Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
1–10 of 16 posts
Re: Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
#2I would have never come across this except on HN & it's awesome!
Re: Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
#3[deleted]
Re: Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
#4Old discussion https://news.ycombinator.com/item?id=31897530 (642 points | June 2022 | 165 comments)
Re: Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
#5there is I believ a similar thing useing paint spatters as idicators of authentisity of electronics and also as proof of tampering, as the patterns are unique and can be produced, recorded ,quickly and cheeply.
Re: Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
#6there is I believ a similar thing useing paint spatters as idicators of authentisity of electronics and also as proof of tampering, as the patterns are unique and can be produced, recorded ,quickly and cheeply.
Much like the split tally stick: https://en.wikipedia.org/wiki/Tally_stick
Re: Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
#7I would have never come across this except on HN & it's awesome!
I first learned about it via the blink comparison app on f-droid, linked in the article.
Re: Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
#8> If of one or more elements within the mosaic are modified, unauthorized access or compromise can be assumed.
... But how is the recipient certain of what the mosaic should be? You can't put the reference photo in the same package, because it's taken after sealing. And if you send it separately, that package is also subject to tampering.
Re: Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
#9Chaos Computer Club talk on this (using glitter nail polish) from way back in 2014...
https://www.youtube.com/watch?v=zpFKeVuP0_w
The talk covers A LOT more and focusing on "evil maid" attacks.
Re: Random Mosaic – Detecting unauthorized physical access with colored rice (2021)
#10The article anonymized a face using the compromised swirl method