As a promising solution to blockchain scalability, sharding divides blockchain nodes into
small groups called shards, splitting the workload. Existing works for sharding, however, are …

Tiptoe is a private web search engine that allows clients to search over hundreds of millions
of documents, while revealing no information about their search query to the search engine's …

Trusted Execution Environments (TEEs) are a feature of modern central processing units
(CPUs) that aim to provide a high assurance, isolated environment in which to run …

Digital data has enabled organizations to anticipate future threats, opportunities, and trends.
However, digital data owners do not know how their data is accessed, shared, and …

The control, governance, and management of the web have become increasingly
centralised, resulting in security, privacy, and censorship concerns. Decentralised initiatives …

Leader-based Byzantine fault-tolerant (BFT) consensus protocols used by permissioned
blockchains have limited scalability and robustness. To alleviate the leader bottleneck in …

Confidentiality, integrity protection, and high availability, abbreviated to CIA, are essential
properties for trustworthy data systems. The rise of cloud computing and the growing …

This paper proposes Addax, a fast, verifiable, and private online ad exchange. When a user
visits an ad-supported site, Addax runs an auction similar to those of leading exchanges; …

Payment channel networks (PCNs) have been designed and utilized to address the
scalability challenge and throughput limitation of blockchains. It provides a high-throughput …

Forking attacks against TEEs like Intel SGX can be carried out either by rolling back the
application to a previous state, or by cloning the application and by partitioning its inputs …