IWMDRMEncryptScatter::EncryptScatter method

Article
06/20/2023

[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The EncryptScatter method unscrambles and encrypts data.

Syntax

HRESULT EncryptScatter(
  [in]  DWORD                       cBlocks,
  [in]  WMDRM_ENCRYPT_SCATTER_BLOCK *rgBlocks,
  [in]  WMDRMCryptoData             *pWMCryptoData,
  [in]  DWORD                       cbOutput,
  [out] BYTE                        *pbOutput
);

Parameters

cBlocks [in]: Number of elements in the rgBlocks array.
rgBlocks [in]: Array of one or more WMDRM_ENCRYPT_SCATTER_BLOCK structures. Each element describes a block of data to be unscrambled and encrypted.
pWMCryptoData [in]: Pointer to a WMDRMCryptoData structure that contains encryption parameters. Set to NULL to use the default parameters.
cbOutput [in]: Size of the output data buffer passed as pbOutput.
pbOutput [out]: Output buffer.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.

Remarks

None.

Requirements

Requirement	Value
Header	Wmdrmsdk.h