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Question: could an x-ray device be made sensitive/high resolution enough to "read" whether a bit is flipped in silicon? (and extract the private key)
by deegles 11y ago
Question: could an x-ray device be made sensitive/high resolution enough to "read" whether a bit is flipped in silicon? (and extract the private key)
- tonyarkles 11y agoIt's a tricky thing, and I fully admit that I have a limited understanding of the specific effects of x-rays on semiconductor devices. My understanding though is that you get higher resolution with higher-energy x-rays, and that as you increase the energy, you're more and more likely to damage the semiconductor (e.g. by inducing bit flips). Here's some material from a flash memory manufacturer with more details: https://www.spansion.com/Support/Application%20Notes/X-ray_inspection_on_flash_AN.pdf https://www.spansion.com/Support/Application%20Notes/X-ray_i...