When the bull meets Cryptography: 4 metaphorical illustrations of ZK, FHE, MPC, and TEE

Original Author: NEBRA in Proof Summer

Original Compilation: DeepTechFlow

1. ZK

You have some milk.

You can prove that this milk comes from 2 cows, but you don’t know which specific 2 cows, or how they produce milk.

2. FHE (Fully Homomorphic Encryption)

You have a milking machine.

You can produce milk without needing to know if there are 2 cows.

3. MPC (Multi-Party Computation)

You and your neighbor collectively own 2 cows.

Each of you can milk, but no one knows which part of the cow you are milking.

4. TEE (Trusted Execution Environment)

You have 2 cows.

You keep them in a secure cowshed where others cannot enter.

Bulls can only be milked in the bull pen.

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