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A code-based hybrid signcryption scheme. (arXiv:2112.07130v2 [cs.CR] UPDATED)
cs.CR updates on arXiv.org arxiv.org
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 …
attack called ciphertext code encryption hybrid input key public signature tag version