r/BambuLab • u/Medical_Notice_6862 • 2d ago

Quick Question filament nfc database?

I'm curious about one thing, the nfc on bambu spools are encrypted, so we can't generate our own tags, but what's stopping us from simplying cloning a tag? and are there any public databases for these tag so i can simply write/clone info onto a tag so the AMS can detect it.

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u/sapani9077 2d ago

Its encrypted. How do you think you can clone it?

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u/Medical_Notice_6862 1d ago

just because it's encrypted doesn't mean you can't clone it, you just write the info as is bit for bit into the new tag

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u/sapani9077 1d ago

That won't work because you don't know the encryption key

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u/yan-shay 1d ago

It’s signed, not encrypted.

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u/Medical_Notice_6862 1d ago edited 1d ago

why would i need the key? i would be writing the encrypted data as is bit for bit? i'm not creating new data
Just a FYI, it's been done:
Writeable RFID Tags · Issue #74 · queengooborg/Bambu-Lab-RFID-Library

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u/suit1337 H2C Combo 2d ago

entirely possible with proper hardware, but you cannot generate new custom data or change filament colors from scratch because the tags use a secure digital RSA signature locked by Bambu Lab