Personal authentication system and portable unit and storage medium used therefor

Abstract

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.

1 - 3 . (Canceled)  
   
   
       4 . A personal authentication unit having tamper resistance, comprising: 
 tamper-resistant decryption means for obtaining registration data by decrypting an encrypted registration data supplied from a portable unit for storing the registration data and outputting the encrypted registration data obtained by encrypting the registration data;    input means for inputting input information; and    collation means for collating the registration data obtained from said decryption means with the input information input from said input means.    
   
   
       5 - 7 . (Canceled)  
   
   
       8 . A computer readable medium used for a tamper-resistant personal authentication unit having a computer and executing a personal authentication on the basis of an encrypted registration data supplied from a tamper-resistant portable unit for storing registration data and outputting the encrypted registration data obtained by encrypting the registration data, said medium storing a program which when executed performs a method comprising: 
 causing said computer to execute a decryption procedure for obtaining registration data by decrypting the encrypted registration data supplied from said portable unit;    causing said computer to execute an input procedure for inputting input information; and    causing said computer to execute a collation procedure for collating the registration data obtained by the decrypt procedure with the input information.    
   
   
       9 - 19 . (Canceled)