Official The Last Dance Discussion

Official discussion thread for The Last Dance. Please do not post any spoilers or big hints.

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I’ve completed the challenge and I’ll give you some tips,
The hard thing in this challenge is that the encryption in not well documented but in this challenge you can break the flag pretending that it has been x**

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Nice challenge, you need some Google and reading the documentation
If you are stuck do not hesitate to DM

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This was really fun - and only ‘very easy’ if the player already has a decent understanding of how stream ciphers work at a fundamental level. It took me some brushing up to get there.