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Project-declaredLean 4.32.0

Ind cpa one time bias advantage compose with dem le

KEMScheme.ind_cpa_one_time_bias_advantage_compose_with_dem_le

Plain-language statement

Proof-ladders A1 reduction statement: the one-time IND-CPA advantage of textbook KEM+DEM is bounded by two KEM IND-CPA advantages plus one DEM IND-CPA advantage, using the canonical left/right and DEM reductions defined above. The runtime coherence hypotheses require runtime.evalDist to be a monad morphism (preserves pure and distributes >>=) and to...

program verificationseparation logiccryptography

Source project: VCVio

Person-level attribution pending.

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Project-declaredLean 4.32.0

Perfectly Correct compose With DEM

KEMScheme.perfectlyCorrect_composeWithDEM

Plain-language statement

If a KEM and externally keyed DEM are both perfectly correct in the concrete probabilistic semantics of m, then their composition is also perfectly correct.

program verificationseparation logiccryptography

Source project: VCVio

Person-level attribution pending.

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