Problems with PGP user decrypting GPG files

[Kirkland, Mike # IHTUL]

Hi everyone,

We are in the process of testing our encryption / decrytion with some
trading partners that are using PGP 7.0.1 on windows 2000 advanced server.

We are using gpg 1.0.6 on tru64 unix v5.1 on a DS10.
I have imported into GPG their public keys, and our private/public pair that
were exported from PGP 6.5.8 on a PC.

I encrypt files by using the following shell script:

#!/bin/ksh
#
#  Program Name: /usr/bin/encryptgpguser
#
#  Author: Mike Kirkland
#  Date: 11-28-01
#
#  Purpose:     This script will encrypt files past to it from server lyra
#               after encryption lyra will ftp files from this directory to
be sent to payer
#               This script will be rexec from lyra with 2 parameters passed
to it
#
#               1 the filename to be encrypted
#               2 the payer's public key identifier to be used for
encryption
#
#  Modifications:  N/A
cd /gpguser

USAGE="Usage: `basename $0` <filename> <payer_public_key_id>"  # If no
filename or more than one, then tell how to use this script
FILENAME="$1"
PUBKEYID="$2"

if [ "$#" -ne 2 ]; then   # Check to see that only   one filename and keyid
is passed in
  echo ;
  echo $USAGE;
  exit 1;
fi

if [ -s "$FILENAME" ]; then    # -s option checks that file exists and
filesize > 0
  if [ $? -eq 0 ] ; then
    echo ;
    echo "filename $FILENAME found and is not an empty file";
      if [ -e "$FILENAME.gpg" ]; then
              rm $FILENAME.gpg;
              /usr/bin/gpg --batch -q --no-tty --no-verbose
--no-secmem-warning -r "$PUBKEYID" -e "$FILENAME";
              echo "PART 1 filename $FILENAME successfully encrypted and
copied as  $FILENAME.gpg" ;
              exit 0;
      else
              /usr/bin/gpg --batch -q --no-tty --no-verbose
--no-secmem-warning -r "$PUBKEYID" -e "$FILENAME";
              echo "PART 2 filename $FILENAME successfully encrypted and
copied as  $FILENAME.gpg" ;
              exit 0;
      fi
  else
    echo "ERROR filename $1 encryption failed!! check $USAGE or call your
Unix System Administrator"
  fi
else
  echo "ERROR filename $1 is not found or filesize is zero bytes"
fi
exit $?



Everything is ok on the encryption, but when our trading partner gets the
file they get this error message:

   Error: encrypted session key is bad

Any thoughts?

Thanks

Mike Kirkland
Unix System Administrator
National Data Corporation
Phone:  (918) 481-2817
Fax:      (918) 481-4275
mike.kirkland@ndchealth.com <mailto:mike.kirkland@ndchealth.com>