US 12,411,922 B2
System for cancelable biometric feature data generation
Toshiyuki Isshiki, Tokyo (JP); and Hiroto Tamiya, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 18/290,475
Filed by NEC Corporation, Tokyo (JP)
PCT Filed May 26, 2021, PCT No. PCT/JP2021/020073
§ 371(c)(1), (2) Date Nov. 14, 2023,
PCT Pub. No. WO2022/249359, PCT Pub. Date Dec. 1, 2022.
Prior Publication US 2024/0273173 A1, Aug. 15, 2024
Int. Cl. G06F 21/32 (2013.01); H04L 9/08 (2006.01)
CPC G06F 21/32 (2013.01) [H04L 9/088 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A registration information generation apparatus for generating registration information based on registration-side input information input for registration, the registration-side input information including one or both of elements corresponding to a first set and elements corresponding to a second set that is different from the first set, the registration information generation apparatus comprising:
one or more memories storing an instruction; and
one or more processors configured to execute the instructions to
generate registration-side intermediate information from the registration-side input information by performing registration-side distribution processing for performing secret-sharing for the elements corresponding to the first set in input information, and a registration-side duplication processing for duplicating the elements corresponding to the second set in input information; and
perform registration-side permutation processing for permutating a sort order of elements in input information using a permutation key,
wherein the registration information is generated by permutating a sort order of elements in the registration-side intermediate information using the permutation key.