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Double Encryption, does it do anything.


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#1 superking75

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Posted 26 December 2015 - 05:59 PM

I have been looking to backup my computers latley, but that is for another place. In my reaserch I have found a chines backup company that offera a lot of free space. The thing is I don't know how much i trust it. tencent weiyun to be specific.But back on topic if i were to encrypt the data once with 7-zip or AxCrypt, then with VeraCrypt, Both with 20-25 long strong password that I have writen down in a few places. How effective would this be. Or would it just be a waste of my time.

 

 

 



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#2 Guest_GNULINUX_*

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Posted 26 December 2015 - 06:28 PM

Trust in the Cloud?


There is no cloud. It's just someone else's computer!

It is sufficient to encrypt your data once if you do it right. AES-256 and up are completely safe.

Use ultra-long passwords/keyphrases. Double encryption is a waste of time...

 

7-Zip and AxCrypt (uses 7-Zip plus a key-file) are good examples.

May I suggest CryptSync (also uses 7-Zip) for making encrypted (Cloud) backups?

 

Greets!



#3 superking75

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Posted 27 December 2015 - 07:50 AM

Thanks, I just have a few questions. If i were to take the files off somewhere would i just need 7zip to decrypt them.

second just to make sure this will be encrypted in aes256 right.



#4 Guest_GNULINUX_*

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Posted 27 December 2015 - 06:41 PM

If i were to take the files off somewhere would i just need 7zip to decrypt them.

Indeed, unless you used a keyfile (AxCrypt), if you didn't use one, 7-Zip will be fine.

The extension of the encrypted files doesn't mather, just open with-other program-choose 7-Zip.
 

second just to make sure this will be encrypted in aes256 right.

Yes, all mentioned programs (AxCrypt, CryptSync and 7-Zip) encrypt via AES-256  :thumbsup2:

 

Greets!



#5 Hydroque

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Posted 01 March 2016 - 09:40 PM

I made an AES encrypter and decrypted using Java. It would be more beneficial to encrypt once, then add a character so that iterating over it provides an error to people trying to decrypt it.

#6 freepizza

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Posted 14 June 2016 - 09:53 PM

It would corrupt the file I guess

#7 KingDavidlll

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Posted 15 June 2016 - 03:56 AM

Yeah, the only thing encryption 2ce does is to stop (some) brute forcing.  There are some certain encryption methods where running it multiple helps, but stick to AES and you'll be fine.






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