| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secret communication method for realizing network communication with more safety and reliability. <P>SOLUTION: In the secret communication using a cipher by an information apparatus that can use a memory unit and an arithmetic unit, the encryption of data or the decryption of data is carried out automatically in an encryption method and a decryption method uniquely identified to the ordered pair of a transmitter and a receiver, and at the same time, the receiver can previously appoint freely the encryption method corresponding to the ordered pair. <P>COPYRIGHT: (C)2003,JPO |
