TY - GEN
T1 - SPOT+
T2 - 19th International Conference on Smart Business Technologies, ICSBT 2022 and International Conference on Security and Cryptography, SECRYPT 2022
AU - Masmoudi, Souha
AU - Laurent, Maryline
AU - Kaaniche, Nesrine
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2023/1/1
Y1 - 2023/1/1
N2 - At SECRYPT 2022, Masmoudi et al. introduced a group signature scheme that offers an aggregated and batch verification over massive proofs of knowledge, named Sevil. The performance analysis of the proposed scheme demonstrates its efficiency and its applicability to real world applications. In this paper, we introduce Spot+, an extension of Sevil to a concrete use-case referred to as a proximity-tracing protocol. Spot+ is a secure and privacy-preserving proximity-tracing protocol that ensures data consistency and integrity and preserves the privacy of users who share their contact information with people in proximity. Spot+ relies on Sevil to significantly improve the performances of the Spot framework [IEEE Access Journal, 10, 3208697, (2022)] while supporting aggregated and batch verifications over contact information belonging to multiple users. In comparison with Spot, Spot+ construction allows to reduce computation complexity by 50% and 99% for verifying data integrity and consistency, respectively, when considering an asymmetric pairing type and a 128-bit security level.
AB - At SECRYPT 2022, Masmoudi et al. introduced a group signature scheme that offers an aggregated and batch verification over massive proofs of knowledge, named Sevil. The performance analysis of the proposed scheme demonstrates its efficiency and its applicability to real world applications. In this paper, we introduce Spot+, an extension of Sevil to a concrete use-case referred to as a proximity-tracing protocol. Spot+ is a secure and privacy-preserving proximity-tracing protocol that ensures data consistency and integrity and preserves the privacy of users who share their contact information with people in proximity. Spot+ relies on Sevil to significantly improve the performances of the Spot framework [IEEE Access Journal, 10, 3208697, (2022)] while supporting aggregated and batch verifications over contact information belonging to multiple users. In comparison with Spot, Spot+ construction allows to reduce computation complexity by 50% and 99% for verifying data integrity and consistency, respectively, when considering an asymmetric pairing type and a 128-bit security level.
KW - Batch verification
KW - Group signatures
KW - Privacy
KW - Proof of knowledge
KW - Proximity-tracing
UR - https://www.scopus.com/pages/publications/85174536564
U2 - 10.1007/978-3-031-45137-9_1
DO - 10.1007/978-3-031-45137-9_1
M3 - Conference contribution
AN - SCOPUS:85174536564
SN - 9783031451362
T3 - Communications in Computer and Information Science
SP - 1
EP - 19
BT - E-Business and Telecommunications - 19th International Conference, ICSBT 2022, and 19th International Conference, SECRYPT 2022, Revised Selected Papers
A2 - Van Sinderen, Marten
A2 - Wijnhoven, Fons
A2 - Hammoudi, Slimane
A2 - Samarati, Pierangela
A2 - Vimercati, Sabrina De Capitani di
PB - Springer Science and Business Media Deutschland GmbH
Y2 - 14 July 2022 through 16 July 2022
ER -