the ebuild does not contain the util-linux patch for aes encryption. Reproducible: Always Steps to Reproduce: type 'losetup' before and after patching util-linux with the loop-aes patch to see the difference. Actual Results: missing support of aes encryption Expected Results: included support of aes encryption
Created attachment 22909 [details, diff] util-linux patch from the loop-aes tarball works with this patch you can get it on sourceforge.net; project loop-aes.
Check this bug number ... It has the new way to use losetup ... the usage has changed. http://bugs.gentoo.org/show_bug.cgi?id=25192 *** This bug has been marked as a duplicate of 25192 ***