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Hello and welcome to the New York, this project, following this project will discuss what is basically

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what is the meaning of authentication and security.

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The fact that I tell you what, that's why I've said it, so it is a package that allows to look for

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the body of the post request and finish the data based on the name of my input.

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OK.

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Let's see one example.

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For example, I'll be going to my registered or.

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You can see I'm having my email and password.

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So for this input, I'm having a name call password and for this input I'm having a name called username.

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So what this body posture does is it allows to look through the body of the post request.

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So this is the post request so that who make them to go to the body of the post request and fetch the

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data based on name of the input.

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OK, we can get the database and the name of the defeat.

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Like if you use this password, then we can get that data that the user is entering in this input.

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OK, so that is right.

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This body part that is used.

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So here you are, Lexton.

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You are encoded extended to meet the encoding, what type of encoding it should be in a text format,

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right?

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So that's when we have for you this.

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So we can also see over here.

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Just wait a minute, I will show you.

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Yeah.

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So once the user is.

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Registering then you can see your request, dot boarded our passport.

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So using the body, we are getting the passport, get out.

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You can see when the user is logging in using the requested border username.

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The request is the request by the client.

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That means, for example, if you see your post in the log in, no doubt the user is sending a request

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and also in the request.

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What we are doing this faster than you are related to a database that we can see in the later parts

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are not just focus on the signal line.

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OK.

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This way you don't just focus on the signal.

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Whenever the user is using accessing this logging road and then posting a request, then a request that

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boarded-up username.

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We are fetching the, you know, the doc, the user name from this big question why did I do that?

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Eventually adding that instead of variable called user and not dissimilar to password?

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So this is what it is allowing us to do.

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OK, so basically we are going through the body of the post request and fetching the database on the

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name of the input.

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OK, so that is how we use this for 40 percent.

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Now, let us dive into authentication and security.

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So what does authentication of security means?

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It means securing our data.

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As you know, day by day, we have seen many activities like our data being left and you can see many

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data breaches around the world and all this kind of stuff.

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So when like when you see some movies in those, they will show the people who are working in cyber

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security to hack us.

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So I show you a website.

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It's a good website to prank your friends, hacker Typekit dot com.

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You click on Stop Hacking and just enter some random, you know, some random picture like this.

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Keep on clicking it, then it will write some food I'm just clicking on and that's they have just put

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my finger on it.

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OK.

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It shows that you're hacking something offensive, it's a nice prank.

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So this is what they're basically in many ways they show what security and authentication is, but it's

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not.

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It's basically it's also a web development practice where we should secure the username password and

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the details of the client's safe from the attackers.

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There can be potential threats that we have to be aware of.

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So, for example, there can be a network, but it's like that can be one weak system where there is

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a threat so that what attacker will do, he'll target that system and then he will get into that network

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where the system is connected.

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So it's not only the loss of the system, it's also the loss of the whole network, for example, one

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end system.

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If, for example, are working in an office.

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OK, let me show you.

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Example, you are working in your office.

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And then this is your end system.

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This is your end system, and there is a big sign out of your office.

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And then you're connected to your office through this end system once attacker.

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Attacks your system and your system gets compromised.

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That means he goes into the network and the whole server gets compromised.

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So that should not happen, right?

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So that's where endpoint security is very important.

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So you have to not allow the attacker to enter into your system.

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So how to do that?

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There are various ways in computer networking, so you can use tools such as Wireshark then map to analyze

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the traffic, to only send the traffic that is authenticated and everything.

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This is basically authentication is a good security means creating an algorithm so that your data is

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safe.

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Authentication means based on the security of algorithms authenticating the user's OK based on the data

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that they're providing before signing in, not logging up something what you say.

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So how do to like what you think by.

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You know, my basic security and also so how to do that, so we know how to like how to use and enforce

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that should not be visible to others, should also not be visible to the bedside.

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For example, if we are using Google, we are using Facebook.

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Then if our passwords are known by Facebook people, then someone in the Facebook organization may use

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it as like they can use that they can leak the data, which causes data breach, and then we may have

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a loss of economy or something.

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So even the providers, the service providers should also not know a lot of passwords.

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So that is the main thing.

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So that means there should be a mechanism.

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So we will see that mechanisms by level, by level.

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It's the first of it is just registering the users with username and password.

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OK.

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This registered the users with username and password, so I use notepad over here.

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So first thing, what you will do.

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So basically, you.

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Coming up to a MongoDB database.

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So I write that steps, I'm going to show the court related to that.

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The first thing is you have to have a database to store the username and password.

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Second thing, once you're having the database.

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You need to create a keep up with the database.

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Create a schema, but the database towards schema means that means like, for example, the database

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name in your database, you may have many tables.

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So since we are using new skill, that means so no sequential language, the data will be in the form

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of documents in the form of JSON objects like JavaScript objects.

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So if you are using a school sequential sequential language, that means it will be in the form of tablets.

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My skill post get a sequel and those things.

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But now here we are using MongoDB.

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It will be in the form of documents, so we have to create some data structure for the document, like

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what the document should contain, what should be the name of the variable that we are storing and send

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the document.

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So basically, it's username and password, right?

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That.

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Now.

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We have to create a new user document when the user posted a crossing register, right?

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Create new user.

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Document.

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When you use it post a request to slash the gesture.

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That means get access to the registered rope.

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OK.

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You open the register and then he enter Emeli entered password and everything he click, Don't register

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when you click, don't register.

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We have to do the basic valuation validation.

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That means like basic means.

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So for example, if you click some random picture and they can't register, it will say that email address

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should include an extra symbol.

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This is the basic allergen like it can be anything at the rescue, even if this year clicking registered

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registered because it just checks for the basic validation.

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OK, so since we don't want that, I'll delete that from my documents yet.

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We just refresh it.

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Yeah, see, yet a name has been created and we are having salt and hash that we have seen the following

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videos.

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So basically, we are not able to see that password, right?

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So this is sort of be the fourth and fifth level variants will not be even the servers will not be able

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to see the password.

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It will be in the form of salt and hash.

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OK, so deleted as a correction.

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So this is what happened, didn't check for the basic validation and then allowed the registration process.

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OK, so that is what we have to do the third step.

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We know that it makes it a question that the user documented inside the MongoDB.

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So far, the MongoDB database will be using them on campus.

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Com Companies are, you know, do you wait for MongoDB can also use inside show inside data analytics,

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the hypertension.

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So we can do this or basically will be I'll be using hyper terminology.

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You can use any terminal like Linux Terminal or in or we export terminal or anything.

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But in this course, I'll be using the Typekit because it has a lot of good customizations and all kinds

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of stuff.

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It looks good to see you again soon.

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So, yeah, and also that it will be a visual studio code that I'll be using because it has a lot of

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snippets and packages to strong.

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So we'll get into this.

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So this is the third step, this is the I'm talking about the first step in this axiom.

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They use this to the username and password entered by the users inside the.

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Database 14, if Blank posted to through logging road, we have to check with this email and its corresponding

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password exists in our database.

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If logging.

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South.

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Then check if the credentials.

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At present.

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In the database or not.

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OK.

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If someone is asking for a log in, like if they don't keep a log in and entering the and password,

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then we have to check whether the login credentials are present in the database or not.

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These are forced if the database matches with the credentials, then within opening this week that you

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know the feed newsfeed page where you can post message posts and everything.

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But this the court is very simple.

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What we have to do at issue, first thing cannot be the MongoDB, etcetera.

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So how to connect to the MongoDB server?

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One simple line.

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First thing, you have to import mangoes.

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So how to import mangoes?

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Open your terminal and then just click on.

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And being.

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Install Mongoose.

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And then it would install once installed, you can require it once required, then you can now just

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use this single line so that it will get back to Mungo's Dock Connect.

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MongoDB localhost two seven zero one seven slash.

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This will be the name of the database that we are creating for.

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The database will be creating a users database, so I'll give the name users DB.

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This thing is for sometimes the version can be older, like every time it will get updated.

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Since it's open source, everyone will update it.

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So we have a standard version and you don't have any, you know, some any errors kind of thing passing

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it, then we have to do this.

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So this is basically if you're getting alerts for getting any ideas other than this, then just copy

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paste data that you get in the terminal based in Google, search for Stack Overflow, so every programmer

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should use Stack Overflow for must.

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So whenever you are in doubt?

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Yes, useful.

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Yes.

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They added that the terminal gives just copy.

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Paste it in the Google and you'll get the solution for the error.

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Someone, someone or that any one of them would have already got that error in their earlier programming

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or carrier.

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OK, so once you are connected with the database, with the MongoDB database, the next step is to create

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the user schema.

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As I said it creating the user schema, creating you me this line, the constant user schema as equals

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to new mongoose schema.

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And then in such scheme, a watch, we should have the data structure that basically these three things

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they can just comment it for now.

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OK, so that we only need user name and string.

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We don't need Google any Facebook.

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It is secret and on government.

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That's not our problem.

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So this is how the user schema looks like.

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So offer the user schema, we have to create the user model like the user, a, you know, user document.

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So the user document we have sending the user a schema.

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So this will be the name of the collection.

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So one thing you have to remember is first thing is document.

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So first thing is database database consists of collections.

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And collections, guns are soft documents.

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Right.

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So database is the name of the database that is used to be.

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So the collection name is use it.

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But this is the name of the collection inside the US collection.

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We'll have the documents.

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So now we have completed the first three steps.

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So the first two steps now that that's to create you is a document when news reports are requested that

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it is still.

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So where is the dog?

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Get registered?

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So here is nobody.

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All this phone will be given to you.

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You can check through the port.

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So first, your basic know what you have to do is to just understand this.

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Get their sense of the concept.

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To get the vote vote when rendering, I just said, OK, what we are asking for for statements, and

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you can also request that additional get means when the user access.

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So you are like when you are world becomes localized, like when this is the you warrant.

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What we have to render to the plane forced it, which means in this you are Lebanese clicking something

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submitting to that like me when the client is sending data to the server, that is request.

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So here in politics, we have to search for Abbott first major general.

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Yeah, so here you can see Abbott -- registered.

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So yeah, there is a big thing like you said or registered and everything.

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Don't add up everything of this thing because this is this comes in the later part, later security

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level.

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One thing you have to remember is whenever user clicks unregister, the app is simply user, not registered

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user name password.

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So you going means are calling this collection because the name of the collection has been saw before,

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and then we are registering him with the username and password like basically we are destroying the

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username and password.

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How we are getting the username and password by using the body parts.

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As I said in the earlier radio, ad lib industry only earlier requested by Iraqis, and it will get

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the username that the user is posting.

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Store that inside a username.

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That means that the user's key, if you see that having a username and password have been stored there.

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This is how we are making the post request.

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OK, now next thing off of the post requests, we have to validate, but if the user is picking on logging

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so here, as you can see in logging, abduct post logging here.

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You're creating a username.

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Here, since we are using password, there is no code for authentication, but a simple thing, you

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can just call the user data like find that will be one method called fine.

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Just let me show you that.

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Yeah.

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So this one user dot find one.

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So find one method will run through this collection and then we'll check whether they had the user name

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matched to this user name.

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You can use another condition like password call and request body to request anybody, run past it and

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then check with it.

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If they if it is present, then it will send back the phone to use it.

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Otherwise, the error if another will consolidate log data.

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If not, if it is found user, then will you know?

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We basically render him the secret speech.

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So this is the first step of lobbying for this, they're not having the court because the first step

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is none of them, none of them will be discussed, simply stating the username and password that he's

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giving.

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There is nothing encryption, right?

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So from the next we have been see how to encrypt the data using database encryption, big hashing,

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insulting and then cookies and sessions and then all the stuff that is required.

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So for that, we'll have a code and each call what it does and everything.

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So with this, we have completed the basic level one that is registering users with do that have been

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password checking them and then allowing them to write encryption in it.

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So the encryption part will start from the next reader.

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See you in the next reading.