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(JavaScript) Create XML Digital Signature using HMAC Key
Demonstrates how to create an XML digital signature using an HMAC key.
var success = false;
// 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..
var url = "https://www.chilkatsoft.com/exampleData/flubberblub.xml";
var http = new CkHttp();
var sbXml = new CkStringBuilder();
success = http.QuickGetSb(url,sbXml);
if (success !== true) {
console.log(http.LastErrorText);
return;
}
var xmlSigGen = new CkXmlDSigGen();
// 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 !== true) {
console.log(xmlSigGen.LastErrorText);
return;
}
// Examine the signed XML:
console.log(sbXml.GetAsString());
// 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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