ZHANG Chuan-rong, XIAO Guo-zhen. Cryptanalysis and Improvement of a Signcryption Scheme with Public Verifiability[J]. Acta Electronica Sinica, 2006, 34(1): 177-179.
ZHANG Chuan-rong, XIAO Guo-zhen. Cryptanalysis and Improvement of a Signcryption Scheme with Public Verifiability[J]. Acta Electronica Sinica, 2006, 34(1): 177-179.DOI:
Lee's signcryption scheme with public verifiability is cryptoanalyzed and improved.By studying the confidentiality and non-repudiation of Lee's scheme
the fact that the confidentiality of Lee's scheme is lost during its public verification is found.Lee's scheme is modified
and the modification overcomes the security problem in Lee's scheme.So the modified scheme is a security signcryption scheme with public verifiability and it is of great benefit to solve the open problem "design signcryption schemes with public verifiability".