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Software Development
by John
JSON Web Tokens, (JWT)
JWT (or JSON Web Token) is an encoding standard specified in RFC 7519 - JSON Web Token (JWT) (ietf.org) for tokens that contain a JSON payload.
JWT is a compact, self-contained means of securely transmitting information between parties. It consists of three parts: a header, a payload, and a signature. JWTs are commonly used in web authentication and authorization processes, as they can verify the integrity and authenticity of data, making them a fundamental tool in modern web applications and services.
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JWT (JSON Web Token) authentication is a compact, secure method for verifying user identity in web applications. It utilizes digitally signed tokens to grant and validate user access, enhancing security and efficiency.
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How does an API validate the JWT Bearer token without configuring a secret or a public key?
The authentication service will use the OIDC metadata endpoints to get the necessary information.
Steps:
- The OpenID Configuration is read first: https://{issuer}/.well-known/openid-configuration
- From there it will find the URL to the jwks_uri and then load that one: like https://{issuer}/.well-known/jwks.json
- The public key(s) are loaded from that document and used to verify the incoming JWT Bearer tokens
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