Re: How to recognize a LUKS container

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Damn, eventually I forgot to mention

cryptsetup isLuks yourDevice

  Ralf

On 09/22/2015 10:03 PM, Ralf Ramsauer wrote:
Hello,

there are few options how to detect a LUKS container:

- use 'cryptsetup luksDump' on your device. It will fail, if it's not a LUKS container.
- If you have a dump, you can also use the 'file' command

Or the sophisticated one :-)
- Look at the first few bytes of your partition/dump and check, if it contains the magic header "LUKS"
  'sudo head -c 128 /dev/yourdevice | hexdump -C'
It should look like
00000000  4c 55 4b 53 ba be 00 01  61 65 73 00 00 00 00 00  |LUKS....aes.....|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  78 74 73 2d 70 6c 61 69  |........xts-plai|
00000030  6e 36 34 00 00 00 00 00  00 00 00 00 00 00 00 00  |n64.............|
...

Cheers
  Ralf

On 09/22/2015 08:52 PM, H McCurdy wrote:
Hi,

I've read the FAQ (but can't guarantee I didn't miss something).  In the warnings sections about the Ubuntu installer I read "... (it is very easy to recognize a LUKS container)..."

I don't actually need to know, but I'd like to know how this is done.  I didn't find the answer in the FAQ, didn't find it using Google and didn't find it on Stack Overflow.



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