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You are working for a cryptography department, where one of your jobs is to decipher intercepted messages that have been encrypted using a book cipher. The messages are sent by different people, each of whom writes their plaintext in a different language to confuse any attempt to decipher the messages. But this has made them a little too confident, and you have discovered a very useful secret: unaware that their messages can be cracked, each sender tends to use the same book passage over and over; all that changes is where in that passage they start the encryption. Being very lazy, they always start the encryption within 20 letters of the start of the passage. So for the purposes of this task, the 'key' is simply the starting position in the book text, and is a number from 0 to 20. Your job now is to write a computer program (a real executable program, not a spreadsheet) that can be used to decrypt these intercepted messages. The program will be required to read the ciphertext from a file and to display the plaintext on the screen, along with the key that was used to encrypt it. You will be asked to demonstrate your program to the tutor in the lab class on the due date. This is so that you will be there to run the program and make any decisions that need making. You will be given several ciphertexts to practice on, but in the demonstration you will be asked to demonstrate your program on files you have not seen. You may write your program in whatever programming language you wish.
Assume that you are a college professor needing to average grades for 10 students. Write a program that asks for each student's name and grade. Print the list on-screen with each s
Explain the Comma Operator- Computer Programming? The comma has two utilization and the most common use is as a parameter separator for data types and function parameter lists. H
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Consider a system that has the following UML models: Use Case for CalculateTotalProjectCost Trigger: End of each month Normal Flow of Events For each project in the pro
I need to finish my game project within two weeks using XNA. Would you guys can help me to finish it? Thank you
Difference between java and j2ee programming In the basic form, the phrase java is placed as a selection terminology. On the other hand, the phrase J2EE is placed as a renderin
For this programming assignment, you are to develop a Fortran 90/95/2003 program to automate a useful task. The aim of the assignment is for you to reveal your competence in the Fo
Define the Parameter Passing Mechanism - Computer Programming? The Parameters are syntactically identifiers and they are used within the body of the function and sometimes the
Class a Abstract Data Type: is a template for creating objects. A class describes a collection of related objects i.e. instances of the classes. Basically classes are user-defined
1. Use mathematical induction to prove Whenever n is a positive integer. 2. Use loop invariant to prove that the program for computing the sum of 1,...,n is correct.
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