Multiple Ramp

A (t; k; n; S) ramp scheme is a protocol to distribute a secret s chosen in S among a set P of n participants in such a way that: 1) sets of participants of cardinality greater than or equal to k can reconstruct the secret s; 2) sets of participants of cardinality less than or equal to t have no information on s, whereas 3) sets of participants of… (More)