# OpenSSL Provider for AWS CloudHSM Client SDK 5
<a name="openssl-provider-library"></a>

The AWS CloudHSM OpenSSL Provider allows you to offload TLS cryptographic operations to your CloudHSM cluster through the OpenSSL Provider API. The Provider interface is the recommended approach for new deployments using OpenSSL 3.2 and later.

Use the following sections to install and configure the AWS CloudHSM OpenSSL Provider, using Client SDK 5.

**Warning**  
 Integration with OpenSSL CLI is not currently supported by AWS CloudHSM OpenSSL Provider. See [AWS CloudHSM SSL/TLS offload on Linux using NGINX or HAProxy with OpenSSL Provider](third-offload-linux-openssl-provider.md) for supported integrations. 

## Supported platforms
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The OpenSSL Provider requires OpenSSL 3.2 or later, available on EL9\$1, Ubuntu 24.04\$1, and Amazon Linux 2023\$1.

Verify compatibility: `openssl version`

**Topics**
+ [Supported platforms](#openssl-provider-supported-platforms)
+ [Install the OpenSSL Provider for AWS CloudHSM Client SDK 5](openssl-provider-install.md)
+ [Supported key types for OpenSSL Provider for AWS CloudHSM Client SDK 5](openssl-provider-key-types.md)
+ [OpenSSL Provider Supported Mechanisms](openssl-provider-mechanisms.md)
+ [OpenSSL Provider Advanced Configuration](openssl-provider-advanced-config.md)