PvkFreeCryptProv function


This API is deprecated. Microsoft may remove this API in future releases.


The PvkFreeCryptProv function releases the handle to a cryptographic service provider (CSP) and optionally deletes the temporary container created by the PvkGetCryptProv function.


This function has no associated header file or import library. To call this function, you must create a user-defined header file and use the LoadLibrary and GetProcAddress functions to dynamically link to Mssign32.dll.



void WINAPI PvkFreeCryptProv(
  _In_     HCRYPTPROV hProv,
  _In_     LPCWSTR    pwszCapiProvider,
  _In_     DWORD      dwProviderType,
  _In_opt_ LPWSTR     pwszTmpContainer


hProv [in]

A handle to the CSP.

pwszCapiProvider [in]

A pointer to a null-terminated string for the CSP name.

dwProviderType [in]

A DWORD value that represents the cryptographic provider type. For more information, see Cryptographic Provider Types.

pwszTmpContainer [in, optional]

A pointer to a null-terminated string for the temporary key container name.

Return value

This function does not return a value.


Requirement Value
Minimum supported client
Windows XP [desktop apps only]
Minimum supported server
Windows Server 2003 [desktop apps only]