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Network security: To understand the concept of symmetric key distribution, assume a small private club has only 100 members (excluding the president). Answer the following
Network security:
To understand the concept of symmetric key distribution, assume a small private club has only 100 members (excluding the president). Answer the following questions:
- How many secret keys are needed if all members of the club need to send secret message with each other?
- How many secret keys are needed if everyone trusts the president of the club? If a member needs to send a message to another member, she first sends it to the president; the president then sends the message to the other member.
- How many secret keys are needed if the president decides that the two members who need to communicate should contact him first. The president then creates a temporary key to be used between the two. The temporary key is encrypted and sent to both members
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