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| kyaputen | hi motwok | 00:36 |
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| xobs | Prototype PCBs from Hackvana for plastics measurement arrived today: https://twitter.com/tomu_im/status/962251024135110658 | 09:08 |
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| kyaputen | nice! | 12:09 |
| kyaputen | x = reset ? | 12:09 |
| kyaputen | mithro & xobs: by the way, I thought of a use of the crowdsupply campaign: you could create a small bounty program regarding security | 12:10 |
| xobs | x = reset, yeah. | 12:11 |
| kyaputen | As I believe many uses will includes secrets inside the tomu, it could be useful to have security review | 12:11 |
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| kyaputen | the main scenario of attack I see is that if I lose my tomu, I don't want the secret inside to be readable | 12:12 |
| kyaputen | but I don't know if that's realistic or not | 12:12 |
| kyaputen | (of course people will be able to use it as a black box) | 12:12 |
| xobs | It doesn't have a whole lot of security from that perspective. | 12:13 |
| kyaputen | Isn't it "lockable" though ? | 12:14 |
| xobs | It is, you can disable SWD. | 12:14 |
| xobs | And you can cause Toboot to not allow manual entry. | 12:15 |
| kyaputen | yes | 12:15 |
| kyaputen | and from that point, I could have a special toboot that only allows signed apps to run (signed by me if I patch toboot or signed by tomu's main key in general case) | 12:15 |
| kyaputen | so "theoretically" I couldn't write a flash stealing app and write it to tomu without resetting the whole flash | 12:16 |
| xobs | You could do that, but it wouldn't be Toboot anymore. Toboot runs entirely from RAM, and is already pretty close to full. | 12:16 |
| kyaputen | right | 12:16 |
| kyaputen | my bad didn't think of that point | 12:17 |
| xobs | API V2.0 will support "compulsary erase blocks" where an existing application can request certain blocks be erased when a new program is loaded. | 12:17 |
| kyaputen | and it would probably need to half the flash (in order to be able to verify one part while having the other as a backup) | 12:17 |
| kyaputen | regarding "erase blocks", I read that but the only scenario I see is that we have a secret that can be thrown away with updates | 12:19 |
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| mithro | xobs: You should get @bunniestudios to retweet your v0.4.3 tweet | 18:25 |
| mithro | xobs: Having some kind of "authenticated" bootloader would be a cool feature | 18:25 |
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| PCReaper | Hello | 22:04 |
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