The human internet of things (HIoT) is a promising trend that adopts a user-centered vision
to improve life quality by interacting with heterogeneous physical and virtual entities and the …

Car sharing offers a flexible peer-to-peer or station based car rental service to customers. On
one hand, it requires customers to expose identifications (eg, valid driving licenses) to car …

In this paper we propose a novel abstraction that we have named Range-Revocable
Pseudonyms (RRPs). RRPs are a new class of pseudonyms whose validity can be revoked …

Group signature supports users to generate signatures on behalf of the group. Verifier local
revocation (VLR) is an important method to revoke a misbehaving user in group signature …

Policy-compliant signatures (PCS) are a recently introduced primitive by Badertscher et
al.[TCC 2021] in which a central authority distributes secret and public keys associated with …

Despite of having many revocable group signatures schemes proposed in recent years,
backward security, which prevents a revoked signer from generating group signatures for …

Group signatures are active cryptographic topics where group members are granted right to
sign messages anonymously on behalf of their group. However, in practical applications …

Maintaining a balance between anonymity and traceability is a fundamental issue in privacy-
preserving systems. Isshiki et al. proposed an identity management system based on group …

For group signature (GS) supporting membership revocation, verifier-local revocation (VLR)
mechanism seems to be a more flexible choice, because it requires only that verifiers …

Public key encryption with equality test, proposed by Yang et al.(CT-RSA 2010), allows
anyone to check whether two ciphertexts of distinct public keys are encryptions of the same …