Jakarta Security and REST on Cloud: Part 4 Combining JWT With OAuth2

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OAuth2 is undoubtedly one of the most famous security protocols today. One of its advantages is the non-exposure of sensitive information, such as user and password, consistently, as done by the BASIC mechanism. However, there is an increase in its complexity, especially when we talk about exchanging tokens, which do not have much use since it does not contain any information. However, we can make them have a little responsibility, such as transporting information safely. This post will talk a little about how to integrate OAuth2 with JWTs.
In part 3 of this series, we talked about the Oauth2 mechanism and the costs and benefits involving complexity and the possibility of not overexposing login and password data. One of the outstanding characteristics of this mechanism is found in the security communication from the token. Until then, it has only one use: Reference. This pointer works like a link. However, it does not have the information itself. It works as an Oauth2 mechanism. We send a token, which in turn is checked for existence in the database so that the user’s authentication information and respective credentials are searched. That is, the user’s entire state is in the bank.

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