How to determine what encryption is being used a LUKS partition?

partition encryption luks cryptsetup

595

Solution 1

If the decrypted volume is /dev/mapper/crypto then you can get the information with

dmsetup table crypto
0 104853504 crypt aes-cbc-essiv:sha256 000[...]000 0 254:2 4096

If the encrypted volume is /dev/storage2/crypto then you get the information with

cryptsetup luksDump /dev/storage2/crypto
LUKS header information for /dev/storage2/crypto

Version:        1
Cipher name:    aes
Cipher mode:    cbc-essiv:sha256
Hash spec:      sha256
[...]

Solution 2

List the disks:

lsblk --fs

Then (used encryption):

cryptsetup luksDump /dev/sdb1

Or (used encryption):

cryptsetup status crypt_sdb1

In addition (kernel supported encryption and bench):

cat /proc/crypto
ls /lib/modules/$(uname -r)/kernel/crypto/

#cryptsetup benchmark --cipher aes-xts --key-size 256 
cryptsetup benchmark

595

learning

Updated on September 18, 2022

Comments

learning over 1 year
The parsedate function is not working in the following: fiddle here

I am using jquery 1.10.2

What is wrong with the following?
```
<script>
    $(document).ready(function() {
        var date = new Date();
        $('#date1').text($.datepicker.parseDate('ymmdd', date));
    });
</script> 
<html>
    <body>
        First date: <span id="date1"></span>
    </body>
</html>
```
- Dhaval Marthak over 9 years
  
  First include jQuery UI library to your fiddle and see this may help you!
- learning over 9 years
  
  @Dhaval it does not help
learning over 9 years

I am having the error throw "Missing number at position " + iValue;
learning over 9 years

thank you , what I need to do is to compare dates... I can`t use this to compare 100 dates.. Why is dateparse not working
Kenny over 9 years

you cant use parseDate like this rather you can use parseDate like $.datepicker.parseDate('yyMMdd', '2014september06');
akhan over 5 years

Why two different tools for the same task: dmsetup is a lower level tool then cryptsetup.
Hauke Laging over 5 years

@akhan That's just what I am used to. But cryptsetup status crypto can be used, too.
goulashsoup about 2 years

As far as i understand, when using cryptsetup status <partition>, the <partition>s that give info can be identified by the type crypt when using lsblk (without options).