Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
On-line/off-line digital signatures
CRYPTO '89 Proceedings on Advances in cryptology
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
Short Signatures from the Weil Pairing
ASIACRYPT '01 Proceedings of the 7th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Reducing Security Overhead for Mobile Networks
AINA '05 Proceedings of the 19th International Conference on Advanced Information Networking and Applications - Volume 1
An Efficient Online/Offline Signcryption Scheme for MANET
AINAW '07 Proceedings of the 21st International Conference on Advanced Information Networking and Applications Workshops - Volume 02
Short Signatures Without Random Oracles and the SDH Assumption in Bilinear Groups
Journal of Cryptology
Identity-Based Online/Offline Encryption
Financial Cryptography and Data Security
On the Security of Online/Offline Signatures and Multisignatures from ACISP'06
CANS '08 Proceedings of the 7th International Conference on Cryptology and Network Security
A Generic Construction of Identity-Based Online/Offline Signcryption
ISPA '08 Proceedings of the 2008 IEEE International Symposium on Parallel and Distributed Processing with Applications
An Efficient Identity-Based Online/Offline Encryption Scheme
ACNS '09 Proceedings of the 7th International Conference on Applied Cryptography and Network Security
On the generic construction of identity-based signatures with additional properties
ASIACRYPT'06 Proceedings of the 12th international conference on Theory and Application of Cryptology and Information Security
Efficient and provably-secure identity-based signatures and signcryption from bilinear maps
ASIACRYPT'05 Proceedings of the 11th international conference on Theory and Application of Cryptology and Information Security
Improved identity-based signcryption
PKC'05 Proceedings of the 8th international conference on Theory and Practice in Public Key Cryptography
Online/Offline signatures and multisignatures for AODV and DSR routing security
ACISP'06 Proceedings of the 11th Australasian conference on Information Security and Privacy
Identity based online/offline encryption and signcryption schemes revisited
InfoSecHiComNet'11 Proceedings of the First international conference on Security aspects in information technology
Identity-based online/offline signcryption for low power devices
Journal of Network and Computer Applications
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In this paper, we redefine a cryptographic notion called Online/Offline Identity-Based Signcryption. It is an "online/offline" version of identity-based signcryption, where most of the computations are carried out offline while the online part does not require any heavy computations such as pairings or multiplications on elliptic curve. It is particularly suitable for power-constrained devices such as smart cards. We give a concrete implementation of online/offline identity-based signcryption, which is very efficient and flexible. Unlike all the previous schemes in the literature, our scheme does not require the knowledge of receiver's information (either public key or identity) in the offline stage. The receiver's identity and the message to be signcrypted are only needed in the online stage. This feature provides a great flexibility to our scheme and makes it practical to use in real-world applications. To our knowledge, our scheme is the first one in the literature to provide this kind of feature. We prove that the proposed scheme meets strong security requirements in the random oracle model, assuming the Strong Diffie-Hellman (SDH) and Bilinear Diffie-Hellman Inversion (BDHI) are computationally hard.