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BCryptDestroyHash function (bcrypt.h)

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

Syntax

NTSTATUS BCryptDestroyHash(
  [in, out] BCRYPT_HASH_HANDLE hHash
);

Parameters

[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
STATUS_SUCCESS
 The function was successful.
STATUS_INVALID_HANDLE
 The algorithm handle in the hHash parameter is not valid.

Remarks

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.

Requirements

Requirement Value
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

BCryptCreateHash