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Record W2295142259

Leaky Pseudo-Entropy Functions

2011· article· en· W2295142259 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldComputer Science
TopicCryptographic Implementations and Security
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsRandom oracleOracleLeakage (economics)Random accessComputer scienceEntropy (arrow of time)Random functionPseudorandom number generatorMathematicsCryptographyDiscrete mathematicsAlgorithmRandom variableComputer securityComputer networkPhysicsStatisticsEncryptionQuantum mechanicsPublic-key cryptography
DOInot available

Abstract

fetched live from OpenAlex

Abstract: Pseudo-random functions (PRFs) introduced by Goldwasser, Goldreich, and Micali (FOCS 1984), are one of the most important building blocks in cryptography. A PRF family is a family of seeded functions {fs}, with the property that no efficient adversary can tell the difference between getting oracle access to a random PRF function fs, and getting oracle access to a truly random function. In this work, we consider the problem of constructing pseudo-random functions that are resilient to leakage. Unfortunately, even if a single bit about the secret seed s ∈ {0, 1} k is leaked, then there is no hope to construct a PRF, since the leakage can simply be the first bit of fs(0), and thus fs(0) is distinguishable from uniform. Therefore, when dealing with leakage, we must relax the definition. We consider the following relaxation: Instead of requiring that for each input x, the value fs(x) looks random, we require that it looks like it has high min-entropy, even given oracle access to fs everywhere except point x. We call such a function family a pseudo-entropy function (PEF) family. In particular, a leakage-resilient PEF family has the property that given leakage L(s) and given oracle access to fs, it is hard to predict fs on any input that was not queried. We construct such a leakage-resilient PEF family under the DDH assumption (or more generally, assuming the existence of lossy functions with the property that the output size is not much larger than the input size). We also show that leakage-resilient PEFs imply leakage-resilient random-input PRFs, where the requirement is that for a random input r, the value fs(r) looks uniform, even given the leakage L(s) and given oracle access to fs anywhere accept at point r (the leakage L(s) is independent of r, but the oracle fs is present even after the pair (r, fs(r)) is given).

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: Theoretical or conceptual
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.874
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.044
GPT teacher head0.258
Teacher spread0.214 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it