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- W4309071756 abstract "A key encapsulation mechanism (KEM) that takes as input an arbitrary string, i.e., a tag, is known as tag-KEM, while a scheme that combines signature and encryption is called signcryption. In this paper, we present a code-based signcryption tag-KEM scheme. We utilize a code-based signature and an IND-CCA2 (adaptive chosen ciphertext attack) secure version of McEliece's encryption scheme. The proposed scheme uses an equivalent subcode as a public code for the receiver, making the NPcompleteness of the subcode equivalence problem to be one of our main security assumptions. We then base the signcryption tag-KEM to design a code-based hybrid signcryption scheme. A hybrid scheme deploys asymmetric- as well as symmetric-key encryption. We give security analyses of both our schemes in the standard model and prove that they are secure against IND-CCA2 (indistinguishability under adaptive chosen ciphertext attack) and SUF-CMA (strong existential unforgeability under chosen message attack)." @default.
- W4309071756 created "2022-11-21" @default.
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- W4309071756 creator A5091713232 @default.
- W4309071756 date "2021-12-13" @default.
- W4309071756 modified "2023-09-27" @default.
- W4309071756 title "A code-based hybrid signcryption scheme" @default.
- W4309071756 doi "https://doi.org/10.48550/arxiv.2112.07130" @default.
- W4309071756 hasPublicationYear "2021" @default.
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