I_IrmCrypt.HrDecrypt Method

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Accepts encrypted data and decrypts that data in place.

HRESULT HrDecrypt( 
    ULONG  ulOffset, 
    BYTE  *pbData, 
    DWORD  cbData, 
    DWORD *pcbData
) PURE;

Parameters

ulOffset

[in] Where in the block to start the decryption. Generally set to zero unless stream functions are decrypting portions of a block.

pbData

[in/out] The data to be decrypted.

cbData

[in] The amount, in bytes, of data to decrypt.

pcbData

[out] The amount of data that the function was actually able to decrypt. Under normal conditions, this is a DWORD whose value is equal to cbData.

Remarks

In general, this method is not called directly by the Information Rights Management (IRM) protector. Instead, this method is used by a stream operator, also written by the protector’s developer, which facilitates a higher level view of encrypting data.

See Also

Reference

I_IrmProtector Interface

I_IrmPolicyInfoRMS Class

I_IrmCrypt Class

Concepts

Information Rights Management in Windows SharePoint Services Overview

Custom IRM Protectors