# Supported mechanisms for OpenSSL Dynamic Engine for AWS CloudHSM Client SDK 5
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The AWS CloudHSM OpenSSL Dynamic Engine supports the following mechanisms for Sign and Verify functions with Client SDK 5.

## Sign and verify functions
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With Client SDK 5, the data is hashed locally in software. This means there is no limit on the size of the data that can be hashed.

RSA Signature Types
+ SHA1withRSA
+ SHA224withRSA
+ SHA256withRSA
+ SHA384withRSA
+ SHA512withRSA

ECDSA Signature Types
+ SHA1withECDSA
+ SHA224withECDSA
+ SHA256withECDSA
+ SHA384withECDSA
+ SHA512withECDSA