Michael Roth mroth at
Mon Jun 21 02:07:40 CEST 1999

On Sun, 20 Jun 1999, Janusz A. Urbanowicz wrote:

> What are OpenPGP requirements for a situation that I want to encrypt one
> message for recipients using PGP2 (is it possible to use GPG to make PGP2

To encrypt in an PGP2.6x compatible format you need IDEA and RSA
modules (check if you need a license for these patented alogrithms) and
than use the following options:

   --rfc1991 --cipher-algo idea --digest-algo md5 --compress-algo 1

Please note, PGP2.6 could only read the resulting message if all keys you
used to encrypt or sign a messages are RSA keys. If you use only one none
RSA key, PGP 2.6.x will fail.


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