| Title |
Secure Multi-Party Computation-Based Privacy-Preserving Authentication for Smart Cities |
| ID_Doc |
43466 |
| Authors |
Sucasas, V; Aly, A; Mantas, G; Rodriguez, J; Aaraj, N |
| Title |
Secure Multi-Party Computation-Based Privacy-Preserving Authentication for Smart Cities |
| Year |
2023 |
| Published |
Ieee Transactions On Cloud Computing, 11, 4 |
| Abstract |
The increasing concern for identity confidentiality in the Smart City scenario has fostered research on privacy-preserving authentication based on pseudonymization. Pseudonym systems enable citizens to generate pseudo-identities and establish unlinkable anonymous accounts in cloud service providers. The citizen's identity is concealed, and his/her different anonymous accounts cannot be linked to each other. Unfortunately, current pseudonym systems require a trusted certification authority (CA) to issue the cryptographic components (e.g., credentials, secret keys, or pseudonyms) to citizens. This CA, generally a Smart City governmental entity, has the capability to grant or revoke privacy rights at will, hence posing a serious threat in case of corruption. Additionally, if the pseudonym system enables de-anonymization of misusers, a corrupted CA can jeopardize the citizens' privacy. This paper presents a novel approach to construct a pseudonym system without a trusted issuer. The CA is emulated by a set of Smart City service providers by means of secure multi-party computation (MPC), which circumvents the requirement of assuming an honest CA. The paper provides a full description of the system, which integrates an MPC protocol and a pseudonym-based signature scheme. The system has been implemented and tested. |
| PDF |
http://gala.gre.ac.uk/id/eprint/43177/7/43177_MANTAS_Secure_multi_party_computation_based_privacy_preserving_asuthentication_for_Smart_Cities.pdf
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