In this lab, I explored basic cryptographic techniques and practiced using Linux command line tools to uncover and decrypt hidden messages. I was introduced to concepts like encryption, decryption, and the Caesar cipher—one of the oldest and simplest encryption techniques.
This exercise emphasized the importance of encryption in safeguarding data, especially in cybersecurity roles where understanding cryptographic controls is essential.
I encountered a simulated situation where several files in my Linux home directory had been encrypted. My goal was to decrypt them using command-line techniques.
First, I explored the contents of the directory to understand the file structure and content.
Next, I located a hidden file and applied Caesar cipher decryption to reveal the contents.
Finally, I decrypted the main encrypted data file to access the hidden message.
This lab helped reinforce essential Linux command line skills for working with encrypted files. I:
These are foundational skills for understanding and applying encryption techniques in cybersecurity.