JavaScript

Verify XAdES with External File Reference

See more XML Digital Signatures Examples

Demonstrates how to validate an XML digital signature that contains a reference to an external file. (This is one way of doing it..) JavaScript

var success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// Load the XAdES file to be validated..
var sbXml = new CkStringBuilder();
success = sbXml.LoadFile("qa_data/xml_dsig_valid_samples/externalFile/test.pdf.XAdES","utf-8");
if (success == false) {
    console.log("Failed to load XAdES input file.");
    return;
}

var validator = new CkXmlDSig();

// Specify a set of absolute or relative directory paths to be searched for any external file references.
// Directory paths are separated by semicolon chars.
validator.ExternalRefDirs = "qa_data/externalFiles;qa_data/xml_dsig_valid_samples/externalFile;c:/someOtherDir";

success = validator.LoadSignatureSb(sbXml);
if (success == false) {
    console.log(validator.LastErrorText);
    return;
}

// Validate signatures as usual..
var i = 0;
while (i < validator.NumSignatures) {
    validator.Selector = i;

    var valid = validator.VerifySignature(true);
    console.log("Signature " + (i+1) + " and all reference digests OK = " + valid);

    i = i+1;
}