Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
PvkPrivateKeyAcquireContextFromMemory
Collapse the table of content
Expand the table of content

PvkPrivateKeyAcquireContextFromMemory function

The PvkPrivateKeyAcquireContextFromMemory function creates a temporary container in the cryptographic service provider (CSP) and loads a private key from memory into the container.

Note  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.
 

Syntax


BOOL WINAPI PvkPrivateKeyAcquireContextFromMemory(
  _In_        LPCWSTR    pwszProvName,
  _In_        DWORD      dwProvType,
  _In_        BYTE       *pbData,
  _In_        DWORD      cbData,
  _In_        HWND       hwndOwner,
  _In_        LPCWSTR    pwszKeyName,
  _Inout_opt_ DWORD      *pdwKeySpec,
  _Out_       HCRYPTPROV *phCryptProv,
  _Out_       LPTSTR     *ppwszTmpContainer
);

Parameters

pwszProvName [in]

A pointer to a null-terminated string that contains the name of the CSP whose type is requested in dwProvType.

dwProvType [in]

A DWORD value for the CSP type. For more information about CSP types, see Cryptographic Provider Types.

pbData [in]

A pointer to a buffer to receive the context data. The caller must provide this resource.

cbData [in]

A DWORD value that specifies the size, in bytes, of the pbData buffer. The caller must provide this value.

hwndOwner [in]

If a password is required to decrypt the context data pointed to by the pbData parameter, this parameter is a handle to the parent of the dialog box; otherwise, it is NULL.

pwszKeyName [in]

A pointer to a null-terminated string that contains the name of the key to retrieve.

pdwKeySpec [in, out, optional]

A pointer to a DWORD value that specifies the type of key. Possible values include AT_KEYEXCHANGE or AT_SIGNATURE.

phCryptProv [out]

A pointer to a handle for the CSP.

ppwszTmpContainer [out]

The address of a pointer to a null-terminated string for the temporary container name. The PvkPrivateKeyAcquireContextFromMemory function provides the buffer for this string and initializes it. When calling PvkPrivateKeyAcquireContextFromMemory, the address should point to a NULL value.

Return value

Upon success, this function returns TRUE. The PvkPrivateKeyAcquireContextFromMemory function returns FALSE if it fails.

Requirements

Minimum supported client

Windows XP [desktop apps only]

Minimum supported server

Windows Server 2003 [desktop apps only]

DLL

Mssign32.dll

 

 

Community Additions

ADD
Show:
© 2015 Microsoft