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Conference Paper
A Revised LKK Proxy Blind Signature Scheme
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- Authors
- Jong Ho Ryu, Kook Han Kim, Dong Il Seo
- Issue Date
- 2006-02
- Citation
- International Conference on Advanced Communication Technology (ICACT) 2005, pp.123-127
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In 1996, the concept of proxy signature was introduced by Mambo, Usuda and Okamoto in [1]. Strong proxy signature scheme has been introduced in [3], which we call LKK(B. Lee, H. Kim, K Kim) scheme. In [5], the authors showed that LKK scheme is vulnerable to their attack. In this paper, based on vulnerability of LKK scheme and blind Schnorr signature scheme, we propose a revised proxy signature and a proxy blind signature scheme. Basic idea to propose the revised scheme resisting their attack is to make difficult for the original signer to delete a delegation value.
- KSP Keywords
- Proxy blind signature, Signature scheme, proxy signature, schnorr signature