EP0316689A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Portable electronic apparatus
Assignee: Toshiba Corp
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Filing: 1988-11-04
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Granted: —
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Expires: 2008-11-04
Abstract
Abstract In an IC card having an update function of transaction data, account type, supplementary amount, and valid date are input to the IC card. The IC card adds a renewal number data held therein to the input transaction data, and the data is encrypted using key data, thus generating reference confirmation data. Input confirmation data is generated using the identical encryption generation algorithm by a host system of a credit company. The input confirmation data is supplied to the IC card. A comparison means in the IC card compares the input confirmation data with the generated reference confirmation data. As a result of the comparison, if these data coincide each other, the input data is stored in the memory in the IC card as new transaction data and update processing is executed.
Inventors
- 👤 Masuo C/O Patent Division Tamada
- 👤 Hideo C/O Patent Division Matsuoka
- 👤 Tsutomu C/O Patent Division Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 06:22
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G07; G07F; G07F7/00; G07F7/08; G07F7/10; G07F7/1008; G06Q; G06Q20/00; G06Q20/30; G06Q20/34; G06Q20/341; G06Q20/3415; G06Q20/36; G06Q20/367; G06Q20/38; G06Q20/382; G06Q20/40; G06Q20/409; G06Q20/4093; G07F7/0806; G07F7/0813; G07F7/082
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
182 words
A portable electronic apparatus comprising data storing means (30) for storing transaction data, input means (5) for inputting the transaction data to be stored in said data storing means, and control means (27, 28) for controlling said transaction data storing means and said input means, characterized in that said input means (5) inputs confirmation data for confirming a validity of the transaction data; said apparatus comprising: additional data generating means (27, 28, 30, 32) for generating additional data which differs one another for every generation; means (37) for generating internal confirmation data from data which includes the additional data from said additional data generating means and the transaction data input from said input means; comparing means (27, 28) for comparing the internal confirmation data generated by said internal confirmation data generating means with the confirmation data input from said input means and outputting the comparison result; and said control means (27, 28) stores the transaction data input from said input means into said data storing means (30) as new transaction data when the comparison result from said comparing means represents a coincidence.
Claim 2
Dependent Claim
182 words
A portable electronic apparatus comprising data storing means (30) for storing transaction data, input means (5) for inputting the transaction data to be stored in said data storing means, and control means (27, 28) for controlling said transaction data storing means and said input means, characterized in that said input means (5) inputs confirmation data for confirming a validity of the transaction data; said apparatus comprising: additional data generating means (27, 28, 30, 32) for generating additional data which differs one another for every generation; means (37) for generating internal confirmation data from data which includes the additional data from said additional data generating means and the transaction data input from said input means; comparing means (27, 28) for comparing the internal confirmation data generated by said internal confirmation data generating means with the confirmation data input from said input means and outputting the comparison result; and said control means (27, 28) stores the transaction data input from said input means into said data storing means (30) as new transaction data when the comparison result from said comparing means represents a coincidence.
Claim 3
Dependent Claim
20 words
An apparatus according to claim 1, characterized in that the additional data includes a renewal number of the transaction data.
Claim 4
Dependent Claim
44 words
An apparatus according to claim 1, characterized in that said internal confirmation data generating means generates the internal confirmation data data by encrypting a combination of the additional data and the transaction data, using a binary value on the basis of Data Encryption Standard.
Claim 5
Dependent Claim
21 words
An apparatus according to claim 1, characterized in that the transaction data includes credit limit data, and expiration valid date data.
Claim 6
Dependent Claim
71 words
An apparatus according to claim 4, characterized in that said control means includes an update means for updating at least one of the credit limit data and the expiration date data, said additional data generating means includes means for changing a renewal number which is changed upon every execution of the update processing, and said internal confirmation data generating means generates different internal confirmation data upon every performing of update processing.
Claim 7
Dependent Claim
27 words
An apparatus according to claim 1, characterized in that said apparatus is operatively connected to a host system, the confirmation data being generated by said host system.
Claim 8
Dependent Claim
31 words
An apparatus according to claim 6, wherein said internal confirmation data generating means includes a same data generating means as means for generating the confimation data, provided in said host system.
Claim 9
Dependent Claim
32 words
An apparatus according to claim 5, characterized in that said additional data generating means includes means for protecting the renewal number from being updated when an external access is the update processing.
Claim 10
Dependent Claim
68 words
An apparatus according to claim 4, characterized in that said apparatus includes an update function for updating at least one of the transaction amount data and the transaction valid date data, said encryption generating additional data generating means is a timer for generating date data, and said reference confirmation data generating means generates different reference confirmation data using the date data from said timer upon every update processing.
Claim 11
Dependent Claim
73 words
An apparatus according to claim 4, characterized in that said apparatus includes an update function for updating at least one of the transaction amount data and the transaction valid date data, said encryption generating additional data generating means (27, 28, 30, 32) is a counter for counting the transaction number, and therefore, said reference confirmation data generating means generates different confirmation data using the transaction number from said counter upon every update processing.
Claim 12
Dependent Claim
15 words
An apparatus according to claim 1, characterized in that said apparatus is an IC card.
Claim 13
Dependent Claim
101 words
A portable electronic apparatus characterized by further comprising: memory means (30) for storing data; input means (5) for inputting the data; control means (27, 28) for controlling said memory means and said input means; confirmation data generating means (37) for generating confirmation data encrypted using predetermined key data on the basis of input data from said input means and inherent data present in said portable electronic apparatus; and authentication means (27, 28) for verifying the confirmation data, generated by said confirmation data generating means, with the confirmation data input from said input means, to authenticate the validity of the input data.
Claim 14
Dependent Claim
101 words
A portable electronic apparatus characterized by further comprising: memory means (30) for storing data; input means (5) for inputting the data; control means (27, 28) for controlling said memory means and said input means; confirmation data generating means (37) for generating confirmation data encrypted using predetermined key data on the basis of input data from said input means and inherent data present in said portable electronic apparatus; and authentication means (27, 28) for verifying the confirmation data, generated by said confirmation data generating means, with the confirmation data input from said input means, to authenticate the validity of the input data.
References Cited (Backward Citations)
No citation records indexed.
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