([]byte, len(messageFromTelegram))
-			suite.data.encryptor.XORKeyStream(message, messageFromTelegram)
-			copy(args.Get(0).([]byte), message) //nolint: forcetypeassert
-		})
-
-	n, err := suite.data.proxyConn.Read(buffer)
-	suite.EqualValues(len(messageFromTelegram), n)
-	suite.NoError(err)
-	suite.Equal(messageFromTelegram, buffer)
-}
-
-func TestServerHandshake(t *testing.T) {
-	t.Parallel()
-	suite.Run(t, &ServerHandshakeTestSuite{})
-}

mtglib/internal/obfuscated2/testdata/client-handshake-snapshot-4529d55776e2d427.json

@@ -1,13 +0,0 @@
-{
-  "secret": "NnoYmu4Y+jHBkAVO/UqOlQ",
-  "frame": "gDcXwaMY4RwlR+nJw+ILDr123UJHHjjE/U5pF4m/Y04AmH7lEpEL6UYRnIYDbDlOHSDxc1ToziPvNlJJh8RMow",
-  "dc": 2,
-  "encrypted": {
-    "text": "AQIDBAUGBwgJCg",
-    "cipher": "wZV3TR39l9nRoQ"
-  },
-  "decrypted": {
-    "text": "4wZj6mUUew",
-    "cipher": "YWJjZGVmZw"
-  }
-}

mtglib/internal/obfuscated2/testdata/client-handshake-snapshot-585c944d672f60a2.json

@@ -1,13 +0,0 @@
-{
-  "secret": "NnoYmu4Y+jHBkAVO/UqOlQ",
-  "frame": "M2WyxeiwIQB+ZOFxNzSNHtu9OdESkfxv3JkKFimCxUoYA3BD/Ql9nXB/OIonCKLUKCcS0VzZ2P6/+5oQ9GI8YA",
-  "dc": 2,
-  "encrypted": {
-    "text": "AQIDBAUGBwgJCg",
-    "cipher": "tzAwrCz00odERg"
-  },
-  "decrypted": {
-    "text": "QkIvwGQDgA",
-    "cipher": "YWJjZGVmZw"
-  }
-}

mtglib/internal/obfuscated2/utils.go

@@ -1,15 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/aes"
-	"crypto/cipher"
-)
-
-func makeAesCtr(key, iv []byte) cipher.Stream {
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-
-	return cipher.NewCTR(block, iv)
-}