Watch / Satoshi Has No Clothes, What About Szabo?: Smart Contracts, Privacy, and Practicality

Satoshi Has No Clothes, What About Szabo?: Smart Contracts, Privacy, and Practicality

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Satoshi Has No Clothes, What About Szabo?: Smart Contracts, Privacy, and Practicality

Duration: 00:18:53

Speaker: Ian Miers

Type: Talk

Expertise: Beginner

Event: Devcon 5

Date: Oct 2019

This talk will explore the possibilities for privacy preserving smart contracts in terms of both cryptography and functionality. It will give an overview of known approaches, including a detailed discussion of zk-proof based schemes such as Zexe (my work) and an overview of other approaches including refereed computation as seen in systems like Truebit and Arbitrum, multi-party computation, secret sharing, and fully homomorphic encryption. More fundamentally, it will explore what a private smart contract really is. Do we need to hide which contract is running? Do we really want privacy in most cases?

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Ian Miers

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Ian Miers is a postdoctoral researcher at Cornell Tech working on computer security and applied cryptography. His work focuses on improving the security and privacy of emerging technologies. This includes Zerocoin and Zerocash, the first systems to provide strongly private payments on top of public blockchains, and work improving mobile messaging including attacks on iMessage and new techniques for puncturable forward secure encryption. His work has been featured in The Washington Post, The New York Times, The Economist, and denounced in at least two op-eds. He is one of the co-founders of Zcash, a privacy preserving cryptocurrency based on his Ph.D. thesis.

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