Enabling Efficient Threshold Signature Computation via Java Card API

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F23%3A00131568" target="_blank" >RIV/00216224:14330/23:00131568 - isvavai.cz</a>

Result on the web

<a href="https://crocs.fi.muni.cz/_media/publications/pdf/2023-ares-dufka.pdf" target="_blank" >https://crocs.fi.muni.cz/_media/publications/pdf/2023-ares-dufka.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1145/3600160.3600180" target="_blank" >10.1145/3600160.3600180</a>

Result language

angličtina

Original language name

Enabling Efficient Threshold Signature Computation via Java Card API

Original language description

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.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10200 - Computer and information sciences

Project

<a href="/en/project/VJ01010084" target="_blank" >VJ01010084: Digital evidence in criminal proceedings</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 18th International Conference on Availability, Reliability and Security

ISBN

9798400707728

ISSN

—

e-ISSN

—

Number of pages

10

Pages from-to

1-10

Publisher name

Association for Computing Machinery

Place of publication

Benevento, Italy

Event location

Benevento, Italy

Event date

Jan 1, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

001122662500002