CryptGetKeyIdentifierProperty function (wincrypt.h)
BOOL CryptGetKeyIdentifierProperty( [in] const CRYPT_HASH_BLOB *pKeyIdentifier, [in] DWORD dwPropId, [in] DWORD dwFlags, [in] LPCWSTR pwszComputerName, [in] void *pvReserved, [out] void *pvData, [in, out] DWORD *pcbData );
A pointer to the CRYPT_HASH_BLOB that contains the key identifier.
Identifies the property to retrieve. The value of dwPropId determines the type and content of the pvData parameter. Any certificate property ID can be used.
The following flags can be used. They can be combined with a bitwise-OR operation.
A pointer to the name of a remote computer to be searched. If CRYPT_KEYID_MACHINE_FLAG flag is set, searches the remote computer for a list of key identifiers. If the local computer is to be searched and not a remote computer, set pwszComputerName to NULL.
Reserved for future use and must be NULL.
A pointer to a buffer to receive the data as determined by dwPropId. Elements pointed to by fields in the pvData structure follow the structure. Therefore, the size contained in pcbData can exceed the size of the structure.
If dwPropId is CERT_KEY_PROV_INFO_PROP_ID, pvData points to a CRYPT_KEY_PROV_INFO structure that contains the property of the key identifier.
If dwPropId is not CERT_KEY_PROV_INFO_PROP_ID, pvData points to an array of bytes that contains the property of the key identifier.
To get the size of this information for memory allocation purposes, this parameter can be NULL when the CRYPT_KEYID_ALLOC_FLAG is not set. For more information, see Retrieving Data of Unknown Length.
When the CRYPT_KEYID_ALLOC_FLAG is set, pvData is the address of a pointer to the buffer that will be updated. Because memory is allocated and its pointer is stored at *pvData, pvData must not be NULL.
[in, out] pcbData
A pointer to a DWORD that contains the size, in bytes, of the buffer pointed to by the pvData parameter. When the function returns, the DWORD contains the number of bytes stored in the buffer. The size contained in the variable pointed to by pcbData can indicate a size larger than the CRYPT_KEY_PROV_INFO structure because the structure can contain pointers to auxiliary data. This size is the sum of the size needed by the structure and all auxiliary data.
When the CRYPT_KEYID_ALLOC_FLAG is set, pcbData is the address of a pointer to the DWORD that will be updated.
If the function succeeds, the function returns nonzero (TRUE).
If the function fails, it returns zero (FALSE). For extended error information, call GetLastError.
|Minimum supported client||Windows XP [desktop apps only]|
|Minimum supported server||Windows Server 2003 [desktop apps only]|