Cryptography and Secret Messages
This topic is about how messages can be hidden and revealed.
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Placeholder text: this section will explain how the main tool works, what the user can change, and what they should notice as the visual responds.
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About this topic
Cryptography is the mathematics of secret communication: hiding information, checking trust and using structure to make some tasks easy in one direction but hard to reverse.
This section should feel like mathematical detective work: test a cipher, look for structure, break a weak system, then build a stronger one.
Explore this through classical ciphers and frequency analysis, modular arithmetic, inverses and clock-like number systems, prime numbers, rsa and public-key cryptography.
Further exploration
Look up: frequency analysis in substitution ciphers
Explore next: RSA and modular arithmetic
Try searching for: public key cryptography explained visually