A NEW GROUP-ORIENTED PUBLICLY VERIABLETHRESHOLD SIGNCRYPTION SCHEME

• 作 者: Chen Shangdi Bian Guangxu
• 机 构: CollegeofScience,InformationEngineeringSchool
• 出 处: 电子科学学刊：英文版
• 发表日期: 2013年6期
• 关键词: 通信保密 理论 密码 密码机 Group-oriented Threshold signcryption Public verifiable Semantic
• 基金项目: Supported by the National Natural Science Foundation of China （No. 61179026） and the Fundamental Research funds for the Centeral Universities （No. 3122013K001）.

Through cryptanalysis of the improved scheme of a generalized group-oriented threshold signcryption schemes,it is found that the improved scheme can effectively resist conspiracy attack and forgery attack,but does not have semantic security and public ver