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Do you really know JWT? by Karim Pinchon
Explore the ins and outs of JSON Web Tokens (JWT), a standard for secure claims representation, and learn best practices for implementation in APIs, web apps, and microservices.
- JWT is a standard for representing claims securely between two parties.
- JWT consists of three parts: header, payload, and signature.
- The header contains the algorithm used for signing and encoding.
- The payload contains the claims or data to be transferred.
- The signature is generated using a private key and used to verify the token.
- JWT is used for authentication, authorization, and cryptography.
- Symmetric and asymmetric algorithms are used for signing and encryption.
- JWT has two implementations: JSON Web Signature (JWS) and JSON Web Encryption (JWE).
- JWS is used for signing and authentication, while JWE is used for encryption and confidentiality.
- JWT is used in APIs, web applications, and microservices.
- JWT has security vulnerabilities, such as unsecured tokens, token tampering, and brute-force attacks.
- Best practices for using JWT include using symmetric and asymmetric algorithms, validating the signature, and keeping the token compact.
- JWT can be used for authentication, authorization, and cryptography.
- JWT is used in OAuth2 and OpenID Connect.