JSON Web Key (JWK)

A JSON Web Key (JWK) is a standard format for representing cryptographic keys using JSON (JavaScript Object Notation). It allows organizations and systems to share and manage keys—such as those used for signing or encrypting data—in a structured, machine-readable way. JWKs include key details like type, usage, and the actual key data, making it easier to verify digital signatures or secure communications across different applications and platforms. Essentially, JWKs serve as digital "key cards," enabling secure and standardized exchange of cryptographic information within web-based identity and security systems.