Title: Improvement of Threshold Group Signature Scheme
Abstract: A (t,n) threshold group signature scheme allows a singer to determine a (t,n) threshold strategy and only t or more signers of the group can sign messages on behalf of the group. Recently, Li et al. proposed a new threshold group signature scheme based on discrete logarithm problem, which is not only threshold-signing but also threshold-verifying. Unfortunately, their scheme are not secure, in their scheme the appointed group signer himself can generate a valid signature, which voilates unforgeability and threshold characteristics. Then we propose an improvement to overcome this security flaw.
Publication Year: 2011
Publication Date: 2011-07-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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