1
00:00:08,240 --> 00:00:15,380
Let us start with the last lecture of fundamental cyber cybersecurity model, and that is the transport

2
00:00:15,380 --> 00:00:16,250
layer security.

3
00:00:16,640 --> 00:00:23,510
In this lecture, you will learn to describe the transport security protocol and the tireless handshaking

4
00:00:23,510 --> 00:00:24,030
protocol.

5
00:00:24,710 --> 00:00:25,760
Let us get started.

6
00:00:27,170 --> 00:00:29,510
What is transport layer security?

7
00:00:29,570 --> 00:00:30,560
That is peerless.

8
00:00:31,510 --> 00:00:39,130
Beardless is a cryptographic protocol that provides end to end communications security on networks and

9
00:00:39,130 --> 00:00:43,390
is widely used for Internet communications and online transactions.

10
00:00:44,260 --> 00:00:51,220
It is an IETF standard intended to prevent eavesdropping, tampering and message forgery.

11
00:00:52,510 --> 00:01:00,550
Common applications that employ tearless include web browsers, instant messaging, applications, emails

12
00:01:00,790 --> 00:01:02,530
and voice over Internet protocol.

13
00:01:04,060 --> 00:01:12,130
Many businesses used to secure all the communications between the Web servers and browsers, regardless

14
00:01:12,130 --> 00:01:15,190
of whether sensitive data is being transmitted.

15
00:01:16,780 --> 00:01:23,710
Beardless Predecessors', that is the secure soccer player, was developed by Netscape in 1995.

16
00:01:24,700 --> 00:01:29,560
Now the obvious question is what is the difference between tearless and unnecessary?

17
00:01:31,180 --> 00:01:39,490
Fearless is more efficient and more secure than SSL as it has a stronger message authentication, key

18
00:01:39,490 --> 00:01:42,880
material generation and other encryption algorithms.

19
00:01:43,630 --> 00:01:53,470
For example, Dialis support pre keys, secure remote passwords, elliptical keys and cabarrus that

20
00:01:53,470 --> 00:01:54,970
as SSL does not.

21
00:01:56,370 --> 00:02:05,020
Businesses are not interoperable, but the U.S. does offer backward compatibility for older devices

22
00:02:05,170 --> 00:02:06,340
still using a system.

23
00:02:07,860 --> 00:02:15,630
The is protocol specification defines two layers, there'd be electrical protocol, provides connection,

24
00:02:15,650 --> 00:02:23,970
security and peerless handshake protocol enables the client and so to authenticate each other and negotiate

25
00:02:24,180 --> 00:02:27,450
security keys before any data is transmitted.

26
00:02:29,220 --> 00:02:32,340
So this is the peerless handshaking protocol.

27
00:02:32,970 --> 00:02:35,760
The peerless handshake is a multi-step process.

28
00:02:36,360 --> 00:02:43,410
A basic loose handshake involves the client and the server sending hello messages and the exchange of

29
00:02:43,410 --> 00:02:46,090
keys, cipher message and a finished message.

30
00:02:46,770 --> 00:02:47,930
Let's get started here.

31
00:02:48,480 --> 00:02:58,200
So the client since hello the server replies hello certificate plus done client replies client key exchange

32
00:02:58,390 --> 00:03:03,060
plus change siple specification and then client is finished.

33
00:03:03,870 --> 00:03:10,140
Then server replies OK, change cyper specifications changed and Silva replies finish.

34
00:03:10,650 --> 00:03:13,830
Now the handshake protocol is being established.

35
00:03:14,220 --> 00:03:20,580
A secure connection is being established between client and server and then the transfer of data begins.

36
00:03:21,390 --> 00:03:28,380
So the server checks what the highest SSL or Peeler's version is that being supported by both of them?

37
00:03:29,580 --> 00:03:35,580
This certificate must be trusted either by the client itself or a party that the client trust.

38
00:03:36,090 --> 00:03:39,480
We have seen about these certificates in previous videos.