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ICALP
2005
Springer
15 years 5 months ago
Improved Lower Bounds for Locally Decodable Codes and Private Information Retrieval
We prove new lower bounds for locally decodable codes and private information retrieval. We show that a 2-query LDC encoding nbit strings over an ℓ-bit alphabet, where the decode...
Stephanie Wehner, Ronald de Wolf
ENTCS
2008
102views more  ENTCS 2008»
14 years 12 months ago
A Monotonicity Principle for Information Theory
We establish a monotonicity principle for convex functions that enables high-level reasoning about capacity in information theory. Despite its simplicity, this single idea is rema...
Konstantinos Chatzikokolakis, Keye Martin
TIT
2008
105views more  TIT 2008»
14 years 10 months ago
State Discrimination With Post-Measurement Information
We introduce a new state discrimination problem in which we are given additional information about the state after the measurement, or more generally, after a quantum memory bound ...
Manuel A. Ballester, Stephanie Wehner, Andreas Win...
IACR
2011
73views more  IACR 2011»
13 years 11 months ago
Secure Authentication from a Weak Key, Without Leaking Information
We study the problem of authentication based on a weak key in the information-theoretic setting. A key is weak if its min-entropy is an arbitrary small fraction of its bit length. ...
Niek J. Bouman, Serge Fehr
ITNG
2007
IEEE
15 years 6 months ago
Dependabilities in a High-performance Quantum Real-time Distributed System
Yao-Hsin Chou, I-Ming Tsai, Chin-Shyurng Fahn, Shi...