A cryptographic nonce is important for confirming that a party is active and fully participating in a protocol exchange. One reason attackers can succeed with many web-page attacks is that it is relatively easy to craft authentic-looking pages that spoof actual sites. Suggest a technique by which a user can be assured that a page is both live and authentic from a particular site. That is, design
a mark, data interchange, or some other device that shows the authenticity of a web page.
What will be an ideal response?
The
key
to
this
question
is
that
the
page
give
the
user
information
that
a
spoofer
could
not
have
predicted
in
advance.
This
could
mean
information
about
the
user
that
only
the
true
site
would
know
(e.g.,
last
login
time)
or
some
sort
of
interactivity
requirement
through
a
separate
channel
(e.g.,
an
ID
number
the
site
sent
the
user
in
the
mail).
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________ is by far the world’s most widely used desktop operating system.
a. Linux b. MacOS c. Windows d. none of the above
Find the error(s) in each of the following program segments, and explain how the error(s) can be corrected :
``` int sum(int n) { // assume n is nonnegative if (0 == n) return 0; else n + sum(n - 1); } ```
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Indicate whether the statement is true or false
The 1976 Copyright Act defines ____________________ as the distribution of copies of a work to the public by sale or other transfer of ownership, or by rental, lease, or lending.
Fill in the blank(s) with the appropriate word(s).