# Key storage provider (KSP) for AWS CloudHSM Client SDK 5
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 Key Storage Provider (KSP) is a cryptographic API specific to the Microsoft Windows operating system. Key Storage Provider (KSP) enables developers to use cryptographic techniques to secure Windows-based applications.

For information about bootstrapping, see [Connecting to the cluster](cluster-connect.md).

For information on using Client SDK 3, see [Using previous SDK version to work with AWS CloudHSM](choose-client-sdk.md).

**Topics**
+ [Install the Key storage provider (KSP) for AWS CloudHSM Client SDK 5](ksp-library-install.md)
+ [Authenticate to the Key storage provider (KSP) for AWS CloudHSM Client SDK 5](ksp-library-authentication.md)
+ [Supported key types for Key Storage Provider (KSP) for AWS CloudHSM Client SDK 5](ksp-library--key-types.md)
+ [Supported API operations Key storage provider (KSP) for AWS CloudHSM Client SDK 5](ksp-library-apis.md)
+ [Advanced configurations for KSP for AWS CloudHSM](ksp-library-configs.md)