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semisol
52b4a076bcbbbdc3a1aefa3735816cf74993b1b8db202b01c883c58be7fad8bd
👨‍💻 software developer 🔒 secure element firmware dev 📨 nostr.land relay all opinions are my own.

The side channel attack countermeasures only apply to hardware accelerated encryption. The Bitkey does not use these blocks

The used cryptography libraries lack DFA, DPA or other SCA and fault countermeasures

Certain product types of the MCU the Bitkey uses have reduced fault countermeasures

It also does not appear that there is any sort of countermeasures against LFI, or probing attacks, allowing extraction of keys in memory

it is economically infeasible to:

- Make an IC design that uses only open IP blocks

- Find a good process node with an open PDK

- Do reproducible synthesis, placement, routing and other steps of the ASIC flow

- Verify with extremely high confidence that ICs received are the same as the sent mask

The problem: navigation tools keep recommending garbage

And the ones in the Coldcard/Passport are known to be weak

The Jade security model is broken if Blockstream servers are hacked and someone gets physical access to your device

nostr:atnevent1qqsxh0s82qh5xykyska44l2un0ykl65nmf2cwymd94880h8xv3jnf8qpzpmhxue69uhkummnw3ezumrpdejqzrthwden5te0dehhxtnvdakqz9thwden5te0dp5hxapwdehhxarj9ekxzmnyqyv8wumn8ghj7un9d3shjtnwdaehw6r9wfjjucm0d5vv2k6q

if you care about security and want an HWW without all the bullshit, reply/zap and I will add you to a waitlist 👀

(or as a developer, if you want security-hardened processors or SEs, DM me) nostr:note1gxspmttnwxy7vdd5vm2exzd34dxcpdqjfyazz5ryghdjs4jmd4fs8eypxm

Only Jade

NVK’s Satslink device which they never actually released, even though they had preorders planned to use this

Backdoor found in ESP32 chips that allow arbitrary memory access and more remotely via Bluetooth

https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/

you can’t choose how much free money you get, sorry nostr:note1g5l2grvrmj3nrwectvx8r46xuafe0hmapmjgcykp3pajl0suzqtqvs9pnj

They are not included in the send as your zap amount is just the received amount

So you are guaranteed to have losses

I am not going to try to explain economics but if one person has sent more sats than they received, at least one person has received more than they sent