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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.
i want to record in database but how to delete only duplicate field not row in vb 6.0 or ms-access
Input to be in the form of a string of less than 256 characters. Assume that this character string (record) can only be of the form: Last Name, First Name, Box number, City, St
i doing a project about depth estimation, i have done some research, and i used the block matching algorithm to get the motion vectors from the image sequences, i now have the prob
question 1: In the opening lecture I spoke about general changes in business - flatter organizations, process orientation as opposed to functional silos, focus on supply chains, gr
Architecture and Components The .NET Framework 3.5 The .NET Structure (pronounced dot net) is an application framework that works generally on Enthusiasm Microsoft windows. It has
hello there, I making a program for the collage but I got stuck at one point, I have a timmer that moves object pnl with the pnl.left function, but I want it when it gets to end of
Write and test a simple perl program on the linux platform. You may use any linux system you wish, including the Suse linux installed in the lab. Activities. Note: to r
Lennie McPherson, proprietor of Lennie''s Bail Bonds, needs to calculate the amount due for setting the bail. Lennie requires something of value as collateral, and his fee is 10%
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You are required to develop a program that calculates the charges for DVD rentals, where current release cost RM3.50 and all others cost RM2.50. If a customer rents several DVDs, e
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