Key allocating method and key allocation system for encrypted communication
First Claim
1. A communication system comprising:
- a communication source terminal, a communication destination terminal, and a management server;
wherein;
said communication source terminal transmits a connection request between communication source terminal and communication destination terminal to the management server;
said management server searches the setting information for encrypted communications which have been previously registered thereinto by both said communication source terminal and said communication destination terminal for setting information, which of said communication source terminal is coincident with one of said communication destination terminal; and
in the case that the management server can search for the coincident setting information for the encrypted communication, both the communication source terminal and the communication destination terminal perform an encrypted communication by employing a key for the encrypted communication, which has been produced based upon said coincident setting information for the encrypted communication.
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Accused Products
Abstract
Both a management server and a validation server are installed. Both a terminal and a terminal register setting information which is usable in an encrypted communication in the management server. When carrying out the encrypted communication, the management server searches the registered setting information for coincident setting information. The management server generates keys for the encrypted communications which can be used by the terminals, and delivers these generated keys in combination with the coincident setting information. The management server authenticates both the terminals in conjunction with the validation server. Since the terminals trust such results that the management server has authenticated the terminals respectively, these terminals need not authenticate the respective communication counter terminals.
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Citations
10 Claims
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1. A communication system comprising:
- a communication source terminal, a communication destination terminal, and a management server;
wherein;
said communication source terminal transmits a connection request between communication source terminal and communication destination terminal to the management server;
said management server searches the setting information for encrypted communications which have been previously registered thereinto by both said communication source terminal and said communication destination terminal for setting information, which of said communication source terminal is coincident with one of said communication destination terminal; and
in the case that the management server can search for the coincident setting information for the encrypted communication, both the communication source terminal and the communication destination terminal perform an encrypted communication by employing a key for the encrypted communication, which has been produced based upon said coincident setting information for the encrypted communication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a communication source terminal, a communication destination terminal, and a management server;
Specification