Projektbeschreibung
Erforschung der Kryptografie mit zeitgesteuerter Freigabe
Kryptografische Algorithmen bilden die Grundlage von Sicherheitsprotokollen, doch für einige der sich rasant entwickelnden Anwendungen reichen sie nicht aus. Daher ist eine detaillierte Analyse der sequenziellen Zeitgarantien dringend notwendig. Die klassische Version der Kryptografie mit zeitgesteuerter Freigabe ermöglicht es kryptografischen Systemen, sich realistisch auf solche Garantien zu verlassen. Das EU-finanzierte Projekt FTRC wird solide Grundlagen für die Kryptografie mit zeitgesteuerter Freigabe aufstellen, indem ein umfassendes Verständnis der rechnergestützten Umgebung, der Bauteile und der Schemata zur Realisierung dieses Potenzials geschaffen wird. Es wird Quellen der Komplexitätstheorie erforschen, anhand derer die Zeitsteuerung in der Kryptografie sich an der Komplexität bekannter Probleme ausrichten kann. Letztendlich wird FTRC konkrete Schemata für Sicherheits- und Funktionalitätsgarantien konstruieren.
Ziel
"Cryptography has repeatedly revolutionized modern technology via its ""easy-or-infeasible"" design paradigm, classifying computations as either ""easy"" or ""infeasible"". Nowadays, however, this foundational paradigm is insufficient for a host of rapidly evolving applications, and a fine-grained accounting of sequential timing guarantees is urgently needed. This has recently led to substantial interest in the classic yet insufficiently-explored vision of timed-release cryptography, enabling cryptographic systems to rely on such guarantees realistically. Despite the significant attention, the vision of timed-release cryptography is still alarmingly far, and the landscape of our current knowledge must rapidly change to facilitate its deployment: Timed-release cryptography suffers from an extreme lack of candidate schemes, and the security of its main candidates is provided directly by assumption (with essentially no supporting evidence other than the lack of successful ""speed-up"" attacks).
This proposal aims to establish robust foundations for timed-release cryptography by obtaining an in-depth understanding of the computational landscape, building blocks, and schemes required for realizing its premise. Specifically, I plan to direct our effort towards addressing the following three fundamental objectives, which span a broad and interdisciplinary flavor of research directions: (1) Explore sources of computational hardness that enable to base timed-release cryptography on the hardness of well-studied problems, (2) identify the extents to which timed-release primitive building blocks require cryptographic structure and can be utilized in designing more complex schemes, and (3) construct concrete such schemes offering a wide range of security and functionality guarantees. I strongly believe that substantial progress towards our objectives will enable us to realize the premise of timed-release cryptography, and will have a long-lasting impact on cryptography."
Wissenschaftliches Gebiet
Programm/Programme
- HORIZON.1.1 - European Research Council (ERC) Main Programme
Thema/Themen
Finanzierungsplan
HORIZON-AG - HORIZON Action Grant Budget-BasedGastgebende Einrichtung
91904 Jerusalem
Israel