How many secret keys are needed to allow secret messages

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1. Assume Alice needs to send a confidential signed document to 100 people. How many keys does Alice need to use to prepare 100 copies if she uses asymmetric-key confidentiality? Explain.

2. In a club with 50 members, how many secret keys are needed to allow secret messages to be exchanged between any pair of members?

Reference no: EM131311161

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