Appeal 2007-0463
Application 09/896,537
authorized access level. Referring to the example depicted in FIG. 3 (reproduced
below), using base key 300 (i.e., the key commensurate with the client's
subscription, or rights, which is K_3 in this example), the agent 208 can create all
of the appropriate lower level keys (302 and 304 in this example) (id. at 7, para.
0024). Once all appropriate keys 300, 302, 304 have been obtained or created, the
encrypted
content 102 is decrypted into accessible content 306, i.e., sections 308, 310, and
312 of the content 100 (id.).
5
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Last modified: September 9, 2013