Question: In the network of seven nodes shown below, a one - on - one secure communication has to be established between every pair of nodes.

In the network of seven nodes shown below, a one-on-one secure communication has to be established between every pair of nodes. That is, A and B have to securely communicate with each other, B and C have to securely communicate with each other, and so on.
a. What is the total number of keys required if symmetric key cryptography is used?
b. What is the total number of keys required if asymmetric key cryptography is used?
In the network of seven nodes shown below, a one-on-one secure

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