Sebastian Faust

Continuously Non-malleable Codes in the Split-State Model

2020 · Journal of Cryptology

Abstract Non-malleable codes (Dziembowski et al., ICS’10 and J. ACM’18) are a natural relaxation of error correcting/detecting codes with useful applications in cryptography. Informally, a code is non-malleable if an adversary trying to tamper with …

DeFi-ning DeFi: Challenges & Pathway

2021 · arXiv (Cornell University)

The decentralized and trustless nature of cryptocurrencies and blockchain technology leads to a shift in the digital world. The possibility to execute small programs, called smart contracts, on cryptocurrencies like Ethereum opened doors to countless …

Towards Sound Fresh Re-Keying with Hard (Physical) Learning Problems.

2016 · IACR Cryptology ePrint Archive

Most leakage-resilient cryptographic constructions aim at limiting the information adversaries can obtain about secret keys. In the case of asymmetric algorithms, this is usually obtained by secret sharing aka masking the key, which is made …