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Novel Efficient Certificateless Blind Signature Schemes

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2 Author(s)
Shifeng Sun ; State Key Lab. of Networking & Switching Technol., Beijing Univ. of Posts & Telecommun., Beijing, China ; Qiaoyan Wen

Recently, Al-Riyami and Paterson introduced a new and attractive paradigm named certiflcateless public key cryptography (CL-PKC), which avoids the key-escrow problem in identity-based cryptography (ID-PKC) and eliminates the expensive certificates used in the public key infrastructure (PKI). In this paper, based on Choi et al.'s efficient provably-secure certificateless signature (CLS) schemes, two new efficient certificateless blind signature schemes are proposed in this new setting. Compared with the existed constructions, the proposed schemes require less computational cost and satisfy all the requirements of blind signatures, especially the properties of strong unforgeability and unlinkability (blindness).

Published in:

Computer Network and Multimedia Technology, 2009. CNMT 2009. International Symposium on

Date of Conference:

18-20 Jan. 2009