Secure XML: The New Syntax for Signatures and Encryption

15.3. Encryption Examples

The following examples are based on a hypothetical medical patient record:

<MedInfo xmlns='http://x.example/medinfo'>
  <Identification>
    <Name>John Q. Doe, Jr<Name/>
    <Address>...</Address><SSN>000-00-0000</SSN>
  </Identification>
  <Medical>...</Medical>
  <Financial>
    <Insurance>...</Insurance>
    <Billing>...History...</Billing>
    <Payment>
      <Type>CreditCard</Type>
      <Number>0000 1111 2222 3333</Number>
      <Expires>04/02</Expires>
    </Payment>
  </Financial>
</MedInfo>

This XML contains information characterized by different levels of sensitivity and to which different people probably have different access permissions. For example, a person's name and address is usually considered less sensitive than his or her financial information, which ...