(Ruby) Create JPK_VAT XaDES-BES Signed XML

Demonstrates how to sign XML for JPK_VAT.

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.

# This example will sign the following XML document:

# <?xml version="1.0" encoding="utf-8"?>
# <InitUpload xmlns="http://e-dokumenty.mf.gov.pl">
#     <DocumentType>JPK</DocumentType>
#     <Version>01.02.01.20160617</Version>
#     <EncryptionKey algorithm="RSA" encoding="Base64" mode="ECB" padding="PKCS#1">...</EncryptionKey>
#     <DocumentList>
#         <Document>
#             <FormCode schemaVersion="1-1" systemCode="JPK_VAT (3)">JPK_VAT</FormCode>
#             <FileName>JPK_VAT_3_v1-1_20181208.xml</FileName>
#             <ContentLength>8736</ContentLength>
#             <HashValue algorithm="SHA-256" encoding="Base64">JEEI1pItwh6dj/Xe1uts/x61qnjZ4DLHpkRMhmf1oQQ=</HashValue>
#             <FileSignatureList filesNumber="1">
#                 <Packaging>
#                     <SplitZip mode="zip" type="split"/>
#                 </Packaging>
#                 <Encryption>
#                     <AES block="16" mode="CBC" padding="PKCS#7" size="256">
#                         <IV bytes="16" encoding="Base64">FFsCRAPYJD3J6cRvd44UDA==</IV>
#                     </AES>
#                 </Encryption>
#                 <FileSignature>
#                     <OrdinalNumber>1</OrdinalNumber>
#                     <FileName>JPK_VAT_3_v1-1_20181208-000.xml.zip.aes</FileName>
#                     <ContentLength>16</ContentLength>
#                     <HashValue algorithm="MD5" encoding="Base64">BX2DTD3ASC/zF6aq/012Cg==</HashValue>
#                 </FileSignature>
#             </FileSignatureList>
#         </Document>
#     </DocumentList>
# </InitUpload>

# First we build the XML to be signed.
# 
# Use this online tool to generate the code from sample XML: 
# Generate Code to Create XML

success = true
xmlToSign = Chilkat::CkXml.new()
xmlToSign.put_Tag("InitUpload")
xmlToSign.AddAttribute("xmlns","http://e-dokumenty.mf.gov.pl")
xmlToSign.UpdateChildContent("DocumentType","JPK")
xmlToSign.UpdateChildContent("Version","01.02.01.20160617")
xmlToSign.UpdateAttrAt("EncryptionKey",true,"algorithm","RSA")
xmlToSign.UpdateAttrAt("EncryptionKey",true,"encoding","Base64")
xmlToSign.UpdateAttrAt("EncryptionKey",true,"mode","ECB")
xmlToSign.UpdateAttrAt("EncryptionKey",true,"padding","PKCS#1")
xmlToSign.UpdateChildContent("EncryptionKey","...")
xmlToSign.UpdateAttrAt("DocumentList|Document|FormCode",true,"schemaVersion","1-1")
xmlToSign.UpdateAttrAt("DocumentList|Document|FormCode",true,"systemCode","JPK_VAT (3)")
xmlToSign.UpdateChildContent("DocumentList|Document|FormCode","JPK_VAT")
xmlToSign.UpdateChildContent("DocumentList|Document|FileName","JPK_VAT_3_v1-1_20181208.xml")
xmlToSign.UpdateChildContent("DocumentList|Document|ContentLength","8736")
xmlToSign.UpdateAttrAt("DocumentList|Document|HashValue",true,"algorithm","SHA-256")
xmlToSign.UpdateAttrAt("DocumentList|Document|HashValue",true,"encoding","Base64")
xmlToSign.UpdateChildContent("DocumentList|Document|HashValue","JEEI1pItwh6dj/Xe1uts/x61qnjZ4DLHpkRMhmf1oQQ=")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList",true,"filesNumber","1")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Packaging|SplitZip",true,"mode","zip")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Packaging|SplitZip",true,"type","split")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",true,"block","16")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",true,"mode","CBC")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",true,"padding","PKCS#7")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",true,"size","256")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES|IV",true,"bytes","16")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES|IV",true,"encoding","Base64")
xmlToSign.UpdateChildContent("DocumentList|Document|FileSignatureList|Encryption|AES|IV","FFsCRAPYJD3J6cRvd44UDA==")
xmlToSign.UpdateChildContent("DocumentList|Document|FileSignatureList|FileSignature|OrdinalNumber","1")
xmlToSign.UpdateChildContent("DocumentList|Document|FileSignatureList|FileSignature|FileName","JPK_VAT_3_v1-1_20181208-000.xml.zip.aes")
xmlToSign.UpdateChildContent("DocumentList|Document|FileSignatureList|FileSignature|ContentLength","16")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|FileSignature|HashValue",true,"algorithm","MD5")
xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|FileSignature|HashValue",true,"encoding","Base64")
xmlToSign.UpdateChildContent("DocumentList|Document|FileSignatureList|FileSignature|HashValue","BX2DTD3ASC/zF6aq/012Cg==")

# Also see the online tool to generate the code from sample already-signed XML: 
# Generate XML Signature Creation Code from an Already-Signed XML Sample

gen = Chilkat::CkXmlDSigGen.new()

gen.put_SigLocation("InitUpload")
gen.put_SigId("id-1234")
gen.put_SigNamespacePrefix("ds")
gen.put_SigNamespaceUri("http://www.w3.org/2000/09/xmldsig#")
gen.put_SignedInfoCanonAlg("EXCL_C14N")
gen.put_SignedInfoDigestMethod("sha256")

# Create an Object to be added to the Signature.
object1 = Chilkat::CkXml.new()
object1.put_Tag("xades:QualifyingProperties")
object1.AddAttribute("Target","#id-1234")
object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#")
object1.UpdateAttrAt("xades:SignedProperties",true,"Id","xades-id-1234")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT")
object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",true,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2","TO BE GENERATED BY CHILKAT")
object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",true,"ObjectReference","#r-id-1")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","text/xml")

gen.AddObject("",object1.getXml(),"","")

# -------- Reference 1 --------
xml1 = Chilkat::CkXml.new()
xml1.put_Tag("ds:Transforms")
xml1.UpdateAttrAt("ds:Transform",true,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116")
xml1.UpdateChildContent("ds:Transform|ds:XPath","not(ancestor-or-self::ds:Signature)")
xml1.UpdateAttrAt("ds:Transform[1]",true,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")

gen.AddSameDocRef2("","sha256",xml1,"")
gen.SetRefIdAttr("","r-id-1")

# -------- Reference 2 --------
xml2 = Chilkat::CkXml.new()
xml2.put_Tag("ds:Transforms")
xml2.UpdateAttrAt("ds:Transform",true,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")

gen.AddObjectRef2("xades-id-1234","sha256",xml2,"http://uri.etsi.org/01903#SignedProperties")

# Provide a certificate + private key. (PFX password is test123)
# See Load Certificate on Smartcard for an example showing how to load the cert from a smartcard..
cert = Chilkat::CkCert.new()
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if (success != true)
    print cert.lastErrorText() + "\n";
    exit
end

gen.SetX509Cert(cert,true)

gen.put_KeyInfoType("X509Data")
gen.put_X509Type("Certificate")

# Load XML to be signed...
sbXml = Chilkat::CkStringBuilder.new()
xmlToSign.GetXmlSb(sbXml)

gen.put_Behaviors("IndentedSignature,TransformSignatureXPath,IssuerSerialHex")

# Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
if (success != true)
    print gen.lastErrorText() + "\n";
    exit
end

# Save the signed XMl to a file.
success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",false)

print sbXml.getAsString() + "\n";

# ----------------------------------------
# Verify the signature we just produced...
verifier = Chilkat::CkXmlDSig.new()
success = verifier.LoadSignatureSb(sbXml)
if (success != true)
    print verifier.lastErrorText() + "\n";
    exit
end

verified = verifier.VerifySignature(true)
if (verified != true)
    print verifier.lastErrorText() + "\n";
    exit
end

print "This signature was successfully verified." + "\n";