Re: Using device UUSBs with cryptsetup to open already encrypted USB sticks
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Ken Heard wrote:
> The command syntax for opening such a device is
>
> sudo cryptsetup luksOpen <device> <name>
>
> As I understand the syntax, the device designation can be /dev/sd??
> where the first question mark is the third letter of the device selected
> by the OS, and the second question mark is the partition number. Since
> device designation in this way is not constant I would like to use the
> UUID of the device instead of having to check beforehand which sd
> desognation the OS chose when each such stick is attached to the computer.
>
> Running sudo blkid -L I found the UUIDs for each stick which are quite
> long, e.g., UUID="65e7697c-d5fa-4e16-84e9-c45d2f81dd69". I assume I can
> somehow use such a UUID to indicate the device instead /dev/sd??, but I
> cannot figure out how. The cryptsetup man page does not say how, nor
> could I find out how by googling.
>
> If I knew how I could create individual script files to open and close
> each stick. I would be using the bash shell for such scripts. (The
> script would also include the mount/unmount command by using the
> ????-???? UUID assigned to each stick after access to it is opened.)
>
> I would consequently appreciate it if someone could tell me how.
After three hours of searching I finally found the answer to my own
question:
sudo cryptsetup luksOpen
/dev/disk/by-uuid/65e7697c-d5fa-4e16-84e9-c45d2f81dd69 fdc
(All on one line with a space between the luksOpen and the /dev/ ...)
Regards, Ken
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