Appeal No. 1997-3178
Application 08/464,069
information stored in the claimed digital data structure to
both 'confirm the identity of the legitimate computer user
and to recover the secret digital information.' The log-in
agent is not a 'trustee.'" Appellant argues that the login
agent (LA) is not trusted with the user's private key and,
as a result, the LA cannot impersonate a legitimate user.
Appellant evidently reads a lot into the term
"trustee," but does not state exactly what. Since the LA is
disclosed to be "semi-trusted" (col. 4, line 11), we find
this to meet the "trustee" limitation absent any
qualifications on the term in the claim. There can be many
levels of "trustee." Claims 25 and 32 do not require the
"secret digital information" to be understandable by the
trustee. The argument is not persuasive.
With respect to claims 26 and 33, the Examiner states
"that the LA identifier includes the public key LA-PUB"
(EA7). The LA is not information identifying the trustee
stored in the digital data structure in figure 4 of Kaufman.
The anticipation rejection of claims 26 and 33, and
dependent claims 43 and 44, over Kaufman is reversed.
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