A fundamental issue in blockchain systems is their scalability in terms of data storage,
computation, communication, and security. To resolve this issue, a promising research …

We present batching techniques for cryptographic accumulators and vector commitments in
groups of unknown order. Our techniques are tailored for distributed settings where no …

Since the inception of Bitcoin, a plethora of distributed ledgers differing in design and
purpose has been created. While by design, blockchains provide no means to securely …

A succinct non-interactive argument of knowledge (SNARK) allows a prover to produce a
short proof that certifies the veracity of a certain NP-statement. In the last decade, a large …

Multi-valued validated asynchronous Byzantine agreement (MVBA), proposed in the elegant
work of Cachin et al.(CRYPTO'01), is fundamental for critical fault-tolerant services such as …

As more and more mobile devices and IoT terminals are connected to the Internet, a huge
amount of spatio-temporal data is generated. In order to cope with the pressure of storing …

Asynchronous common subset (ACS) is a powerful paradigm enabling applications such as
Byzantine fault-tolerance (BFT) and multi-party computation (MPC). The most efficient ACS …

In the age of Industry 5.0, the industrial Internet of Things (IIoT) system has changed from the
original “cyber-physical” system to a complex “human-cyber-physical” system, data security …

Attribute-based encryption (ABE) generalizes public-key encryption and enables fine-
grained control to encrypted data. However, ABE upends the traditional trust model of public …

The notion of verifiable database (VDB) enables a resource-constrained client to securely
outsource a very large database to an untrusted server so that it could later retrieve a …