Cyber-attacks are becoming more common against Internet users due to the increasing
dependency on online communication in their daily lives. X. 509 Public-Key Infrastructure …

We present SimplePIR, the fastest single-server private information retrieval scheme known
to date. SimplePIR's security holds under the learning-with-errors assumption. To answer a …

SBFT is a state of the art Byzantine fault tolerant state machine replication system that
addresses the challenges of scalability, decentralization and global geo-replication. SBFT is …

Decentralized systems are a subset of distributed systems where multiple authorities control
different components and no authority is fully trusted by all. This implies that any component …

Blockchains like Bitcoin and Namecoin and their respective P2P networks have seen
significant adoption in the past few years and show promise as naming systems with no …

Bitcoin's academic pedigree Page 1 36 COMMUNICATIONS OF THE ACM |
DECEMBER 2017 | VOL. 60 | NO. 12 practice IMA GE B Y INKED PIXEL S DOI:10.1145/3132259 …

Important decisions about people are increasingly made by algorithms: Votes are counted;
voter rolls are purged; financial aid decisions are made; taxpayers are chosen for audits; air …

This paper introduces federated Byzantine agreement (FBA), a new approach to consensus.
FBA's robustness stems from quorum slices, individual trust decisions made by each node …

Central banks around the world are exploring and in some cases even piloting Central Bank
Digital Currencies (CBDCs). CBDCs promise to realize a broad range of new capabilities …

This paper introduces Flamingo, a system for secure aggregation of data across a large set
of clients. In secure aggregation, a server sums up the private inputs of clients and obtains …