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  1. #1

    How to encrypt / password protect big linux file?


    i have around 20 backup files tar.gz with sensitive data. The sizes of these files are from around 200MB to around 20GB

    I want to secure these files so no one can read, use its contents. only me

    the method of encrypting, password protecting them should be fast, so for example in case of 20GB file, it wont take more than like 10 minutes of server work to "encrypt it"

    it should be able to "encrypt/decrypt" them from linux command line.

    Please do you have any ideas on how to do it?

  2. #2
    Linux Guru
    Join Date
    Dec 2013
    Victoria, B.C. Canada
    gpg is a standard cl tool that will do it.

    "man gpg" should cover it.

  3. #3
    Linux Engineer docbop's Avatar
    Join Date
    Nov 2009
    Woodshed, CA
    We used to gzip our large database files to reduce the size, then use openssl to encrypt them before moving them to offsite backup.

  4. $spacer_open
  5. #4
    Thx, i tested openssl, there are examples on the internet. use SE to find. I wont use gpg because to bother generate key, unless GPG is much faster than openssl, which i dont know. Another found options: truecrypt (did not worked on my openvz vps), ccrypt
    Last edited by postcd; 01-10-2014 at 11:32 AM.

  6. #5
    Linux Enthusiast sgosnell's Avatar
    Join Date
    Oct 2010
    Baja Oklahoma
    You don't need to generate a key every time you encrypt a file with gpg. If you're doing that, you're doing it wrong.

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