[ox] Digital rights management operating system
- From: Robert Gehring <zoroaster snafu.de>
- Date: Thu, 13 Dec 2001 00:01:12 +0000
Die Meldung kam über /. Könnte ev. von Interesse sein.
"United States Patent 6,330,670
England , et al. December 11, 2001
Digital rights management operating system
Abstract
A digital rights management operating system protects rights-managed data,
such as downloaded content, from access by untrusted programs while the data
is loaded into memory or on a page file as a result of the execution of a
trusted application that accesses the memory. To protect the rights-managed
data resident in memory, the digital rights management operating system
refuses to load an untrusted program into memory while the trusted
application is executing or removes the data from memory before loading the
untrusted program. If the untrusted program executes at the operating system
level, such as a debugger, the digital rights management operating system
renounces a trusted identity created for it by the computer processor when
the computer was booted. To protect the rights-managed data on the page file,
the digital rights management operating system prohibits raw access to the
page file, or erases the data from the page file before allowing such access.
Alternatively, the digital rights management operating system can encrypt the
rights-managed data prior to writing it to the page file. The digital rights
management operating system also limits the functions the user can perform on
the rights-managed data and the trusted application, and can provide a
trusted clock used in place of the standard computer clock.
Inventors:
England; Paul (Bellevue, WA); DeTreville; John D. (Seattle, WA); Lampson;
Butler W. (Cambridge, MA)
Assignee:
Microsoft Corporation (Redmond, WA)
Appl. No.:
227561
Filed:
January 8, 1999"
Quelle:
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-adv.htm&r=1&f=G&l=50&d=CR99&S1=5,892,900.UREF.&OS=ref/5,892,900&RS=REF/5,892,900
Gruß, Robert
--
Von/From: Dipl.-Inform. Robert Gehring
E-Mail: rag cs.tu-berlin.de
privat: zoroaster snafu.de
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