> ## Documentation Index
> Fetch the complete documentation index at: https://docs.futurex.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Certificate Authority

> Conceptual overview of Certificate Authorities and their role in securing communication through digital certificates.

A Certificate Authority (CA) is an entity that stores, signs, and issues digital certificates. It secures communication between devices by using signatures and public keys, allowing the receiving party to confirm the validity of the content they receive.

## CA integrations

In a Public Key Infrastructure (PKI), a CA is critical for managing digital certificates and ensuring the authenticity and security of communications and transactions. Integrating systems with a CA provides a framework for managing the lifecycle of digital certificates, from issuance to revocation.

CA integrations handle several important tasks, including:

* **Generating key pairs:** Create cryptographic key pairs for secure communications.
* **Issuing certificates:** Sign and issue digital certificates to verify identities.
* **Distributing a certificate directory:** Maintain a repository of issued certificates.
* **Revoking invalid certificates:** Revoke certificates that are no longer valid or trusted.
* **Publishing certificate revocation lists (CRL):** Provide lists of revoked certificates for reference.
* **Destroying keying material:** Safely destroy cryptographic keys when they are no longer needed.
* **Ensuring compliance:** Adhere to industry standards and regulatory requirements for certificate management.

## Integration guides

The following guide gives detailed instructions and best practices for integrating CryptoHub with a CA:

[**Smallstep step-ca**](/Integrations/CryptoHub-7.3/Certificate_Authority/Smallstep_step-ca/Smallstep_step-ca)