Digital Signcryption or How to Achieve Cost(Signature & Encryption)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
On the Security of Joint Signature and Encryption
EUROCRYPT '02 Proceedings of the International Conference on the Theory and Applications of Cryptographic Techniques: Advances in Cryptology
Authenticated Encryption: Relations among Notions and Analysis of the Generic Composition Paradigm
ASIACRYPT '00 Proceedings of the 6th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Formal Proofs for the Security of Signcryption
PKC '02 Proceedings of the 5th International Workshop on Practice and Theory in Public Key Cryptosystems: Public Key Cryptography
Direct chosen ciphertext security from identity-based techniques
Proceedings of the 12th ACM conference on Computer and communications security
Formal Proofs for the Security of Signcryption
Journal of Cryptology
Chosen-Ciphertext Security from Identity-Based Encryption
SIAM Journal on Computing
Tag-KEM/DEM: A New Framework for Hybrid Encryption
Journal of Cryptology
Signcryption Scheme in Multi-user Setting without Random Oracles
IWSEC '08 Proceedings of the 3rd International Workshop on Security: Advances in Information and Computer Security
Practical Chosen Ciphertext Secure Encryption from Factoring
EUROCRYPT '09 Proceedings of the 28th Annual International Conference on Advances in Cryptology: the Theory and Applications of Cryptographic Techniques
Short and Stateless Signatures from the RSA Assumption
CRYPTO '09 Proceedings of the 29th Annual International Cryptology Conference on Advances in Cryptology
Efficient Constructions of Signcryption Schemes and Signcryption Composability
INDOCRYPT '09 Proceedings of the 10th International Conference on Cryptology in India: Progress in Cryptology
Efficient hybrid encryption from ID-based encryption
Designs, Codes and Cryptography
Lattice basis delegation in fixed dimension and shorter-ciphertext hierarchical IBE
CRYPTO'10 Proceedings of the 30th annual conference on Advances in cryptology
About the security of ciphers (semantic security and pseudo-random permutations)
SAC'04 Proceedings of the 11th international conference on Selected Areas in Cryptography
Efficient identity-based encryption without random oracles
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Hybrid signcryption schemes with outsider security
ISC'05 Proceedings of the 8th international conference on Information Security
Strongly unforgeable signatures based on computational diffie-hellman
PKC'06 Proceedings of the 9th international conference on Theory and Practice of Public-Key Cryptography
Chosen-Ciphertext security from tag-based encryption
TCC'06 Proceedings of the Third conference on Theory of Cryptography
An efficient signcryption scheme with key privacy
EuroPKI'07 Proceedings of the 4th European conference on Public Key Infrastructure: theory and practice
ACNS'12 Proceedings of the 10th international conference on Applied Cryptography and Network Security
Generic constructions for verifiable signcryption
ICISC'11 Proceedings of the 14th international conference on Information Security and Cryptology
Proceedings of the first ACM workshop on Asia public-key cryptography
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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.