Hardware signer for Polkadot ecosystem
Kampela is a hardware implementation of Polkadot Vault
Kampela is a small card-shaped device to be carried in a wallet when needed, that accepts data through unidirectional NFC port and shows output on a monochrome electronic paper screen.
It has cryptographic strongbox with elliptic curves supported by Substrate — which only stores private keys (after initial import) and performs all signing operations on-chip.
Building on top of the features you expect from Signer, it brings additional security (and convenience) features associated with purpose-built hardware:
After initial setup your keys are never leave a cryptographic strongbox (which supports Substrate-compatible elliptic curves on-chip).
NFC connection is the only power source it needs: no wired connection needed, no internal batteries to charge.
Unidirectional, inspectable communication: NFC goes in, QR code goes out (on a high-contrast e-Ink touchscreen).
A dedicated hardware circuit detects someone messing with the chipset and wipes your keys upon the next power-on.
Translucent, inspectable plastic monobody — so you can be sure there is no extra hardware added to your device by some evil maid.
And of course it supports most Substrate-compatible chains (and their metadata updates) out of the box.
Cryptographic strongbox
No battery, NFC only
Unidirectional communication
Tamper detection circuits
Transparent
Substrate-compatible
Building on top of the features you expect from Signer, it brings additional security (and convenience) features associated with purpose-built hardware:
Cryptographic strongbox
After initial setup your keys are never leave a cryptographic strongbox (which supports Substrate-compatible elliptic curves on-chip).
No battery, NFC only
NFC connection is the only power source it needs: no wired connection needed, no internal batteries to charge.
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Unidirectional communication
Unidirectional, inspectable communication: NFC goes in, QR code goes out (on a high-contrast e-Ink touchscreen).
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Tamper detection circuits
A dedicated hardware circuit detects someone messing with the chipset and wipes your keys upon the next power-on.
Transparent
Translucent, inspectable plastic monobody — so you can be sure there is no extra hardware added to your device by some evil maid.
4
Substrate-compatible
And of course it supports most Substrate-compatible chains (and their metadata updates) out of the box
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Kampela is open-source
As a Web3 project, we keep our GitHub open-sourced so that anyone can audit our code and hardware.
Kampela source
Please check out our sources and participate in the hardware/software development:
Kampela Community
Join Kampela community:
Sign up for the waiting list
We will contact you when the Kampela signer will be available
Designed in Finland
Contact Us:
