TY - JOUR
T1 - Cryptanalysis of a certificateless signcryption scheme in the standard model
AU - Weng, Jian
AU - Yao, Guoxiang
AU - Deng, Robert H.
AU - Chen, Min Rong
AU - Li, Xiangxue
PY - 2011/2/1
Y1 - 2011/2/1
N2 - Certificateless signcryption is a useful primitive which simultaneously provides the functionalities of certificateless encryption and certificateless signature. Recently, Liu et al. [15] proposed a new certificateless signcryption scheme, and claimed that their scheme is provably secure without random oracles in a strengthened security model, where the malicious-but-passive KGC attack is considered. Unfortunately, by giving concrete attacks, we indicate that Liu et al. certificateless signcryption scheme is not secure in this strengthened security model.
AB - Certificateless signcryption is a useful primitive which simultaneously provides the functionalities of certificateless encryption and certificateless signature. Recently, Liu et al. [15] proposed a new certificateless signcryption scheme, and claimed that their scheme is provably secure without random oracles in a strengthened security model, where the malicious-but-passive KGC attack is considered. Unfortunately, by giving concrete attacks, we indicate that Liu et al. certificateless signcryption scheme is not secure in this strengthened security model.
KW - Certificateless signcryption
KW - Existential unforgeability
KW - Malicious-but-passive KGC attack
KW - Semantic security
UR - https://www.scopus.com/pages/publications/78449308439
U2 - 10.1016/j.ins.2010.09.037
DO - 10.1016/j.ins.2010.09.037
M3 - 文章
AN - SCOPUS:78449308439
SN - 0020-0255
VL - 181
SP - 661
EP - 667
JO - Information Sciences
JF - Information Sciences
IS - 3
ER -