Cut and pasting the sample id token from the docs into jwt.ms shows the following: The differences between an id token and an access token start to make a lot more sense once you see them decoded and compare them. Both are JWTs, but have different “claims” and different purposes. What does a JSON Web Token look like in jwt.ms?įortunately the documentation contains a couple of different sample JWTs: an id token and an access token. You’ll see in a bit where the JWT is signed. > Because the JWTs issued by Azure AD B2C are signed but not encrypted > The claims in JWTs are JSON objects that are encoded and serialized for transmission. This is terminology that will make sense once you see a JWT decoded. The content that we’re interested in right now is called “claims”. > JWTs contain information known as claims. a string of numbers and letters) that when decoded will present data in JSON format. > A JWT is a compact, URL-safe means of transferring information between two parties.įirst, a JSON Web Token is a token (i.e. For more information about JWTs, refer to JWT specifications. Several tools are available that can do this, including jwt.ms. Because the JWTs issued by Azure AD B2C are signed but not encrypted, you can easily inspect the contents of a JWT to debug it. The claims in JWTs are JSON objects that are encoded and serialized for transmission. These are assertions of information about the bearer and the subject of the token. JWTs contain information known as claims. A JWT is a compact, URL-safe means of transferring information between two parties. Many of the tokens that Azure AD B2C issues are implemented as JSON web tokens (JWTs). Once I got a handle on what access tokens are used for, the next step became how do I know what is inside an access token? For example, is the app telling me that the user is unauthorized because they are not signed in? Or is it because a scope is missing or contains a typo in the access token? Tl dr The site allows you to decode tokens and the tokens never leave your browser.
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