| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent leakage and alteration of data in a communication unit on a data transmission side and a communication unit on a data reception side. <P>SOLUTION: A system is provided with HD 170 storing received enciphered data, HD 160 storing transmitted enciphered data, an information processor 110 in which received enciphered data is written into HD170 and enciphered data being an object of transmission is read from HD 160, an information processor 120 from which enciphered data stored in HD 170 is read and which decodes enciphered data by using a private key, an authentication means 130 authenticating a password added to data decoded by the information processor 120 and a password which is previously transmitted, an information processor 130 which reads enciphered data whose password is recognized to match by the authentication means 130 and is stored in HD 170, and writes enciphered data being an object of transmission into HD 160, and a resetting means 123 resetting enciphered data which the information processor 120 reads. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
