# Supported key types for OpenSSL Dynamic Engine for AWS CloudHSM Client SDK 5
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The AWS CloudHSM OpenSSL Dynamic Engine supports the following key types with Client SDK 5.


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| Key Type | Description | 
| --- | --- | 
| EC | ECDSA sign/verify for P-256, P-384, and secp256k1 key types. To generate EC keys that are interoperable with the OpenSSL engine, see [Export an asymmetric key with CloudHSM CLI](cloudhsm_cli-key-generate-file.md). | 
| RSA | RSA key generation for 2048, 3072, and 4096-bit keys.RSA sign/verify. Verification is offloaded to OpenSSL software. |