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A total of seven messages are required in the Public-Key distribution scenario. However, the initial five messages need to be used only infrequently because both A and B can save the other’s public key for future – a technique known as ____

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A total of seven messages are required in the Public-Key distribution scenario. However, the initial five messages need to be used only infrequently because both A and B can save the other’s public key for future – a technique known as ____

(a) time stamping

(b) polling

(c) caching

(d) squeezing

I got this question during an internship interview.

My doubt stems from Public Keys and X.509 Certificates-III topic in chapter Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

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The correct choice is (c) caching

Easiest explanation: This technique is known as caching.

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