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EmpireCTF / empirectf

EmpireCTF – write-ups, capture the flag, cybersecurity
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Google CTF Perfect Secrecy #2

Closed Crypt-iQ closed 6 years ago

Crypt-iQ commented 6 years ago

Hi your solution to this was very smart, I enjoyed reading it.

There's a typo in the inequalities when you multiply the flag by 4. On the right hand side of the inequalities, it should be 2n instead of 2x, and 3n instead of 3x. Technically <= is not possible for any of the inequalities but that doesn't really matter.

Aurel300 commented 6 years ago

@Crypt-iQ Thanks, I'm glad you enjoyed it!

And good catch. As for ≤, I formulated it that way mostly to show exhaustiveness of the 4 cases.