Cryptanalysis and Improvement of an Identity-Based Proxy Multi-signature Scheme
نویسنده
چکیده
Cao-Cao’s recently proposed an identity-based proxy signature scheme and claim that the scheme is provably secure in random oracle model. In this paper we have reviewed the scheme and proven that the scheme is vulnerable to chosen message attack under the defined security model. To prevent this attack, we propose an improved version of the scheme. A Proxy multi-signature scheme allows an authorized proxy signer to sign on a message on behalf of a group of original signers.
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عنوان ژورنال:
- Journal of Systems and Software
دوره 82 شماره
صفحات -
تاریخ انتشار 2009