: A string identifying the provider to open. Common values include MS_KEY_STORAGE_PROVIDER (the default software-based provider) or MS_SMART_CARD_KEY_STORAGE_PROVIDER for hardware-backed keys. If this is NULL , the default provider is loaded.
Developers, sysadmins, and privacy-focused users managing sensitive data. ncryptopenstorageprovider
If the KeyIso service is restarted while your application is still running, that cached handle becomes invalid. : A string identifying the provider to open