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dm-crypt: added manual usb key decryption

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tiyn 2022-07-14 15:10:19 +02:00
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wiki/linux/dm-crypt.md
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@ -93,3 +93,14 @@ Finally run:
Reboot the system with `reboot`.
Make sure the USB key for decryption is plugged in.
If so the encrypted partition should be decrypted automatically.
## Unlock an encrypted device with the USB key created in the previous section
With the following command an encrypted device can be decrypted with the usb
stick created in the previous section.
Make sure to edit `--key-file`, `--keyfile-offset` and `--keyfile-size` to
match the settings used in the creation of the USB key.
```sh
cryptsetup luksOpen /dev/sda2 crypt-volume --key-file=/dev/usbkey --keyfile-offset=14848 --keyfile-size=2048
```