Software component authentication via encrypted embedded self-signatures
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United States of America Patent
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Issued Date -
Nov 29, 2007
app pub date -
Sep 6, 2002
filing date -
Sep 6, 2001
priority date (Note) -
Abandoned
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Abstract
This invention applies to software components that interconnect, as in a frameworks, such that only components 'certified' by some designated authority can participate, partly or wholly, in the intended operation of the application. The main emphasis is to limit the set of such software components to those that have been deemed to operate in some specific manner and/or in the scope of some specified set of constraints. The initial application for this invention is to prevent piracy of copyrighted data in multimedia frameworks such as Microsoft DirectShow, but the general invention has much wider applicability. Most authentication systems perform their actions prior to using the software component in question. This invention differs significantly in that it performs validation at runtime, rather than before the component is run. Thus, the validation is always at the most vulnerable point in a component's lifetime so far as counterfeiting is concerned.
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