I have been working with MySQL a bit (yes, I know, heresy) and encountered a 
program called mysql_config_editor. In my opinion it does a better job of local 
password management than using a ~/.pgpass file. Instead of assuming that a 
mode of 600 will keep people from peeking at your password, it encrypts the 
password, but keeps the other parameters like host, port and user available for 
viewing as plaintext. You can read more about it here:

  https://dev.mysql.com/doc/refman/5.7/en/mysql-config-editor.html

The host, user, password values are grouped into what are called login paths 
which are of the form:

  [some_login_path]
  host = localhost
  user = localuser

Just like the config files you have no doubt seen before. The only way to set a 
password is to use the command:

  mysql_config_editor set --login-path=some_login_path --password

which will prompt the user to enter the password for the specified login path. 
The password is never seen as plain text. There are other commands to set, 
remove, print and reset values for a login path. The print command that shows a 
password will display this instead:

  password = *****

Adding a similar feature for PostgreSQL will also require a change to the psql 
program to specify and handle --login-path used for authentication. This may 
also be the case for some of the other pg_* utilities.

I think adding a feature like mysql_config_editor to PostgreSQL is an easy way to set up 
multiple "personalities" for connecting to different PostgreSQL servers. The 
password protection will deter the curious user from gaining access to your data. It will 
not stop a determined hacker, but the idea is to make it more difficult.

Other than this mailing list, is there a way to make a feature request for 
PostgreSQL?

Tom Ekberg
Senior Computer Specialist, Lab Medicine
University of Washington Medical Center
1959 NE Pacific St, MS 357110
Seattle WA 98195
work: (206) 598-8544
email: tekb...@uw.edu




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