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(PHP ActiveX) Create XML Digital Signature using HMAC KeyDemonstrates how to create an XML digital signature using an HMAC key.
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Signs the following XML using an HMAC key. // <?xml version="1.0" encoding="UTF-8" standalone="no"?> // <collection Id="root"> // <album> // <title>Questions, unanswered</title> // <artist>Steve and the flubberblubs</artist> // <year>1989</year> // <t:tracks xmlns:t="http://test.xades4j/tracks"> // <t:song length="4:05" tracknumber="1"> // <t:title>What do you know?</t:title> // <t:artist>Steve and the flubberblubs</t:artist> // <t:lastplayed>2006-10-17-08:31</t:lastplayed> // </t:song> // <t:song length="3:45" tracknumber="2"> // <t:title>Who do you know?</t:title> // <t:artist>Steve and the flubberblubs</t:artist> // <t:lastplayed>2006-10-17-08:35</t:lastplayed> // </t:song> // <t:song length="5:14" tracknumber="3"> // <t:title>When do you know?</t:title> // <t:artist>Steve and the flubberblubs</t:artist> // <t:lastplayed>2006-10-17-08:39</t:lastplayed> // </t:song> // <t:song length="4:19" tracknumber="4"> // <t:title>Do you know?</t:title> // <t:artist>Steve and the flubberblubs</t:artist> // <t:lastplayed>2006-10-17-08:44</t:lastplayed> // </t:song> // </t:tracks> // </album> // </collection> // // The above XML is available at https://www.chilkatsoft.com/exampleData/flubberblub.xml // Fetch the XML and then sign it.. $url = 'https://www.chilkatsoft.com/exampleData/flubberblub.xml'; // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http') $http = new COM("Chilkat.Http"); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbXml = new COM("Chilkat.StringBuilder"); $success = $http->QuickGetSb($url,$sbXml); if ($success != 1) { print $http->LastErrorText . "\n"; exit; } // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.XmlDSigGen') $xmlSigGen = new COM("Chilkat.XmlDSigGen"); // The Signature will be inserted under the "collection" element. $xmlSigGen->SigLocation = 'collection'; // Sign everything in <collection Id="root"> ... </collection> $xmlSigGen->AddSameDocRef('root','sha256','C14N','',''); // Specify the HMAC key. // For example, if the HMAC key is to be the us-ascii bytes of the string "secret", // the HMAC key can be set in any of the following ways (and also more ways not shown here..) $xmlSigGen->SetHmacKey('secret','ascii'); // or $xmlSigGen->SetHmacKey('c2VjcmV0','base64'); // or $xmlSigGen->SetHmacKey('736563726574','hex'); // Sign the XML.. $success = $xmlSigGen->CreateXmlDSigSb($sbXml); if ($success != 1) { print $xmlSigGen->LastErrorText . "\n"; exit; } // Examine the signed XML: print $sbXml->getAsString() . "\n"; // The output is: // // <?xml version="1.0" encoding="UTF-8" standalone="no"?> // <collection Id="root"> // <album> // <title>Questions, unanswered</title> // <artist>Steve and the flubberblubs</artist> // <year>1989</year> // <t:tracks xmlns:t="http://test.xades4j/tracks"> // <t:song length="4:05" tracknumber="1"> // <t:title>What do you know?</t:title> // <t:artist>Steve and the flubberblubs</t:artist> // <t:lastplayed>2006-10-17-08:31</t:lastplayed> // </t:song> // <t:song length="3:45" tracknumber="2"> // <t:title>Who do you know?</t:title> // <t:artist>Steve and the flubberblubs</t:artist> // <t:lastplayed>2006-10-17-08:35</t:lastplayed> // </t:song> // <t:song length="5:14" tracknumber="3"> // <t:title>When do you know?</t:title> // <t:artist>Steve and the flubberblubs</t:artist> // <t:lastplayed>2006-10-17-08:39</t:lastplayed> // </t:song> // <t:song length="4:19" tracknumber="4"> // <t:title>Do you know?</t:title> // <t:artist>Steve and the flubberblubs</t:artist> // <t:lastplayed>2006-10-17-08:44</t:lastplayed> // </t:song> // </t:tracks> // </album> // <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#hmac-sha256"/><ds:Reference URI="#root"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>rD/g8soqKz8EiPUBhEWfcQacS0ta4ULHX3dKMEH6ZoQ=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>R8dXP95VRYJBfL6d0Peogybdk27+R+JIfX8jnVu0NOI=</ds:SignatureValue></ds:Signature></collection> // ?> |
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