IOpcSignatureReference::GetDigestValue method (msopc.h)
Gets the digest value that is calculated for the referenced XML element when the element is signed.
Syntax
HRESULT GetDigestValue(
[out] UINT8 **digestValue,
[out] UINT32 *count
);
Parameters
[out] digestValue
A pointer to a buffer that contains the digest value calculated using the specified digest method when the referenced XML element is signed.
[out] count
The size of the digestValue buffer.
If the referenced XML element has not been signed yet, count is 0.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
At least one of the digestValue, and count parameters is NULL. |
Remarks
This method allocates memory used by the buffer returned in digestValue. If the method succeeds, call the CoTaskMemFree function to free the memory.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 7 [desktop apps only] |
| Minimum supported server | Windows Server 2008 R2 [desktop apps only] |
| Target Platform | Windows |
| Header | msopc.h |
See also
Getting Started with the Packaging API
Overviews
Packaging API Programming Guide
Packaging Digital Signature Interfaces
Reference