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(Visual Basic 6.0) XML-DSig Add Object Reference with Transforms Specified ExplicitlyDemonstrates how to use the new AddObjectRef2 method to explicitly specify the XML Transforms fragment.
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim success As Long success = 1 ' Build the following XML to be signed: ' <?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">xxxx</EncryptionKey> ' <DocumentList> ' <Document> ' <FormCode schemaVersion="1-1" systemCode="JPK_VAT (3)">JPK_VAT</FormCode> ' <FileName>JPK_VAT_3_v1-1_20181201.xml</FileName> ' <ContentLength>8736</ContentLength> ' <HashValue algorithm="SHA-256" encoding="Base64">JEDI1pItwh6dj/Xx1uts/x61qnjZ4DLHpkZMhmf1oKQ=</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">z64oN9zXHt1+S3XACRSCYw==</IV> ' </AES> ' </Encryption> ' <FileSignature> ' <OrdinalNumber>1</OrdinalNumber> ' <FileName>JPK_VAT_3_v1-1_20181201-000.xml.zip.aes</FileName> ' <ContentLength>16</ContentLength> ' <HashValue algorithm="MD5" encoding="Base64">5MX0q1935fvMjLFV7E1yDw==</HashValue> ' </FileSignature> ' </FileSignatureList> ' </Document> ' </DocumentList> ' </InitUpload> ' Use this online tool to generate code from sample XML: ' Generate Code to Create XML Dim xmlToSign As New ChilkatXml xmlToSign.Tag = "InitUpload" success = xmlToSign.AddAttribute("xmlns","http://e-dokumenty.mf.gov.pl") xmlToSign.UpdateChildContent "DocumentType","JPK" xmlToSign.UpdateChildContent "Version","01.02.01.20160617" success = xmlToSign.UpdateAttrAt("EncryptionKey",1,"algorithm","RSA") success = xmlToSign.UpdateAttrAt("EncryptionKey",1,"encoding","Base64") success = xmlToSign.UpdateAttrAt("EncryptionKey",1,"mode","ECB") success = xmlToSign.UpdateAttrAt("EncryptionKey",1,"padding","PKCS#1") xmlToSign.UpdateChildContent "EncryptionKey","xxxx" success = xmlToSign.UpdateAttrAt("DocumentList|Document|FormCode",1,"schemaVersion","1-1") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FormCode",1,"systemCode","JPK_VAT (3)") xmlToSign.UpdateChildContent "DocumentList|Document|FormCode","JPK_VAT" xmlToSign.UpdateChildContent "DocumentList|Document|FileName","JPK_VAT_3_v1-1_20181201.xml" xmlToSign.UpdateChildContent "DocumentList|Document|ContentLength","8736" success = xmlToSign.UpdateAttrAt("DocumentList|Document|HashValue",1,"algorithm","SHA-256") success = xmlToSign.UpdateAttrAt("DocumentList|Document|HashValue",1,"encoding","Base64") xmlToSign.UpdateChildContent "DocumentList|Document|HashValue","JEDI1pItwh6dj/Xx1uts/x61qnjZ4DLHpkZMhmf1oKQ=" success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList",1,"filesNumber","1") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Packaging|SplitZip",1,"mode","zip") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Packaging|SplitZip",1,"type","split") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"block","16") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"mode","CBC") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"padding","PKCS#7") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"size","256") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES|IV",1,"bytes","16") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES|IV",1,"encoding","Base64") xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|Encryption|AES|IV","z64oN9zXHt1+S3XACRSCYw==" xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|FileSignature|OrdinalNumber","1" xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|FileSignature|FileName","JPK_VAT_3_v1-1_20181201-000.xml.zip.aes" xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|FileSignature|ContentLength","16" success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|FileSignature|HashValue",1,"algorithm","MD5") success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|FileSignature|HashValue",1,"encoding","Base64") xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|FileSignature|HashValue","5MX0q1935fvMjLFV7E1yDw==" Dim gen As New ChilkatXmlDSigGen gen.SigLocation = "InitUpload" gen.SigLocationMod = 0 gen.SigId = "id-1234" gen.SigNamespacePrefix = "ds" gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#" gen.SignedInfoCanonAlg = "EXCL_C14N" gen.SignedInfoDigestMethod = "sha256" ' Create an Object to be added to the Signature. ' <xades:QualifyingProperties Target="#id-1234" xmlns:xades="http://uri.etsi.org/01903/v1.3.2#"> ' <xades:SignedProperties Id="xades-id-1234"> ' <xades:SignedSignatureProperties> ' <xades:SigningTime>TO BE GENERATED BY CHILKAT</xades:SigningTime> ' <xades:SigningCertificate> ' <xades:Cert> ' <xades:CertDigest> ' <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/> ' <ds:DigestValue>TO BE GENERATED BY CHILKAT</ds:DigestValue> ' </xades:CertDigest> ' <xades:IssuerSerial> ' <ds:X509IssuerName>TO BE GENERATED BY CHILKAT</ds:X509IssuerName> ' <ds:X509SerialNumber>TO BE GENERATED BY CHILKAT</ds:X509SerialNumber> ' </xades:IssuerSerial> ' </xades:Cert> ' </xades:SigningCertificate> ' </xades:SignedSignatureProperties> ' <xades:SignedDataObjectProperties> ' <xades:DataObjectFormat ObjectReference="#r-id-1"> ' <xades:MimeType>text/xml</xades:MimeType> ' </xades:DataObjectFormat> ' </xades:SignedDataObjectProperties> ' </xades:SignedProperties> ' </xades:QualifyingProperties> Dim object1 As New ChilkatXml object1.Tag = "xades:QualifyingProperties" success = object1.AddAttribute("Target","#id-1234") success = object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#") success = object1.UpdateAttrAt("xades:SignedProperties",1,"Id","xades-id-1234") ' Note: It may be that http://www.w3.org/2001/04/xmlenc#sha256 is needed in the following line instead of http://www.w3.org/2000/09/xmldsig#sha1 object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT" success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2000/09/xmldsig#sha1") object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT" object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT" object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT" success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",1,"ObjectReference","#r-id-1") object1.UpdateChildContent "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","text/xml" success = gen.AddObject("",object1.GetXml(),"","") ' -------- Reference 1 -------- ' Build the following Transforms fragment: ' <ds:Transforms> ' <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116"> ' <ds:XPath>not(ancestor-or-self::ds:Signature)</ds:XPath> ' </ds:Transform> ' <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/> ' </ds:Transforms> Dim xml1 As New ChilkatXml xml1.Tag = "ds:Transforms" success = xml1.UpdateAttrAt("ds:Transform",1,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116") xml1.UpdateChildContent "ds:Transform|ds:XPath","not(ancestor-or-self::ds:Signature)" success = xml1.UpdateAttrAt("ds:Transform[1]",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#") success = gen.AddSameDocRef2("","sha256",xml1,"") success = gen.SetRefIdAttr("","r-id-1") ' -------- Reference 2 -------- ' Build the following Transforms fragment: ' <ds:Transforms> ' <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/> ' </ds:Transforms> Dim xml2 As New ChilkatXml xml2.Tag = "ds:Transforms" success = xml2.UpdateAttrAt("ds:Transform",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#") success = gen.AddObjectRef2("xades-id-1234","sha256",xml2,"http://uri.etsi.org/01903#SignedProperties") ' Provide a certificate + private key. (PFX password is test123) Dim cert As New ChilkatCert success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123") If (success <> 1) Then Debug.Print cert.LastErrorText Exit Sub End If success = gen.SetX509Cert(cert,1) gen.KeyInfoType = "X509Data" gen.X509Type = "Certificate" ' Load XML to be signed... Dim sbXml As New ChilkatStringBuilder success = xmlToSign.GetXmlSb(sbXml) gen.Behaviors = "IndentedSignature" ' Sign the XML... success = gen.CreateXmlDSigSb(sbXml) If (success <> 1) Then Debug.Print gen.LastErrorText Exit Sub End If ' ----------------------------------------------- ' Save the signed XML to a file. success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",0) Debug.Print sbXml.GetAsString() ' ---------------------------------------- ' Verify the signatures we just produced... Dim verifier As New ChilkatXmlDSig success = verifier.LoadSignatureSb(sbXml) If (success <> 1) Then Debug.Print verifier.LastErrorText Exit Sub End If Dim numSigs As Long numSigs = verifier.NumSignatures Dim verifyIdx As Long verifyIdx = 0 Do While verifyIdx < numSigs verifier.Selector = verifyIdx Dim verified As Long verified = verifier.VerifySignature(1) If (verified <> 1) Then Debug.Print verifier.LastErrorText Exit Sub End If verifyIdx = verifyIdx + 1 Loop Debug.Print "All signatures were successfully verified." |
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