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How to encrypt / password protect big Linux file?

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Special Forums Cybersecurity How to encrypt / password protect big Linux file?
# 1  
Old 01-09-2014
It would be better to encrypt them right when they're made, and decrypt them 'on the fly' when you use them, than to encrypt and decrypt them in a giant file operation.

Code:
$ tar -zcf - folder | openssl enc -aes-256-cbc -salt -out file.tar.gz.aes

enter aes-256-cbc encryption password:
Verifying - enter aes-256-cbc encryption password:

$ openssl enc -d -aes-256-cbc -in file.tar.gz.aes | tar -ztf -

folder/file1
folder/file2
...

$

You will still need to convert files that already exist of course:

Code:
openssl enc -aes-256-cbc -salt -in file.tar.gz -out file.tar.gz.aes

If 'aes-256' isn't fast enough for you, try 'blowfish'.
These 2 Users Gave Thanks to Corona688 For This Post:
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