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Full Discussion: Bash Script to decrypt encrypt log and archive
Top Forums Shell Programming and Scripting Bash Script to decrypt encrypt log and archive Post 302559287 by cdc01 on Monday 26th of September 2011 04:06:46 PM
Old 09-26-2011
Bash Script to decrypt encrypt log and archive
Hi

Please see if you have come across any aprts of this. I can read, integrate and syntehsixe. Any help you could offer me would be super. thanks in advance!


Good day.


Thank you for your response in this matter. Here are some further details:

1) scripting is to be in BASH shell programming

2) when targeting a named directory, based on filtering, we will need to:
a) identify the .pgp extension files present (there may be a timestamp before or after the .pgp)
b) archive the received file (.pgp)
c) decrypt the file using GPG (we have the priv key)
d) put the file back into the same directory and archive it as well
Log all activities, delete gpg file from directory only if successful in decrypting

3) when targeting another directory, we will need to
a) archive the file(s) pre-encryption. (based on location (file name) and then on extension
b) may or may not need to timestamp it
c) encrypt the files separately. Here: depending on the directory that the file is present it will be encrypted with a certain key
(a hierarchy of folders will be scanned)
d) may need to timestamp it here (not sure yet if timestamp is needed before or after encryption)
e) archive the encrypted files
f) be sure the new files are in the same directory as the original ones
g) delete the original files from the directory (this may be done by GPG but im not sure), but only delete if the encryption was successful
h) may need to change the rights of the new file
i) log all steps performed or failed on.


4) For each of the archivings done, every week (MON 00:01) a new tarball should be created. Not sure progamatically
what is simpler, but weekly or some like variation (ideally start new MON 00:01 AM) may be the best

As well, it is important to check that the file is not in use when going to encrypt it, or decrypt it.
Not sure what method is best to verify if the file is in use, but this should be checked as well.

thanks for your help in advance!
 

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LEARN ABOUT SUSE

gpg-zip

GPG-ZIP(1)							 GNU Privacy Guard							GPG-ZIP(1)

NAME

       gpg-zip - Encrypt or sign files into an archive

SYNOPSIS

       gpg-zip [options] filename1 [ filename2, ... ] directory1 [ directory2, ... ]

DESCRIPTION

       gpg-zip encrypts or signs files into an archive.  It is an gpg-ized tar using the same format as used by PGP's PGP Zip.

OPTIONS

       gpg-zip understands these options:

       --encrypt

       -e     Encrypt data.  This option may be combined with --symmetric (for	output that may be decrypted via a secret key or a passphrase).

       --decrypt

       -d     Decrypt data.

       --symmetric

       -c     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.

       --sign

       -s     Make a signature.  See gpg.

       --recipient user

       -r user
	      Encrypt for user id user. See gpg.

       --local-user user

       -u user
	      Use user as the key to sign with.  See gpg.

       --list-archive
	      List the contents of the specified archive.

       --output file

       -o file
	      Write output to specified file file.

       --gpg gpgcmd
	      Use the specified command gpgcmd instead of gpg.

       --gpg-args args
	      Pass the specified options to gpg.

       --tar tarcmd
	      Use the specified command tarcmd instead of tar.

       --tar-args args
	      Pass the specified options to tar.

       --version
	      Print version of the program and exit.

       --help Display a brief help page and exit.

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

DIAGNOSTICS

       The program returns 0 if everything was fine, 1 otherwise.

SEE ALSO

       gpg(1), tar(1),

       The full documentation for this tool is maintained as a Texinfo manual.	If GnuPG and the info program are properly installed at your site,
       the command

	 info gnupg

       should give you access to the complete manual including a menu structure and an index.

GnuPG 2.0.15							    2010-07-05								GPG-ZIP(1)
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