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» A Group Signature Scheme from Lattice Assumptions
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SCN
2010
Springer
147views Communications» more  SCN 2010»
15 years 4 months ago
Group Message Authentication
Group signatures is a powerful primitive with many practical applications, allowing a group of parties to share a signature functionality, while protecting the anonymity of the si...
Bartosz Przydatek, Douglas Wikström
CTRSA
2007
Springer
171views Cryptology» more  CTRSA 2007»
15 years 7 months ago
Compact E-Cash from Bounded Accumulator
Abstract. Known compact e-cash schemes are constructed from signature schemes with efficient protocols and verifiable random functions. In this paper, we introduce a different ap...
Man Ho Au, Qianhong Wu, Willy Susilo, Yi Mu
ICALP
2005
Springer
15 years 11 months ago
Hierarchical Group Signatures
We introduce the notion of hierarchical group signatures. This is a proper generalization of group signatures, which allows multiple group managers organized in a tree with the si...
Mårten Trolin, Douglas Wikström
ISW
2004
Springer
15 years 11 months ago
Chameleon Hashing Without Key Exposure
Abstract. Chameleon signatures are based on well established hashand-sign paradigm, where a chameleon hash function is used to compute the cryptographic message digest. Chameleon s...
Xiaofeng Chen, Fangguo Zhang, Kwangjo Kim
ISPEC
2005
Springer
15 years 11 months ago
On the Security of Some Nonrepudiable Threshold Proxy Signature Schemes
A (t, n) threshold proxy signature scheme enables an original signer to delegate the signature authority to a proxy group of n member such that t or more than t proxy signers can ...
Zuowen Tan, Zhuojun Liu, Wang Mingsheng