Title:
無線通信システム
Document Type and Number:
Japanese Patent JP4688426
Kind Code:
B2
Abstract:
A small-scale wireless communication system offering advanced security level. An encryption key memory of an access point stores an encryption key list of a plurality of different encryption keys. A change information transmitter periodically transmits change information to a terminal by radio, the change information requesting the change of encryption key. An encryption key selector selects an encryption key from the encryption key list under a rule when the change information transmitter transmits the change information. A terminal-side encryption key memory of the terminal stores a terminal-side encryption key list which is the same as the encryption key list. A change information receiver receives the change information from the access point. Upon reception of the change information, a terminal-side encryption key selector selects an encryption key from the terminal-side encryption key list under a rule which is the same as the rule which the encryption key selector used to select the encryption key.
Inventors:
Naofumi Kayashima
Yuji Nagano
Yuji Nomura
Yuji Nagano
Yuji Nomura
Application Number:
JP2004064922A
Publication Date:
May 25, 2011
Filing Date:
March 09, 2004
Export Citation:
Assignee:
富士通株式会社
International Classes:
H04L9/16; H04K1/00; H04L9/00; H04L12/28; H04W12/00; H04W12/04; H04W84/12; H04W88/08
Domestic Patent References:
| JP9083506A | ||||
| JP11331151A | ||||
| JP2001111543A | ||||
| JP2002112133A | ||||
| JP2002290396A | ||||
| JP2003101528A | ||||
| JP2003258788A | ||||
| JP2003258790A | ||||
| JP2003333031A | ||||
| JP2004007567A |
Attorney, Agent or Firm:
Takeshi Hattori