Extraction of public key from an encrypted etc. message

[Steffen Nurpmeso]

vedaal at nym.hush.com wrote in <20191118020337.0881AC0601 at smtp.hushmail.com>:
 |On 11/15/2019 at 7:26 PM, "Steffen Nurpmeso" <steffen at sdaoden.eu> wrote:\
 |The public key _is_ in there, no?
 |=====
 |No.
 |
 |Only the public Key ID is in there, not the entire public key, and \
 |and even this keyID can be hidden too,
 |if the sender uses the option of --hidden-encrypt-to

Yes -- thank you very much!  I am reading RFC 2440 again now, it
is a session key created by using the public key only.  I have
this document for so many years now, i had forgotten about it.
Ciao!

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)