3 ms·
I entered an underhanded contest one year where the challenge was recoverable-but-correct-looking redaction of jpegs. I used an insecure random seed based on th
by wcummings 12y ago
I entered an underhanded contest one year where the challenge was recoverable-but-correct-looking redaction of jpegs. I used an insecure random seed based on the time (you could brute force an unredacted image based on the rough time it was generated). The winning solutions were more clever
- dalke 12y agoYou (and I) were among the many which implemented that exact technique for http://underhanded.xcott.com/?page_id=17 http://underhanded.xcott.com/?page_id=17 . :)