Steganography vs Cryptography: Understand the Key Differences with Live Demo 🔐

As children, most of us have used lemon juice as invisible ink to write messages to our friends. There was an indescribable thrill in watching words appear — almost magically — when we held a white sheet of paper up in front of a candle flame. What you might not have known back then is how this experiment demonstrates not only oxidation but also steganography!

Steganography is an age-old practice of hiding data (in any form — text, image, etc.) in plain sight within another object. This process allows you to transmit information undetected, without arousing any suspicion.

Cryptography is the method of protecting information by transforming it using mathematical concepts and algorithms into an unreadable form. The data is encrypted using public or private key cryptography. In public key (or symmetric key) cryptography, the same key is used to encrypt and decrypt a message. In private key (or asymmetric key) cryptography, different keys — a public and a secret key that are mathematically related to each other — are used.

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