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Subject Code : OENG1206
Assignment Task:

Learning Outcomes 

Upon successful completion of this practical task you will be able to: 

• Explain how characters and other symbols are stored on computers using the ASCII system of encoding. 

• Demonstrate how to use casting functions in MATLAB to modify data-types. 

• Design and implement an algorithm utilising conditional/iterative programming structures and user- defined functions. 

Introduction to the practical 

‘Secret codes’ or ciphers have been around for hundreds if not thousands of years and have been used throughout history to secure communication between groups of people. 

Often ciphers have been used in times of war to ensure sensitive information is communicated only to certain people; even if the enemy intercepts the communication all they should be able to read is gibberish unless they know the appropriate key to use to decrypt the message. 

One well-known example of a cipher was the Enigma code used by the German military during World War II, since then ciphers have extended into the realms of computer science and computer network security with very complex algorithms now being used to encrypt communication between computers. Modern encryption schemes include algorithms such as the Advanced Encryption Standard (AES), the Rivest-Shamir- Adleman (RSA) system and the Transport Layer Security (TLS) system. 

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  • Uploaded By : Alex Cerry
  • Posted on : September 03rd, 2018

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