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Towards a Uniform Description of Several Group Based Cryptographic Primitives
Uniform Description Several Group Cryptographic Primitives
2009/4/14
The public key cryptosystems MST1 and MST2 make use of certain
kinds of factorizations of finite groups. We show that generalizing such
factorizations to infinite groups allows a uniform description...
Security Flaws in Several Group Signatures Proposed by Popescu
group signature digital signature information security
2009/4/10
In resent years, Popescu proposed several group signature
schemes based on the Okamoto-Shiraishi assumption in [8{11], and claimed
his schemes are secure. However, this paper demonstrates that these...
Security Analysis of Several Group Signature Schemes
digital signature group signature forgery
2009/4/10
At Eurocrypt’91, Chaum and van Heyst introduced the concept of group
signature. In such a scheme, each group member is allowed to sign messages on behalf
of a group anonymously. However, in case of ...