2.2.7.1.2.1 DigestMethod Element

If a <Reference> element is present, the Signature <Digest> element MUST be present exactly once as a child element of the <Reference> element.

The <DigestMethod> element includes the hashing algorithm specified in the hashing algorithm property (PROPID_M_HASH_ALGor MSMQMessage.HashAlgorithm) of the message. The default digest method is the SHA1 algorithm.

 <DigestMethod Algorithm="http://www.w3.org/2000/02/xmldsig#sha1"></DigestMethod>