I am working on a site, I want to let existing customer request a online login id to sign in later.
After they sign in, I will send out a email with a link that after click will enable the account automatically.
On that link I am thinking to place the encripted customerID, so when coming back I can decript it and enable the account in DB.
How can I do the encript for a customerID? and after they reply, how can I decript the customerID from the QueryString?