When I see a question like this, I always type in obvious words like &quot;carry propagation bug&quot; into Google just to see if it&#x27;s a lazy question or there&#x27;s a failure by INFOSEC authors on a topic. I was shocked that all I got was garbage about all kinds of CVE&#x27;s and such with no clear explanation of the problem. Not clear in terms of someone searching for an article rather than bug report. Only one I saw in a few pages of Google was:<p><a href="http:&#x2F;&#x2F;blog.skylable.com&#x2F;2014&#x2F;05&#x2F;tweetnacl-carrybit-bug&#x2F;" rel="nofollow">http:&#x2F;&#x2F;blog.skylable.com&#x2F;2014&#x2F;05&#x2F;tweetnacl-carrybit-bug&#x2F;</a><p>StackOverflow had nothing useful with that phrase. Weird. I tried Modular and Montgomery Multiplication as they&#x27;re important key words that should give you an idea about potential carry issues. I found these decent descriptions in my short Googling:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Kochanski_multiplication" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Kochanski_multiplication</a><p><a href="http:&#x2F;&#x2F;www.hackersdelight.org&#x2F;MontgomeryMultiplication.pdf" rel="nofollow">http:&#x2F;&#x2F;www.hackersdelight.org&#x2F;MontgomeryMultiplication.pdf</a><p>Best I can do with little time and the flood of irrelevant results I saw. Maybe need a thorough write-up on these sorts of things that shows up in Google. At least I serendipitously found a great paper on statically detecting flaws in error propagation:<p><a href="http:&#x2F;&#x2F;pages.cs.wisc.edu&#x2F;~liblit&#x2F;dissertations&#x2F;crubio.pdf" rel="nofollow">http:&#x2F;&#x2F;pages.cs.wisc.edu&#x2F;~liblit&#x2F;dissertations&#x2F;crubio.pdf</a><p>So, thanks for asking even if not an intended benefit. :)