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A modified strong proxy signature with proxy signer privacy protection

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2 Author(s)
Aimei Yang ; Sch. of Inf. Sci. & Eng., Henan Univ. of Technol., Zhengzhou ; Yuxun Liu

In 1996, Mambo et al. first introduced the concept of a proxy signature scheme. In 2001, Lee et al. constructed a strong non-designated proxy signature scheme. In 2002, Shum and Wei presented an enhancement to the Lee et al.psilas scheme to hide the identity of the proxy signer. No one can determine the identity of the proxy signer only from the proxy signature. Moreover, a trusted authority can reveal the proxy signerpsilas identity if needed. However, In 2005, Narn-Yih Lee *, Ming-Feng Lee showed that the Shum-Wei scheme cannot keep the property of the strong unforgeability. That is, not only the proxy signer but also the original signer can generate valid proxy signatures. On the base of it, So we present a modified strong proxy signature scheme with proxy signer privacy protection which is efficient and secure.

Published in:

IT in Medicine and Education, 2008. ITME 2008. IEEE International Symposium on

Date of Conference:

12-14 Dec. 2008

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