Kabushiki Kaisha Toshiba

Toshiaki Saisho

Satomi Hori

Shinichi Kawamura

Hideo Shimizu

Naoki Endoh

Fumihiko Sano

Tomoaki Morijiri

Miki Yamada

Akito Niwa

Megumi Aoki

Tatsuya Ishihara

When a personal authentication is to be executed, the encryption section of an IC card encrypts biological data and supplies the obtained ciphertext to a sensor unit. When the decryption section of the sensor unit obtains biological data by decrypting the ciphertext, a collation section collates the biological data with input biological measurement data, thereby authenticating personal identification.

Personal authentication system and portable unit and storage medium used therefor

In an encryption apparatus for encrypting a data body to contain an encrypted data body in transmission data and transmitting the transmission data to a receiver, the transmission data includes sender's key recovery data obtained by encrypting recovery information for recovering a key for decrypting the encrypted data body to allow a key recovery agent registered by a sender to decrypt the recovery information, and receiver's key recovery data obtained by encrypting the recovery information for recovering the key for decrypting the encrypted data body to allow a key recovery agent registered by a receiver to decrypt the recovery information.

Encryption apparatus, cryptographic communication system, key recovery system, and storage medium

An information processing system includes a first information processing apparatus and a second information processing apparatus arranged separate from the first information processing apparatus and capable of exchanging a signal with the first information processing apparatus. The first information processing apparatus includes a first key generator for generating a first key, and a first encrypting unit for encrypting data using the first key generated by the first key generator to generate first encrypted information. The second information processing apparatus includes a second key storage unit for storing a second key, and a second encrypting unit for encrypting the first key using the second key stored in the second storage unit to generate second encrypted information. The first information processing apparatus further includes a correlation storage unit for storing the first encrypted information generated by the first encrypting unit and the second encrypted information generated by the second encrypting unit, the first encrypted information being correlated with the second encrypted information.

Information processing system having function of securely protecting

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Tokyo, Japan

Toshiaki Saisho