IOpcSigningOptions::SetSignatureMethod method

Sets the signature method to use to calculate and encrypt the hash value of the SignedInfo element, which will be contained in the SignatureValue element of the signature.

Syntax

HRESULT SetSignatureMethod(
  [in] LPCWSTR signatureMethod
);

Parameters

signatureMethod [in]

The signature method to use.

Return value

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

Remarks

To access the signature method before the signature is generated, call the IOpcSigningOptions::GetSignatureMethod. To access the signature method after the signature is generated, call the IOpcDigitalSignature::GetSignatureMethod method.

When a signature is generated it is serialized as signature markup. The signature method is used to calculate the value in the SignatureValue element in the signature markup.

When a signature is validated, the signature method is used to recalculate that value, and the recalculated value is compared to the value in the SignatureValue element in the signature markup.

Thread Safety

Packaging objects are not thread-safe.

For more information, see the Getting Started with the Packaging API.

Requirements

See also

IOpcSigningOptions

Overviews

Getting Started with the Packaging API

Packaging API Programming Guide

Reference

IOpcDigitalSignature

Core Packaging Interfaces

Packaging Digital Signature Interfaces

Packaging Interfaces

Packaging API Reference

Packaging API Samples