1 00:00:00,150 --> 00:00:02,730 Hi, everyone, welcome back to an election. 2 00:00:02,880 --> 00:00:09,720 In this lecture, we are going to talk about encryption, why Wi-Fi uses encryption and why it is important 3 00:00:09,720 --> 00:00:17,520 to use so for data security, Wi-Fi access point encrypted data packets into a cryptographic algorithm 4 00:00:18,060 --> 00:00:21,810 to prevent hacking and other kinds of security breach. 5 00:00:21,810 --> 00:00:26,370 Of some extent, though, each of them have some sort of an ability. 6 00:00:26,610 --> 00:00:31,630 So before exploiting of those vulnerabilities, let us see the encryption types and their policies. 7 00:00:32,490 --> 00:00:34,440 So what kind of encryption we have? 8 00:00:35,180 --> 00:00:40,920 OK, so let me clear that the blue line means wireless local area network that we are going to see later 9 00:00:40,920 --> 00:00:41,140 on. 10 00:00:41,620 --> 00:00:48,440 OK, so now we are having first one WPP, which is wired equivalent privacy. 11 00:00:49,030 --> 00:00:55,620 Then we have WIPA, which is Wi-Fi protected access and the advanced version of this WIPA two, which 12 00:00:55,620 --> 00:00:57,240 is Wi-Fi protected access to. 13 00:00:57,740 --> 00:01:02,130 So all three protocols have their own encryption methods better than the previous one. 14 00:01:03,210 --> 00:01:11,160 So if you talk about WSP, so it uses Oddisee for algorithm, for encryption, for encrypting data packets. 15 00:01:11,940 --> 00:01:18,130 If you talk about WIPA, it uses Beaky IP encryption based on WCP. 16 00:01:18,990 --> 00:01:25,060 Now it's time to see what encryption matter algorithm WPE to use this. 17 00:01:25,290 --> 00:01:32,020 So if you talk about WPRO two, it uses AEF, which is more secure and very difficult to be. 18 00:01:32,530 --> 00:01:39,810 OK, so this is all about we are having encryption, so why there is need to be encrypting your data 19 00:01:39,810 --> 00:01:42,980 packets using some cryptographic algorithm. 20 00:01:43,620 --> 00:01:51,570 So 1997 Wi-Fi Alliance released the first security standard for wireless networks that is WAFB. 21 00:01:52,200 --> 00:01:59,310 But sooner in 2000, one WOUB has broken twice, leading to the password recovery and hacking of the 22 00:01:59,310 --> 00:02:00,200 wireless networks. 23 00:02:00,840 --> 00:02:08,310 Then again in 2002, a security researcher discovered a security flaw in WSP. 24 00:02:08,820 --> 00:02:12,220 So WSP was broken beyond repair at this time. 25 00:02:13,110 --> 00:02:19,140 So this was the time I totally committee said that they need to click patch for WSP. 26 00:02:19,800 --> 00:02:26,160 Since 2003, WIPA, an intermediate solution for WSP, was released. 27 00:02:26,700 --> 00:02:31,200 So WPE was supposed to run on the same hardware supported by WSP. 28 00:02:31,950 --> 00:02:35,330 All what we needed to do is a framework update. 29 00:02:35,670 --> 00:02:37,650 So some key things to be noted down here. 30 00:02:38,400 --> 00:02:46,620 WPE users pecky IP encryption, which wraps up all the WP packets to clean somewhen abilities, discovered 31 00:02:46,620 --> 00:02:48,910 earlier and provide a better security. 32 00:02:49,290 --> 00:02:52,200 So it was basically based on WCP. 33 00:02:52,980 --> 00:03:00,390 So hardware changes were not mandatory for WPA as it was supposed to fix the vulnerability of the router 34 00:03:00,600 --> 00:03:02,770 that had already been served. 35 00:03:03,450 --> 00:03:10,410 So at the same time, no Wi-Fi alliances are start working on Motsyk or protocol wi fi, which was named 36 00:03:10,410 --> 00:03:19,110 as WIPA to so early in September 2004, Wi-Fi Alliance released the more secure version of wireless 37 00:03:19,110 --> 00:03:21,140 security, which is WPA too. 38 00:03:21,450 --> 00:03:24,690 So this is why WPA is two is more secure. 39 00:03:24,930 --> 00:03:29,020 OK, so how WPA was different from WPA. 40 00:03:29,310 --> 00:03:31,790 So there are some basic differences between both of them. 41 00:03:32,280 --> 00:03:35,460 So WPA two uses AEF for Pacard encryption. 42 00:03:35,700 --> 00:03:37,380 It is perhaps more secure. 43 00:03:37,380 --> 00:03:41,020 Encryption made it available and broken at this particular time. 44 00:03:41,700 --> 00:03:44,640 So hardware changes are mandatory for running WPE. 45 00:03:45,360 --> 00:03:52,980 And if you talk about released as a new standard for wireless devices and from 2006 WPA to some sort 46 00:03:52,980 --> 00:03:58,450 of certification is mandatory for all new devices to build the Wi-Fi trademark. 47 00:03:58,950 --> 00:04:00,830 So this is how encryption works. 48 00:04:00,840 --> 00:04:05,510 This is what encryption is and this is what encryption contains inside it. 49 00:04:05,880 --> 00:04:07,290 So this is all for this lecture. 50 00:04:07,320 --> 00:04:08,280 I hope you enjoyed it. 51 00:04:08,280 --> 00:04:09,770 And thank you for watching this lecture.