News for hackers. Stuff that matters.

A comment on A public TrueCrypt Audit. Parent comment

Re:A public TrueCrypt Audit by jcdavis on Wednesday October 09, 2013 @03:30PM (#6523286)
The delta changes on a modified truecrypt volume is basically the whole file. Still acceptable for smaller volumes generally though
[ Parent | on HN ]
Re:A public TrueCrypt Audit by nknighthb on Wednesday October 09, 2013 @03:37PM (#6523331)
No, it's not. Disk encryption products like TrueCrypt do not have the properties you expect from ordinary file encryption. Only a subset of blocks are modified. It's a tradeoff, but it's the only way to make disk encryption practical.

http://en.wikipedia.org/wiki/Disk_encryption_theory

[ Parent | on HN ]
Re:A public TrueCrypt Audit by acqq on Wednesday October 09, 2013 @03:33PM (#6523305)
It can't be? When the container is 10 gigs and I change one file there aren't 10 gigs writes. It would last "forever."
[ Parent | on HN ]