shaymcrasherson
shaymcrasherson on Hacker News
Re:SHA-1 collider: Make your own colliding PDFs
on Friday February 24, 2017 @04:53PM (#13728272)
Is it really that hard to take a screenshot of a couple windows on your desktop and run:
$ convert screenshot.png -resize '500x500!' bar.jpg
or
$ sips -s format jpeg -Z 500x500 screenshot.png --out bar.jpg
Generating some workable source images is trivial. You're not interested in making a 'perfect hack pdf' for some nefarious purpose, just seeing if the service does what it says it does.