JSON Web Tokens (JWT) in .NET 8 Web API 🔒 - User Registration / Login / Authentication

JSON Web Tokens (JWT) in .NET 8 Web API 🔒 - User Registration / Login / Authentication
In this tutorial, we will discuss about the implementation of JWT authentication in asp.net core 8.0 with example.
A JSON web token(JWT) is JSON Object which is used to securely transfer information over the web(between two parties). It can be used for an authentication system and can also be used for information exchange. The token is mainly composed of header, payload, signature. These three parts are separated by dots(.)
Header
A header in a JWT is mostly used to describe the cryptographic operations applied to the JWT like signing/decryption technique used on it. It can also contain the data about the media/content type of the information we are sending.
{
"typ":"JWT",
"alg":"HS256"
}
Payload
The payload is the part of the JWT where all the user data is actually added. This data is also referred to as the ‘claims’ of the JWT. This information is readable by anyone so it is always advised to not put any confidential information in here.
{
"userId":"b07f85be-45da",
"iss": "provider.domai...",
"sub": "auth/some-hash-here",
"exp": 153452683
}
Signature
This is the third part of JWT and used to verify the authenticity of token. BASE64URL encoded header and payload are joined together with dot(.) and it is then hashed using the hashing algorithm defined in a header with a secret key. T
JWT Example :
header:
{
"alg" : "HS256",
"typ" : "JWT"
}
Payload:
{
"id" : 123456789,
"name" : "Manoj"
}
Secret: manojdeshwal
JSON Web Token
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6MTIzNDU2Nzg5LCJuYW1lIjoiSm9zZXBoIn0.OpOSSw7e485LOP5PrzScxHb7SR6sAOMRckfFwi4rp7o
Tools Used: Visual Studio 2022, Swagger and Postman
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Thanks for watching. 😊😊 🙏🙏

[@aguelejoseph5753]

Mid way into video and I can see already that you are a good teacher. Great work bro. Thank you

[@MarryA-qc4sy]

Hello sir, waiting for your next video. Long gap, didn't see any update. Please keep uploading regularly. I like all your video tutorials. Thank you. 😊

[@ShwetaKadam-gt5cn]

very nice explanation with implementation of JWT Token Authentication.

[@ManojDeshwal]

Glad it was helpful!

[@iwandev7798]

thank you sir, i will waiting for next video to add refresh token. Because i want to know, how to implement refresh token if access token expired.

[@jennasyeda6613]

Superb! very nice way to create JWT. but if u mention the the details about header payload signature in the video then it will greate for the junior developers, this type of question ask in interview, Thank for the video.

[@broadshare]

But why all this when .NET 8 already has auth endpoints to generate that?

[@vimleshsharma3251]

very good you have explained in very simple way

[@ManojDeshwal]

Thanks alot

[@lauwwulan861]

Thank you for the explanation and code example

[@SonuKumar-nk4gw]

how to consume this api in mvc application with token....please

[@PritamPaul-y1h]

i also wanted to know this..

[@CarlosEnriqueDuarteOrtiz]

thank you very much :), greetings from Mexico

[@ManojDeshwal]

You're welcome!

[@sweetysnehith9692]

Hi
Can we pass Authorization bearer token in swagger itself is there any reference

[@ManojDeshwal]

Yes we can pass. For that we need to enable token option in swagger itself

[@sweetysnehith9692]

@@ManojDeshwal can you please share any reference for it

[@phanimudapaka306]

Can you please post the video of refresh Token generation .. Thanks in Advance..

[@brahmajiraji1123]

Nice tutorial

[@rishumehta745]

do you have a video where you connected your database and created model? i missing on that point. new to programming

[@KrishnaRaj-hw6je]

Can you post the Project to create a project management tool for the frontend using react js and backend use web api .net and database use sql server can post for me with in two days

[@josecortijo9311]

how to get the authenticated user

[@khatariinsaan5284]

very Helpfull

[@S-yf5te]

Who will issue jwt token

[@govindkumarchoudhary4106]

nice tutorial

[@gunasekaranpalanisami6182]

Nice , I need ROLE base bro

[@sivamariyappan4853]

could you pls give the source code sirr