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Authors:
William Stallings
Chapter:
Electronic Mail Security
Exercise:
Problems
Question:8 | ISBN:9781292158587 | Edition: 7

Question

A PGP user may have multiple public keys. So that a recipient knows which public key is being used by a sender, a key ID, consisting of the least significant 64 bits of the  public key, is sent with the message. What is the probability that a user with N public keys will have at least one duplicate key ID?

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