2023
Enabling Efficient Threshold Signature Computation via Java Card API
DUFKA, Antonín a Petr ŠVENDAZákladní údaje
Originální název
Enabling Efficient Threshold Signature Computation via Java Card API
Autoři
DUFKA, Antonín (203 Česká republika, domácí) a Petr ŠVENDA (203 Česká republika, domácí)
Vydání
Benevento, Italy, Proceedings of the 18th International Conference on Availability, Reliability and Security, od s. 1-10, 10 s. 2023
Nakladatel
Association for Computing Machinery
Další údaje
Jazyk
angličtina
Typ výsledku
Stať ve sborníku
Obor
10200 1.2 Computer and information sciences
Stát vydavatele
Itálie
Utajení
není předmětem státního či obchodního tajemství
Forma vydání
elektronická verze "online"
Odkazy
Kód RIV
RIV/00216224:14330/23:00131568
Organizační jednotka
Fakulta informatiky
ISBN
979-8-4007-0772-8
UT WoS
001122662500002
Klíčová slova anglicky
threshold cryptography; Java Card; elliptic curves; Schnorr signatures; smartcards
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 7. 4. 2024 23:18, RNDr. Pavel Šmerk, Ph.D.
Anotace
V originále
Threshold signatures are becoming an increasingly popular method of signing key protection, primarily due to their ability to produce signatures that require the cooperation of multiple parties yet appear indistinguishable from a regular signature. This unique feature allows for their easy integration with existing systems, making them highly desirable in applications like national identity systems and transaction authorization, where they are being gradually deployed; their growing importance is further attested by NIST’s recently initiated efforts to standardize threshold schemes [19]. An issue often encountered in the deployment of threshold schemes is that their execution is not supported by current secure hardware, which is necessary for the secure handling of secrets, as storing the shares in regular memory puts them at an increased risk of compromise. This raises the question of whether it is possible to run state-of-the-art threshold protocols with current secure hardware that we attempt to answer for cryptographic smartcards. We analyzed algorithms available on smartcards with the Java Card platform and repurposed them to construct operations needed in threshold protocols. We use these derived operations to implement , a state-of-the-art threshold signature scheme currently in a standardization process, making it the first open smartcard implementation of a threshold protocol supporting an arbitrary threshold. We demonstrate the practicality of this approach on the latest smartcards with no requirement for proprietary libraries.
Návaznosti
MUNI/A/1389/2022, interní kód MU |
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VJ01010084, projekt VaV |
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