Smart card validation device and method
First Claim
1. A validation device for a smartcard of the kind having unprotected data storage memory and protected data storage memory selectively accessible by means of a user access code, said device comprising:
- encryption means to perform an encryption upon identification data to produce said user access code;
means to read identification data from said unprotected memory to said encryption means;
means to supply said access code to the smartcard to obtain access to said protected memory;
means to read selected data from said protected memory to said encryption means for encryption to produce validating data;
comparator means to compare said identification data with said validating data and reject the smartcard if the data do not agree; and
means responsive to said comparator means to indicate validation of said protected memory data if the data do agree.
1 Assignment
0 Petitions
Accused Products
Abstract
A validation device (2) for a smart card (1) of the kind having unprotected data storage memory (4) and protected data storage memory (5) selectively accessible by means of a user access code. The device (2) performs an encryption upon identification data to produce the user access code and reads identification data from the unprotected memory (4) for further encryption. The access code is supplied to the smart card (1) and selected data from said protected memory (5) is read for encryption to produce validating data. A comparator (8) compares the identification data with the validating data and rejects the smart card (1) if the data do not agree and establishes access to said protected memory (5) if the data do agree.
364 Citations
11 Claims
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1. A validation device for a smartcard of the kind having unprotected data storage memory and protected data storage memory selectively accessible by means of a user access code, said device comprising:
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encryption means to perform an encryption upon identification data to produce said user access code; means to read identification data from said unprotected memory to said encryption means; means to supply said access code to the smartcard to obtain access to said protected memory; means to read selected data from said protected memory to said encryption means for encryption to produce validating data; comparator means to compare said identification data with said validating data and reject the smartcard if the data do not agree; and means responsive to said comparator means to indicate validation of said protected memory data if the data do agree. - View Dependent Claims (2, 3, 4, 5, 6, 11)
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7. A method for validating access to smartcards of the kind having unprotected data storage memory and protected data storage memory selectively accessible by means of a user access code, said method including the steps of:
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reading identification data from said unprotected memory; encrypting said identification data to produce a user access code; supplying said user access code to said smartcard; reading selected data from said protected memory; encrypting said selected data to produce validating data; comparing said identification data with said validating data; and rejecting the smartcard if the data do not agree and validating said protected memory data if the data do agree. - View Dependent Claims (8, 9, 10)
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Specification