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What is an "un-encrypted pass through device"?
I'm reading chapter 10. I got to Knowledge Check 10.1. This requires ordering the steps for setting up an encrypted partition.
All of the steps in this question are mentioned in the earlier text, except for "Create the un-encrypted pass through device". I've read the section over again, and I don't see anything like this mentioned.
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http://homepage.smc.edu/morgan_david/linwin/freeotfe.htm
so that means using fdisk on something to create a partition, or if it is lvm, lvcreate, or if it is a loopback file, losetup.
1. Create a partition for the encrypted block device
2. Format with cryptsetup
3. Create the un-encrypted pass through device
4. Format with a standard filesystem such as ext4
5. Mount the filesystem on the encrypted block device
After step 1, the partition is already created. So, I'm guessing that if this "un-encrypted pass through device" is a real thing, it's not created by creating the partition.
Note that lab 10.1 mentions this also.
The following step:
"Create the un-encrypted pass through device"
Refers to the luksOpen command, as in here:
$ sudo cryptsetup luksOpen /dev/sda4 secret-disk
Regards,
Luis.
I haven't heard that expression before, but I think that a "pass through device" refers to a kind of converter mechanism. So in this case the luksopen command creates a mapping through a device, so it becomes "un-encrypted".
Regards,
Luis.