TY - GEN
T1 - Hierarchical certificateless signatures
AU - Zhang, Lei
AU - Wu, Qianhong
AU - Domingo-Ferrer, Josep
AU - Qin, Bo
PY - 2010
Y1 - 2010
N2 - Certificateless cryptography eliminates the key escrow problem in identity-based cryptography. Hierarchical cryptography exploits a practical security model to mirror the organizational hierarchy in the real world. In this paper, to incorporate the advantages of both types of cryptosystems, we instantiate hierarchical certificateless cryptography by formalizing the notion of hierarchical certificateless signatures. Furthermore, we propose an HCLS scheme which, under the hardness of the computational Diffie-Hellman (CDH) problem, is proven to be existentially unforgeable against adaptive chosen-message attacks in the random oracle model. As to efficiency, our scheme has constant complexity, regardless of the depth of the hierarchy. Hence, the proposal is secure and scalable for practical applications.
AB - Certificateless cryptography eliminates the key escrow problem in identity-based cryptography. Hierarchical cryptography exploits a practical security model to mirror the organizational hierarchy in the real world. In this paper, to incorporate the advantages of both types of cryptosystems, we instantiate hierarchical certificateless cryptography by formalizing the notion of hierarchical certificateless signatures. Furthermore, we propose an HCLS scheme which, under the hardness of the computational Diffie-Hellman (CDH) problem, is proven to be existentially unforgeable against adaptive chosen-message attacks in the random oracle model. As to efficiency, our scheme has constant complexity, regardless of the depth of the hierarchy. Hence, the proposal is secure and scalable for practical applications.
KW - CDH assumption
KW - Hierarchical certificate-less signature
KW - Hierarchical cryptography
UR - https://www.scopus.com/pages/publications/79951803443
U2 - 10.1109/EUC.2010.92
DO - 10.1109/EUC.2010.92
M3 - 会议稿件
AN - SCOPUS:79951803443
SN - 9780769543222
T3 - Proceedings - IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, EUC 2010
SP - 572
EP - 577
BT - Proceedings - IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, EUC 2010
T2 - IEEE/IFIP 8th International Conference on Embedded and Ubiquitous Computing, EUC 2010
Y2 - 11 December 2010 through 13 December 2010
ER -