Question: . Answer the following Consider the Diffe-Helmman scheme for key exchange, with common prime q = 23 and a primitive root a = 5. What

. Answer the following

  1. Consider the Diffe-Helmman scheme for key exchange, with common prime q = 23 and a primitive root a = 5. What is the shared key? (assume values for XA and XB) (5)

  1. Considering padding bits stage of SHA-512. Use the least five digits of your Student ID as a message length. (example: if the ID is 201710300 then the message length =10300) (2 5)
  1. What is the number of the added padding bits?

2. Why are these padding bits added?

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