Lancern's Treasure Chest
21:06 · Mar 17, 2025 · Mon
Recommendations for designing magic numbers of binary file formats
https://hackers.town/@zwol/114155595855705796
hackers.town
Zack Weinberg (@zwol@hackers.town)
another day, another binary file format with a badly designed magic number
not gonna call it out specifically but here are some RFC2119 MUSTs for magic number design:
MUST be the very first N bytes in the file
MUST be at least four bytes long, eight is…
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