cryptsetup: Add tcrypt support

System Internals / systemd - Jan Janssen [web.de] - 15 July 2013 18:24 UTC

Tcrypt uses a different approach to passphrases/key files. The passphrase and all key files are incorporated into the "password" to open the volume. So, the idea of slots that provide a way to open the volume with different passphrases/key files that are independent from each other like with LUKS does not apply.

Therefore, we use the key file from /etc/crypttab as the source for the passphrase. The actual key files that are combined with the passphrase into a password are provided as a new option in /etc/crypttab and can be given multiple times if more than one key file is used by a volume.

8cf3ca8 cryptsetup: Add tcrypt support
configure.ac | 2 +-
man/crypttab.xml | 300 ++++++++++++++++++++++++++-----------------
src/cryptsetup/cryptsetup.c | 79 +++++++++++-
3 files changed, 258 insertions(+), 123 deletions(-)

Upstream: github.com

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