r/ethereum • u/Boust16 • 1d ago

I stopped trusting hardware wallets, so I decided to build my own.

After recent security concerns around hardware wallets, I realized I didn't want to blindly trust a device I couldn't fully inspect.

So I decided to take toluTag, an open-source passive NFC tag I developed that can generate and store cryptographic keys inside a secure element, and turn it into a DIY crypto cold wallet.

The idea is simple: build your own hardware, understand what's inside, and control your own keys.

I've made the project open source on GitHub so anyone can explore it, build their own, and hopefully improve it.

Build your own bank. šŸ”

GitHub: https://github.com/mwbpNFTechnology/toluWallet

I'd love to hear your thoughts, especially from people interested in hardware wallets, cryptography, and open-source security.

12 Upvotes

69% Upvoted

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u/WorkerProfessional67 1d ago

this is the kind of stuff that makes me happy to see. too many people put blind faith in a black box and then get surprised when something goes wrong

the nfc angle is interesting, most diy wallets i seen use usb or qr codes. does the secure element chip you used have any known vulnerabilities or did you pick one that is well tested?

also respect for making it fully open source. way too many projects say they are open but then the secure element firmware is closed and you just have to trust them anyway

1

u/Boust16 1d ago

Thanks man!
I use se051c by nxp

1

u/BramBramEth I bruteforce stuff šŸ”’ 10h ago

Now that is something Iā€™m bookmarking for future read