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Session keys are transmitted after being encrypted by

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Session keys are transmitted after being encrypted by

(a) make-shift keys

(b) temporary keys

(c) master keys

(d) section keys

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Query is from Symmetric Key Distribution in chapter Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

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Correct choice is (c) master keys

For explanation: Each node has a master key which it uses to receive the session key.

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