Cryptography and Information Security (CIS) Seminar

Rafael Pass: Rethinking Large-Scale Consensus through Blockchains
Friday, December 2, 2016 - 10:30am to 12:00pm

Abstract: 

Joseph Bonneau: Public Randomness, Blockchains and Proofs-of-delay
Friday, November 18, 2016 - 12:30pm to 2:00pm

A public, unpredictable source of randomness would enable many exciting applications, starting with verifiable public lotteries. It is an essential building block for many types of smart contract requiring random inputs, from online games to random audits.

Vassilis Zikas: Fair and Robust Multi-Party Computation using a Global Transaction Ledger
Friday, November 18, 2016 - 10:30am to 12:00pm
Abstract:
Tancrede Lepoint: Using the Rényi Divergence Rather than the Statistical Distance in Lattice Crypto
Friday, November 4, 2016 - 10:30am to 12:00pm

Abstract: 

Zahra Jafargholi: Adaptive Security of Yao's Garbled Circuits
Friday, August 5, 2016 - 10:30am to 12:00pm
Abstract: 
Renen Perlman: Lattice-Based Fully Dynamic Multi-Key FHE with Short Ciphertexts
Friday, August 26, 2016 - 10:30am to 12:00pm

Abstract: A fully homomorphic encryption scheme (FHE) allows one to convert an encryption of a message into an encryption of some arbitrary function of that message, without compromising the secrecy of the encrypted message.

Amit Sahai: State of the iO: where we stand in the quest for secure obfuscation
Friday, July 15, 2016 - 10:30am to 12:00pm
Abstract:
 
Ron Rivest: Symmetric Encryption via Keyrings and ECC
Friday, July 15, 2016 - 1:00pm to 2:30pm
Abstract:
 
We present a new scheme for implementing a "fuzzy vault", wherein
a message can be encrypted using a biometric (a set of features) or
a set of keywords (a keyring) as a symmetric encryption key.  The
Dakshita Khurana: Two-Message Non-Malleable Commitments
Friday, June 24, 2016 - 10:30am to 12:00pm

Abstract:  We construct two-message non-malleable commitments with respect to opening in the standard model, assuming only one-to-one one-way functions.

Kobbi Nissim: Accessing Data while Preserving Privacy
Friday, May 20, 2016 - 10:30am to 12:00pm

Abstract:  We initiate a formal study of the privacy-efficiency tradeoff of secure database systems. Such systems allow storing data on a remote server and accessing it efficiently while maintaining the privacy of the stored data.

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