I am trying to create secret keys for a post so users can edit them without entering password. Typically I use two secret IDs to reference a post,
ID1=8 byte long random code
ID2=8 byte long random code
The format is like www.domain.com/post.php?id1=12345678&id2=12345678
Somehow I am thinking using two code is more secure (harder to break) than using a single 16 byte code? Is my assumption correct? Is using two code more secure than a single code, assuming both have the same length? Programatic suggestions are welcome