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

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",
"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

Tools Used: Visual Studio 2022, Swagger and Postman

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Thanks for watching. 😊😊 🙏🙏

[aguelejoseph]

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

[MarryA-qcsy]

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-gtcn]

very nice explanation with implementation of JWT Token Authentication.

[jennasyeda]

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.

[iwandev]

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.

[vimleshsharma]

very good you have explained in very simple way

[lauwwulan]

Thank you for the explanation and code example

[CarlosEnriqueDuarteOrtiz]

thank you very much :), greetings from Mexico

[broadshare]

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

[phanimudapaka]

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

[SonuKumar-nkgw]

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

[KrishnaRaj-hwje]

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

[sweetysnehith]

Hi

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

[sivamariyappan]

could you pls give the source code sirr

[rishumehta]

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