160

Hackers hope to democratize laser-based processor hacking — $500 RayV Lite relies on 3D printing, a laser pen, and a Raspberry Pi to bring costs down (www.tomshardware.com)

submitted 1 month ago* (last edited 1 month ago) by A_A@lemmy.world to c/technology@lemmy.world

14 comments fedilink hide all child comments

… "The first of two versions of the RayV Lite will focus on laser fault injection (LFI). This technique uses a brief blast of light to interfere with the charges of a processor’s transistors, which could flip them from a 0 value to a 1 value or vice versa. Using LFI, Beaumont and Trowell have been able to pull off things like bypassing the security check in an automotive chip’s firmware or bypassing the PIN verification for a cryptocurrency hardware wallet.

The second version of the tool will be able to perform laser logic state imaging. This allows snooping on what’s happening inside a chip as it operates, potentially pulling out hints about the data and code it’s handling. Since this data could include sensitive secrets, LSI is another dangerous form of hacking that Beaumont and Trowell hope to raise awareness of." …

you are viewing a single comment's thread
view the rest of the comments

[-] solrize@lemmy.world 5 points 1 month ago

I don't think perfect invulnerability is possible: there are just higher and lower amounts of resistance, and of course there can be mistakes including in the protocols. The really high end stuff with tamper reactive packaging (e.g. used in banking) are usually installed in servers in secure data centers, with 24/7 CCTV coverage. So it would be very hard to mess with those things without at least being detected on the camera. The chips inside phones (Apple Secure Enclave, Google Titan) do receive a lot of attention to these issues.

Back around the 1990s there was sort of a technical arms race between set-top box manufactuers (the boxes authenticate to the networks with smart cards) vs cable TV pirates (they were willing to spend lots of money breaking cards, so they could sell illicit pirate cards to people). I think in the end, the card manufacturers "won" (made cards that the pirates couldn't beat), but I don't know if they have kept that advantage for all these years since then.

this post was submitted on 04 Aug 2024

160 points (99.4% liked)

Technology

58123 readers

4134 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS