Appeal No. 2003-0072
Application No. 09/032,407
specifically disclose the performance of electronic commerce
transactions over an unsecure network, and turns to Schneier for
such a teaching, specifically citing pages 37, and 483-502, for
performance of such transactions and for the teaching of a
“Digital Signature Algorithm without encryption” (page 37), it is
clear from even the title of Schneier (“Applied Cryptography”)
that Schneier is concerned with encryption.
But, even assuming, arguendo, that the cited portion of
Schneier, at page 37, is suggesting that a digital signature can
be employed over an unsecure network where there is no encryption
employed, there would appear to be no reason for the artisan to
combine any such teaching with Ginter since Ginter is not
interested in performing transactions over a network unless there
is encryption, i.e., Ginter is not interested in using unsecure
networks.
Furthermore, the examiner’s rationale for combining the
various references is suspect. It is proposed to “add the
modifications of Schneier to the method disclosed by Ginter
because such modifications would have provided ‘a separate
algorithm for digital signatures that cannot be used for
encryption’” (answer-page 6, without the underlining of the
examiner). But, why provide this separate algorithm in Ginter?
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