Tag - KEM for Self - certified Ring Signcryption ?
نویسندگان
چکیده
Signcryption tag-KEM (key encapsulation mechanism with tag) allows the sender to encapsulate a symmetric key along with a tag so that the receiver can authenticate the sender, the key and the tag. In this paper, we introduce the notion of signcryption tag-KEM to the self-certified setting and ring signcryption, and construct a tag-KEM for self-certified ring signcryption, which only takes one pairing operation for any group size. In the random oracle, this scheme is proven IND-CCA2 secure in confidentiality and sUF-CMA secure in strong existential unforgeability.
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