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Cryptography, Volume 8, Issue 1
March 2024 - 11 articles
Cover Story: Continuous authentication enhances security by re-verifying a user’s validity during an active session. It utilizes data about users’ behavioral actions and contextual information to continuously authenticate them. Such data contain information about user-sensitive attributes, such as gender, age, and contextual information, and may also provide information about a user’s emotional states. In this paper, we propose two efficient protocols that enable privacy-preserving continuous authentication. This contribution aims to prevent the disclosure of user-sensitive attributes using partial homomorphic cryptographic primitives and to reveal an aggregated result without the explicit use of decryption. The protocols complete an authentication decision in a single, unidirectional transmission and have very low communication and computation costs with no degradation in biometric performance. View this paper
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Cryptography - ISSN 2410-387X