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(PHP Extension) Encrypting and Decrypting ContentDemonstrates how to encrypt and decrypt the content of an XML node using 128-bit CBC AES encryption. The input XML, available at http://www.chilkatsoft.com/data/fox.xml, is this: <root> <fox1>The quick brown fox jumps over the lazy dog</fox1> <fox2>The quick brown fox jumps over the lazy dog <child1>ABC</child1> <child2>XYZ</child2> </fox2> </root>
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); $xml = new CkXml(); // The sample input XML is available at http://www.chilkatsoft.com/data/fox.xml $success = $xml->LoadXmlFile('fox.xml'); if ($success != true) { print $xml->lastErrorText() . "\n"; exit; } // Navigate to the "fox1" node, which is the 1st child: $success = $xml->FirstChild2(); // Encrypt the content: $success = $xml->EncryptContent('myPassword'); // Navigate back to the root: $xml->GetRoot2(); // Examine the new XML document: print $xml->getXml() . "\n"; // This is the XML w/ the encrypted content: // <root> // <fox1>1hTtf7XmO+78H+OIr5eWHIuXxP78KPeYrZbsD0HX4negO9ZRqYMBY4s46sPNp+Q+ // </fox1> // <fox2>The quick brown fox jumps over the lazy dog // <child1>ABC</child1> // <child2>XYZ</child2> // </fox2> // </root> // Now decrypt and show that the original content was restored: $success = $xml->FirstChild2(); $success = $xml->DecryptContent('myPassword'); $xml->GetRoot2(); print $xml->getXml() . "\n"; // Now encrypt the content of the "fox2" node. // First navigate to the "fox2" child. $success = $xml->FindChild2('fox2'); $success = $xml->EncryptContent('myPassword'); $xml->GetRoot2(); print $xml->getXml() . "\n"; // This is the XML w/ the "fox2" encrypted content: // <root> // <fox1>The quick brown fox jumps over the lazy dog</fox1> // <fox2>1hTtf7XmO+78H+OIr5eWHIuXxP78KPeYrZbsD0HX4negO9ZRqYMBY4s46sPNp+Q+ // // <child1>ABC</child1> // <child2>XYZ</child2> // </fox2> // </root> // Notice that the *content* of the node is encrypted. The child nodes are NOT encrypted. // This is intentional. To encrypt the content + the subtrees rooted at a given node, // one would call ZipTree to transform the content and subtrees // to Base64-encoded compressed content, and then call // EncryptContent to encrypt. // Finally, decrypt the "fox2" content: $success = $xml->FindChild2('fox2'); $success = $xml->DecryptContent('myPassword'); $xml->GetRoot2(); print $xml->getXml() . "\n"; ?> |
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