TY - JOUR
T1 - Further improvement of an identity-based signcryption scheme in the standard model
AU - Li, Fagen
AU - Liao, Yongjian
AU - Qin, Zhiguang
AU - Takagi, Tsuyoshi
N1 - Funding Information:
We would like to thank the editor and anonymous reviewers for their valuable comments and suggestions. This work is supported by the National Natural Science Foundation of China (Grant Nos. 60803133 , 60873233 , 61073176 , 61003230 , 61003232 and 61103207 ), the State Key Laboratory of Information Security, and the Fundamental Research Funds for the Central Universities.
PY - 2012/3
Y1 - 2012/3
N2 - Signcryption is a cryptographic primitive that fulfills both the functions of digital signature and public key encryption simultaneously, at a cost significantly lower than that required by the traditional signature-then- encryption approach. In 2009, Yu et al. proposed an identity-based signcryption scheme in the standard model. In 2010, Jin et al. pointed out that Yu et al.'s scheme cannot achieve the semantic security and proposed an improved identity-based signcryption scheme. They proved that the improved scheme is semantically secure in the standard model. Recently, Li et al. showed that the Jin-et al.'s scheme cannot achieve the semantic security and existential unforgeability. To remedy the weaknesses of the Jin-et al.'s scheme, we give a further improvement in this paper. Our scheme satisfies semantic security and existential unforgeability.
AB - Signcryption is a cryptographic primitive that fulfills both the functions of digital signature and public key encryption simultaneously, at a cost significantly lower than that required by the traditional signature-then- encryption approach. In 2009, Yu et al. proposed an identity-based signcryption scheme in the standard model. In 2010, Jin et al. pointed out that Yu et al.'s scheme cannot achieve the semantic security and proposed an improved identity-based signcryption scheme. They proved that the improved scheme is semantically secure in the standard model. Recently, Li et al. showed that the Jin-et al.'s scheme cannot achieve the semantic security and existential unforgeability. To remedy the weaknesses of the Jin-et al.'s scheme, we give a further improvement in this paper. Our scheme satisfies semantic security and existential unforgeability.
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U2 - 10.1016/j.compeleceng.2011.11.001
DO - 10.1016/j.compeleceng.2011.11.001
M3 - Article
AN - SCOPUS:84858074696
SN - 0045-7906
VL - 38
SP - 413
EP - 421
JO - Computers and Electrical Engineering
JF - Computers and Electrical Engineering
IS - 2
ER -