KEY4C V3.0 JWT HTTP REST API Service is a cloud-based security platform designed to simplify and strengthen JWT authentication for your applications.
With KEY4C, no need to manage cryptographic keys on your own servers.
Enjoy secure signing, rigorous token validation, improved performance, and a scalable architecture with all in one solution.
Start today and build a secure, efficient authentication system with ease.
> Free Trial: Generate up to 1,000 JWT tokens over 90 days at no cost.
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.
AWS Marketplace now accepts line of credit payments through the PNC Vendor Finance program. This program is available to select AWS customers in the US, excluding NV, NC, ND, TN, & VT.
Pricing is based on the duration and terms of your contract with the vendor, and additional usage. You pay upfront or in installments according to your contract terms with the vendor. This entitles you to a specified quantity of use for the contract duration. Usage-based pricing is in effect for overages or additional usage not covered in the contract. These charges are applied on top of the contract price. If you choose not to renew or replace your contract before the contract end date, access to your entitlements will expire.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
This listing has one pricing dimension based on requests to the JWT token generation service. You pay under a contract for access to generate signed JWT tokens. Pricing scales with the number of requests you make. The service handles token signing on the vendor's side, while your applications verify tokens locally using a public key. There are no separate tiers or instance sizes to choose from. You commit to a contract term and use the service as needed within that agreement.
Top-of-mind questions for buyers
What counts as one request for billing on the JWT service?
A request is a single call to the service to generate a signed JWT token. Signing happens inside the vendor's hardware security module, and the signed token is returned to your Agent. Your applications then verify tokens locally with a public key, so verification does not count as a billed request.
Does my cost rise as my application handles more logins or token traffic?
Yes. You pay per request to generate a signed token, so cost scales with how many tokens you issue. Local verification by your applications uses the public key and does not require calls to the service, so verification volume does not add to your request count.
Do I need to manage or store signing keys myself under this contract?
No. Signing keys are generated and stored inside the vendor's hardware security module and never leave it. You do not run signing logic or manage keys on your servers. Your application requests the public key once and uses it for local token verification.
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Vendor refund policy
You can cancel your Key4C service at any time.
For monthly plans, we will refund the remaining amount after deducting the fee based on the number of days used.
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phone: +82 70-7510-1001
Support hours: Monday to Friday, 9AM to 6PM (KST)
Response time: Within 1 business day
Languages supported: English, Korean
We provide assistance with installation, integration, and product usage.
Enterprise support plans are available upon request.
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.
Cloud-optimized. Easy deployment. Secure DEK encryption over trusted channels. HSM-based key protection. Compliant with ISMS-P, GDPR, and global security standards.
> Free Trial: Generate up to 1,000 K8s keys over 90 days at no cost.
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