(Ruby) Verify XML Digital Signature

Verifies XML signatures in an XML file.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

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

sbXml = Chilkat::CkStringBuilder.new()
success = sbXml.LoadFile("qa_data/xml_dsig_verify/csioz_sample.xml","utf-8")
if (success != true)
    print "Failed to load XML file." + "\n";
    exit
end

dsig = Chilkat::CkXmlDSig.new()

# First load the XML containing the signatures to be verified.
success = dsig.LoadSignatureSb(sbXml)
if (success != true)
    print dsig.lastErrorText() + "\n";
    exit
end

# It's possible that an XML document can contain multiple signatures.
# Each can be verified as follows:
i = 0
while i < dsig.get_NumSignatures()
    # Select the Nth signature by setting the Selector property.
    dsig.put_Selector(i)

    # The bVerifyReferenceDigests argument determines if we want
    # to also verify each reference digest.  If set to false,
    # then only the SignedInfo part of the Signature is verified.
    bVerifyReferenceDigests = true
    bVerified = dsig.VerifySignature(bVerifyReferenceDigests)
    print "Signature " + (i + 1).to_s() + " verified = " + bVerified.to_s() + "\n";

    i = i + 1
end