JSON Web Tokens (JWT) in .NET 6 Web API 🔒 - User Registration / Login / Authentication

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JSON Web Tokens (JWT) in .NET 6 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. 😊😊 🙏🙏

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Комментарии

Great explanation ❤ Finally I learned how to use auth middleware with JWT Token ✌️👏🏻

Saurabh.K

Finally the best video I got about JWT. Their a lot of confusion before . Thank you a lot

DeepakSingh-hfdx

very nice video, and detailed explanation.. superb

anjithhanumandla

very clear explanation Thanks a lot Manoj!!

srinivasanjayamohan

Everything is fine but in real time jwt token is generated in one api, and authorization done is another api, how to perform this sir, please reply me

Venkatesh_Averi

all thanksss tooo youuu bhaiayyaa... cannt sayyy it helpeeddd a lotttt .... u r the

manognyadasika

after searching many days i found good video on jwt token.

i have confusion:
1) you added issuer, audience, Key in appsetting.json file. when i build where can i get. can i use randomly?
2) if i did not use one mthod with authorize filter can i access directly without token or authentication/login?
3) why you used postman here. can not use swgger all time?

can you please explain?

sureshthaduri