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Check and unlock full disk encrypted systems via ssh

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FDEunlock – Check and unlock full disk encrypted systems via ssh

This script allows you to unlock full disk encrypted GNU/Linux systems via ssh after checking that the system has not been tampered with.

Usage example

Checkout the following example:

fdeunlock --host
INFO, 2017-03-29 10:27:41,822: Host offline. Attempting to start using: virsh -c qemu:///system start fde-server
Domain fde-server started

INFO, 2017-03-29 10:27:42,726: Start command returned with: 0
INFO, 2017-03-29 10:27:48,257: Host offline. Waiting …
INFO, 2017-03-29 10:27:53,264: Ping result: : [0], 84 bytes, 0.51 ms (0.51 avg, 0% loss)
INFO, 2017-03-29 10:27:53,270: Running Network based checkers: LinkLayerAddressChecker, UnauthenticatedLatencyChecker
INFO, 2017-03-29 10:27:53,273: Link layer address matches the trusted once.
INFO, 2017-03-29 10:27:53,283: ICMP ping round trip time: 0.7300 ms
INFO, 2017-03-29 10:27:53,283: Latency is within the boundaries.
INFO, 2017-03-29 10:27:54,296: SSH session to initramfs established.
INFO, 2017-03-29 10:27:54,296: Running SSH based checkers: ChecksumChecker, AuthenticatedLatencyChecker
INFO, 2017-03-29 10:27:57,487: Checksums match the trusted once.
INFO, 2017-03-29 10:27:57,559: Latency to execute a command over SSH and get the response back: 71.6000 ms
INFO, 2017-03-29 10:27:57,560: Trusted latency: 60.256694030762
INFO, 2017-03-29 10:27:57,560: Current latency: 71.61283493041992
Choose one of 'save', 'ignore' (for current run) or anything else to exit: save
INFO, 2017-03-29 10:28:02,739: All 4 checks passed.
INFO, 2017-03-29 10:28:02,820: Passing key for vda3_crypt to host
INFO, 2017-03-29 10:28:05,140: Could not retrieve key for vdb3_crypt (host
Please enter key for vdb3_crypt (or store it in a vault):
INFO, 2017-03-29 10:28:28,155: Passing key for vdb3_crypt to host
INFO, 2017-03-29 10:28:43,322: System should be booting now.

The host was defined in the ssh configuration ~/.ssh/config and the key for vda3_crypt was provided in /home/user/.config/fdeunlock/keys/ And last but not least, the start command was configured in /home/user/.config/fdeunlock/config.cfg.





GNU Affero General Public License v3 (AGPL-3.0)

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