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One question of a principle of an encryption (LUKS) [answered]

asked 2020-03-23 16:13:18 +0200

N9Sailfish gravatar image

I'm very happy for an encryption option for Xperia X and XA2, too, in the following update. However this is causing me some concern, because details are not totally clear for me:

Does LUKS cause only the encryption of the data inside our smart phones? Thus an addition to a screen lock.

Or does LUKS cause encryption also in the sent messages? This should mean that the receiver of my messages should also have some encyption key also in her / his phone. Otherwise the results might be only mixed iron wire as in the recrived messages. Hope so not? This sure shall be too complicated.

I should be very grateful for some short advice on the previous.

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The question has been closed for the following reason "the question is answered, an answer was accepted" by olf
close date 2020-03-23 23:19:47.239170

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LUKS is a way on how to encrypt the data that is written to your local storage media, i.e. your internal flash and if present & configured your sd-card. This is an extra layer when your apps access the file storage devices, i.e. when you unlock your storage device (your flash) your apps access the data in the same way as if the disk / flash wasn't encrypted. So LUKS doesn't help you protecting your data when you exchange information with external parties.

jollajo ( 2020-03-23 17:02:19 +0200 )edit

jollajo_ Thank you for the clarification. :) Good to know that my messages shall have clear text formats.

N9Sailfish ( 2020-03-23 17:08:11 +0200 )edit

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answered 2020-03-23 17:12:31 +0200

luen gravatar image

updated 2020-03-23 19:08:58 +0200

LUKS is a disk encryption specification and has nothing to do with what is sent over the network. Network protocols specify their own way of encrypting data (if it's encrypted at all), and then of course both ends need to agree on the algorithms and keys, but most often that happens transparently to the user.

A good introduction to encryption can be found in EFF's Surveillance Self-Defence guide:

What Should I Know About Encryption?

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Jag tackar och bågar. It's now clearly answerred. :) No need to worry anymore.

N9Sailfish ( 2020-03-23 17:23:29 +0200 )edit
1

Looking in the language list of my device if it speaks Klingon as well... Uii this is some nordic lang ;)

cy8aer ( 2020-03-23 17:39:41 +0200 )edit

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Asked: 2020-03-23 16:13:18 +0200

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Last updated: Mar 23 '20