CaSCaDE: (Time-Based) Cryptography from Space Communications DElay

ePrint Report: CaSCaDE: (Time-Based) Cryptography from Space Communications DElay

Carsten Baum, Bernardo David, Elena Pagnin, Akira Takahashi

Time-based cryptographic primitives such as Time-Lock Puzzles (TLPs) and Verifiable Delay Functions (VDFs) have recently found many applications to the efficient design of secure protocols such as randomness beacons or multiparty computation with partial fairness. However, current TLP and VDF candidate constructions rely on the average hardness of sequential computational problems. Unfortunately, obtaining concrete parameters for these is notoriously hard, as there cannot …

applications communications computation computational cryptography current design eprint report fairness functions lock partial problems protocols randomness report space tlp