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00:00 What are JWT claims?
00:42 Difference between a claim and a key value pair
02:07 public claims are claims with a predefined meaning
According to RFC-7519, a claim is a piece of information about a subject that is represented as a name/value pair consisting of a claim name and a claim value. Most people stumble about claims when they first start to look into JSON Web Tokens. Initially the name claim might be confusing because a claim just seems like a "normal" key value pair. People talk about claims nonetheless because we are not just talking about any key value pair, but about key value pairs that exist within the context of a security token. This security token can be MACed or digitally signed.
Claims are special key value pairs because they are statements made by whoever created the token about a particular subject. So using the term "claim" is just more precise than talking about key/value pairs.
