Ruby

Get Certificates within XML Signature

See more XML Digital Signatures Examples

Demonstrates how to get the certificates contained within an XML signature. Ruby

require 'chilkat'

success = false

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

sbXml = Chilkat::CkStringBuilder.new()

# Load XML containing one or more signatures.
success = sbXml.LoadFile("qa_data/xml_dsig_valid_samples/multipleSigners/sp.pdf.XAdES.xml","utf-8")
if (success == false)
    print "Failed to load the XML file.." + "\n";
    exit
end

dsig = Chilkat::CkXmlDSig.new()

# First load the XML containing the signatures to be verified.
# Note that this particular Signature already contains the RSA public key that will be used
# for verification.
success = dsig.LoadSignatureSb(sbXml)
if (success != true)
    print dsig.lastErrorText() + "\n";
    exit
end

# For each signature, verify and also get the certificate(s) contained within each Signature.
i = 0
saCerts = Chilkat::CkStringArray.new()
cert = Chilkat::CkCert.new()

print "numSignatures = " + dsig.get_NumSignatures().to_s() + "\n";

while i < dsig.get_NumSignatures()
    # Select the Nth signature by setting the Selector property.
    dsig.put_Selector(i)

    bVerifyReferenceDigests = true
    bVerified = dsig.VerifySignature(bVerifyReferenceDigests)
    print "Signature " + (i + 1).to_s() + " verified = " + bVerified.to_s() + "\n";

    # Get the certificates embedded in this signature.
    saCerts.Clear()
    success = dsig.GetCerts(saCerts)
    if (success == true)
        j = 0
        while j < saCerts.get_Count()
            success = cert.LoadFromBase64(saCerts.getString(j))
            if (success == true)
                print "    " + cert.subjectDN() + "\n";
            end

            j = j + 1
        end
    end

    i = i + 1
end