Preboot protection of unauthorized use of programs and data with a card reader interface
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United States of America Patent
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Jul 5, 1994
Grant Date -
N/A
app pub date -
Jun 4, 1992
filing date -
Jun 4, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A secure computer controlling access to internal devices via an integrated card reader. A microprocessor-controlled card reader interface logically connected to the CPU of the computer reads and writes information from and to a card placed in the card reader and performs additional functions in response to commands received from the CPU. The boot ROM of the computer is programmed to start execution from a program logic device which runs a verification program to verify the authenticity of a user. Upon a valid user card being placed in the card reader, one or more questions are read from the card and displayed to the user. The user's responses are saved and compared to the correct answers stored on the card, and if the responses match the correct answers, a power control circuit is used by the CPU to turn on power to computer peripherals the user has been authorized to use. The system additionally provides for a method of initializing and authorizing a user card with a security administrator card. Upon a valid security administrator card being placed in the card reader, a security administrator initializes and authorizes one or more individual user cards by selecting from a list of menu options displayed to the security administrator. The security administrator inputs a list of questions and answers which are then stored on the user card for use during the verification procedure. The system further provides for the physical and logical destruction of data in response to unauthorized attempts by a user to violate the physical or logical integrity of the computer system. The physical and logical destruction of data may be disabled for maintenance or configuration purposes by the use of a maintenance card.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- CEDAR WEST C/O GESTINOR SERVICES;HILLIARD LIMITED PARTNERSHIP;INDEPENDENCE PLAZA, INC.;LENOWITZ, MARK;MILLER, HOWARD;OFFIT, ANDREW;SARNO, MARK;SIMON, DEBRA
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
GLazier, James B | Hopkins, MN | 3 | 99 |
Goshgarian, Paul | Mound, MN | 2 | 83 |
Kimlinger, Joseph A | Willernie, MN | 4 | 157 |
Mooney, David M | Eden Prairie, MN | 8 | 479 |
Wood, David E | Shorewood, MN | 16 | 314 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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