juniorCryptography
What is the Caesar Cipher?
Updated Apr 28, 2026
Short answer
A simple substitution cipher that replaces a letter with another letter some fixed number of positions down the alphabet.
Deep explanation
At a junior level, understanding the CIA triad (Confidentiality, Integrity, Availability) is crucial. Cryptography primarily addresses Confidentiality through encryption and Integrity through hashing and digital signatures.
Real-world example
Using HTTPS while browsing the web utilizes TLS to encrypt traffic between your browser and the server.
Common mistakes
- Confusing Base64 encoding with encryption.
Follow-up questions
- Can you reverse a hash?
- What makes a password 'strong'?