USB armory: an open-source hardware design, flash-drive sized computer

Re:USB armory: an open-source hardware design, flash-drive s... by RL_Quine on Tuesday February 11, 2020 @09:24AM (#22298683)

I wonder if it's one of the chips that has a bootloader vulnerability. All of the trustzone stuff was completely broken on their original, and nobody ever implemented working code for it anyway.

The BOM cost is probably pretty high because of the BGA package, the original was like a 8 layer board or something absurd.

Those processors, as you pointed out, are comically slow even compared with the raspberry pi.

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Re:USB armory: an open-source hardware design, flash-drive s... by lcarsip on Wednesday February 12, 2020 @03:22AM (#22306954)

We took part of in the original HAB disclosure process for the NXP i.MX series and we carry on testing these parts.

Please see https://github.com/f-secure-foundry/advisories

Of course all P/Ns used for the Mk II have a patched boot ROM, please see https://github.com/f-secure-foundry/usbarmory/wiki/Secure-bo....

The original Mk I was 6 layers in the end, the Mk II is also 6 layers.

And yes the BOM cost is considerable due to its specifications.

The i.MX SoC core we use is comparable to a 1st gen Raspberry PI in speed, but of course slower than newer multi-core ones.

However security and form factor, rather than pure speed, is our goal. For the intent and purposes of the board performance is more than adequate.

Some benchmarks here: https://github.com/f-secure-foundry/usbarmory/wiki/Benchmark...

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Re:USB armory: an open-source hardware design, flash-drive s... by RL_Quine on Wednesday February 12, 2020 @01:53PM (#22311570)

I have deep respect for you disclosing issues in a processor you're using in your own product.

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