Encrypt XML Subtree

Encrypt an entire subtree within an XML document

Download Chilkat Python Library

import chilkat


xml = chilkat.CkXml()

#  First, build a sample XML document:

xml = chilkat.CkXml()

xml.put_Tag("stocks")

xmlM = xml.NewChild("Microsoft","")
xmlM.NewChild2("symbol","MSFT")
xmlM.NewChild2("recentPrice","34.50")

xmlG = xml.NewChild("Google","")
xmlG.NewChild2("symbol","GOOG")
xmlG.NewChild2("recentPrice","679.00")

#  Display the unencrypted XML:
print xml.getXml()

#  This is the XML displayed:
#  <stocks>
#      <Microsoft>
#          <symbol>MSFT</symbol>
#          <recentPrice>34.50</recentPrice>
#      </Microsoft>
#      <Google>
#          <symbol>GOOG</symbol>
#          <recentPrice>679.00</recentPrice>
#      </Google>
#  </stocks>

#  The goal is to encrypt the "Microsoft" sub-tree.
#  The EncryptContent method encryptes the content
#  within a single XML node (not an entire sub-tree).
#  Therefore, to encrypt a sub-tree,  you must first
#  compress it into a single node, and then encrypt it.
xmlM.ZipTree()

#  Now encrypt the content using 128-bit AES encryption:
xmlM.EncryptContent("secretPassword")

#  Display the XML with the encrypted sub-tree:
print xml.getXml()

#  This is displayed:
#  <stocks>
#      <Microsoft><![CDATA
#  [JkiMcoK3Mi198rT30KvicDEzu5WuJgMH+8KS0UZbcRE
#  2CtdXplphV0iCdPMYnS01O6Ly6S4QCQSReMCshG/V3
#  8btJIZv/VLG9JZRsQk0bBafMhx7B2fQfm8YENke/JIM
#  ]]>    </Microsoft>
#      <Google>
#          <symbol>GOOG</symbol>
#          <recentPrice>679.00</recentPrice>
#      </Google>
#  </stocks>

#  Now decrypt and unzip:
xmlM.DecryptContent("secretPassword")

success = xmlM.UnzipTree()
if (success != True):
    print "Failed to unzip tree"

#  Display the restored document:
print xml.getXml()