DataFlex
which in turn contains an X509SKI element which contains only the signing certificate's Subject Key Identifier.
DataFlex
Create XML Signature with KeyInfo / X509Data / X509SKI
See more XML Digital Signatures Examples
This example demonstrates how to create an XML Digital Signature where the KeyInfo element contains an X509Data element,which in turn contains an X509SKI element which contains only the signing certificate's Subject Key Identifier.
Chilkat DataFlex Downloads
Use ChilkatAx-win32.pkg
Procedure Test
Boolean iSuccess
Variant vSbXml
Handle hoSbXml
Handle hoHttp
Data Handle hoPfxData
Handle hoPfx
String sPassword
Variant vCert
Handle hoCert
Handle hoGen
Boolean iBUsePrivateKey
String sTemp1
Move False To iSuccess
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// To begin, we'll need a PFX containing a certificate and private key, and the SOAP XML to be signed.
// Chilkat provides sample data at chilkatsoft.com and chilkatdownload.com, and our first step is to download.
// -------------------------------------------------------------------------
// Step 1: Get the SOAP XML to be signed.
//
Get Create (RefClass(cComChilkatStringBuilder)) To hoSbXml
If (Not(IsComObjectCreated(hoSbXml))) Begin
Send CreateComObject of hoSbXml
End
Get Create (RefClass(cComChilkatHttp)) To hoHttp
If (Not(IsComObjectCreated(hoHttp))) Begin
Send CreateComObject of hoHttp
End
Get pvComObject of hoSbXml to vSbXml
Get ComQuickGetSb Of hoHttp "https://www.chilkatsoft.com/exampleData/soapToSign.xml" vSbXml To iSuccess
If (iSuccess = False) Begin
Get ComLastErrorText Of hoHttp To sTemp1
Showln sTemp1
Procedure_Return
End
// The SOAP XML contains this:
// <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
// <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
// <SOAP-ENV:Header>
// <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" SOAP-ENV:mustUnderstand="1"></wsse:Security>
// </SOAP-ENV:Header>
// <SOAP-ENV:Body xmlns:SOAP-SEC="http://schemas.xmlsoap.org/soap/security/2000-12" SOAP-SEC:id="Body">
// <z:FooBar xmlns:z="http://example.com" />
// </SOAP-ENV:Body>
// </SOAP-ENV:Envelope>
// -------------------------------------------------------------------------
// Step 2: Get the test certificate and private key stored in a .pfx
//
Get Create (RefClass(cComChilkatBinData)) To hoPfxData
If (Not(IsComObjectCreated(hoPfxData))) Begin
Send CreateComObject of hoPfxData
End
Get pvComObject of hoPfxData to vPfxData
Get ComQuickGetBd Of hoHttp "https://chilkatdownload.com/example_data/testcertificate.pfx" vPfxData To iSuccess
If (iSuccess = False) Begin
Get ComLastErrorText Of hoHttp To sTemp1
Showln sTemp1
Procedure_Return
End
Get Create (RefClass(cComChilkatPfx)) To hoPfx
If (Not(IsComObjectCreated(hoPfx))) Begin
Send CreateComObject of hoPfx
End
Move "test" To sPassword
Get ComGetEncoded Of hoPfxData "base64" To sTemp1
Get ComLoadPfxEncoded Of hoPfx sTemp1 "base64" sPassword To iSuccess
If (iSuccess = False) Begin
Get ComLastErrorText Of hoPfx To sTemp1
Showln sTemp1
Procedure_Return
End
// -------------------------------------------------------------------------
// Step 3: Get the certificate from the PFX.
//
Get Create (RefClass(cComChilkatCert)) To hoCert
If (Not(IsComObjectCreated(hoCert))) Begin
Send CreateComObject of hoCert
End
Get pvComObject of hoCert to vCert
Get ComCertAt Of hoPfx 0 vCert To iSuccess
If (iSuccess = False) Begin
Get ComLastErrorText Of hoPfx To sTemp1
Showln sTemp1
Procedure_Return
End
// Prepare for signing...
Get Create (RefClass(cComChilkatXmlDSigGen)) To hoGen
If (Not(IsComObjectCreated(hoGen))) Begin
Send CreateComObject of hoGen
End
// Indicate where the Signature will be inserted.
Set ComSigLocation Of hoGen To "SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security"
// Add a reference to the fragment of the XML to be signed.
// Note: "Body" refers to the XML element having an "id" equal to "Body", where "id" is case insensitive
// and where any namespace might qualify the attribute. In this case, the SOAP-ENV:Body fragment is signed
// NOT because the tag = "Body", but because it has SOAP-SEC:id="Body"
Get ComAddSameDocRef Of hoGen "Body" "sha1" "EXCL_C14N" "" "" To iSuccess
// (You can read about the SignedInfoPrefixList in the online reference documentation. It's optional..)
Set ComSignedInfoPrefixList Of hoGen To "wsse SOAP-ENV"
// Provide the private key for signing via the certificate, and indicate that
// we want only the Subject Key Identifier (SKI) of the certificate embedded in the KeyInfo.
Set ComKeyInfoType Of hoGen To "X509Data"
Set ComX509Type Of hoGen To "SKI"
// Note: Because our certificate was loaded from a PFX which also contained the private key,
// Chilkat automatically knows and has the private key associated with the certificate.
// We set bUsePrivateKey to tell the SetX509Cert method to automatically use the private key
// associated with the certificate for signing. If, for example, we obtained the certificate
// by loading from a .cer file, then we would not already have the associated private key.
// In that case, the application could explicitly load the cert's private key from some
// other source, such as a .key, .pem, etc. and then call gen.SetPrivateKey.
Move True To iBUsePrivateKey
Get pvComObject of hoCert to vCert
Get ComSetX509Cert Of hoGen vCert iBUsePrivateKey To iSuccess
If (iSuccess <> True) Begin
Get ComLastErrorText Of hoGen To sTemp1
Showln sTemp1
Procedure_Return
End
// Everything's specified. Now create and insert the Signature
Get pvComObject of hoSbXml to vSbXml
Get ComCreateXmlDSigSb Of hoGen vSbXml To iSuccess
If (iSuccess = False) Begin
Get ComLastErrorText Of hoGen To sTemp1
Showln sTemp1
Procedure_Return
End
// Examine the XML with the digital signature inserted
Get ComGetAsString Of hoSbXml To sTemp1
Showln sTemp1
// Here is the actual output. A pretty-printed version of the output is shown below, but the addition of whitespace
// in the XML invalidates the signature.
// <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
// <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
// <SOAP-ENV:Header>
// <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" SOAP-ENV:mustUnderstand="1"><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"><InclusiveNamespaces xmlns="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="wsse SOAP-ENV"/></ds:CanonicalizationMethod><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#Body"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/><ds:DigestValue>PIiVPpuMc1jGpWaL8ftzTOcc4gc=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>Rlta8LplnFH0q8L+UeVmh4Smdn6oVETi4RoUmpT/KQX3RNAIOdCVE3b7gjmx5+3vp3DhjphOsZvW6dXzkI46xt9pD5otp3b/ZppGqKzltggo9gyQtPvJ8ltJZqVKYOGo5uElRFF/xm/zcx5Y3E14t+LYVSlv2lbem/zZ5zQ7ai8DmGD33id7nGu+MXVwb3kGkJFYoB/GOXtwsep+bcilMglTp8/7SBfBaVFKxWVBp4N2NW7bGlyDct8FaCk9hXQDNm/kqne9GU87tgh8/rbsFCYgyqIRMIvMPvhRWr2EKdEKyLtlZ8w0KYJYpgsf4T7SDghemzXkJoJPrfUQmHudIw==</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509SKI>bDMtm8bAimMlGLU2M/82W8+y3tM=</ds:X509SKI></ds:X509Data></ds:KeyInfo></ds:Signature></wsse:Security>
// </SOAP-ENV:Header>
// <SOAP-ENV:Body xmlns:SOAP-SEC="http://schemas.xmlsoap.org/soap/security/2000-12" SOAP-SEC:id="Body">
// <z:FooBar xmlns:z="http://example.com" />
// </SOAP-ENV:Body>
// </SOAP-ENV:Envelope>
// ----------------------------------------------------------------
// Pretty-printed output (invalidates the signature)
// This makes it easier to see the X509IssuerSerial contained within the KeyInfo.
// <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
// <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
// <SOAP-ENV:Header>
// <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" SOAP-ENV:mustUnderstand="1">
// <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
// <ds:SignedInfo>
// <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#">
// <InclusiveNamespaces xmlns="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="wsse SOAP-ENV" />
// </ds:CanonicalizationMethod>
// <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256" />
// <ds:Reference URI="#Body">
// <ds:Transforms>
// <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
// </ds:Transforms>
// <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
// <ds:DigestValue>PIiVPpuMc1jGpWaL8ftzTOcc4gc=</ds:DigestValue>
// </ds:Reference>
// </ds:SignedInfo>
// <ds:SignatureValue>Rlta8LplnFH0q8L+UeVmh4Smdn6oVETi4RoUmpT/KQX3RNAIOdCVE3b7gjmx5+3vp3DhjphOsZvW6dXzkI46xt9pD5otp3b/ZppGqKzltggo9gyQtPvJ8ltJZqVKYOGo5uElRFF/xm/zcx5Y3E14t+LYVSlv2lbem/zZ5zQ7ai8DmGD33id7nGu+MXVwb3kGkJFYoB/GOXtwsep+bcilMglTp8/7SBfBaVFKxWVBp4N2NW7bGlyDct8FaCk9hXQDNm/kqne9GU87tgh8/rbsFCYgyqIRMIvMPvhRWr2EKdEKyLtlZ8w0KYJYpgsf4T7SDghemzXkJoJPrfUQmHudIw==</ds:SignatureValue>
// <ds:KeyInfo>
// <ds:X509Data>
// <ds:X509SKI>bDMtm8bAimMlGLU2M/82W8+y3tM=</ds:X509SKI>
// </ds:X509Data>
// </ds:KeyInfo>
// </ds:Signature>
// </wsse:Security>
// </SOAP-ENV:Header>
// <SOAP-ENV:Body xmlns:SOAP-SEC="http://schemas.xmlsoap.org/soap/security/2000-12" SOAP-SEC:id="Body">
// <z:FooBar xmlns:z="http://example.com" />
// </SOAP-ENV:Body>
// </SOAP-ENV:Envelope>
End_Procedure