Electrical computers and digital processing systems: support – Computer virus detection by cryptography
Reexamination Certificate
2005-09-13
2005-09-13
Sheikh, Ayaz (Department: 2136)
Electrical computers and digital processing systems: support
Computer virus detection by cryptography
C713S193000, C713S152000, C380S277000, C711S163000, C235S380000, C705S051000, C705S057000
Reexamination Certificate
active
06944769
ABSTRACT:
An apparatus and a method in a data processing system are provided for insuring the security of data accessed from removable media. Normal virus scanning occurs after data is loaded into the main memory, but infection by a virus may have already occurred by this time. Therefore, it would be beneficial to check for possible virus infection before the data is transferred to main memory. A security key is read from the removable media. As encrypted data is read from the device, it is decrypted using the security key and then re-encrypted using the same security key to produce new data. The original data is accepted and sent to main memory if it is identical to the new data produced by decryption and re-encryption. If the two sets of data are not identical, then the data transmission from the device is aborted and all data on the removable media is rejected. The decryption/re-encryption checking is performed in hardware and so it can occur in real time. This hardware could be on the device controller, a separate security card, the mother board, or anywhere along the data path from the device controller to the main memory.
REFERENCES:
patent: 5451757 (1995-09-01), Heath, Jr.
patent: 5602918 (1997-02-01), Chen et al.
patent: 5892211 (1999-04-01), Davis et al.
patent: 5991401 (1999-11-01), Daniels et al.
patent: 6615192 (2003-09-01), Tagawa et al.
patent: 6681195 (2004-01-01), Poland et al.
patent: 6711553 (2004-03-01), Deng et al.
patent: 2001/0044886 (2001-11-01), Cassagnol et al.
patent: 2002/0101998 (2002-08-01), Wong et al.
Daniels Scott Leonard
Neal Danny Marvin
Ng Yat Hung
Colin Carl G.
International Business Machines - Corporation
McBurney Mark E.
Sheikh Ayaz
Yee Duke W.
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