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How to signcrypt a message to designated group 被引量：1

How to signcrypt a message to designated group
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摘要 In an open network environment, the protection of group communication is a crucial problem. In this article, a novel broadcast group-oriented signcryption scheme is presented for group communication scenarios in distributed networks, Anyone in this scheme can signcrypt a message and distribute it to a designated group, and any member in the receiving group can unsigncrypt the ciphertext. The ciphertext and public key in the scheme are of constant size. In addition, this new scheme offers public verification of the ciphertext. This property is very important to the large-scale group communication since the gateway can filter the incorrect ciphertext and alleviate the receiver＇s workload. Finally, a proof in the random oracle model is given to show that the scheme is secure against chosen ciphertext attack and existential forgery. In an open network environment, the protection of group communication is a crucial problem. In this article, a novel broadcast group-oriented signcryption scheme is presented for group communication scenarios in distributed networks, Anyone in this scheme can signcrypt a message and distribute it to a designated group, and any member in the receiving group can unsigncrypt the ciphertext. The ciphertext and public key in the scheme are of constant size. In addition, this new scheme offers public verification of the ciphertext. This property is very important to the large-scale group communication since the gateway can filter the incorrect ciphertext and alleviate the receiver＇s workload. Finally, a proof in the random oracle model is given to show that the scheme is secure against chosen ciphertext attack and existential forgery.
作者 MA Chun-bo LI Jian-hua AO Jun
机构地区 School of Information Security Engineering The State Key Laboralory of Information Security State Key Laboratory for Radar Signal Processing
出处 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2007年第4期57-63,共7页 中国邮电高校学报（英文版）
关键词 BROADCAST SIGNCRYPTION designated group chosen ciphertext attack existential forgery random oracle model broadcast, signcryption, designated group, chosen ciphertext attack, existential forgery, random oracle model
分类号 TP309.2 [自动化与计算机技术—计算机系统结构] TN919 [电子电信—通信与信息系统]
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参考文献19

  • 1Ma C, Mei Q, Li J. Broadcast group-oriented encryption for group communication. Journal of Computational Information Systems, 2007, 3(1): 63-71
  • 2An J H, Authenticated encryption in the public-key setting: security notions and analyses, http://eprint. iacr.org/2001/079, 2001
  • 3Jeong R, Jeong H Y, Rhee H S, et al. Provably secure encrypt-then-sign composition in hybrid signcryption. Proceedings of 5th International Conference on Information Security and Cryptology, Nov 28-29, 2002, Seoul, Korea. Berlin, Germany: Springer-Verlag, 2002:221-232
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  • 7An J H, Dodis Y, Rabin T. On the security of joint signature and encryption. Proceedings of International Conference on the Theory and Applications of Cryptographic Techniques, Apr 28-May 2, 2002, Amsterdam, The Netherlands. Berlin, Germany Springer-Verlag, 2002:83-107
  • 8Dodis Y, Freedman M J, Jarecki S, et al. Versatile padding schemes for joint signature and encryption. Proceedings of the 11th ACM Conference on Computer and Communications Secuirty, Oct 25-29, 2004, Washington, DC, USA. New York, NY, USA: ACM, 2004: 344-353.
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The Journal of China Universities of Posts and Telecommunications
2007年 第4期

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