PFND3DDDI_GETENCRYPTIONBLTKEY callback function (d3dumddi.h)

The GetEncryptionBltKey function returns the key that is used to decrypt the data that the driver's EncryptionBlt function returns.

Syntax

PFND3DDDI_GETENCRYPTIONBLTKEY Pfnd3dddiGetencryptionbltkey;

HRESULT Pfnd3dddiGetencryptionbltkey(
  HANDLE hDevice,
  const D3DDDIARG_GETENCRYPTIONBLTKEY *unnamedParam2
)
{...}

Parameters

hDevice

A handle to the display device (graphics context).

unnamedParam2

pData [in, out]

A pointer to a D3DDDIARG_GETENCRYPTIONBLTKEY structure that describes the key for an encrypted session.

Return value

GetEncryptionBltKey returns one of the following values:

Remarks

The hardware and driver can optionally support the GetEncryptionBltKey function for all crypto types.

Each time the Direct3D runtime calls the driver's GetEncryptionBltKey function, the driver should generate a new read-back key. If the driver's CreateCryptoSession function previously created the encryption session with the CryptoType member of the D3DDDIARG_CREATECRYPTOSESSION structure set to D3DCRYPTOTYPE_AES128_CTR, the driver and hardware should encrypt the read-back key with the session key.

Requirements

See also

CreateCryptoSession

D3DDDIARG_CREATECRYPTOSESSION

D3DDDIARG_GETENCRYPTIONBLTKEY

EncryptionBlt