manab-kb/hill-cipher

A project based on Cryptography involving Hill Cipher and Linear Transformations. LAA Project SEM - IV 2022.

Hi there 👋

I love coding in Python 🐍 and C++. I am a Microsoft Learn Student Ambassador. I regularly (try to) participate in hackathons, coding contests and practice problem solving on websites such as - Hackerrank, Leetcode, etc.

⚡ Fun fact:

• 🔭 I’m currently working on a Deep Learning model.
• 🌱 I’m currently building up my basics in Deep Learning.
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• Python (Intermediate)
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• C (Intermediate-Advanced)
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hill-cipher's Issues

Test Code for Errors

Run code and test for errors.

If you need help with instructions on how to run the code (Encryption):

• Open a terminal window.
• Copy and paste code from Input Preprocessing.sh into the terminal window (DO NOT PRESS THE ENTER KEY YET)
• Type > ./a.out > Output-File-Name.txt following the line above.

For Decryption, reverse the process.

Input Preprocessing

Input and Output need to be pre-processed as follows:

• Convert content within Input Text Files into Hexadecimal Format.
• Provide input in sets of 3 Characters Each to the program.
• Store Output in Text Files.

Decryption - Matrix Inversion

Decryption Code produces same output for multiple cases. Fix Matrix Inversion Function,

Input Formatting

Split input text into strings containing 3 letters each - Hill Cipher is most efficient for 3 letter words.

You can either:

• Modify the input file (Input Redirection Operators)
• Use File Descriptors and work with files in the code.