Lazarus Pascal
Lazarus Pascal
XML-DSig Add Reference with Transforms Specified Explicitly
Demonstrates how to use the new AddSameDocRef2 method to explicitly specify the XML Transforms fragment.Chilkat Lazarus Pascal Downloads
program ChilkatDemo;
// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}
uses
{$IFDEF UNIX}
cthreads,
{$ENDIF}
SysUtils,
CkDllLoader,
Chilkat.StringBuilder,
Chilkat.XmlDSigGen,
Chilkat.Xml,
Chilkat.XmlDSig,
Chilkat.Cert;
// ---------------------------------------------------------------------------
procedure RunDemo;
var
success: Boolean;
xmlToSign: TXml;
gen: TXmlDSigGen;
object1: TXml;
xml1: TXml;
cert: TCert;
sbXml: TStringBuilder;
verifier: TXmlDSig;
numSigs: Integer;
verifyIdx: Integer;
verified: Boolean;
begin
success := False;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
success := True;
// Create the following XML to be signed:
// <doc>
// <s id="s1">Some text...</s>
// <p>Some text...</p>
// <p class="note">A note...</p>
// </doc>
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
xmlToSign := TXml.Create;
xmlToSign.Tag := 'doc';
xmlToSign.UpdateAttrAt('s',True,'id','s1');
xmlToSign.UpdateChildContent('s','Some text...');
xmlToSign.UpdateChildContent('p','Some text...');
xmlToSign.UpdateAttrAt('p[1]',True,'class','note');
xmlToSign.UpdateChildContent('p[1]','A note...');
WriteLn(xmlToSign.GetXml());
gen := TXmlDSigGen.Create;
gen.SigLocation := 'doc';
gen.SigLocationMod := 0;
gen.SigId := 'Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature';
gen.SigNamespacePrefix := 'ds';
gen.SigNamespaceUri := 'http://www.w3.org/2000/09/xmldsig#';
gen.SigValueId := 'Signature-78f29839-06af-448f-b479-ca46457fab1b-SignatureValue';
gen.SignedInfoCanonAlg := 'C14N';
gen.SignedInfoDigestMethod := 'sha1';
// Set the KeyInfoId before adding references..
gen.KeyInfoId := 'Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo';
// The following XML to be added as an Object to the Signature
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
// <xades:QualifyingProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties" Target="#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:xades="http://uri.etsi.org/01903/v1.3.2#">
// <xades:SignedProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties">
// <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="#Reference-24eb6003-d41c-442c-a731-d4c58f94790b">
// <xades:Description/>
// <xades:ObjectIdentifier>
// <xades:Identifier Qualifier="OIDAsURN">urn:oid:1.2.840.10003.5.109.10</xades:Identifier>
// <xades:Description/>
// </xades:ObjectIdentifier>
// <xades:MimeType>text/xml</xades:MimeType>
// <xades:Encoding/>
// </xades:DataObjectFormat>
// </xades:SignedDataObjectProperties>
// </xades:SignedProperties>
// </xades:QualifyingProperties>
object1 := TXml.Create;
object1.Tag := 'xades:QualifyingProperties';
object1.AddAttribute('Id','Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties');
object1.AddAttribute('Target','#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature');
object1.AddAttribute('xmlns:ds','http://www.w3.org/2000/09/xmldsig#');
object1.AddAttribute('xmlns:xades','http://uri.etsi.org/01903/v1.3.2#');
object1.UpdateAttrAt('xades:SignedProperties',True,'Id','Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties');
object1.UpdateChildContent('xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime','TO BE GENERATED BY CHILKAT');
// 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.UpdateAttrAt('xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod',True,'Algorithm','http://www.w3.org/2000/09/xmldsig#sha1');
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','#Reference-24eb6003-d41c-442c-a731-d4c58f94790b');
object1.UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description','');
object1.UpdateAttrAt('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier',True,'Qualifier','OIDAsURN');
object1.UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier','urn:oid:1.2.840.10003.5.109.10');
object1.UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Description','');
object1.UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType','text/xml');
object1.UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding','');
WriteLn(object1.GetXml());
gen.AddObject('',object1.GetXml(),'','');
// -------- Reference 1 --------
// Create the following Transforms fragment:
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
// <ds:Transforms>
// <ds:Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
// <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
// <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
// <ds:XPath xmlns:ds="http://www.w3.org/2000/09/xmldsig#">not(ancestor-or-self::ds:Signature)</ds:XPath>
// </ds:Transform>
// </ds:Transforms>
xml1 := TXml.Create;
xml1.Tag := 'ds:Transforms';
xml1.UpdateAttrAt('ds:Transform',True,'Algorithm','http://www.w3.org/TR/2001/REC-xml-c14n-20010315');
xml1.UpdateAttrAt('ds:Transform[1]',True,'Algorithm','http://www.w3.org/2000/09/xmldsig#enveloped-signature');
xml1.UpdateAttrAt('ds:Transform[2]',True,'Algorithm','http://www.w3.org/TR/1999/REC-xpath-19991116');
xml1.UpdateAttrAt('ds:Transform[2]|ds:XPath',True,'xmlns:ds','http://www.w3.org/2000/09/xmldsig#');
xml1.UpdateChildContent('ds:Transform[2]|ds:XPath','not(ancestor-or-self::ds:Signature)');
// This is the "Transforms" XML fragment passed to AddSameDocRef2.
WriteLn(xml1.GetXml());
gen.AddSameDocRef2('','sha1',xml1,'');
gen.SetRefIdAttr('','Reference-24eb6003-d41c-442c-a731-d4c58f94790b');
// -------- Reference 2 --------
gen.AddObjectRef('Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties','sha1','','','http://uri.etsi.org/01903#SignedProperties');
// -------- Reference 3 --------
gen.AddSameDocRef('Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo','sha1','','','');
// Provide a certificate + private key. (PFX password is test123)
cert := TCert.Create;
success := cert.LoadPfxFile('qa_data/pfx/cert_test123.pfx','test123');
if (success <> True) then
begin
WriteLn(cert.LastErrorText);
Exit;
end;
gen.SetX509Cert(cert,True);
gen.KeyInfoType := 'X509Data+KeyValue';
gen.X509Type := 'CertChain';
// Load XML to be signed...
sbXml := TStringBuilder.Create;
xmlToSign.GetXmlSb(sbXml);
gen.Behaviors := 'IndentedSignature';
// Sign the XML...
success := gen.CreateXmlDSigSb(sbXml);
if (success <> True) then
begin
WriteLn(gen.LastErrorText);
Exit;
end;
// -----------------------------------------------
// Save the signed XML to a file.
success := sbXml.WriteFile('qa_output/signedXml.xml','utf-8',False);
WriteLn(sbXml.GetAsString());
// ----------------------------------------
// Verify the signatures we just produced...
verifier := TXmlDSig.Create;
success := verifier.LoadSignatureSb(sbXml);
if (success <> True) then
begin
WriteLn(verifier.LastErrorText);
Exit;
end;
numSigs := verifier.NumSignatures;
verifyIdx := 0;
while verifyIdx < numSigs do
begin
verifier.Selector := verifyIdx;
verified := verifier.VerifySignature(True);
if (verified <> True) then
begin
WriteLn(verifier.LastErrorText);
Exit;
end;
verifyIdx := verifyIdx + 1;
end;
WriteLn('All signatures were successfully verified.');
xmlToSign.Free;
gen.Free;
object1.Free;
xml1.Free;
cert.Free;
sbXml.Free;
verifier.Free;
end;
// ---------------------------------------------------------------------------
begin
try
RunDemo;
except
on E: Exception do
WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
end;
WriteLn;
{$IFDEF MSWINDOWS}
WriteLn('Press Enter to exit...');
ReadLn;
{$ENDIF}
end.