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Gets the default digest method that will be used to compute digest values for objects to be signed.
Syntax
HRESULT GetDefaultDigestMethod(
[out, retval] LPWSTR *digestMethod
);
Parameters
[out, retval] digestMethod
A pointer to the default digest method, or the empty string "" if a default has not been set using the SetDefaultDigestMethod method.
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. |
|
The digestMethod parameter is NULL. |
Remarks
This method allocates memory used by the string returned in digestMethod. If the method succeeds, call the CoTaskMemFree function to free the memory.
To set the default digest method, call the IOpcSigningOptions::SetDefaultDigestMethod method.
Important The default digest method must be set before the signature is generated by calling the IOpcDigitalSignatureManager::Sign method.
Thread Safety
Packaging objects are not thread-safe.
For more information, see the Getting Started with the Packaging API.
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