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Project Krypton TechHack

It's a software implementation of 'Confederate Army Cipher Disk' programmed using 'C'. To know more about this cipher disk visit: https://www.youtube.com/watch?v=y94Mfvr2pKI

The inner ring of this disk implementation has alphabets in reverse order as in: https://www.britannica.com/topic/cipher-disk

To compile and execute it online, visit: http://www.tutorialspoint.com/compile_c_online.php

Goal

The goal of this project is to develop a simple encryption and decryption program using a custom substitution cipher. The program will take a 3-letter code and a message as input and output the encoded or decoded message.

Deliverables

  1. A C program that:
    • Prompts the user to enter a 3-letter code in uppercase.
    • Generates a substitution cipher based on the code.
    • Prompts the user to enter a message to encode or decode.
    • Outputs the encoded or decoded message.
  2. Documentation explaining the code and the process.

Process

  1. Input Handling:

    • Prompt the user to enter a 3-letter code in uppercase.
    • Calculate the starting index based on the first letter of the code.
    • Initialize an array with the third letter of the code.

  2. Cipher Generation:

    • Fill the array with decreasing values from the third letter of the code.
    • Handle different cases to ensure the array is filled correctly.
    • Print the generated substitution cipher.

  3. Message Encoding/Decoding:

    • Prompt the user to enter a message to encode or decode.
    • Use the generated substitution cipher to encode or decode the message.
    • Output the encoded or decoded message.

  4. Output:

    • Print the encoded or decoded message.
    • Print the author's name.

Author

MANOJ SAHUKAR