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» Extended visual cryptography schemes
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ACNS
2005
Springer
134views Cryptology» more  ACNS 2005»
15 years 3 months ago
Dynamic k-Times Anonymous Authentication
k-times anonymous authentication (k-TAA) schemes allow members of a group to be anonymously authenticated by application providers for a bounded number of times. k-TAA has applicat...
Lan Nguyen, Reihaneh Safavi-Naini
WCC
2005
Springer
140views Cryptology» more  WCC 2005»
15 years 3 months ago
Constructions of Complementary Sequences for Power-Controlled OFDM Transmission
We present constructions of polyphase sequences suitable for the use as codewords in orthogonal frequency-division multiplexing (OFDM) with strictly bounded peak-to-mean envelope p...
Kai-Uwe Schmidt, Adolf Finger
CTRSA
2004
Springer
120views Cryptology» more  CTRSA 2004»
15 years 3 months ago
Identity Based Undeniable Signatures
Abstract. In this paper, we give a first example of identity based undeniable signature using pairings over elliptic curves. We extend to the identity based setting the security m...
Benoît Libert, Jean-Jacques Quisquater
PKC
2004
Springer
95views Cryptology» more  PKC 2004»
15 years 3 months ago
A Nonuniform Algorithm for the Hidden Number Problem in Subgroups
Boneh and Venkatesan have proposed a polynomial time algorithm in a non-uniform model for recovering a ”hidden” element α ∈ IFp, where p is prime, from very short strings of...
Igor Shparlinski, Arne Winterhof
ESORICS
2003
Springer
15 years 2 months ago
Rapid Mixing and Security of Chaum's Visual Electronic Voting
Recently, David Chaum proposed an electronic voting scheme that combines visual cryptography and digital processing. It was designed to meet not only mathematical security standard...
Marcin Gomulkiewicz, Marek Klonowski, Miroslaw Kut...