12 citations · 21 across the 14 of their papers we have counts for
4 papers · 1 filter
A Game-theoretic Approach for Provably-Uniform Random Number Generation in Decentralized Networks
Zhuo Cai
Many protocols in distributed computing rely on a source of randomness, usually called a random beacon, both for their applicability and security. This is especially true for proof…
Irrationality, Extortion, or Trusted Third-parties: Why it is Impossible to Buy and Sell Physical Goods Securely on the Blockchain
Amir Kafshdar Goharshady
Suppose that Alice plans to buy a physical good from Bob over a programmable Blockchain. Alice does not trust Bob, so she is not willing to pay before the good is delivered off-cha…
Ergodic Mean-Payoff Games for the Analysis of Attacks in Crypto-Currencies
Krishnendu Chatterjee, Amir Kafshdar Goharshady, Rasmus Ibsen-Jensen +1
Crypto-currencies are digital assets designed to work as a medium of exchange, e.g., Bitcoin, but they are susceptible to attacks (dishonest behavior of participants). A framework…
Secure Credit Reporting on the Blockchain
Amir Kafshdar Goharshady, Ali Behrouz, Krishnendu Chatterjee
We present a secure approach for maintaining and reporting credit history records on the Blockchain. Our approach removes third-parties such as credit reporting agencies from the l…