JJWT: Java Library for Creating and Verifying JWTs and JWKs

JJWT is an open-source Java library for creating and verifying JSON Web Tokens (JWT) and JSON Web Keys (JWK). It is maintained by the community and implements the IETF JOSE specifications, including RFCs 7515 to 7519. The library supports generating signed (JWS) and encrypted (JWE) tokens, as well as handling keys in the JWK format. It is written entirely in Java with no mandatory external dependencies, making it suitable for both Java and Android applications. It is licensed under Apache 2.0. To use it in Maven projects, you include the jjwt-api dependency, along with optional modules like jjwt-impl or jjwt-jackson depending on your needs.  

https://github.com/jwtk/jjwt

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