<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Apr 21, 2016, at 2:19 PM, Peter Fairbrother <<a href="mailto:peter@m-o-o-t.org" class="">peter@m-o-o-t.org</a>> wrote:</div><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">hmmm, how many files on t'internet are 2798954788 bytes long?</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""></div></blockquote></div><br class=""><div class="">None. </div><div class=""><br class=""></div><div class="">They are padded to either 512 or 4k. Certainly the trim would be to those boundaries. </div><div class=""><br class=""></div><div class="">Regarding trim in general, </div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><a href="https://en.wikipedia.org/wiki/Smith_&_Dale" class="">SMITH: Doctor, it hurts when I do this.</a></div><div class=""><a href="https://en.wikipedia.org/wiki/Smith_&_Dale" class="">DALE: Don't do that.</a></div></blockquote><div class=""><br class=""></div><div class="">If someone has access to your encrypted disk and images your encrypted drive, then you use the device again, and they image your drive again and compare, they will have FAR more information that what trim gives. </div><div class=""><br class=""></div><div class="">Disable trim if you can, but even then, it is still is not a <a href="http://www.formation.jussieu.fr/ars/2000-2001/UNIX/cours/5/COMPLEMENTS/DOC/why-cryptosystems-fail/sfs3.pdf" class="">deniable file system</a> by any means (I like “3. An Alternative Construction").</div></body></html>