I am just wondering what is the main difference between the Yahalom and Needham-Schroeder key exchange protocols? Which protocol uses less computational power?

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    I strongly suggest you shift this question to crypto.stackexchange.com, it seems this is more appropriate there.
    – Nasrus
    Nov 19, 2013 at 14:22

1 Answer 1


I have added a table which can be useful. From the number of encryption and decryption operations, decide for yourself which one is computationally expensive from a client and key server perspective. A, B are clients and S is the key server.

Number of operations

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