(The last lecture talked about tls1 2 handshake process. Have you fully mastered it?However, tls1 The "old agreement" was already "10 years ago". Although it passed the test, after all, time is unforgiving. It can't keep up with the current Internet in terms of security and performance.So after four years of repeated polishing and nearly 30 drafts, tls1 3 finally made its debut last year (2018), once again setting a new standard in the field of information security.Before capturing packets and analyzing handshakes, let's take a quick look at the three main improvement objectives of TLS 1.3: compatibility, security and performance.)