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ATHENE-Paper at Crypto 2025
ATHENE researchers will be presenting their papers at Crypto 2025, the 45th International Cryptology Conference. Established as the world's leading scientific event in the field of cryptography, Crypto 2025 is the most important annual forum for the exchange of the latest research results between researchers, practitioners and young scientists. As the flagship conference of the International Association for Cryptologic Research (IACR), Crypto 2025 showcases revolutionary theoretical advances and practical innovations that will profoundly impact the future of cybersecurity and digital trust infrastructures.
Accepted papers are:
Succinct PPRFs via Memory-Tight Reductions
Authors: Joël Alwen, Chris Brzuska, Jérôme Govinden, Patrick Harasser, Stefano Tessaro
The researchers have developed a new method to reduce the amount of data needed to set up secure communication between many people. Previously, group chats or other forms of secure communication required more data transmission as more people joined. The researchers have now created a mathematical procedure called "succinct multi-party non-interactive key exchange" (SMNIKE), where message size is independent of the number of people communicating - whether 10 or 1000 people are communicating with each other. To achieve this, they developed a special type of algorithm called "succinct puncturable pseudorandom functions" (succinct PPRFs) that have very compact cryptographic keys.
Strong Secret Sharing with Snitching
Authors: Jan Bormet, Stefan Dziembowski, Sebastian Faust, Tomasz Lizurej, Marcin Mielniczuk
In the paper, the researchrs tackle the challenge of keeping secrets safe in distributed systems, even when many participants secretly conspire to break the rules. Such collusion threatens the trust we place in technologies like secure voting, digital asset custody, and shared control of critical infrastructure. We show how to build systems that remain trustworthy even when conspirators use advanced tools like smart contracts to coordinate their attack.
The researchers will present their papers from August 17 to 21 at Crypto 2025 in Santa Barbara, USA.
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