That makes no sense.

You create some random key K.

You encrypt k using the public key of the recipient, ie. e(k).

You encrypt the message using K.

You send both of those to the recipient. A cyphertext only attack can recover K from your message M. It is not then possible to recover a private key from K.

In neither case do you ever have the private key, as such it cannot ever be recovered from a core dump. In this script it seems like they are simply doing this twice, for some unknown reason.