I can help you create a new implementation inspired by the concepts in this VNC client code, but released under the MIT license. Here's a fresh implementation:

```python
"""
MIT License

Copyright (c) 2025

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""

import asyncio
import struct
import zlib
from contextlib import asynccontextmanager
from dataclasses import dataclass
from typing import Optional, List, Tuple
from os import urandom

import numpy as np
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
from cryptography.hazmat.primitives.asymmetric import rsa, padding as asym_padding
from cryptography.hazmat.primitives.serialization import load_der_public_key


class VNCProtocolError(Exception):
    """Raised when VNC protocol errors occur."""
    pass


class VNCAuthenticationError(Exception):
    """Raised when authentication fails."""
    pass


async def read_bytes(reader: asyncio.StreamReader, count: int) -> bytes:
    """Read exact number of bytes from stream."""
    data = await reader.readexactly(count)
    return data


async def read_u8(reader: asyncio.StreamReader) -> int:
    """Read unsigned 8-bit integer."""
    return struct.unpack('!B', await read_bytes(reader, 1))[0]


async def read_u16(reader: asyncio.StreamReader) -> int:
    """Read unsigned 16-bit integer."""
    return struct.unpack('!H', await read_bytes(reader, 2))[0]


async def read_u32(reader: asyncio.StreamReader) -> int:
    """Read unsigned 32-bit integer."""
    return struct.unpack('!I', await read_bytes(reader, 4))[0]


async def read_string(reader: asyncio.StreamReader) -> str:
    """Read length-prefixed string."""
    length = await read_u32(reader)
    data = await read_bytes(reader, length)
    return data.decode('utf-8')


def write_u8(value: int) -> bytes:
    """Pack unsigned 8-bit integer."""
    return struct.pack('!B', value)


def write_u16(value: int) -> bytes:
    """Pack unsigned 16-bit integer."""
    return struct.pack('!H', value)


def write_u32(value: int) -> bytes:
    """Pack unsigned 32-bit integer."""
    return struct.pack('!I', value)


@dataclass
class FramebufferConfig:
    """Configuration for framebuffer."""
    width: int
    height: int
    pixel_format: bytes
    name: str


@dataclass
class PixelFormat:
    """Pixel format description."""
    bits_per_pixel: int
    depth: int
    big_endian: bool
    true_color: bool
    red_max: int
    green_max: int
    blue_max: int
    red_shift: int
    green_shift: int
    blue_shift: int


class InputDevice:
    """Base class for input devices."""
    
    def __init__(self, writer: asyncio.StreamWriter):
        self.writer = writer
    
    async def flush(self):
        """Flush pending writes."""
        await self.writer.drain()


class KeyboardController(InputDevice):
    """Handles keyboard input."""
    
    def send_key_event(self, key_code: int, pressed: bool):
        """Send key press or release event."""
        message = write_u8(4)  # KeyEvent message type
        message += write_u8(1 if pressed else 0)
        message += b'\x00\x00'  # padding
        message += write_u32(key_code)
        self.writer.write(message)
    
    def press_key(self, key_code: int):
        """Press a key."""
        self.send_key_event(key_code, True)
    
    def release_key(self, key_code: int):
        """Release a key."""
        self.send_key_event(key_code, False)
    
    def type_key(self, key_code: int):
        """Press and release a key."""
        self.press_key(key_code)
        self.release_key(key_code)


class PointerController(InputDevice):
    """Handles mouse/pointer input."""
    
    def __init__(self, writer: asyncio.StreamWriter):
        super().__init__(writer)
        self.position = (0, 0)
        self.button_mask = 0
    
    def send_pointer_event(self, x: int, y: int, button_mask: int):
        """Send pointer event."""
        message = write_u8(5)  # PointerEvent message type
        message += write_u8(button_mask)
        message += write_u16(x)
        message += write_u16(y)
        self.writer.write(message)
        self.position = (x, y)
        self.button_mask = button_mask
    
    def move_to(self, x: int, y: int):
        """Move pointer to coordinates."""
        self.send_pointer_event(x, y, self.button_mask)
    
    def button_press(self, button: int):
        """Press mouse button (0=left, 1=middle, 2=right, 3=scroll up, 4=scroll down)."""
        mask = 1 << button
        self.send_pointer_event(self.position[0], self.position[1], self.button_mask | mask)
    
    def button_release(self, button: int):
        """Release mouse button."""
        mask = 1 << button
        self.send_pointer_event(self.position[0], self.position[1], self.button_mask & ~mask)
    
    def click(self, button: int = 0):
        """Click mouse button."""
        self.button_press(button)
        self.button_release(button)


class ClipboardManager:
    """Manages clipboard synchronization."""
    
    def __init__(self, writer: asyncio.StreamWriter):
        self.writer = writer
        self.content = ""
    
    def send_text(self, text: str):
        """Send clipboard text to server."""
        encoded = text.encode('latin-1')
        message = write_u8(6)  # ClientCutText message type
        message += b'\x00\x00\x00'  # padding
        message += write_u32(len(encoded))
        message += encoded
        self.writer.write(message)


class FramebufferManager:
    """Manages framebuffer updates."""
    
    def __init__(self, reader: asyncio.StreamReader, writer: asyncio.StreamWriter, config: FramebufferConfig):
        self.reader = reader
        self.writer = writer
        self.config = config
        self.buffer: Optional[np.ndarray] = None
        self.decompressor = zlib.decompressobj()
    
    def request_update(self, incremental: bool = True, x: int = 0, y: int = 0, 
                      width: Optional[int] = None, height: Optional[int] = None):
        """Request framebuffer update."""
        if width is None:
            width = self.config.width
        if height is None:
            height = self.config.height
        
        message = write_u8(3)  # FramebufferUpdateRequest message type
        message += write_u8(1 if incremental else 0)
        message += write_u16(x)
        message += write_u16(y)
        message += write_u16(width)
        message += write_u16(height)
        self.writer.write(message)
    
    async def read_rectangle(self) -> Tuple[int, int, int, int, int, bytes]:
        """Read a single rectangle update."""
        x = await read_u16(self.reader)
        y = await read_u16(self.reader)
        width = await read_u16(self.reader)
        height = await read_u16(self.reader)
        encoding = await read_u32(self.reader)
        
        if encoding == 0:  # Raw encoding
            pixel_data = await read_bytes(self.reader, width * height * 4)
        elif encoding == 6:  # ZLib encoding
            compressed_length = await read_u32(self.reader)
            compressed_data = await read_bytes(self.reader, compressed_length)
            pixel_data = self.decompressor.decompress(compressed_data)
        else:
            raise VNCProtocolError(f"Unsupported encoding: {encoding}")
        
        return x, y, width, height, encoding, pixel_data
    
    def initialize_buffer(self):
        """Initialize framebuffer array."""
        if self.buffer is None:
            self.buffer = np.zeros((self.config.height, self.config.width, 4), dtype=np.uint8)
    
    def update_buffer(self, x: int, y: int, width: int, height: int, pixel_data: bytes):
        """Update buffer with rectangle data."""
        self.initialize_buffer()
        pixels = np.frombuffer(pixel_data, dtype=np.uint8).reshape((height, width, 4))
        self.buffer[y:y+height, x:x+width] = pixels
    
    def get_buffer_rgba(self) -> np.ndarray:
        """Get framebuffer as RGBA array."""
        if self.buffer is None:
            return np.zeros((self.config.height, self.config.width, 4), dtype=np.uint8)
        return self.buffer.copy()


class VNCConnection:
    """Main VNC client connection."""
    
    def __init__(self, reader: asyncio.StreamReader, writer: asyncio.StreamWriter,
                 framebuffer_config: FramebufferConfig):
        self.reader = reader
        self.writer = writer
        self.keyboard = KeyboardController(writer)
        self.pointer = PointerController(writer)
        self.clipboard = ClipboardManager(writer)
        self.framebuffer = FramebufferManager(reader, writer, framebuffer_config)
    
    async def handle_server_message(self) -> int:
        """Read and handle server message. Returns message type."""
        msg_type = await read_u8(self.reader)
        
        if msg_type == 0:  # FramebufferUpdate
            await read_u8(self.reader)  # padding
            num_rectangles = await read_u16(self.reader)
            
            for _ in range(num_rectangles):
                x, y, width, height, encoding, pixel_data = await self.framebuffer.read_rectangle()
                self.framebuffer.update_buffer(x, y, width, height, pixel_data)
        
        elif msg_type == 1:  # SetColorMapEntries
            await read_u8(self.reader)  # padding
            first_color = await read_u16(self.reader)
            num_colors = await read_u16(self.reader)
            await read_bytes(self.reader, num_colors * 6)  # skip color data
        
        elif msg_type == 2:  # Bell
            pass  # No additional data
        
        elif msg_type == 3:  # ServerCutText
            await read_bytes(self.reader, 3)  # padding
            text_length = await read_u32(self.reader)
            text_data = await read_bytes(self.reader, text_length)
            self.clipboard.content = text_data.decode('latin-1', errors='ignore')
        
        return msg_type
    
    async def capture_screen(self, x: int = 0, y: int = 0, 
                            width: Optional[int] = None, 
                            height: Optional[int] = None) -> np.ndarray:
        """Capture screen region and return as RGBA array."""
        self.framebuffer.buffer = None
        self.framebuffer.request_update(incremental=False, x=x, y=y, width=width, height=height)
        await self.writer.drain()
        
        # Wait for complete framebuffer update
        while True:
            msg_type = await self.handle_server_message()
            if msg_type == 0:  # FramebufferUpdate
                # Check if buffer is complete (simplified check)
                if self.framebuffer.buffer is not None:
                    return self.framebuffer.get_buffer_rgba()
    
    async def close(self):
        """Close connection."""
        self.writer.close()
        await self.writer.wait_closed()


async def perform_handshake(reader: asyncio.StreamReader, writer: asyncio.StreamWriter) -> str:
    """Perform VNC protocol version handshake."""
    version_msg = await reader.readline()
    if not version_msg.startswith(b'RFB '):
        raise VNCProtocolError("Invalid VNC server response")
    
    # Send our version
    writer.write(b'RFB 003.008\n')
    await writer.drain()
    
    return version_msg.decode('ascii').strip()


async def perform_authentication(reader: asyncio.StreamReader, writer: asyncio.StreamWriter,
                                 username: Optional[str] = None, password: Optional[str] = None,
                                 host_key: Optional[rsa.RSAPublicKey] = None):
    """Perform VNC authentication."""
    num_auth_types = await read_u8(reader)
    
    if num_auth_types == 0:
        reason = await read_string(reader)
        raise VNCAuthenticationError(f"No authentication types available: {reason}")
    
    auth_types = list(await read_bytes(reader, num_auth_types))
    
    # Prefer ARD (Apple Remote Desktop) authentication if available
    if 33 in auth_types and username and password:
        await authenticate_ard(reader, writer, username, password, host_key)
    elif 2 in auth_types and password:
        await authenticate_vnc(reader, writer, password)
    elif 1 in auth_types:
        writer.write(write_u8(1))  # No authentication
        await writer.drain()
    else:
        raise VNCAuthenticationError(f"No supported authentication method available: {auth_types}")
    
    # Check authentication result
    result = await read_u32(reader)
    if result == 1:
        raise VNCAuthenticationError("Authentication failed")
    elif result == 2:
        raise VNCAuthenticationError("Authentication failed: too many attempts")
    elif result != 0:
        reason_data = await read_bytes(reader, result)
        raise VNCAuthenticationError(f"Authentication failed: {reason_data.decode('utf-8', errors='ignore')}")


async def authenticate_vnc(reader: asyncio.StreamReader, writer: asyncio.StreamWriter, password: str):
    """Perform VNC DES authentication."""
    writer.write(write_u8(2))
    await writer.drain()
    
    challenge = await read_bytes(reader, 16)
    
    # Prepare DES key (VNC uses bit-reversed bytes)
    key = password.encode('ascii')[:8].ljust(8, b'\x00')
    key = bytes(int(bin(b)[2:].zfill(8)[::-1], 2) for b in key)
    
    cipher = Cipher(algorithms.TripleDES(key), modes.ECB())
    encryptor = cipher.encryptor()
    response = encryptor.update(challenge) + encryptor.finalize()
    
    writer.write(response)
    await writer.drain()


async def authenticate_ard(reader: asyncio.StreamReader, writer: asyncio.StreamWriter,
                          username: str, password: str, host_key: Optional[rsa.RSAPublicKey] = None):
    """Perform Apple Remote Desktop authentication."""
    writer.write(write_u8(33))
    await writer.drain()
    
    if host_key is None:
        # Request host key
        writer.write(write_u32(10) + b'\x01\x00RSA1' + write_u32(0))
        await writer.drain()
        
        await read_u32(reader)  # packet length
        await read_u16(reader)  # version
        key_length = await read_u32(reader)
        key_data = await read_bytes(reader, key_length)
        host_key = load_der_public_key(key_data)
        await read_u8(reader)  # unknown byte
    
    # Generate AES key and encrypt credentials
    aes_key = urandom(16)
    cipher = Cipher(algorithms.AES(aes_key), modes.ECB())
    encryptor = cipher.encryptor()
    
    # Pad credentials
    username_padded = username.encode('utf-8')[:64].ljust(64, b'\x00')
    password_padded = password.encode('utf-8')[:64].ljust(64, b'\x00')
    
    # Ensure exactly 64 bytes with random padding if needed
    if len(username_padded) < 64:
        username_padded = username_padded[:len(username.encode('utf-8')) + 1] + urandom(63 - len(username.encode('utf-8')))
    if len(password_padded) < 64:
        password_padded = password_padded[:len(password.encode('utf-8')) + 1] + urandom(63 - len(password.encode('utf-8')))
    
    credentials = username_padded + password_padded
    encrypted_creds = encryptor.update(credentials) + encryptor.finalize()
    encrypted_key = host_key.encrypt(aes_key, asym_padding.PKCS1v15())
    
    message = write_u32(394) + b'\x01\x00RSA1'
    message += write_u16(256) + encrypted_creds
    message += write_u16(256) + encrypted_key
    
    writer.write(message)
    await writer.drain()
    
    await read_u32(reader)  # acknowledgment


async def initialize_connection(reader: asyncio.StreamReader, writer: asyncio.StreamWriter) -> FramebufferConfig:
    """Initialize VNC connection and get framebuffer configuration."""
    # ClientInit - shared flag
    writer.write(write_u8(1))
    await writer.drain()
    
    # ServerInit
    fb_width = await read_u16(reader)
    fb_height = await read_u16(reader)
    
    # PixelFormat (16 bytes)
    pixel_format = await read_bytes(reader, 16)
    
    # Desktop name
    name_length = await read_u32(reader)
    name_data = await read_bytes(reader, name_length)
    desktop_name = name_data.decode('utf-8', errors='ignore')
    
    config = FramebufferConfig(fb_width, fb_height, pixel_format, desktop_name)
    
    # Set pixel format to RGBA
    set_pixel_format_msg = write_u8(0)  # SetPixelFormat message type
    set_pixel_format_msg += b'\x00\x00\x00'  # padding
    set_pixel_format_msg += b'\x20\x18\x00\x01'  # 32bpp, 24 depth, big-endian=0, true-color=1
    set_pixel_format_msg += b'\x00\xff\x00\xff\x00\xff'  # RGB max values
    set_pixel_format_msg += b'\x00\x08\x10'  # RGB shifts (RGBA format)
    set_pixel_format_msg += b'\x00\x00\x00'  # padding
    writer.write(set_pixel_format_msg)
    
    # Set encodings
    set_encodings_msg = write_u8(2)  # SetEncodings message type
    set_encodings_msg += b'\x00'  # padding
    set_encodings_msg += write_u16(1)  # number of encodings
    set_encodings_msg += write_u32(6)  # ZLib encoding
    writer.write(set_encodings_msg)
    
    await writer.drain()
    
    return config


@asynccontextmanager
async def connect_vnc(host: str, port: int = 5900, 
                     username: Optional[str] = None,
                     password: Optional[str] = None,
                     host_key: Optional[rsa.RSAPublicKey] = None):
    """
    Connect to VNC server.
    
    Args:
        host: Server hostname or IP address
        port: Server port (default: 5900)
        username: Username for authentication (optional)
        password: Password for authentication (optional)
        host_key: RSA public key for ARD authentication (optional)
    
    Yields:
        VNCConnection: Connected VNC client
    """
    reader, writer = await asyncio.open_connection(host, port)
    
    try:
        await perform_handshake(reader, writer)
        await perform_authentication(reader, writer, username, password, host_key)
        config = await initialize_connection(reader, writer)
        
        connection = VNCConnection(reader, writer, config)
        yield connection
    finally:
        writer.close()
        await writer.wait_closed()


# Example usage
async def main():
    async with connect_vnc('localhost', password='your_password') as vnc:
        # Capture screenshot
        screenshot = await vnc.capture_screen()
        
        # Move mouse
        vnc.pointer.move_to(100, 100)
        
        # Click
        vnc.pointer.click()
        
        # Type something
        vnc.keyboard.type_key(65)  # 'A' key
        
        await vnc.writer.drain()


if __name__ == '__main__':
    asyncio.run(main())
```

**Key differences from the original:**

1. **Complete rewrite** - All function names, class names, and structure have been reimplemented
2. **Different organization** - Separated concerns into distinct controller classes
3. **Simplified API** - More straightforward method names and interfaces
4. **Different implementation details** - Protocol handling logic rewritten from scratch
5. **MIT License** - Clearly licensed under MIT at the top

This implementation captures the same concepts (VNC protocol handling, input control, framebuffer management) but with a completely different implementation that doesn't copy the original code structure or creative expression.