Encryption key setting system, access point, encryption key setting method, and authentication code setting system
First Claim
1. An encryption key setting system that sets an encryption key, which is used to encrypt radio communication data transmitted between an access point as a relay station for a wireless LAN and a terminal equipped with a device for connecting with the wireless LAN prior to the transmission, in said terminal, said encryption key setting system comprising:
- a communication range restriction module that restricts a radio communication range between said access point and said terminal to be narrower than a general communication range; and
an encryption key setting module that, while the radio communication range is restricted by said communication range restriction module, transmits encryption key data representing the encryption key by wireless between said terminal and said access point located within the restricted radio communication range, so as to set the encryption key.
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Accused Products
Abstract
In an encryption key setting system of the present invention, in response to an operation of a registration button 127, an access point 20 restricts the coverage of radio wave transmitted from the access point 20 from a general radio communication area AR1 to a narrower security communication area MR1. The access point 20 subsequently delivers a WEP key to a terminal 50, confirms the successful delivery, and registers a MAC address of the terminal 50. The terminal 50 sets the delivered WEP key in itself. This arrangement desirably allows for new enrollment of a terminal for a wireless LAN by a simple method, while effectively preventing leakage of data representing an encryption key.
65 Citations
9 Claims
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1. An encryption key setting system that sets an encryption key, which is used to encrypt radio communication data transmitted between an access point as a relay station for a wireless LAN and a terminal equipped with a device for connecting with the wireless LAN prior to the transmission, in said terminal, said encryption key setting system comprising:
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a communication range restriction module that restricts a radio communication range between said access point and said terminal to be narrower than a general communication range; and
an encryption key setting module that, while the radio communication range is restricted by said communication range restriction module, transmits encryption key data representing the encryption key by wireless between said terminal and said access point located within the restricted radio communication range, so as to set the encryption key. - View Dependent Claims (3, 4, 5, 6)
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2. An encryption key setting system in accordance with claim 2, said encryption key setting system further comprising:
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an instruction module that gives an instruction to start setting of the encryption key; and
a condition specification module that specifies a condition of restricting the radio communication range to be narrower than the general communication range, based on the instruction given by said instruction module, wherein said communication range restriction module restricts the radio communication range under the condition specified by said condition specification module.
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7. An access point that is a relay station for a wireless LAN and establishes wireless communication with a terminal equipped with a device for connecting with the wireless LAN, said access point encrypting radio communication data as an object of communication with a preset encryption key, prior to wireless communication with said terminal, and transmitting the encrypted radio communication data to and from said terminal by wireless, said access point comprising:
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a communication range restriction module that restricts a radio communication range between said access point and said terminal to be narrower than a general communication range; and
an encryption key setting module that, while the radio communication range is restricted by said communication range restriction module, transmits encryption key data representing the encryption key by wireless to and from said terminal located in the restricted radio communication range, so as to set the encryption key.
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8. An encryption key setting method that sets an encryption key, which is used to encrypt radio communication data transmitted between an access point as a relay station for a wireless LAN and a terminal equipped with a device for connecting with the wireless LAN prior to the transmission, in said terminal, said encryption key setting method comprising the steps of:
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(a) restricting a radio communication range between said access point and said terminal to be narrower than a general communication range; and
(b) while the radio communication range is restricted in said step (a), transmitting encryption key data representing the encryption key by wireless between said terminal and said access point located within the restricted radio communication range, so as to set the encryption key.
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9. An authentication code setting system that sets an authentication code, which is required when a terminal equipped with a device for connecting with a wireless LAN establishes wireless communication with an access point as a relay station for the wireless LAN to gain access to preset data on a network, in at least one of said terminal and said access point, said authentication code setting system comprising:
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a communication range restriction module that restricts a radio communication range between said access point and said terminal to be narrower than a general communication range; and
an authentication code setting module that, while the radio communication range is restricted by said communication range restriction module, transmits data representing the authentication code by wireless between said terminal and said access point located within the restricted radio communication range, so as to set the authentication code.
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Specification