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by WaywardGeek
4258 days ago
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The channel hoping is just a bit of software. It costs $0.00 in additional hardware. Software complexity is a big deal in a TRNG. The KISS rule applies big-time here. The more complex the software, the more likely it is a significant flaw will be found and exploited. It remains unclear to me whether there should even be a microcontroller on a USB TRNG. Without one, we can eliminate the complexity from the USB key itself, but we have to move the whitening and health monitoring to the driver. It is unclear to me if making the driver more complex opens it up to enough additional attacks that the system is less secure overall. |
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