4 ms·
Unless you're using a smart card or secure element, then your CPU is wide open to FI attacks. You can mitigate some types of FI attacks using software modificat
by als0 4y ago
Unless you're using a smart card or secure element, then your CPU is wide open to FI attacks. You can mitigate some types of FI attacks using software modifications, but doing so at the source level makes the codebase horrendous. Hardware solutions are not straightforward either. Once you add the cost of these solutions and add extensive security testing, you have to expect a substantial product price increase. If FI attacks continue to get cheaper, manufacturers will have no choice.
- Rygian 4y agoThis article specifically targets an AMD-SP (Secure Processor); would you consider that a "secure element"? Also, from the article: "The AMD Ryzen 5 2600 is equipped with a glued, indium-soldered nickel-plated copper heat spreader. This heat spreader shields the EM pulses and has to be disassembled, which is called delidding or decapsulation, and consists of three steps: First, the glue at the heat spreader’s border must be cut. Second, the processor and heat spreader have to be heated up to a temperature of 200°C." If a regular CPU already contains an effective EM shield, is it fair to say it's "wide open to FI attacks"? (Or at least EMFI as discussed in this article.?)
- als0 4y ago> is it fair to say it's "wide open to FI attacks"? By FI I was referring to the broad spectrum of FI, including clock glitching, voltage perturbation, in addition to UV and EMFI.