01-09-2014
How to encrypt / password protect big Linux file?
Hello,
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?
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LEARN ABOUT LINUX
gpg-zip
GPG-ZIP(1) General Commands Manual GPG-ZIP(1)
NAME
gpg-zip - encrypt or sign files into an archive
SYNOPSIS
gpg-zip [OPTIONS] filename1 [filename2, ...] directory1 [directory2, ...]
DESCRIPTION
This manual page documents briefly the gpg-zip command.
gpg-zip encrypts or signs files into an archive. It is an gpg-ized tar using the same format as PGP's PGP Zip.
OPTIONS
-e, --encrypt
Encrypt data. This option may be combined with --symmetric (for output that may be decrypted via a secret key or a passphrase).
-d, --decrypt
Decrypt data.
-c, --symmetric
Encrypt with a symmetric cipher using a passphrase. The default symmetric cipher used is CAST5, but may be chosen with the
--cipher-algo option to gpg(1).
-s, --sign
Make a signature. See gpg(1).
-r, --recipient USER
Encrypt for user id USER. See gpg(1).
-u, --local-user USER
Use USER as the key to sign with. See gpg(1).
--list-archive
List the contents of the specified archive.
-o, --output FILE"
Write output to specified file FILE.
--gpg GPG
Use the specified command instead of gpg.
--gpg-args ARGS
Pass the specified options to gpg(1).
--tar TAR
Use the specified command instead of tar.
--tar-args ARGS
Pass the specified options to tar(1).
-h, --help
Output a short usage information.
--version
Output the program version.
DIAGNOSTICS
The program returns 0 if everything was fine, 1 otherwise.
EXAMPLES
Encrypt the contents of directory mydocs for user Bob to file test1:
gpg-zip --encrypt --output test1 --gpg-args -r Bob"" mydocs
List the contents of archive test1:
gpg-zip --list-archive test1
SEE ALSO
gpg(1), tar(1)
AUTHOR
Copyright (C) 2005 Free Software Foundation, Inc. Please report bugs to <bug-gnupg@gnu.org>.
This manpage was written by Colin Tuckley <colin@tuckley.org> and Daniel Leidert <daniel.leidert@wgdd.de> for the Debian distribution (but
may be used by others).
November 2006 GPG-ZIP(1)