Improved Group-oriented Encryption for Group Communication
In open network environment, a group-oriented encryption scheme is vulnerable to collude attack since lots of members are involved in such a scheme. In order to improve the security of Ma et al. s encryption scheme and make it withstand collude attack, the identities of the users are used in designing the group-oriented encryption scheme in this paper. A sender in this scheme is allowed to encrypt a message using the group public key and send the ciphertext to the group. Any user in the group can independently decrypt the ciphertext via his private key. Finally, two theorems are given to show that the scheme also withstands adoptively chose ciphertext attack in random oracle model.
Chunbo Ma Jun Ao
School of Information and Communication, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, P.R.China
国际会议
三亚
英文
1717-1721
2009-04-24（万方平台首次上网日期，不代表论文的发表时间）