Source-pinned research

Research proof index

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This index contains 423 research declarations. Search 10,000 more complete Mathlib declarations.

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Project-declaredLean 4.31.0

Query ne tau of find query with srs power none

KZG.CommitmentScheme.query_ne_tau_of_find_query_with_srs_power_none

Plain-language statement

If no query matches the second SRS power, then no query is equal to τ.

cryptographyproof systemscoding theory

Source project: ArkLib

Person-level attribution pending.

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Project-declaredLean 4.31.0

Query Reps exists

KZG.CommitmentScheme.queryReps_exists

Plain-language statement

Every query value is represented by some index in queryReps.

cryptographyproof systemscoding theory

Source project: ArkLib

Person-level attribution pending.

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Project-declaredLean 4.31.0

T sdh cond of two valid openings

KZG.CommitmentScheme.t_sdh_cond_of_two_valid_openings

Project documentation

The algebraic core of evaluation binding: two valid KZG openings of the same commitment at the same point, but to different values, yield a t-SDH solution with challenge c = -query. This lemma is intentionally isolated from the probabilistic (game-based) binding game. The proof of binding_cond_le_t_sdh_cond only needs to extract hsrs and the two `ve...

cryptographyproof systemscoding theory

Source project: ArkLib

Person-level attribution pending.

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Project-declaredLean 4.31.0

T sdh denominator ne zero of opening equations

KZG.CommitmentScheme.t_sdh_denominator_ne_zero_of_opening_equations

Plain-language statement

If two accepted openings at the same query give different responses, the t-SDH denominator τ + (-query) cannot vanish. This is the small algebraic contradiction used to avoid a separate query = τ branch in the binding reduction.

cryptographyproof systemscoding theory

Source project: ArkLib

Person-level attribution pending.

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Project-declaredLean 4.31.0

T sdh game eq

KZG.CommitmentScheme.t_sdh_game_eq

Plain-language statement

Transition 4: the mapped extended binding game is the t-SDH experiment.

cryptographyproof systemscoding theory

Source project: ArkLib

Person-level attribution pending.

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Project-declaredLean 4.31.0

Zmod eq of srs power eq

KZG.CommitmentScheme.zmod_eq_of_srs_power_eq

Plain-language statement

Equality with the second SRS power identifies a field element as the trapdoor.

cryptographyproof systemscoding theory

Source project: ArkLib

Person-level attribution pending.

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