Transaction authentication system
First Claim
1. A transaction authentication system comprising:
- terminal means including;
first processing means; and
a card reader/writer;
a first memory means; and
an integrated circuit card which is detachably loaded into said card reader/writer, said integrated circuit card including;
second processing means; and
second memory means,said terminal means supplying at least a transaction data which is related to a transaction and a designated storage region in said second memory means for storing the transaction data to said integrated circuit card when said integrated circuit card makes an access to a service via said terminal means,said second processing means of said integrated circuit card writing the transaction data received from said terminal means in the designated storage region of said second memory means and generating a verified data which is renewed every time the transaction data is written into said second memory, said verified data having a value in conformance with a predetermined generating algorithm using the verified data stored previously in said second memory, said verified data being stored in said second memory means and also supplied to said terminal means,said first processing means of said terminal means generating transaction historical information which includes at least the designated storage region, the transaction data and the verified data, and storing the transaction historical information in said first memory means, thereby a transaction being authenticated from a correspondence of the verified data stored in said first memory means and the verified data stored in said second memory means.
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Accused Products
Abstract
A transaction authentication system comprises a terminal, a first memory and an IC card which is detachably loaded into the terminal. The terminal supplies at least transaction data which is related to a transaction a designated storage region in a second memory stores the transaction data to the IC card when the IC card accesses to a service via the terminal. A second processor of the IC card writes the transaction data received from the terminal in the designated storage region of the second memory and generates a vertified data which is renewed every time the transaction data is written into the second memory. The verified data has a value in conformance with a predetermined generating algorithm and is stored in the second memory and also supplied to the terminal. A first processor of the terminal generates transaction historical information which includes at least the designated storage region, the transaction data and the vertified data and stores the transaction historical information in the first memory. Thus a transaction is authenticated from a corresponding of the verified data stored in the first memory and the verified data stored in the second memory.
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Citations
18 Claims
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1. A transaction authentication system comprising:
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terminal means including; first processing means; and a card reader/writer; a first memory means; and an integrated circuit card which is detachably loaded into said card reader/writer, said integrated circuit card including; second processing means; and second memory means, said terminal means supplying at least a transaction data which is related to a transaction and a designated storage region in said second memory means for storing the transaction data to said integrated circuit card when said integrated circuit card makes an access to a service via said terminal means, said second processing means of said integrated circuit card writing the transaction data received from said terminal means in the designated storage region of said second memory means and generating a verified data which is renewed every time the transaction data is written into said second memory, said verified data having a value in conformance with a predetermined generating algorithm using the verified data stored previously in said second memory, said verified data being stored in said second memory means and also supplied to said terminal means, said first processing means of said terminal means generating transaction historical information which includes at least the designated storage region, the transaction data and the verified data, and storing the transaction historical information in said first memory means, thereby a transaction being authenticated from a correspondence of the verified data stored in said first memory means and the verified data stored in said second memory means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification