The following bug has been logged on the website:
Bug reference: 11829
Logged by: Jeff Janes
Email address: jeff.janes@gmail.com
PostgreSQL version: 9.2.9
Operating system: Linux
Description:
pgp_sym_encrypt is documented to have an enable-session-key option.
But that option does not seem to exist, and as far as I can tell it never
has existed.
jjanes=# select pgp_sym_encrypt('foo','bar','enable-session-key=1');
ERROR: Illegal argument to function