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Concurrent Security of Anonymous Credentials Light, Revisited
May 22, 2023, 6:54 a.m. |
IACR News www.iacr.org
ePrint Report: Concurrent Security of Anonymous Credentials Light, Revisited
Julia Kastner, Julian Loss, Omar Renawi
We revisit the concurrent security guarantees of the well-known Anonymous Credentials Light (ACL) scheme (Baldimtsi and Lysyanskaya, CCS'13). This scheme was originally proven secure when executed sequentially, and its concurrent security was left as an open problem.
A later work of Benhamouda et al. (EUROCRYPT'21) gave an efficient attack on ACL when executed concurrently, seemingly resolving this question once and for all.
In this work, …
acl anonymous credentials eprint report loss problem report security well-known
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