How to signcrypt a message to designated group
MA Chun-bo;AO Jun;LI Jian-hua
【期刊名称】《中国邮电高校学报（英文版）》 【年(卷),期】2007(014)004
【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. 【总页数】7页(57-63)
【关键词】broadcast;signcryption;designated group;chosen ciphertext attack;existential forgery;random oracle model 【作者】MA Chun-bo;AO Jun;LI Jian-hua
【作者单位】School of Information Security Engineering, Shanghai Jiao
How to signcrypt a message to designated group
