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semi-invasive [2015/04/16 17:46] – mcmaster-guest | semi-invasive [2018/02/25 09:15] – mcmaster | ||
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+ | ====== Photonic (UV) EPROM erase ====== | ||
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+ | EPROM/ | ||
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+ | ===== Angle ===== | ||
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+ | Some chips with shielding against this type of attack can be bypassed by shining light at a sharp angle | ||
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+ | ===== Mask ===== | ||
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+ | Use nail polish or similar compound. Most materials will block UV, so just about anything will work. Nail polish tends to be easy to work with including application and (acetone) removal. | ||
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+ | Use a fine point pipette for simple chips. | ||
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+ | For finer masks, place the chip in a large bowl with a shallow layer of acetone at the bottom. This creates an acetone " | ||
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Many systems have expectations that a piece of hardware will complete an operation in so long. For example, hardware may assume that an ADC will always complete within 100 ms. If evens are generated at 200 ms this normally might not be a problem. | Many systems have expectations that a piece of hardware will complete an operation in so long. For example, hardware may assume that an ADC will always complete within 100 ms. If evens are generated at 200 ms this normally might not be a problem. | ||
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- | ====== References ====== | ||
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- | * http:// | ||
- | * http:// | ||
- | * Laser fault injection | ||