Abstract
One of the challenges within public-key based cryptosystems is providing the user with a convenient interface, while retaining security. In the universal composability framework, we propose an ideal functionality for secure messaging, with a user-friendly interface. We also propose an ideal functionality for signcryption, and we show that, given a public key infrastructure and a secure signcryption protocol, we can construct a protocol that securely realizes the secure messaging functionality. Moreover, we show that a signcryption protocol realizes the signcryption functionality if and only if the corresponding signcryption scheme is secure.
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Gjøsteen, K., Kråkmo, L. (2007). Universally Composable Signcryption. In: Lopez, J., Samarati, P., Ferrer, J.L. (eds) Public Key Infrastructure. EuroPKI 2007. Lecture Notes in Computer Science, vol 4582. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73408-6_26
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DOI: https://doi.org/10.1007/978-3-540-73408-6_26
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-73407-9
Online ISBN: 978-3-540-73408-6
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