<p>The researcher Jochen Hoenicke has done some <a href="https://jochen-hoenicke.de/trezor-power-analysis/" rel="nofollow">work on the Trezor</a>. He was able to extract the private key by monitoring the power cable with an oscilloscope.</p>

<p>Trezor has since updated the firmware to defeat the described attack.</p>

CC BY-SA 3.0
2016-06-13T15:34:16.950Z
2016-06-13T15:34:16.950Z
Murch
<p>Most of the popular hardware wallets appear to be based on well established open source cryptography. </p>

<p>Which hardware wallets have been submitted to extensive teardowns and side channel attack testing?</p>

CC BY-SA 3.0
2016-11-10T20:11:00.283Z
Digitalbitbox (https://digitalbitbox.com) uses libsecp256k1 which states to be side-channel resistant. I think the side-channel resistance of libsecp256k1 has been confirmed by some researchers: https://eprint.iacr.org/2016/230.pdf
Jonas Schnelli
<wallet-security><hardware-wallet>
Hardware wallet teardowns and side channel attacks
user22576
# Hardware wallet teardowns and side channel attacks

(Asked by: username_0 on 2016-05-22)

Most of the popular hardware wallets appear to be based on well established open source cryptography.

Which hardware wallets have been submitted to extensive teardowns and side channel attack testing?

**Tags:** wallet-security, hardware-wallet

> **Comments:**
> **username_1**: Digitalbitbox (https://digitalbitbox.com) uses libsecp256k1 which states to be side-channel resistant. I think the side-channel resistance of libsecp256k1 has been confirmed by some researchers: https://eprint.iacr.org/2016/230.pdf  

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## 1 answers

### Answer by username_2 on 2016-06-13. Score: 4 | Accepted answer

The researcher Jochen Hoenicke has done some [work on the Trezor](https://jochen-hoenicke.de/trezor-power-analysis/). He was able to extract the private key by monitoring the power cable with an oscilloscope.

Trezor has since updated the firmware to defeat the described attack.


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