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SUMMARY:The Ring of Gyges: Using Smart Contracts for Crime
DTSTART:20150608T140000
DTEND:20150608T150000
DTSTAMP:20260928T232453Z
UID:380ceed9002bbca5422e1286e0da2c5ecc5223bf9bf8a1128d61b951
CATEGORIES:Conferences - Seminars
DESCRIPTION:Ari Juels\, Cornell Tech\, New York (USA)\nThanks to their ano
 nymity (pseudonymity) and lack of trusted intermediaries\, cryptocurrencie
 s such as Bitcoin have created or stimulated growth in many businesses and
  communities. A number of resulting activities\, however\, are harmful or 
 criminal\, including money laundering\, marketplaces for illicit goods\, a
 nd ransomware.\nEmerging next-generation cryptocurrencies such as Ethereum
  will include rich scripting languages in support of *smart contracts*\, p
 rograms that autonomously intermediate transactions and can consume authen
 ticated data feeds as inputs.  We show how these new cryptocurrency envir
 onments will enlarge the range of criminal activities that can be achieved
  with anonymity and minimal trust assumptions and may thus fuel new crimin
 al ecosystems. Specifically\, we show how cryptographically secure and inc
 entive-compatible criminal smart contracts can facilitate leakage of confi
 dential information\, theft of cryptographic keys\, and various real-world
  crimes (murder\, arson\, terrorism).\nWhile some contracts for some of th
 ese crimes are efficiently realizable in existing scripting languages\, ot
 hers require cryptographic primitives such as succinct non-interactive arg
 uments of knowledge (SNARKs). Today's cryptocurrencies such as Ethereum ca
 n in principle support these primitives\, but with minimal changes would e
 nable far more efficient implementation. These changes would also benefit 
 benign contracts\, and are thus already envisioned by the community.\nJoin
 t work with Ahmed Kosba (UMD) and Elaine Shi (Cornell Univ.)
LOCATION:BC 420 https://plan.epfl.ch/?room==BC%20420
STATUS:CONFIRMED
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