ALLO>3. Extract a FieldYour program is receiving records from the network, formatted as described in the table below:Bytes0-34-78-1112-15***0Bits 7 6 5 4 3 2(record[2] & 0xF0) >> 4(record[6] | OXF) >> 4(record[2] >> 4) & 0x7(record[2] & 0x7) << 110 765destination-id(record[6] & 0x70) >> 4Clear Selectionsource-id1243210 7 6 5 4 3sizedataflag210 7 6 5message-typeThe records are provided as byte arrays (or lists) such that the 'destination-id' field, for example, is contained in record [4] and record [5]. How would you go about extracting out the 'flag' field and returning its value?Pick ONE optionpri4332 1 0data-routing(Alt + A)

Bitwise operations involve manipulating individual bits in a binary representation of data.…

Answered: 3. Extract a Field Your program is…

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter8: Advanced Method Concepts

Section: Chapter Questions

Problem 7RQ

See similar textbooks

Similar questions

Goal:Experimenting with AES-128 symmetric key cipher. Note:Using Python programming language that provided libraries for AES. Description:PART 1: write a program that uses AES-128 to decrypt a message. The program should be named "decrypt", and should deal with three files that contain the encrypted text as a stream of bytes, the 128-bit key for decryption stored as a stream of bytes, and the outcome of the decryption, respectively.- To test this program, here's an example of an encrypted message (ciphertext.dat) and its 128-bit secret key (key.dat). PART 2: you will try to use "brute force" to decrypt an encrypted message, where you only have the first 96-bits of the 128-bit secret key (last 4 bytes of the secret key are missing!) The program should be called "findk", and should deal with two files that contain the encrypted text as a stream of bytes and the first 96-bits of the key, respectively. The program should print out on standard output the missing 4 bytes of the key in…
program in java: topic: selection port The Input must be:["apple", "avocado", "orange", "banana", "strawberry", "pineapple", "plum", "mango"] The assumptions and conditionsSorted partition is on the right side.The order is decreasing based on the number of letters which is found after letter "j" inclusive.The result or output must be:['strawberry', 'pineapple', 'plum', 'mango', 'orange', 'avocado', 'apple', 'banana']
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…
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 ct
implementation of Caesar Cipher Using Python Write Code: You are required to implement the Caesar Cipher encryption/decryption algorithm in Python. Remember to implement the algorithm in such a way that it takes a file as input, encrypts it and store in the current directory. This encrypted file must checkable. The implementation must have a decryption procedure which takes the encrypted file from the current directory, decrypts it and store it with some specific name in the current directory. The name should be different from the original file so that it can be verified.
*Student information is being held in a data area, where each student record has the following format: The first nine bytes are the student number, held in ASCII The next byte is the course mark The next word is the section identifier 10009. There are well over three hundred such student records that have been loaded sequentially into memory starting at address $10000. The last record loaded is a dummy record with a section identifier of $FFFF, to show the end of the rècords. If a2 has the address of a student record, what is the location of the next record in the array / data area. Explain your answer.
Student information is being held in a data area, where each student record has the following format: The first nine bytes are the student number, held in ASCII The next byte is the course mark The next word is the section identifierThere are well over three hundred such student records that have been loaded sequentially into memory starting at address $10000. The last record loaded is a dummy record with a section identifier of $FFFF, to show the end of the records.Write an assembler subroutine GetMax that will scan the entire list and find the highest mark. If there is a tie, the first student in the list with the highest mark should be found. The subroutine should return the starting address of this record in address register a3.
Part Two: Implementing a rainbow table You are to write a program, in C/C++, Java or Python, that should run using the following instruction: $ ./Rainbow Passwords.txt where the file Passwords.txt contains a list of possible passwords. The password file contains a password per line, as in the provided words file and consists of strings of printable characters. Any password used must be taken from this file, so the only stored hash information needs to relate to those entries in the file. The program is used to find pre-images for given hash values. Rainbow tables can be used to solve pre-image problems for hash functions. At the simplest level they can simply be a list of hash values and the corresponding pre-images, often from some dictionary. This can be expensive in terms of storage space however, and a more efficient way of identifying pre-images involves the use of the hash function and reduction functions. First step The process is as follows: 1. Read in the list of possible…
Computer Science Write a C/C++ program, call it findExt, to find all files in a directory hierarchy, whose extensions are in the extension list provided as arguments to the program. Your program should print the whole pathnames of the found files. Synopsis: findExt <extension-list> [-t target-directory] When target-directory is missing, the working directory (./) will be the target directory Some sample runs: $ findExt txt pdf That is, find all files whose extensions are either txt or pdf in the directory hierarchy ./ $ findExt jpg -t $HOME //target directory is home directory That is, find all files whose extensions is jpg in the directory hierarchy $HOME Requirement: - You must use the system call nftw() that allows you to walk across a file tree. This system call will do all the recursive walk and each time it visits a file or a directory, it will call your own function (a function that you pass as a parameter).
Student information is being held in a data area, where each student record has the following format: The first nine bytes are the student number, held in ASCII The next byte is the course mark The next word is the section identifier There are well over three hundred such student records that have been loaded sequentially into memory starting at address $10000. The last record loaded is a dummy record with a section identifier of $FFFF, to show the end of the records. If a2 has the address of a student record, what is the location of the next record in the array / data area:
Student information is being held in a data area, where each student record has the following format: The first nine bytes are the student number, held in ASCII The next byte is the course mark The next word is the section identifier There are well over three hundred such student records that have been loaded sequentially into memory starting at address $10000. The last record loaded is a dummy record with a section identifier of $FFFF, to show the end of the records. If a2 has the address of a student record, if using indexed addressing mode, what is the index value X such that X(a2) addresses the course mark?
Question 2 Write a C program which creates two child alternatively and print it on screen. processes. One of the child processes must open data1.txt and fill it with 10 random Sample Run data files and read one data from each file integers (0-9). The other child process must $/question2 open data2.txt and fill it with 10 random PARENT) Child process ID: 5379 letters (a-z). In the meanwhile, parent must CHILD1] wrote: 6 2 8 6 7 3 3 1 8 4 to print both child processes' id's and wait for CHILD2] Wrote: f y nhjw xkpm to them to finish. Then, it must open both file. [PARENT] Child process ID: 5378 file. [PARENT] 6 f 2 y 8 n 6 h 7 j 3 w 3 x 1 k 8 p 4 m

SEE MORE QUESTIONS

Recommended textbooks for you

Microsoft Visual C#

Computer Science

ISBN:

9781337102100

Author:

Joyce, Farrell.

Publisher:

Cengage Learning,

Microsoft Visual C#

Computer Science

ISBN:

9781337102100

Author:

Joyce, Farrell.

Publisher:

Cengage Learning,

SEE MORE TEXTBOOKS