def METHOD_NAME(clientRandom: bytes, serverRandom: bytes, encryptionMethod: EncryptionMethod) -> 'RC4Crypter':
    """
    Generate an RC4Crypter instance for RDP clients.
    :param clientRandom: the client random data.
    :param serverRandom: the server random data.
    :param encryptionMethod: the encryption method.
    :return: RC4Crypter
    """
    macKey, decryptKey, encryptKey = generateKeys(clientRandom, serverRandom, encryptionMethod)
    return RC4Crypter(encryptionMethod, macKey, encryptKey, decryptKey)