Jwt

JSON Web Tokens (JWT) have become a standard method for securely transmitting information between parties as a JSON object. They are widely used in modern identity and access management solutions to carry claims and authorize users. However, correctly decoding and validating JWTs is critical to maintaining security. This article explains the difference between decoding and validation, walks through secure JWT signature verification, and provides best practices for safe JWT handling. ...

JSON Web Tokens (JWT) have become the backbone of modern OAuth 2.0 and OpenID Connect (OIDC) authentication, carrying identity and authorization claims securely between parties. Proper decoding and validation of JWTs are critical to maintaining the security of your applications. What is a JWT? A JWT is a compact, URL-safe token consisting of three parts: Header: Specifies the token type and signing algorithm. Payload: Contains claims about the user or system (e.g., user ID, roles). Signature: Verifies token integrity and authenticity. Example JWT: ...

OAuth 2.0 and OpenID Connect are foundational protocols for modern authentication and authorization. This cluster covers key topics including authorization code flow, PKCE security enhancements, JWT usage, and implicit flow, helping you fully understand use cases and practical implementation details. Related Articles Client Credentials Flow in OAuth 2.0: Complete Guide with Real-World Examples Authorization Code Flow vs Implicit Flow: Which One Should You Use? Understanding the Authorization Code Flow in OAuth 2.0 How PKCE Enhances Security in Authorization Code Flow Implementing JWT Bearer Token Grant with ForgeRock: A Practical Guide Understanding Client Credentials Flow in OAuth 2.0: Use Cases and Implementation OAuth 2.0 vs OIDC: Understanding the Key Differences and When to Use Each Implementing Fine-Grained Access Control with JWT JWT Decoding and Validation: Essential Practices for Secure OAuth 2.0 Implementations Stay tuned for the latest deep dives and practical guides on OAuth 2.0 and OpenID Connect. ...

In today’s interconnected digital landscape, APIs (Application Programming Interfaces) are the backbone of modern applications, enabling seamless communication between systems. However, as APIs become more integral to business operations, they also become prime targets for cyberattacks. Securing APIs is no longer optional—it’s a critical necessity. This is where ForgeRock Identity Gateway (FIG) comes into play. FIG is a robust solution designed to secure APIs, enforce authentication, and manage authorization, ensuring that only authorized users and applications can access sensitive resources. ...

JSON Web Tokens (JWT) are widely used for securing APIs and managing identity and access. While their primary role is to authenticate users, JWTs can also support fine-grained authorization — making it possible to control access down to the resource, action, or field level. This blog explores how to implement permission granularity using JWT in a secure and scalable way. What Is Fine-Grained Access Control? Fine-grained access control (FGAC) goes beyond coarse rules like “admin vs user” roles. It enables you to define access at the level of: ...