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What is Kerckhoffs principle and why is it relevant?

What is Kerckhoffs principle and why is it relevant?

PrepAway - Latest Free Exam Questions & Answers

A.
One-time pads should be just as long as the message, otherwise patterns will be shown.

B.
A public key needs to associated with an individual�s identity for true non-repudiation.

C.
The only secret portion to a cryptosystem should be the key so that the algorithms can be stronger.

D.
More than one alphabet should be used in substitution ciphers to increase the workfactor.

Explanation:
Auguste Kerckhoff published a paper in 1883 stating that the only
secrecy involved with a cryptography system should be the key. He claimed that the
algorithm should be publicly known. Cryptographers in the private and academic
sectors agree with Kerckhoffs principle, because making an algorithm publicly
available means that many more people can view the source code, test it, and uncover
any type of flaws or weaknesses.


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