3 ms·

How do you read a timer from within the JPEG XL bitstream? I believe the decoding process is deterministic.

• slver 5y ago
  It's a challenge, but I'd probably look into any decoders that parallelize the decoding and see if I can abuse this.
  • tsegratis 5y ago
    Just wait, its only a short while til JPEG contains the pdf spec and a javascript interpreter
  • wizzwizz4 5y ago
    You'd need to exploit an implementation bug, or have the user be streaming or something (so some squares appear before others as the output of your timing attack).