Due to various concerns, Trecrypt is about to be replaced in Tails, either by tcplay or cryptsetup.

This is the blueprint for ticket #5373 and subtasks.

Candidate alternatives

Tc-play

tc-play is a Free implementation of TrueCrypt based on dm-crypt, licensed under the 2-clause BSD license. It is in Debian sid (tcplay), and would serve as a full replacement of TrueCrypt... once a proper GUI available.

Cryptsetup

Cryptsetup 1.6 supports reading the TrueCrypt on-disk format, so if/when udisks and friends are adapted (if needed), then we could as well avoid shipping any additional software at all. It is part of Debian Jessie.

Once unlocked on the command-line, the TC volume shows up in Nautilus, but no udisks / GNOME Disks / Nautilus integration is here to enable the user to graphically activate a TC volume.

Upstream (udisks) feature request: https://bugs.freedesktop.org/show_bug.cgi?id=70164

Zulucrypt

zuluCrypt is a front end to cryptsetup and tcplay, it make easy to manage Truecrypt volumes through a GUI, but it's not packaged in Debian yet (RFP #703911).