Wireless Charging Power Side-Channel Attacks

Re:Wireless Charging Power Side-Channel Attacks by sillycross on Monday September 13, 2021 @07:33AM (#28510162)

According to the paper, the leak occurs when the battery is close to full (>95%). In that case, since the battery is almost full, the power drained from the charger reflects the concurrent power being consumed by the device.

I initially thought this is easily fixable (for example, by always request full power), but then I realized it isn't, since the extra power would then have to be dissipated as heat, which is a bad cellphone UX as well.

[ Parent | on HN ]

Re:Wireless Charging Power Side-Channel Attacks by k_sze on Monday September 13, 2021 @08:47AM (#28510804)

And then the heat might become a new source of leak, given precise enough instruments.

[ Parent | on HN ]

Re:Wireless Charging Power Side-Channel Attacks by Scoundreller on Monday September 13, 2021 @08:48AM (#28510820)

They’re already like 50% efficient with the inefficient 50% largely being the phone acting like an inductive pan and heating up, so what’s a bit more heat.

[ Parent | on HN ]