Privacy-preserving smart contracts
summary
Compares concrete primitives and their tradeoffs: homomorphic encryption lets chains compute on ciphertext but imposes large CPU and latency costs, zero-knowledge proofs move verification off-chain with small on-chain proofs but push heavy proving time and integration complexity to clients, and trusted execution environments deliver near-native performance at the expense of hardware trust and attestation challenges. Gives implementation-level concerns (gas overhead, prover time, trust anchors), argues hybrid designs are necessary and highlights which combinations work in prototypes versus which remain impractical.
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chapters (5)
- 0:00Introduction
- 7:36Privacy challenges in smart contracts
- 13:01Key issues with current systems
- 22:09Proposed privacy-preserving solutions
- 29:25Conclusion and next steps
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