INFORMATION SEARCH PROGRAM, INFORMATION SEARCH METHOD, AND INFORMATION SEARCH APPARATUS

摘要

PROBLEM TO BE SOLVED: To enhance confidentiality of data to be searched, and enable high-speed searching.SOLUTION: An information search program causes a mobile terminal 1 as: a search data acquisition unit 11 which acquires search data; a search data hash value calculation unit 12 which applies a hash function to the search data to calculate a search data hash value; an encrypted data search unit 13 which searches encrypted data associated with a field data hash value coincide with the search data hash value, from an encryption information DB 20, with respect to one piece of field data in record data including multiple pieces of field data; an encrypted data decryption unit 14 which applies a common key to the encrypted data to generate decrypted record data; and a field data output unit 15 which outputs field data included in the record data.