| 摘要 |
PROBLEM TO BE SOLVED: To provide a tamper detection device capable of being applied efficiently to secrecy computing and making tamper success probability lower than a conventional device.SOLUTION: A tamper detection device 1 comprises: a selection part 12 for selecting M random numbers of r,...,r; a generation part 13 for generating a checksum c by using an order number d(i,j) obtained on the basis of N values of a,...,a, the random numbers r,...,r, an index i (0≤i≤N-1) of the values of a,...,a, and an index j (0≤j≤M-1) of the random number r,...,r; and a verification part 14 for verifying whether any of the values of a,...,ais tampered by comparing the checksum c with a verification value obtained after calculating by using the values a,...,a, the random number r,...,r, and the order number (i,j). However, M and N are integers of two or more and M<N. |
