Abstract
Signcryption is a cryptographic scheme that achieves the functionalities of both public-key encryption and digital signatures. It is an important scheme for realizing a mechanism of sending and/or receiving messages in a secure way, since it is understood that signcryption is a public-key based protocol to realize a secure channel from an insecure channel. On the other hand, various post-quantum cryptographic schemes have been proposed so far. Recently, several cryptographic schemes have been proposed in the quantum random oracle model where an adversary can submit quantum queries to a random oracle. In this paper, we propose a generic construction of signcryption in the quantum random oracle model for the first time. Our construction achieves both of the strongest confidentiality and strongest integrity in the multi-user setting tightly.
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Sato, S., Shikata, J. (2018). Signcryption with Quantum Random Oracles. In: Baek, J., Susilo, W., Kim, J. (eds) Provable Security. ProvSec 2018. Lecture Notes in Computer Science(), vol 11192. Springer, Cham. https://doi.org/10.1007/978-3-030-01446-9_24
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