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dicectf

DiceCTF event writeups and challenges. 1 post in this archive.

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DiceCTF 2026: Carry the Flame

This challenge presents us with a 1024-round SPN (Rijndael S-box, fixed 40-bit permutation) with a 40-bit key. The key is sampled separately for each connection, so the final guess must be s...

MAR 08, 2026 · 06 MIN READ POST →