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A lock anyone can close.

How can anyone lock a message only you can open?

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The original inspiration

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Original demonstrations by The Bugged Dev. The teaching models and interactions here are new implementations.

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New teaching models inspired by public builds shared around Anatomy.

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Computers and networks

A lock anyone can close.

How can anyone lock a message only you can open?

Setting up the mechanism…

Message: Not sealed

More

Public lock: Not sent
Private key: Not selected

Next: public.

How can anyone lock a message only you can open?

Imagine giving everyone copies of your public padlock, while keeping its private key. Anyone can seal a box for you. Only your matching private key opens it. This physical analogy explains encryption roles; it does not perform real encryption.

Public lock seals · matching private key opens

What this model simplifies

Padlock analogy only. No actual cryptographic encryption and no security guarantee. Public encryption capability and private decryption capability are distinct; signing/authentication is outside this analogy.

Read the source · classic.csunplugged.org ↗

Put it to work.

Open a delivered locked message using the matching private key.

Make it work.

Open a delivered message using the matching private key.

Run