1<?xml version="1.0"?>
2<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
3  <SignedInfo>
4    <ds:CanonicalizationMethod xmlns:ds="http://www.w3.org/2000/09/xmldsig#" Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
5    <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
6    <Reference URI="#ndid:1234-5678-0987">
7      <Transforms>
8        <Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
9      </Transforms>
10      <DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
11      <DigestValue>sj1VXDB2VMCU5qmva2OtDw3kKOs=</DigestValue>
12    </Reference>
13  </SignedInfo>
14  <SignatureValue>...</SignatureValue>
15  <KeyInfo>
16    <X509Data>
17      <X509Certificate>...</X509Certificate>
18    </X509Data>
19  </KeyInfo>
20</Signature>
21