Given the terminology used in class, and assuming symmetric keys (shared secret) below: m -> 'hello world' assume KA and KB are Alice's and Bob's shared secret keys. KB(KA(m)) A) t... Given the terminology used in class, and assuming symmetric keys (shared secret) below: m -> 'hello world' assume KA and KB are Alice's and Bob's shared secret keys. KB(KA(m)) A) the phrase hello word encrypted twice. B) Can't tell without knowing the keys C) No answer text provided. D) 'hello world'
Understand the Problem
The question is examining the result of encrypting a message 'hello world' with two different symmetric keys. The options provided relate to the interpretation of the encrypted message after applying both keys.
Answer
Can't tell without knowing the keys.
Can't tell without knowing the keys.
Answer for screen readers
Can't tell without knowing the keys.
More Information
In symmetric key encryption, without knowing the values of the respective keys KA and KB, one cannot determine the result of the double encryption KB(KA(m)) or its equivalence to any of the given options.
Tips
A common mistake is assuming that the encryption process will cancel itself out and reveal the plaintext. In symmetric encryption, knowing the keys or the method is crucial for any kind of interpretation.
Sources
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