Anzeige
Erschienen in:
2011 | OriginalPaper | Buchkapitel
Efficient Generic Constructions of Signcryption with Insider Security in the Multi-user Setting
verfasst von : Daiki Chiba, Takahiro Matsuda, Jacob C. N. Schuldt, Kanta Matsuura
Erschienen in: Applied Cryptography and Network Security
Verlag: Springer Berlin Heidelberg
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Signcryption is a primitive which provides the combined security properties of encryption and digital signatures i.e. confidentiality and unforgeability. A number of signcryption schemes have been presented in the literature, but up until now, no scheme which simultaneously achieves the currently strongest notions of insider confidentiality and strong insider unforgeability in the multi-user setting, has been proposed, without relying on random oracles or key registration. In this paper, we propose two new generic constructions of signcryption schemes from the combination of standard primitives and simple extensions of these. From our constructions, we instantiate a number of concrete and efficient signcryption schemes which satisfy the strongest notions of insider security in the multi-user setting while still being provably secure in the standard model.