Extending XSLT to Encrypt XML on the Fly: Code

<?xml version="1.0" encoding="UTF-8"?>
<customer_order>
  <items>
    <item>
      <name>Turnip Twaddler</name>
      <qty>3</qty>
      <price>9.95</price>
    </item>
    <item>
      <name>Snipe Curdler</name>
      <qty>1</qty>
      <price>19.95</price>
    </item>
  </items>
  <customer>
    <name>Doug Tidwell</name>
    <street>1234 Main Street</street>
    <city state="NC">Raleigh</city>
    <zip>11111</zip>
  </customer>
  <EncryptedData xmlns="http://www.w3.org/2000/11/temp-xmlenc" Type="Element">
    <EncryptedKey>
      <EncryptionMethod Algorithm="urn:rsadsi-com:rsa-v1.5"/>
      <KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
        <KeyName>key</KeyName>
      </KeyInfo>
      <CipherText>
        ea4AitUaQUmCG1RYRfnRGdgfbrf2OQPSvG00pD8eiIJQNbsm89kiuGN9YvMk3ZYUygADuhZ6ydsa
        PdWLnGpvrI6esYm+Q1nyo4C5AQwxvGAjU5F8RR4Konw/xcIhk+nxbzV11UJLH+u6Mgazv5VdjKvU
        TUdFQiBgOIiIYzrh5Ds=
      </CipherText>
    </EncryptedKey>
    <EncryptionMethod Algorithm="urn:nist-gov:tripledes-ede-cbc">
      <IV>RbGe9Ir5lwU=</IV>
    </EncryptionMethod>
    <CipherText>
      DuOqHnfWpdc58HEfKkY/abIy6V4Qa36J2UGDy2wSDwFd6w3b1HWMMlUD97Nb4pmmlwhFiqEOi4Gu
      o+5WwuLc0nUDr1PeOxyrJv2AN9Ef1Lusdt7D8iD+OBiiI51u+QJ7TzzoF1iwqLOyNK2PbmofdqaX
      kzFlRc1wywDigfQBv3NORfEk7AZM6sxpLxSyFCdVycBMHqCS5mZJk+F5VvT57OH0OUZwwZtRV5uZ
      teTrHWuPRMFH5RreVg==
    </CipherText>
  </EncryptedData>
</customer_order>  

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