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Commit-Reveal

Definition

The commit-reveal scheme is a two-phase process used in cryptographic protocols to ensure fairness and prevent participants from altering their decisions after seeing others’ choices. In the first phase, a participant “commits” to a secret value by submitting a cryptographically secured hash of it. In the second phase, they “reveal” the actual secret value, allowing verification against the initial commitment. This method is vital for applications requiring verifiable randomness or secure multi-party computations.