V. Narayanan

Publications
Influence

A Secure Sharding Protocol For Open Blockchains

Loi Luu, V. Narayanan, C. Zheng, Kunal Baweja, Seth Gilbert, P. Saxena
Computer Science
CCS
24 October 2016

We propose a new distributed agreement protocol for permission-less blockchains called ELASTICO, which scales almost linearly with available computation. Expand

Preventing Page Faults from Telling Your Secrets

Shweta Shinde, Zheng Leong Chua, V. Narayanan, P. Saxena
Computer Science
AsiaCCS
30 May 2016

We show that the page fault side-channel has sufficient channel capacity to extract bits of encryption keys from commodity implementations of cryptographic routines in OpenSSL and Libgcrypt -- leaking 27% on average and up to 100% of the secret bits in many cases. Expand

Preventing Your Faults From Telling Your Secrets: Defenses Against Pigeonhole Attacks

Shweta Shinde, Zheng Leong Chua, V. Narayanan, P. Saxena
Computer Science
ArXiv
16 June 2015

We show that the page fault side-channel has sufficient channel capacity to extract bits of encryption keys from commodity implementations of cryptographic routines in OpenSSL and Libgcrypt --- leaking 27% on average and up to 100% of the secret bits in many cases. Expand

SCP: A Computationally-Scalable Byzantine Consensus Protocol For Blockchains

Loi Luu, V. Narayanan, Kunal Baweja, C. Zheng, Seth Gilbert, P. Saxena
Computer Science
IACR Cryptol. ePrint Arch.
2015

In this paper, we design a new blockchain Byzantine consensus protocol SCP where the throughput scales linearly with the computation: the more computing power available, the more blocks selected per unit time. Expand

Algorithm-Architecture Codesign for Structured Matrix Operations on Reconfigurable Systems

J. Kim, P. Mangalagiri, +6 authors X. Sun

This article introduces the new ideas and techniques of algorithm-architecture codesign (AA codesign) for customized computation on reconfigurable systems. This approach, enabled by recent advances… Expand

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