Linear Threshold Multisecret Sharing Schemes

Provided by: Universitat Rostock
Topic: Security
Format: PDF
In a multisecret sharing scheme, several secret values are distributed among a set of n users, and each secret may have a different associated access structure. The authors consider here information-theoretic secure schemes with multithreshold access structures. Namely, for every subset P of k users there is a secret key that can only be computed when at least t of them put together their secret information. Coalitions with at most w users with less than t of them in P cannot obtain any information about the secret associated to P.

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