Cory.Nickerson on "Custom Login & WordPress Cookies"

I'm making my own custom login page and functions and just need to know how to write the data for the cookies. I did var_dump($_COOKIE) and came up with this info which is stored in cookies.

array(4) {
	["wordpress_test_cookie"] => string(15) "WP Cookie check"
	["wordpress_logged_in_26136172b2949242d677f08fc280dbe6"]=> string(49) "Admin|1375480283|95c9b58b40883cb2b196138f1e45a8d9"
	["wp-settings-time-1"]=> string(10) "1374790168"
	["PHPSESSID"]=> string(26) "bbq3v8s3gk0qtsiggdf0j3q362"
}

What does each one do and how are they created?

Thanks