Title :
An Improved Certificateless Aggregate Signature
Author :
Jiang Deng ; Chunxiang Xu ; Huai Wu ; Guangyuan Yang
Author_Institution :
Sch. of Comput. Sci. & Eng., Univ. of Electron. & Technol. of China, Chengdu, China
Abstract :
Recently, Hou et al. Proposed an improved certificate less aggregate signature (CLASS) scheme based on Xiong et al´s scheme. They also demonstrated the scheme is provably secure in the random oracle model. Unfortunately, by giving concrete attacks, we point out that Hou et al.´s scheme is not secure in their security model. Then, we propose an improved certificate less signature (CLS) scheme and use it to construct an improved certificate less aggregate signature (CLAS) scheme.
Keywords :
digital signatures; CLASS scheme; certificateless aggregate signature; random oracle model; Aggregates; Educational institutions; Equations; Public key cryptography; aggregate signature; bilinear pairing; certificateless cryptography;
Conference_Titel :
Computer and Information Technology (CIT), 2014 IEEE International Conference on
Conference_Location :
Xi´an
DOI :
10.1109/CIT.2014.159
