Accessing PGP from Perl without storing temporary files

fx has asked for the wisdom of the Perl Monks concerning the following question:

Hello,

I've been trying to get one of my Perl programs to encrypt some data with PGP. At first I tried to use PGP5.pm (I think) but that writes the unencrypted data to disk before encrypting. This may not be safe if someone is 'watching' that directory.

I then tried doing something like open PGP, "|/usr/local/bin/pgp -eaf ... >/tmp/$PROCESS.txt" so that I could print PGP $message and get the encryted result in a temporary file on the drive.

This works if ran from the command line. If I then try to turn this into a web page script things fail with Please enter some random text on your keyboard until you hear the beep: cannot open tty, using stdin in the error log.

Does anyone have any advice for encrypting data using PGP and Perl without writing the plaintext to disk first?

Thanks,

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Re: Accessing PGP from Perl without storing temporary files by MZSanford (Curate) on Oct 18, 2001 at 15:47 UTC
it appears pgp verifies you are using a terminal to prevent anything it considers fishy. I would sugest taking a look at the Crypt::OpenPGP module, as i believe it will do what you want. _{woo hoo, 200th post} i had a memory leak once, and it ruined my favorite shirt.	[reply]
Re: Accessing PGP from Perl without storing temporary files by derby (Abbot) on Oct 18, 2001 at 19:36 UTC
fx, Are you married to PGP? I ran into the same issues with GPG and found of the four or so competing GPG modules only GPG did it all in memory. -derby	[reply]
Re: Accessing PGP from Perl without storing temporary files by fx (Pilgrim) on Oct 19, 2001 at 13:30 UTC
Thanks to MZSanford - I will have a look at that module. Derby, as long as the encrypted copy can be viewed on a Windows OS I'm not bothered. Thanks, fx	[reply]