i would refer to this page:

https://www.zen-cart.com/content.php?317-cookies

i have looked at the cookies i have for a couple of zen-cart sites and can say the above referenced page appears accurate.

with regards to your ssl question, i do NOT believe ZC handles cookies differently with regards to http v https pages. this would have to be explicitly done in the code, and considering a base ZC install only has 1 cookie, i do not think ZC has any specific behavior differences for http v https.

hope that helps.

best.