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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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SHADOW(5)							File Formats Manual							 SHADOW(5)

NAME
shadow - encrypted password file DESCRIPTION
shadow contains the encrypted password information for user's accounts and optional the password aging information. Included is Login name Encrypted password Days since Jan 1, 1970 that password was last changed Days before password may be changed Days after which password must be changed Days before password is to expire that user is warned Days after password expires that account is disabled Days since Jan 1, 1970 that account is disabled A reserved field The password field must be filled. The encryped password consists of 13 to 24 characters from the 64 character alphabet a thru z, A thru Z, 0 thru 9, . and /. Refer to crypt(3) for details on how this string is interpreted. The date of the last password change is given as the number of days since Jan 1, 1970. The password may not be changed again until the proper number of days have passed, and must be changed after the maximum number of days. If the minimum number of days required is greater than the maximum number of day allowed, this password may not be changed by the user. An account is considered to be inactive and is disabled if the password is not changed within the specified number of days after the pass- word expires. An account will also be disabled on the specified day regardless of other password expiration information. This information supercedes any password or password age information present in /etc/passwd. This file must not be readable by regular users if password security is to be maintained. FILES
/etc/passwd - user account information /etc/shadow - encrypted user passwords SEE ALSO
chage(1), login(1), passwd(1), su(1), passwd(5), pwconv(8), pwunconv(8), sulogin(8) AUTHOR
Julianne Frances Haugh (jockgrrl@ix.netcom.com) SHADOW(5)
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