Thanks for your help... I finally got this worked out. One thing I had forgotten was the Passphrase.
my $message = $pgp->decrypt(Data => $PGPEncryptedMessage, Passphrase => "secret_passphrase") or die "Error: ".$pgp->errstr;

The other thing was that I had accidentally encrypted the original message with the wrong keyID.

I found the software here useful in generating some keys to encode/decode with. http://www.pgpi.org/products/pgp/versions/freeware/dos/2.6.3i/

It allows you to specify your passphrase when you generate.

In reply to Re^4: Decrypting a message with Crypt::OpenPGP by willjones
in thread Decrypting a message with Crypt::OpenPGP by willjones

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