In transit detection of computer virus with safeguard
September 29, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesApparatus and method for searching a data base using variable search criteria Data compression, encryption, and in-line transmission system Apparatus for reproducing a pcm modulated signal, comprising a muting circuit System and method of protecting integrity of computer data and software Method and apparatus for protection of signal copy Reconfigurable signal processor System for character stream search using finite state automaton technique Computer file protection system Securing a computer against undesired write operations to or read operations from a mass storage device Patent #: 5144660 InventorsAssigneeApplicationNo. 954784 filed on 09/29/1992US Classes:713/188, COMPUTER VIRUS DETECTION BY CRYPTOGRAPHY714/819Comparison of dataExaminersPrimary: Atkinson, Charles E.Assistant: Hua, Ly V. Attorney, Agent or FirmInternational ClassH04L 009/00AbstractData is tested in transit between a source medium and a destination medium, such as between two computer communicating over a telecommunications link or network. Each character of the incoming data stream is tested using a finite state machine which is capable of testing against multiple search strings representing the signatures of multiple known computer viruses. When a virus is detected the incoming data is prevented from remaining on the destination storage medium. Both hardware and software implementations are envisioned.Other References
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