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→Use of SAD Trigger in ChipWhisperer-Pro
Note the trigger out is very short (one ADC cycle), so a reasonably fast capture speed may be needed to ensure no edges are lost, or a pulse stretcher used on the pulse output. The 1's in the above waveform are indicated by the longer delay between successive edges, as the square-multiply operation has a longer delay than a square only.
The ChipWhisperer-Pro trigger also makes it easier to attach the real RSA implementation, as it does not required storing an extremely long analog data trace and then postprocessing it.
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