Encryption is the process of converting information into a hash code or a cipher, to prevent unauthorized access by adversaries. The authorized user would access the content via secure keys and validation measures. As a beginner, you can start with a cyber security project on text encryption. This project would help you break down the structure of algorithms like Caesar Cipher, Vigenere Cipher, Railfence Cipher, Autokey Cipher, Playfair Cipher, Beaufort Cipher, etc.
You can build a simple web application to encrypt and decrypt textual information that the user keys in. Remember that strong encryption should produce different outputs even given the same input.
While writing historical ciphers (Caesar, Vigenere) is an excellent programming exercise, modern DevSecOps enforces a strict rule in production: Never Roll Your Own Crypto.
In a 2026 cybersecurity context, text encryption must utilize established, peer-reviewed libraries (like libsodium or the Node.js crypto module) implementing Authenticated Encryption with Associated Data (AEAD) algorithms, such as AES-256-GCM or ChaCha20-Poly1305, which guarantee both confidentiality and cryptographic integrity.
The technology used in the example: are Node.js and JavaScript.