, both A and B can produce evidence to prove that they received a signed message from the other party c) At time point 0, S cannot prove anything d) At time point 3, B cannot produce evidence to prove that A has access to key K e) At time point 1, A can prove that B is alive f) At time point 4, S can prove that A is alive g) At time point 3, S can produce evidence that that A has access to key K h) At time point 0, A is not alive
For the Zhou-Gollman non-repudiation protocol discussed in the lecture on “Non-Repudiation
and Anonymity Protocols”, which one of the following statements is false:
a) At time point 4, both A and B can produce evidence to prove that they received K
b) At time point 2, both A and B can produce evidence to prove that they received a signed
message from the other party
c) At time point 0, S cannot prove anything
d) At time point 3, B cannot produce evidence to prove that A has access to key K
e) At time point 1, A can prove that B is alive
f) At time point 4, S can prove that A is alive
g) At time point 3, S can produce evidence that that A has access to key K
h) At time point 0, A is not alive
i) At time point 2, A can produce evidence to prove that B is alive
j) At time point 4, the protocol terminates
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