Cryptanalysis and Improvement of a Certificateless Digital Signature Scheme
LU Shu-xi · Journal of Pingdingshan University · 2012
With the help of a certificateless security model,a certificateless digital signature was analyzed and the security flaws were found.The original scheme was improved for these security flaws.Its security is based on a classical difficult problem——computing Diffie-Hellman problem.The improved scheme is provably secure.