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- Given the following declarations, write an assembly program segment that prompts the user to enter a 6-character secret word and an encryption key (a digit from I to 9). Then encrypt the secret word entered by adding the encryption key value to each of the character in the secret word and show the result of the encryption.Instructions Your job is to write a program to encrypt outgoing messages and decrypt incoming messages using a Vigenere Cypher. In this assignment, you will parse a string of words from a file into tokens using the strtok_s command with pointers and then use the Vigenere Cypher algorithm to encrypt and decrypt the parsed words. Before you can perform any encryption/decryption activities, the first step is to read in messages from a file and parse the messages into individual words. The Program: Setting up classes and understanding tokenization The first step in encrypting/decrypting messages is to parse the messages into words before applying the encryption/decryption algorithms to them. This parsing process is called “tokenization.” Read the contents of a file into this array using the getline command. The objective of this assignment is to demonstrate the use of pointers in a program utilizing c-strings and tokenization. The use of pointers is foundational in C++. This…Operating system The free space bitmap looks like this:1010 0000 0000 0000:The system always searches for free blocks starting at the lowest numbered block. Block size is 4 KiB. (Blocks that belong to the same le do not need to be contiguous.) Write down the bitmap after each of the following actions:(a) File A of size 22 KiB is written.(b) File B of size 10 KiB is written.(c) File A is deleted.(d) File C of size 29 KiB is written.(e) File B is deleted.
- Write the system (debug) command :that Move a block of bytes starts at ES:300-320 to the locations ES:500- * 520UNIX ASSIGNMENT - IXQuestion 9 : In an organisation one wants to know how many programmers are there. The employee data is stored in a file called ‘personnel’ with one record per employee. Every record has field for designation. How can grep be used for this purpose?Asiacell O & O 12:50 PM zain 10 & is used to pass a parameter by value * is used as a reference operator * is called the dereference operator & in front of a variable identifier means memory address of this variable fstream.h must be included when reading and writing with files
- Part 2: Encryption Objective: Develop a program that encrypts a plaintext file by XORing 128-bit blocks of the file with a key repeatedly until the entire file is encrypted. Details: • The plaintext file will be a book from Project Gutenberg. • The encryption method should use the XOR operation on the file, 128 bits at a time, with the key. • Each 128-bit block is XORed with the same key. • The program should work from the command line and accept three parameters: o The name of the key file o The name of the plaintext file o The desired name of the resulting ciphertext file Note: This encryption method is not supposed to be secure. Usage: $ ./bad_streamcipher_enc kf pt ctGiven a binary file written using struct.pack() with the given format, return the number of bytes in the file and the number of bytes in each chunk.:param file_path::param format: a string with the format of the data in the struct:return: tuple with the number of bytes in file and the number of bytes written in each chunkUSE MODULE STRUCT AND OS IN PYTHONSAME PARAMETERS: In the RENTALS table shown in fig 2, 40 customers have created 50 rental contracts over time. A RENTALS record is 122 bytes and the block size for your OS is set to 1024 bytes with each block having a 1 byte pointer to the next written block as well as a 1 byte pointer to the next physically consecutive block. N (1, 1) StartDate Term NoOfDays ested ite) var(Requested EndDate) DReturnDate IfDailyTerm NoOWeeks NEW RESERVATION RENTALS rweeklyTerm (1, 1) WReturnDate (1, 1) AmountDue Contractt VID CID ActualReturn RID Date ВOOKED FOR Assuming spanned organization, how many blocks do you estimate the RENTALS file is using at its current size? 400 O 50 O 7
- in the FILE structure : What two fields we used to determine the size of the internal buffer allocated : Group of answer choices read_ptr and write_ptr base and end pointer flags and fileio all of the aboveWhat does the following Python code do? import serial #Import Serial Library arduinoSerialData = serial.Serial('com11,9600) #Create Serial port object called arduinoSerialData while (1==1): if (arduinoSerialData.inWaiting()>0): myData = arduinoSerialData.readline() print myData O Nothing O Read data from the serial port and plot it on an x-y graph. O Read data from the serial port and displays it on the screen. O Reads data once from the serial port and displays one piece of data on the screen.Need help to implement networking in python Server.py Load data from file This option will ask the user for a fully qualified path and will load a JSON file containing the information for users and pending messages. The format of the JSON file will be defined based on your implementation and it will the same used to save the data into file (menu option #4). Functionalities the server must provide: 1) User Sign Up: adds a user identified by a phone number to the system. a) Protocol: USR|username|password|display_name b) Response: 0|OK for success. 1| for an error. c) The server should validate that the username does not exist 2) User Sign In: verify user credentials a) Protocol: LOG|username|password b) Response: i) 0|OK → the credentials are correct. ii) 1|Invalid Credentials iii) 2|Already Logged In → in case that the user is logged in from another client. c) This will help the server knowing which user is connected. d) The server should keep a list of connected clients, which should…
