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[Task] Implement a "hardcoded" restriction over the threshold in the different schemes #18

@SimonRastikian

Description

@SimonRastikian

Background

The threshold may differ in some schemes whether DKG, robust ECDSA or OT based ECDSA. The threshold should not exceed in some cases the 1/3 of participants and in other cases can be almost every value less than N.
Solution Hardcode some restriction in this threshold signatures repo and potentially add those restrictions to the MPC repo (redundancy in this case does not hurt)

User Story

In case of misuse, the schemes are deemed broken.

Acceptance Criteria

Implementation of a clean solution with explicit (OBVIOUS) documentation.

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OKRObjective or goal issue typeSecurity improvementNo Panic! Deserves to be fixed soon to prevent future security problems on misuseenhancementNew feature or request

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