time skip

One of our problem writers got sent back in time! We found a piece a very very old piece of parchment where he disappeared, alongside a long cylinder. See if you can uncover his flag!

parchment.txt

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Just put it in dcode.fr’s cipher identifier –> Scytale cipher

Make sure to check “Keep punctuation and spaces”, and then just click brute force!

bcactf{5c7t4l3_h15t04y_qe829xl1}