4 ms·

> imagine a browser that encrypts local storage with a system key. If I understand correctly, by storing different patterns of bits, Hertzbleed might be able to

> imagine a browser that encrypts local storage with a system key. If I understand correctly, by storing different patterns of bits, Hertzbleed might be able to extract the system key from the timings to save data. Don't you need precise clocks for this in JS? The ones that were disabled in browsers after Meltdown/Spectre.

mintplant 4y ago
A lot of that has since been rolled back as different mitigations have been deployed against Spectre.
- slimsag 4y ago
  Source? The MDN is very clear about precise timing not being available due to Spectre mitigations.