[1] : Jargon File (4.3.1, 29 Jun 2001)

orange book n. the u.s. government's now obsolete standards document
   "trusted computer system evaluation criteria, dod standard 5200.28-std,
   december, 1985" which characterize secure computing architectures and
   defines levels a1 most secure through d least. modern unixes are
   roughly c2. see also crayola books, book titles.


see also:
crayola books book titles 

[2] : The Free On-line Dictionary of Computing (27 SEP 03)

orange book
     
         a standard from the us government
        national computer security council an arm of the
        u.s. national security agency, "trusted computer system
        evaluation criteria, dod standard 5200.28-std, december 1985"
        which defines criteria for trusted computer products.  there
        are four levels, a, b, c, and d.  each level adds more
        features and requirements.
     
        d is a non-secure system.
     
        c1 requires user log-on, but allows group id.
     
        c2 requires individual log-on with password and an audit
        mechanism.  most unix implementations are roughly c1, and
        can be upgraded to about c2 without excessive pain.
     
        levels b and a provide mandatory control.  access is based on
        standard department of defense clearances.
     
        b1 requires dod clearance levels.
     
        b2 guarantees the path between the user and the security
        system and provides assurances that the system can be tested
        and clearances cannot be downgraded.
     
        b3 requires that the system is characterised by a mathematical
        model that must be viable.
     
        a1 requires a system characterized by a mathematical model
        that can be proven.
     
        see also crayola books, book titles.
     
        jargon file
     
        1997-01-09
     
     
see also:
national computer security council group id unix crayola books book titles jargon file 

Book >> B Words
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Book Value >> B Words
Book Value, definition of term: Book Value
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Book Review >> B Words
Book Review, definition of term: Book Review
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Book Bag >> B Words
Book Bag, definition of term: Book Bag
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Agent Orange >> A Words
Agent Orange, definition of term: Agent Orange
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Black Book >> B Words
Black Book, definition of term: Black Book
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Blue Book >> B Words
Blue Book, definition of term: Blue Book
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Book Of Mormon >> B Words
Book Of Mormon, definition of term: Book Of Mormon
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