# Use the OpenSSL Dynamic Engine for AWS CloudHSM Client SDK 3
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To use the AWS CloudHSM dynamic engine for OpenSSL from an OpenSSL-integrated application, ensure that your application uses the OpenSSL dynamic engine named `cloudhsm`. The shared library for the dynamic engine is located at `/opt/cloudhsm/lib/libcloudhsm_openssl.so`.

To use the AWS CloudHSM dynamic engine for OpenSSL from the OpenSSL command line, use the `-engine` option to specify the OpenSSL dynamic engine named `cloudhsm`. For example:

```
$ openssl s_server -cert <server.crt> -key <server.key> -engine cloudhsm
```