Need it urgent | Computer Science homework help

 

Before starting the assignment, it is important to read the background section on Cryptography to become familiar with the basics of encryption/decryption and ciphers.

The goal of this assignment is to implement three famous ciphers. You will be writing a separate function for each of them. The general format of these functions will be similar and has the following arguments:

  • ● An input message, basically a collection of symbols.
  • ● An output message, also a collection of symbols.
  • ● The key for the cipher. This will differ depending on the type of cipher.
  • ● A flag (i.e., an input that can only have two possible values) that specifies whether the relationship between the input and output message is an encryption or a decryption. So for a particular cipher, you will only be writing one function, which will do an encrypt or a decrypt, as specified by this flag. For this entire PA, you may assume we will only test valid inputs. This means you do not need to check this in your functions. The next section will talk more about the format of the input and output messages.
  • You are not allowed to use the <string.h> library (or any other string library). The goal of this PA is for you to learn how to work with strings directly.
Calculate your order
Pages (275 words)
Standard price: $0.00
Client Reviews
4.9
Sitejabber
4.6
Trustpilot
4.8
Our Guarantees
100% Confidentiality
Information about customers is confidential and never disclosed to third parties.
Original Writing
We complete all papers from scratch. You can get a plagiarism report.
Timely Delivery
No missed deadlines – 97% of assignments are completed in time.
Money Back
If you're confident that a writer didn't follow your order details, ask for a refund.

Calculate the price of your order

You will get a personal manager and a discount.
We'll send you the first draft for approval by at
Total price:
$0.00
Power up Your Academic Success with the
Team of Professionals. We’ve Got Your Back.
Power up Your Study Success with Experts We’ve Got Your Back.