AUTHENTICATION APPARATUS, AUTHENTICATION SYSTEM, AUTHENTICATION METHOD, AND AUTHENTICATION PROGRAM
First Claim
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1. A transmission system, comprising:
- a transmission terminal to log in the transmission system; and
an authentication system to authenticate the transmission terminal before the transmission terminal logs in the transmission system, wherein;
the transmission terminal includes;
a first encryption processor to encrypt terminal identification information of the transmission terminal using a terminal private key assigned to the transmission terminal to generate encrypted terminal identification information; and
a transmit unit to transmit the encrypted terminal identification information and the terminal identification information to the authentication system, andthe authentication system includes;
a receive unit to receive the encrypted terminal identification information and the terminal identification information, from the transmission terminal;
a key extractor to obtain a terminal public key that corresponds to the terminal identification information received from the transmission terminal;
a first decryption processor to decrypt the encrypted identification information using the terminal public key to obtain decrypted identification information; and
a determiner to determine whether the decrypted identification information obtained by the first decryption processor matches the terminal identification information received from the transmission terminal to generate a determination result.
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Abstract
An authentication system receives encrypted terminal identification information and terminal identification information, from a transmission terminal, and determines whether decrypted identification information decrypted using a terminal public key obtained by the authenctaion system matches the terminal identification information received from the transmission terminal.
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Citations
14 Claims
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1. A transmission system, comprising:
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a transmission terminal to log in the transmission system; and an authentication system to authenticate the transmission terminal before the transmission terminal logs in the transmission system, wherein; the transmission terminal includes; a first encryption processor to encrypt terminal identification information of the transmission terminal using a terminal private key assigned to the transmission terminal to generate encrypted terminal identification information; and a transmit unit to transmit the encrypted terminal identification information and the terminal identification information to the authentication system, and the authentication system includes; a receive unit to receive the encrypted terminal identification information and the terminal identification information, from the transmission terminal; a key extractor to obtain a terminal public key that corresponds to the terminal identification information received from the transmission terminal; a first decryption processor to decrypt the encrypted identification information using the terminal public key to obtain decrypted identification information; and a determiner to determine whether the decrypted identification information obtained by the first decryption processor matches the terminal identification information received from the transmission terminal to generate a determination result. - View Dependent Claims (2, 3, 4, 5)
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6. An authentication apparatus for authenticating a transmission terminal before the transmission terminal logs in a transmission system, the apparatus comprising:
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a receive unit to receive encrypted terminal identification information and terminal identification information from the transmission terminal, wherein the encrypted terminal identification information is encrypted with a terminal private key assigned to the transmission terminal; a key extractor to obtain a terminal public key that corresponds to the terminal identification information received from the transmission terminal; a first decryption processor to decrypt the encrypted identification information using the terminal public key to obtain decrypted identification information; and a determiner to determine whether the decrypted identification information obtained by the first decryption processor matches the terminal identification information received from the transmission terminal to generate a determination result. - View Dependent Claims (7, 8, 9, 10)
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11. A recording medium which stores a plurality of instructions which, when executed, cause a processor to perform a method of authenticating a transmission terminal before the transmission terminal logs in a transmission system, the method comprising:
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encrypting terminal identification information of the transmission terminal using a terminal private key assigned to the transmission terminal to generate encrypted terminal identification information; transmitting the encrypted terminal identification information and the terminal identification information from the transmission terminal to an authentication system; obtaining, by the authentication system, a terminal public key that corresponds to the terminal identification information transmitted from the transmission terminal; decrypting, at the authentication system, the encrypted identification information using the terminal public key to obtain decrypted identification information; and determining whether the decrypted identification information obtained by the authentication system matches the terminal identification information transmitted from the transmission terminal to generate a determination result. - View Dependent Claims (12, 13, 14)
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Specification