What encryption algorithm does Lotus Notes use?

What encryption algorithm does Lotus Notes use to encrypt data? Where can I find current documentation regarding Lotus Notes encryption algorithms?

Subject: See this article on the Notes/Domino wiki

http://www-10.lotus.com/ldd/dominowiki.nsf/dx/supported-key-sizes-in-notesdomino

Subject: See this IBM Infocenter page

http://publib.boulder.ibm.com/infocenter/domhelp/v8r0/index.jsp?topic=/com.ibm.help.domino.admin85.doc/H_NOTES_AND_DOMINO_ENCRYPTION_2250_OVER.html