Authentication Orientation

At its most basic, private communication between two persons' devices involve one function, encrypt(msg, key), to create an encrypted version of the message, e_msg, and another function, decrypt(e_msg, key), to recover the message.

The mathematicians who create these two functions tell us that the key is an astronomically large number with certain properties that matter to them but not to us. We're promised that only people or devices that possess the key can participate in any conversation …

authentication basic beginners communication decrypt devices encrypt encrypted function functions key large matter message msg private recover security the key version webdev