> For the complete documentation index, see [llms.txt](https://docs.hyperswitch.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hyperswitch.io/self-hosting/hyperswitch-open-source/deploy-hyperswitch-on-aws/component-wise-deployment/deploy-card-vault.md).

# Deploy Card Vault

The Juspay Hyperswitch Card Vault [(Repo Link)](https://github.com/juspay/tartarus), is a highly performant and secure locker to save sensitive data such as payment card details, bank account details etc.

It is designed in a polymorphic manner to handle and store any type of sensitive information making it highly scalable with extensive coverage of payment methods and processors.

Tartarus is built with a GDPR compliant personal identifiable information (PII) storage and secure encryption algorithms to be fully compliant with PCI DSS requirements.

### How does it work?

* The Juspay Hyperswitch application communicates with Tartarus via a middleware.
* All requests and responses to and from the middleware are signed and encrypted with the JWS and JWE algorithms.
* The locker supports CRD APIs on the /data and /cards endpoints - [API Reference](https://api-reference.hyperswitch.io/api-reference/cards/add-data-in-locker)
* Cards are stored against the combination of merchant and customer identifiers.
* Internal hashing checks are in place to avoid data duplication.

### Key Hierarchy

Master Key - AES generated key to that is encrypted/decrypted by the custodian keys to run the locker and associated configurations.

Custodian Keys - AES generated key that is used to encrypt and decrypt the master key. It is broken into two keys (`key 1` and `key 2`) and available with two custodians to enhance security.

### Setting up your Card Vault

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th data-hidden></th><th data-hidden></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Automated deployment of Card Vault as a standalone component</strong></td><td></td><td></td><td></td><td><a href="/pages/i2omwAVWBHnWjUTqmEHZ">/pages/i2omwAVWBHnWjUTqmEHZ</a></td></tr><tr><td><strong>Manual setup of the card vault on AWS</strong></td><td></td><td></td><td></td><td><a href="/pages/6K6qCkPHtOCIJvLtPzUd">/pages/6K6qCkPHtOCIJvLtPzUd</a></td></tr></tbody></table>


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