How to Build Digital Signatures From Hash Functions

Explore the construction of digital signatures using hash functions in this ACCU 2021 conference talk. Delve into the essentials of existing digital signature systems and cryptographic hash functions, and learn how to build the former from the latter. Discover the historical significance of hash function-based digital signatures in asymmetric cryptography. Examine important historical systems and a newly developed one from recent years. Gain insights into the potential of hash functions as resilient building blocks for future cryptographic protocols in the face of quantum computing threats. Note that this session experienced audio issues, but the comprehensive content covers the transition from paper documents to electronic equivalents, the impact of quantum computing on current digital signature systems, and the promising role of hash functions in future security protocols.