| 摘要 |
A second set including a plurality of elements a 5 (1), ..., a 5 (N) or a concealed text of the second set is obtained, where the second set is obtained by setting a replication source element a(f(h)) included in a first set to an element a(f(h))-a(f(h-1)) and setting elements other than the replication source in the first set to zero with respect to h=2, ..., M. An additive inverse of a replication source element a(f(h-1)) of which the order is before the replication source element a(f(h)) and is the closest to the replication source element a(f(h)) is -a(f(h-1)). The second set or the concealed text of the second set is used to obtain a third set or a concealed text of the third set. The third set is a set including a first element b(1)=a 5 (1) and i=2, ..., Nth element b(i)=b(i-1)+a 5 (i). |
