Key4C V3.0 JWT HTTP REST API Service

Key4C V3.0 JWT HTTP REST API Service is a cloud-native platform that simplifies and strengthens JWT-based authentication across modern applications and microservices.

JWT (JSON Web Token) is widely used for stateless authentication between clients and servers in web, mobile, and serverless environments. However, when implemented without the proper safeguards, JWT can introduce critical vulnerabilities, such as:

• Tokens without signature validation (e.g., alg: none)
• Claim exposure due to plain Base64 encoding
• Hardcoded or exposed signing keys within application code
• Inadequate expiration controls that allow token reuse
• Missing claim validation, leading to privilege escalation
• Use of the same key for signing and verification, increasing system-wide risk if compromised

Key4C helps eliminate these risks by introducing a hardened, centralized JWT management layer:

• No key exposure: Signing keys are never stored on your servers. Instead, all key operations occur within secure HSM-backed environments.
• Easy integration: Sign and validate tokens through a REST API, with zero signing logic needed on your application server.
• Centralized management: Manage keys and configurations via an intuitive web console, with automated expiration and rotation.
• Robust validation: Short-lived tokens, public-key-based verification, claim-level validation, and token invalidation help ensure tokens are not able be reused or forged.