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» On Anonymity of Group Signatures
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WISA
2005
Springer
15 years 3 months ago
Cryptanalysis of Some Group-Oriented Proxy Signature Schemes
Abstract. A proxy signature scheme allows an entity to delegate its signing power to another entity. Since the notion of proxy signatures was first introduced, many proxy signatur...
Je Hong Park, Bo Gyeong Kang, Sangwoo Park
FM
1999
Springer
93views Formal Methods» more  FM 1999»
15 years 1 months ago
Group Principals and the Formalization of Anonymity
We introduce the concept of a group principal and present a number of different classes of group principals, including threshold-group-principals. These appear to naturally usefu...
Paul F. Syverson, Stuart G. Stubblebine
IACR
2011
112views more  IACR 2011»
13 years 9 months ago
A Domain Transformation for Structure-Preserving Signatures on Group Elements
We present a generic transformation that allows us to use a large class of pairing-based signatures to construct schemes for signing group elements in a structure preserving way. A...
Melissa Chase, Markulf Kohlweiss
78
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INDOCRYPT
2004
Springer
15 years 2 months ago
Separable Linkable Threshold Ring Signatures
A ring signature scheme is a group signature scheme with no group manager to setup a group or revoke a signer. A linkable ring signature, introduced by Liu, et al. [20], additional...
Patrick P. Tsang, Victor K. Wei, Tony K. Chan, Man...
PKC
2012
Springer
219views Cryptology» more  PKC 2012»
12 years 12 months ago
On the Security of Dynamic Group Signatures: Preventing Signature Hijacking
We identify a potential weakness in the standard security model for dynamic group signatures which appears to have been overlooked previously. More specifically, we highlight tha...
Yusuke Sakai, Jacob C. N. Schuldt, Keita Emura, Go...