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LWE

Learning With Errors

Recover or distinguish a noisy linear system.

BKW · Regev · polynomial samples

q ≍ n²; σ = q/(√(2πn) (log₂ n)²); polynomially many fresh samples

3 results · 2 papers
ClassicalHeuristic list modelLWE distribution2c n + o(n)
#PUBLICATION / AUTHORSDATETIME BOUNDSPACE BOUNDEVIDENCE
1The Asymptotic Complexity of Coded-BKW with Sieving Using Increasing Reduction FactorsErik MårtenssonISIT 2019SourceBibTeX / detailsclassical heuristic LWE BKW Regev regime polynomial samples19 Jan 201921.6399 n + o(n)—PublishedSource checked
2On the Asymptotics of Solving the LWE Problem Using Coded-BKW with SievingQian Guo · Thomas Johansson · Erik Mårtensson · Paul Stankovski WagnerIEEE Trans. Information Theory 2019SourceBibTeX / detailsclassical heuristic LWE BKW Regev regime polynomial samples9 Jan 201921.6417 n + o(n)—PublishedSource checked
3The Asymptotic Complexity of Coded-BKW with Sieving Using Increasing Reduction FactorsErik MårtenssonISIT 2019SourceBibTeX / detailsclassical heuristic LWE BKW Regev regime polynomial samples19 Jan 201921.6507 n+o(n)21.6507 n+o(n)PublishedSource checked
Comparison definition & assumptions
Regime
q ≍ n²; σ = q/(√(2πn) (log₂ n)²); polynomially many fresh samples
Computation
Classical
Rigor
Heuristic list model
Instances
LWE distribution
Cost scale
2^{c n + o(n)}
Parameter
n
Description
Coded-BKW exponents with a polynomial fresh-sample budget.
Comparison rules
Fix the Regev regime and restrict fresh input to poly(n) samples. Amplification creates additional equations at increased noise. Score total asymptotic time under the cited list model. Quantum rows retain the coherent table-access model. Objective: Decision-LWE with constant target distinguishing advantage. Search-LWE algorithms are admissible as decision upper bounds; a search-only theorem is not silently identified with the source's optimized decision corollary.
Tags
classical, heuristic, LWE, BKW, Regev regime, polynomial samples