| Full text | |
| Author(s): |
Barreto, Paulo S. L. M.
[1]
;
Simplicio, Jr., Marcos A.
[2]
;
Ricardini, Jefferson E.
[3]
;
Patil, Harsh Kupwade
[3]
Total Authors: 4
|
| Affiliation: | [1] Univ Washington Tacoma, Inst Technol, Tacoma, WA 98402 - USA
[2] Univ Sao Paulo, Dept Comp & Digital Syst Engn, Sao Paulo - Brazil
[3] LG Elect, Santa Clara, CA 95054 - USA
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | IEEE TRANSACTIONS ON COMPUTERS; v. 70, n. 3, p. 393-399, MAR 1 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
In the implicit certification model, the process of verifying the validity of the signer's public key is combined with the verification of the signature itself. When compared to traditional, explicit certificates, the main advantage of the implicit approach lies in the shorter public key validation data. This property is particularly important in resource-constrained scenarios where public key validation is performed very often, which is common in vehicular communications (V2X) that employ pseudonym certificates. In this article, we show an alternative Schnorr-based implicit certification procedure that can improve the efficiency of a popular V2X-oriented Vehicular Public Key Infrastructure (VPKI), the Security Credential Management System (SCMS). As an additional contribution, we show that SCMS's underlying certificate provisioning procedure, based on butterfly keys, is vulnerable to existential forgery attacks under certain conditions. We then discuss how this issue can be fixed in an effective and efficient manner. (AU) | |
| FAPESP's process: | 13/25977-7 - Security and reliability of Information: theory and practice |
| Grantee: | Marcelo Firer |
| Support Opportunities: | Research Projects - Thematic Grants |