TY - GEN
T1 - Sanitizable Signatures with Different Admissibility Policies for Multiple Sanitizers
AU - Allabwani, Osama
AU - Blazy, Olivier
AU - Lafourcade, Pascal
AU - Olivier-Anclin, Charles
AU - Raynaud, Olivier
N1 - Publisher Copyright:
© 2026 Copyright held by the owner/author(s).
PY - 2026/6/4
Y1 - 2026/6/4
N2 - Sanitizable signatures authorize semi-trusted sanitizers to modify admissible blocks of a signed message. Most works consider only one sanitizer while those considering multiple sanitizers are limited by their capacity to manage admissible blocks which must be the same for all of them. We study the case where different sanitizers with different roles can be trusted to modify different blocks of the message. We define a model for multi-sanitizer sanitizable signatures which allow managing authorization for each sanitizer independently. We also provide formal definitions of its security properties. We propose two secure generic constructions FSV-k-SAN and IUT-k-SAN with different security properties. We implement both constructions and evaluate their performance on a server and a smartphone.
AB - Sanitizable signatures authorize semi-trusted sanitizers to modify admissible blocks of a signed message. Most works consider only one sanitizer while those considering multiple sanitizers are limited by their capacity to manage admissible blocks which must be the same for all of them. We study the case where different sanitizers with different roles can be trusted to modify different blocks of the message. We define a model for multi-sanitizer sanitizable signatures which allow managing authorization for each sanitizer independently. We also provide formal definitions of its security properties. We propose two secure generic constructions FSV-k-SAN and IUT-k-SAN with different security properties. We implement both constructions and evaluate their performance on a server and a smartphone.
KW - Generic Construction
KW - Multi Sanitizers
KW - Privacy
KW - Public Key
KW - Sanitizable Signatures
UR - https://www.scopus.com/pages/publications/105042423048
U2 - 10.1145/3779208.3785265
DO - 10.1145/3779208.3785265
M3 - Conference contribution
AN - SCOPUS:105042423048
T3 - ASIA CCS 2026 - Proceedings of the 21st ACM ASIA Conference on Computer and Communications Security
SP - 294
EP - 310
BT - ASIA CCS 2026 - Proceedings of the 21st ACM ASIA Conference on Computer and Communications Security
PB - Association for Computing Machinery, Inc
T2 - 21st ACM Asia Conference on Computer and Communications Security, AsiaCCS 2026
Y2 - 1 June 2026 through 5 June 2026
ER -