Blockchains have seen growing traction with cryptocurrencies reaching a market cap of over
1 trillion dollars, major institution investors taking interests, and global impacts on …

We study the problem of building a verifiable delay function (VDF). A VDF VDF requires a
specified number of sequential steps to evaluate, yet produces a unique output that can be …

The area of practical computational integrity proof systems, like SNARKs, STARKs,
Bulletproofs, is seeing a very dynamic development with several constructions having …

Zcash is an implementation of the Decentralized Anonymous Payment scheme Zerocash,
with security fixes and improvements to performance and functionality. It bridges the existing …

We propose a new class of post-quantum digital signature schemes that:(a) derive their
security entirely from the security of symmetric-key primitives, believed to be quantum …

We present CanDID, a platform for practical, user-friendly realization of decentralized
identity, the idea of empowering end users with management of their own credentials. While …

Designing an efficient cipher was always a delicate balance between linear and non-linear
operations. This goes back to the design of DES, and in fact all the way back to the seminal …

Zero-knowledge (ZK) applications form a large group of use cases in modern cryptography,
and recently gained in popularity due to novel proof systems. For many of these …

While traditional symmetric algorithms like AES and SHA-3 are optimized for efficient
hardware and software implementations, a range of emerging applications using advanced …

We discuss the widely increasing range of applications of a cryptographic technique called
multi-party computation. For many decades, this was perceived to be of purely theoretical …