Communications of the ACM
Digital Signcryption or How to Achieve Cost(Signature & Encryption)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Key-Privacy in Public-Key Encryption
ASIACRYPT '01 Proceedings of the 7th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Probabilistic encryption & how to play mental poker keeping secret all partial information
STOC '82 Proceedings of the fourteenth annual ACM symposium on Theory of computing
Analysis and improvement of an ID-based anonymous signcryption model
ICIC'09 Proceedings of the 5th international conference on Emerging intelligent computing technology and applications
On the Security of Identity Based Threshold Unsigncryption Schemes
NSS '10 Proceedings of the 2010 Fourth International Conference on Network and System Security
Breaking and building of threshold signcryption schemes
Inscrypt'09 Proceedings of the 5th international conference on Information security and cryptology
Anonymous encryption with partial-order subset delegation functionality
ProvSec'11 Proceedings of the 5th international conference on Provable 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
Efficient multi-receiver identity-based encryption and its application to broadcast encryption
PKC'05 Proceedings of the 8th international conference on Theory and Practice in Public Key Cryptography
Privacy in encrypted content distribution using private broadcast encryption
FC'06 Proceedings of the 10th international conference on Financial Cryptography and Data Security
Efficient and provably secure multi-receiver identity-based signcryption
ACISP'06 Proceedings of the 11th Australasian conference on Information Security and Privacy
A biometric identity-based signcryption scheme
Future Generation Computer Systems
Identity-based multi-receiver threshold signcryption scheme
Security and Communication Networks
Efficient identity-based signcryption scheme for multiple receivers
ATC'07 Proceedings of the 4th international conference on Autonomic and Trusted Computing
| Hi-index | 0.00 |
Signcryption is a cryptographic primitive that offers both confidentiality and authentication simultaneously, which combines the functionalities of signature and encryption in a provably secure manner. Indistinguishability against adaptive chosen-ciphertext attacks (ind-cca2) and unforgeability against adaptive chosen-message attacks (euf-cma2) are two important security requirements of a signcryption protocol. In a multi-receiver signcryption with a threshold decryption scheme, the ciphertext can be decrypted and verified when arbitrary t or more receivers among the n candidate decrypters work together. Recently, Qin et al. [Security and Communication Networks, 2011] proposed an identity-based multi-receiver signcryption scheme with threshold decryption, and they declared that the scheme achieves ind-cca2 and euf-cma2 security. In this paper, we first indicate that Qin et al.'s scheme is not secure, that is, Qin et al.'s scheme is neither semantically secure against ind-cca2 nor unforgeable against euf-cma2. After that, we present an improved scheme to capture the security requirements. Furthermore, we construct an anonymous version that can preserve the identity privacy of the sender and receiver, and we give the performance evaluation to indicate that our scheme has lower communication overhead although it provides the identity privacy preservation. Copyright © 2012 John Wiley & Sons, Ltd.