## Cryptology ePrint Archive: Report 2002/193

A Note on Ideal Tripartite Access Structures

Michael J. Collins

Abstract: Padró and Sáez introduced the concept of a $k$-partite access structure for secret sharing, and gave a complete characterization of ideal bipartite structures. We derive a necessary condition for ideal tripartite structures, which we conjecture is necessary for all $k$.

Category / Keywords: secret sharing