System for collating individual by encipherment individual feature information

Abstract

Abstract PURPOSE:To obtain a constitution to be able to comfort to the revision of the algorithm of a feature extracting without damaging safety by binarizing individual feature information, recording encipherment feature information to encipher the individual feature information, registering encipherment key information in correspondence to a individual identification number, reading the encipherment key information, further, besides this, reading the encipherment feature information, decoding them, and restoring the original individual feature information. CONSTITUTION:A fingerprint image inputted from an individual feature information input part 1 is binarized and stored to an individual feature information temporary storing part 2. This binarization image is enciphered by an encipherment part 7 with using an encipherment key peculiar to the individual identification number of the person. At the time of a collating, the individual identification number is inputted by an individual identification number input part 8 at first. Next, a photoelectric conversion is executed on a storing medium from the encipherment feature information by a storing medium information input part 3 and the encipherment binarized image is read. Then, the encipherment key information registered to a collating device side are retrieved by the using the individual identification number and a reverse conversion is executed by using the obtained encipherment key. Thus, a decoding is executed and the binarization image of the fingerprint at a registering time is reproduced.

Inventors

• 👤 Seigo Igaki
• 👤 Hironori Yahagi
• 👤 Shin Eguchi
• 👤 Hiroyuki Ikeda
• 👤 Yushi Inagaki

Bibliographic Details