BCryptDestroyHash function (bcrypt.h)

The BCryptDestroyHash function destroys a hash or Message Authentication Code (MAC) object.


NTSTATUS BCryptDestroyHash(
  [in, out] BCRYPT_HASH_HANDLE hHash


[in, out] hHash

The handle of the hash or MAC object to destroy. This handle is obtained by using the BCryptCreateHash function.

Return value

Returns a status code that indicates the success or failure of the function.

Possible return codes include, but are not limited to, the following.

Return code Description
The function was successful.
The algorithm handle in the hHash parameter is not valid.


Depending on what processor modes a provider supports, BCryptDestroyHash can be called either from user mode or kernel mode. Kernel mode callers can execute either at PASSIVE_LEVEL IRQL or DISPATCH_LEVEL IRQL. If the current IRQL level is DISPATCH_LEVEL, the handle provided in the hHash parameter must be derived from an algorithm handle returned by a provider that was opened by using the BCRYPT_PROV_DISPATCH flag.

To call this function in kernel mode, use Cng.lib, which is part of the Driver Development Kit (DDK). Windows Server 2008 and Windows Vista:  To call this function in kernel mode, use Ksecdd.lib.


Minimum supported client Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 [desktop apps | UWP apps]
Target Platform Windows
Header bcrypt.h
Library Bcrypt.lib
DLL Bcrypt.dll

See also