Abstract
In multi-user scenarios where requirements of privacy are high, we propose a modular, anonymous and source hiding protocol for sending signed messages (\(\textsf{SHP}\)). By combining existing cryptographic building blocks, encryption and ring signature schemes, we are able to mitigate traceability and routing attacks on otherwise anonymous participants. Moreover, our protocol is secure without any trusted third party. Our construction is provably secure in our security model, where the adversary controls the communication channels. We illustrate our construction via a Vehicle Ad-Hoc Network (VANET) use-case, where the \(\textsf{SHP}\) provide source anonymity to cluster of vehicles exchanging signed safety and security messages to road-side units within Cooperative Intelligent Transportation Systems (C-ITS).
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This work was supported by the internal funds of the Department of Fundamentals of Computer Science of the Wrocław University of Science and Technology for the conducted research.
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Salin, H., Krzywiecki, Ł. (2023). A Source Hiding Protocol for Cooperative Intelligent Transportation Systems (C-ITS). In: Meng, W., Yan, Z., Piuri, V. (eds) Information Security Practice and Experience. ISPEC 2023. Lecture Notes in Computer Science, vol 14341. Springer, Singapore. https://doi.org/10.1007/978-981-99-7032-2_22
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DOI: https://doi.org/10.1007/978-981-99-7032-2_22
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