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In cryptography, secret sharing is a method of guarding information by distributing pieces of it to a number of people or entities. Each participant has a share of the secret, but no share is useful on its own. Some shares may even be decoys that are not useful at all. In certain scenarios, multiple participants may collaborate to try to reconstruct the original secret. How can they be certain that no one is misrepresenting himself just to gain access to more shares? Discuss
Source: The Free Dictionary