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- Publisher Website: 10.1007/978-3-642-39059-3_13
- Scopus: eid_2-s2.0-84884497322
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Conference Paper: Relations among privacy notions for signcryption and key invisible "sign-then-encrypt"
Title | Relations among privacy notions for signcryption and key invisible "sign-then-encrypt" |
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Authors | |
Issue Date | 2013 |
Citation | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2013, v. 7959 LNCS, p. 187-202 How to Cite? |
Abstract | Signcryption simultaneously offers authentication through unforgeability and confidentiality through indistinguishability against chosen ciphertext attacks by combining the functionality of digital signatures and public-key encryption into a single operation. Libert and Quisquater (PKC 2004) extended this set of basic requirements with the notions of ciphertext anonymity (or key privacy) and key invisibility to protect the identities of signcryption users and were able to prove that key invisibility implies ciphertext anonymity by imposing certain conditions on the underlying signcryption scheme. This paper revisits the relationship amongst privacy notions for signcryption. We prove that key invisibility implies ciphertext anonymity without any additional restrictions. More surprisingly, we prove that key invisibility also implies indistinguishability against chosen ciphertext attacks. This places key invisibility on the top of privacy hierarchy for public-key signcryption schemes. On the constructive side, we show that general "sign-then- encrypt" approach offers key invisibility if the underlying encryption scheme satisfies two existing security notions, indistinguishable against adaptive chosen ciphertext attacks and indistinguishability of keys against adaptive chosen ciphertext attacks. By this method we obtain the first key invisible signcryption construction in the standard model. © 2013 Springer-Verlag. |
Persistent Identifier | http://hdl.handle.net/10722/280795 |
ISSN | 2023 SCImago Journal Rankings: 0.606 |
DC Field | Value | Language |
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dc.contributor.author | Wang, Yang | - |
dc.contributor.author | Manulis, Mark | - |
dc.contributor.author | Au, Man Ho | - |
dc.contributor.author | Susilo, Willy | - |
dc.date.accessioned | 2020-02-17T14:34:58Z | - |
dc.date.available | 2020-02-17T14:34:58Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2013, v. 7959 LNCS, p. 187-202 | - |
dc.identifier.issn | 0302-9743 | - |
dc.identifier.uri | http://hdl.handle.net/10722/280795 | - |
dc.description.abstract | Signcryption simultaneously offers authentication through unforgeability and confidentiality through indistinguishability against chosen ciphertext attacks by combining the functionality of digital signatures and public-key encryption into a single operation. Libert and Quisquater (PKC 2004) extended this set of basic requirements with the notions of ciphertext anonymity (or key privacy) and key invisibility to protect the identities of signcryption users and were able to prove that key invisibility implies ciphertext anonymity by imposing certain conditions on the underlying signcryption scheme. This paper revisits the relationship amongst privacy notions for signcryption. We prove that key invisibility implies ciphertext anonymity without any additional restrictions. More surprisingly, we prove that key invisibility also implies indistinguishability against chosen ciphertext attacks. This places key invisibility on the top of privacy hierarchy for public-key signcryption schemes. On the constructive side, we show that general "sign-then- encrypt" approach offers key invisibility if the underlying encryption scheme satisfies two existing security notions, indistinguishable against adaptive chosen ciphertext attacks and indistinguishability of keys against adaptive chosen ciphertext attacks. By this method we obtain the first key invisible signcryption construction in the standard model. © 2013 Springer-Verlag. | - |
dc.language | eng | - |
dc.relation.ispartof | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | - |
dc.title | Relations among privacy notions for signcryption and key invisible "sign-then-encrypt" | - |
dc.type | Conference_Paper | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1007/978-3-642-39059-3_13 | - |
dc.identifier.scopus | eid_2-s2.0-84884497322 | - |
dc.identifier.volume | 7959 LNCS | - |
dc.identifier.spage | 187 | - |
dc.identifier.epage | 202 | - |
dc.identifier.eissn | 1611-3349 | - |
dc.identifier.issnl | 0302-9743 | - |