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CSE-40567-60567_Spring-2025_HW2

This is code to help solve my Computer Security class Homework 2 assignment to decipher a DES-ECB ciphertext

References

  • Grabbe, J. O. (n.d.). The DES Algorithm Illustrated. Retrieved from TU Berlin

Problem 6 (40 pts).

The following message was enciphered using DES algorithm with the key of “LOVECSND” under electronic code book mode (ECB). Please Decipher it.

Ciphertext in binary format:

1100101011101101101000100110010101011111101101110011100001110011

Key: “LOVECSND” in binary format:

0100110001001111010101100100010101000011010100110100111001000100

📂 Project Structure

Directory/File Purpose
HW2.py Main file
tables.py DES look tables