[Rd] Masked user input

From: miller_2555 <nabble.30.miller_2555_at_spamgourmet.com>
Date: Fri, 12 Jun 2009 15:08:40 -0700 (PDT)

Hi -

   I'm creating a package of database tools. A function in the package requires the username and password as input to the function in order to initially connect to the target database(s). Of course, this poses a significant security issue given the possible retention of the function statement in cleartext. I did not readily encounter a package meant to mask input from the user nor do I know of any method to prevent sensitive information from appearing on-screen or from logging in the command history of a running R session. While using the --vanilla option when starting R helps with permanent logging of sensitive information, it is not always preferable to run R with special flags. Is any solution available to prevent the logging/ display of user input. Obviously, hard-coding the sensitive information is not an option.

Note: I currently use the following (summarized) convention:

myloginfunction <- function(uname = readline("Enter username") , passwd = readline("Enter password")) { print(c(uname,passwd)); };

However, the readline function prints the response on-screen.

Thanks!

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