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(PureBasic) XML-DSig Add Object Reference with Transforms Specified ExplicitlyDemonstrates how to use the new AddObjectRef2 method to explicitly specify the XML Transforms fragment.
IncludeFile "CkCert.pb" IncludeFile "CkXml.pb" IncludeFile "CkXmlDSigGen.pb" IncludeFile "CkXmlDSig.pb" IncludeFile "CkStringBuilder.pb" Procedure ChilkatExample() ; This example requires the Chilkat API to have been previously unlocked. ; See Global Unlock Sample for sample code. success.i = 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 xmlToSign.i = CkXml::ckCreate() If xmlToSign.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkXml::setCkTag(xmlToSign, "InitUpload") CkXml::ckAddAttribute(xmlToSign,"xmlns","http://e-dokumenty.mf.gov.pl") CkXml::ckUpdateChildContent(xmlToSign,"DocumentType","JPK") CkXml::ckUpdateChildContent(xmlToSign,"Version","01.02.01.20160617") CkXml::ckUpdateAttrAt(xmlToSign,"EncryptionKey",1,"algorithm","RSA") CkXml::ckUpdateAttrAt(xmlToSign,"EncryptionKey",1,"encoding","Base64") CkXml::ckUpdateAttrAt(xmlToSign,"EncryptionKey",1,"mode","ECB") CkXml::ckUpdateAttrAt(xmlToSign,"EncryptionKey",1,"padding","PKCS#1") CkXml::ckUpdateChildContent(xmlToSign,"EncryptionKey","xxxx") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FormCode",1,"schemaVersion","1-1") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FormCode",1,"systemCode","JPK_VAT (3)") CkXml::ckUpdateChildContent(xmlToSign,"DocumentList|Document|FormCode","JPK_VAT") CkXml::ckUpdateChildContent(xmlToSign,"DocumentList|Document|FileName","JPK_VAT_3_v1-1_20181201.xml") CkXml::ckUpdateChildContent(xmlToSign,"DocumentList|Document|ContentLength","8736") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|HashValue",1,"algorithm","SHA-256") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|HashValue",1,"encoding","Base64") CkXml::ckUpdateChildContent(xmlToSign,"DocumentList|Document|HashValue","JEDI1pItwh6dj/Xx1uts/x61qnjZ4DLHpkZMhmf1oKQ=") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList",1,"filesNumber","1") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|Packaging|SplitZip",1,"mode","zip") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|Packaging|SplitZip",1,"type","split") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|Encryption|AES",1,"block","16") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|Encryption|AES",1,"mode","CBC") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|Encryption|AES",1,"padding","PKCS#7") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|Encryption|AES",1,"size","256") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|Encryption|AES|IV",1,"bytes","16") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|Encryption|AES|IV",1,"encoding","Base64") CkXml::ckUpdateChildContent(xmlToSign,"DocumentList|Document|FileSignatureList|Encryption|AES|IV","z64oN9zXHt1+S3XACRSCYw==") CkXml::ckUpdateChildContent(xmlToSign,"DocumentList|Document|FileSignatureList|FileSignature|OrdinalNumber","1") CkXml::ckUpdateChildContent(xmlToSign,"DocumentList|Document|FileSignatureList|FileSignature|FileName","JPK_VAT_3_v1-1_20181201-000.xml.zip.aes") CkXml::ckUpdateChildContent(xmlToSign,"DocumentList|Document|FileSignatureList|FileSignature|ContentLength","16") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|FileSignature|HashValue",1,"algorithm","MD5") CkXml::ckUpdateAttrAt(xmlToSign,"DocumentList|Document|FileSignatureList|FileSignature|HashValue",1,"encoding","Base64") CkXml::ckUpdateChildContent(xmlToSign,"DocumentList|Document|FileSignatureList|FileSignature|HashValue","5MX0q1935fvMjLFV7E1yDw==") gen.i = CkXmlDSigGen::ckCreate() If gen.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkXmlDSigGen::setCkSigLocation(gen, "InitUpload") CkXmlDSigGen::setCkSigLocationMod(gen, 0) CkXmlDSigGen::setCkSigId(gen, "id-1234") CkXmlDSigGen::setCkSigNamespacePrefix(gen, "ds") CkXmlDSigGen::setCkSigNamespaceUri(gen, "http://www.w3.org/2000/09/xmldsig#") CkXmlDSigGen::setCkSignedInfoCanonAlg(gen, "EXCL_C14N") CkXmlDSigGen::setCkSignedInfoDigestMethod(gen, "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> object1.i = CkXml::ckCreate() If object1.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkXml::setCkTag(object1, "xades:QualifyingProperties") CkXml::ckAddAttribute(object1,"Target","#id-1234") CkXml::ckAddAttribute(object1,"xmlns:xades","http://uri.etsi.org/01903/v1.3.2#") CkXml::ckUpdateAttrAt(object1,"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 CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT") CkXml::ckUpdateAttrAt(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2000/09/xmldsig#sha1") CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT") CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT") CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT") CkXml::ckUpdateAttrAt(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",1,"ObjectReference","#r-id-1") CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","text/xml") CkXmlDSigGen::ckAddObject(gen,"",CkXml::ckGetXml(object1),"","") ; -------- 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> xml1.i = CkXml::ckCreate() If xml1.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkXml::setCkTag(xml1, "ds:Transforms") CkXml::ckUpdateAttrAt(xml1,"ds:Transform",1,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116") CkXml::ckUpdateChildContent(xml1,"ds:Transform|ds:XPath","not(ancestor-or-self::ds:Signature)") CkXml::ckUpdateAttrAt(xml1,"ds:Transform[1]",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#") CkXmlDSigGen::ckAddSameDocRef2(gen,"","sha256",xml1,"") CkXmlDSigGen::ckSetRefIdAttr(gen,"","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> xml2.i = CkXml::ckCreate() If xml2.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkXml::setCkTag(xml2, "ds:Transforms") CkXml::ckUpdateAttrAt(xml2,"ds:Transform",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#") CkXmlDSigGen::ckAddObjectRef2(gen,"xades-id-1234","sha256",xml2,"http://uri.etsi.org/01903#SignedProperties") ; Provide a certificate + private key. (PFX password is test123) cert.i = CkCert::ckCreate() If cert.i = 0 Debug "Failed to create object." ProcedureReturn EndIf success = CkCert::ckLoadPfxFile(cert,"qa_data/pfx/cert_test123.pfx","test123") If success <> 1 Debug CkCert::ckLastErrorText(cert) CkXml::ckDispose(xmlToSign) CkXmlDSigGen::ckDispose(gen) CkXml::ckDispose(object1) CkXml::ckDispose(xml1) CkXml::ckDispose(xml2) CkCert::ckDispose(cert) ProcedureReturn EndIf CkXmlDSigGen::ckSetX509Cert(gen,cert,1) CkXmlDSigGen::setCkKeyInfoType(gen, "X509Data") CkXmlDSigGen::setCkX509Type(gen, "Certificate") ; Load XML to be signed... sbXml.i = CkStringBuilder::ckCreate() If sbXml.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkXml::ckGetXmlSb(xmlToSign,sbXml) CkXmlDSigGen::setCkBehaviors(gen, "IndentedSignature") ; Sign the XML... success = CkXmlDSigGen::ckCreateXmlDSigSb(gen,sbXml) If success <> 1 Debug CkXmlDSigGen::ckLastErrorText(gen) CkXml::ckDispose(xmlToSign) CkXmlDSigGen::ckDispose(gen) CkXml::ckDispose(object1) CkXml::ckDispose(xml1) CkXml::ckDispose(xml2) CkCert::ckDispose(cert) CkStringBuilder::ckDispose(sbXml) ProcedureReturn EndIf ; ----------------------------------------------- ; Save the signed XML to a file. success = CkStringBuilder::ckWriteFile(sbXml,"qa_output/signedXml.xml","utf-8",0) Debug CkStringBuilder::ckGetAsString(sbXml) ; ---------------------------------------- ; Verify the signatures we just produced... verifier.i = CkXmlDSig::ckCreate() If verifier.i = 0 Debug "Failed to create object." ProcedureReturn EndIf success = CkXmlDSig::ckLoadSignatureSb(verifier,sbXml) If success <> 1 Debug CkXmlDSig::ckLastErrorText(verifier) CkXml::ckDispose(xmlToSign) CkXmlDSigGen::ckDispose(gen) CkXml::ckDispose(object1) CkXml::ckDispose(xml1) CkXml::ckDispose(xml2) CkCert::ckDispose(cert) CkStringBuilder::ckDispose(sbXml) CkXmlDSig::ckDispose(verifier) ProcedureReturn EndIf numSigs.i = CkXmlDSig::ckNumSignatures(verifier) verifyIdx.i = 0 While verifyIdx < numSigs CkXmlDSig::setCkSelector(verifier, verifyIdx) verified.i = CkXmlDSig::ckVerifySignature(verifier,1) If verified <> 1 Debug CkXmlDSig::ckLastErrorText(verifier) CkXml::ckDispose(xmlToSign) CkXmlDSigGen::ckDispose(gen) CkXml::ckDispose(object1) CkXml::ckDispose(xml1) CkXml::ckDispose(xml2) CkCert::ckDispose(cert) CkStringBuilder::ckDispose(sbXml) CkXmlDSig::ckDispose(verifier) ProcedureReturn EndIf verifyIdx = verifyIdx + 1 Wend Debug "All signatures were successfully verified." CkXml::ckDispose(xmlToSign) CkXmlDSigGen::ckDispose(gen) CkXml::ckDispose(object1) CkXml::ckDispose(xml1) CkXml::ckDispose(xml2) CkCert::ckDispose(cert) CkStringBuilder::ckDispose(sbXml) CkXmlDSig::ckDispose(verifier) ProcedureReturn EndProcedure |
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