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IACR
2011
207views more  IACR 2011»
14 years 4 months ago
Cryptanalysis and Security Enhancement of an Advanced Authentication Scheme using Smart Cards, and a Key Agreement Scheme for Tw
Abstract—In this work we consider two protocols for performing cryptanalysis and security enhancement. The first one by Song, is a password authentication scheme based on smart ...
Swapnoneel Roy, Amlan K. Das, Yu Li
CRYPTO
2005
Springer
171views Cryptology» more  CRYPTO 2005»
15 years 10 months ago
On Codes, Matroids and Secure Multi-party Computation from Linear Secret Sharing Schemes
Error correcting codes and matroids have been widely used in the study of ordinary secret sharing schemes. In this paper, we study the connections between codes, matroids, and a s...
Ronald Cramer, Vanesa Daza, Ignacio Gracia, Jorge ...
EUROCRYPT
2004
Springer
15 years 9 months ago
Construction of Secure Random Curves of Genus 2 over Prime Fields
For counting points of Jacobians of genus 2 curves defined over large prime fields, the best known method is a variant of Schoof’s algorithm. We present several improvements on...
Pierrick Gaudry, Éric Schost
ICC
2007
IEEE
15 years 8 months ago
A New Relaxation Labeling Architecture for Secure Localization in Sensor Networks
In this paper, a new strategy is proposed to defend against colluding malicious nodes in a sensor network. The new strategy is based on a new relaxation labeling algorithm to class...
Chih-Chieh Geoff Chang, Wesley E. Snyder, Cliff Wa...
CRYPTO
2011
Springer
237views Cryptology» more  CRYPTO 2011»
14 years 4 months ago
The Collision Security of Tandem-DM in the Ideal Cipher Model
We prove that Tandem-DM, one of the two “classical” schemes for turning a blockcipher of 2n-bit key into a double block length hash function, has birthday-type collision resist...
Jooyoung Lee, Martijn Stam, John P. Steinberger