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Top Forums UNIX for Beginners Questions & Answers Shell Script for "Password Management" Post 303046110 by newbie_01 on Friday 24th of April 2020 03:48:11 AM
Old 04-24-2020
Hi,

Thanks for your reply.
Unfortunately, I can't use what you are suggesting. I am more or less looking for something 'simple' actually.
So there are several servers that I ssh to, I can copy the rsa keys to several hosts and then ssh with no password. So that's all well and good.
But there are also a Windows login, AWS login, database password login, my bank account login, just kidding, and several other 'clients' / customer that I support that I unfortunately cannot copy the rsa keys too.


So what am thinking is for each client, I create a text file with the login and password information and then I run the following



Code:
openssl enc -aes-256-cbc -salt -in list.txt -out list.txt.enc
openssl enc -aes-256-cbc -d -in list.txt.enc | cat

The first one is obviously an encrypt after which I delete the plain text file, and when I need to access the password information, I run the second command which is a decrypt and then copy and paste the output from the decrypt. xclip or any UNIX clip command are not available.


So it is kinda like a shell script for maintaining a text file that I encrypt and delete the text file and decrypt the encrypted file if/when I need to access the password information.


The other 'easier' option/alternative that I am hoping to have maybe is if I have the password text file as below:



Code:
mickey mouse
donald duck
bugs bunny

Then if I can encrypt and masked it like below:



Code:
mickey ******
donald ******
bugs ******

And then run an unmasked/decrypt that will toggle the ****** to show/hide the password.


At the moment, I can manage with using openssl to encrypt/decrypt. Just need some kind of menu/script to manage it maybe Smilie


I know there are other password management scripts/tools around for Linux/Unix, but unfortunately, as I am not the SysAdmin and the client possibly not approving to install such utility in the server, am left with only 'writing' my own shell script option with using one text file for each username/password Smilie Obviously, I still need to remember the one 'master' password that I used for doing the openssl -enc
 

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su(1)							      General Commands Manual							     su(1)

Name
       su - substitute a user ID

Syntax
       su [username]

       su - [username]

       su -f [username]

Description
       The  command  requests the password of the specified username.  If the correct password is given, changes to that username without changing
       the current directory.  The user environment is unchanged except for HOME and SHELL which are taken from the password file entry for  user-
       name.   The  shell  that  is  run  is also taken from the password file entry for username.  The new user ID stays in force until the shell
       exits.

       If no username is specified, `root' is assumed.	To remind the superuser of his responsibilities, the shell substitutes `#' for	its  usual
       prompt.

Options
       -f   Prevents from executing the .cshrc file, making start up faster.

       -    Simulates a full login.

Diagnostics
       Sorry
	    An invalid password was supplied for the specified username.

       Unknown login: username
	    The specified username was not found in the passwd database.

       No directory
	    The home directory for the username is not accessible at this time (only with ``-'' argument).

       No shell
	    The shell specified in the passwd database entry for username could not be executed.

       Kerberos initialization failure
	    Consult your system administrator.

       If enhanced security features are enabled the following error messages are also possible:

       Requires secure terminal
	    Attempt to su to UID 0 on a line that is not marked secure in

       User's password has expired
	    Access is denied because the password for username is expired.

       This account is disabled
	    Access is denied because the auth entry corresponding to username is marked disabled.

Files
       Log file of anyone who became
			root, with a date mark.

See Also
       csh(1), sh(1), passwd(5yp), environ(7), edauth(8)
       Security Guide for Administrators
       Security Guide for Users

																	     su(1)
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