| 摘要 |
PURPOSE:To manage easily a cipher key by providing a means for generating a variable common to a group by inputting a function generated by a cipher device which has been set to a main mode, in case when it has been set to a sub-mode. CONSTITUTION:A mode setting part sets a main mode and a sub-mode. A common key generating part 9 generates a variable common to a group by inputting a function generated by a cipher device which has been set to the main mode, in case when it has been set to the sub-mode. When a power source switch 2 provided on a power source part 1 of the cipher device, or a key generation start switch 11 is turned on, a key generating part 4 is started. When the setting part 8 is set to the sub-mode, the common key generating part 9 generates the variable common to the group, and transfers it to a cipher key operating part 5.
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