摘要
2018年,王大星和滕济凯提出了一种适用于车载自组织网络的无证书聚合签名方案,并在随机模型下证明该方案是存在不可伪造的。针对该方案的安全性,给出了3类伪造攻击:"honest-but-curious"的KGC攻击、恶意的KGC与RSU的联合攻击、内部签名者的联合攻击。分析结果表明,王大星等人设计的无证书聚合签名方案在这3类攻击下均是不安全的。为了抵抗这些攻击,进一步提出了一个改进的无证书聚合签名方案。所提方案不仅在自适应性选择消息攻击下满足存在不可伪造性,还能有效抵抗联合攻击。
In 2018,Wang Daxing and Teng Jikai proposed a certificateless aggregate signature scheme for vehicular ad-hoc networks,and proved that their scheme was existentially unforgeable in the random oracle model.To analyze the security of this scheme,three types of forgery attacks are given:“honest-but-curious” KGC attacks,malicious KGC and RSU coalition attacks,and internal signers’ coalition attacks.The analysis results show that the certificateless aggregate signature scheme designed by Wang Daxing and Teng Jikai is insecure against these three types of attacks.To resist these attacks,an improved certificateless aggregate signature scheme is further proposed.The new scheme not only satisfies existential unforgeability under adaptive chosen-message attacks,but also resists effectively coalition attacks.
作者
杨小东
麻婷春
陈春霖
王晋利
王彩芬
YANG Xiaodong;MA Tingchun;CHEN Chunlin;WANG Jinli;WANG Caifen(College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070,China)
出处
《电子与信息学报》
EI
CSCD
北大核心
2019年第5期1265-1270,共6页
Journal of Electronics & Information Technology
基金
国家自然科学基金(61662069
61562077)
中国博士后科学基金(2017M610817)
兰州市科技计划项目(2013-4-22)
西北师范大学青年教师科研能力提升计划(NWNU-LKQN-14-7)~~
关键词
车载自组织网络
无证书聚合签名
联合攻击
不可伪造性
Vehicular ad-hoc networks
Certificateless aggregate signature
Coalition attack
Unforgeability
