Visual FoxPro Requires Chilkat v11.0.0+

Create XML Signature using Java KeyStore (.jks)

See more XML Digital Signatures Examples

Demonstrates how to create an XML digital signature using a certificate and private key from a Java KeyStore (.jks) Visual FoxPro

LOCAL lnSuccess
LOCAL loXml
LOCAL loJks
LOCAL lcPassword
LOCAL loChain
LOCAL loCert
LOCAL loGen
LOCAL lnBUsePrivateKey
LOCAL loSbXml

lnSuccess = 0

*  This example requires the Chilkat API to have been previously unlocked.
*  See Global Unlock Sample for sample code.

*  The SOAP XML to be signed in this example contains the following:

*  <?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>
*  

*  Build the XML to sign.
*  Use this online tool to generate the code from sample XML: 
*  Generate Code to Create XML

loXml = CreateObject('Chilkat.Xml')
loXml.Tag = "SOAP-ENV:Envelope"
loXml.AddAttribute("xmlns:SOAP-ENV","http://schemas.xmlsoap.org/soap/envelope/")
loXml.UpdateAttrAt("SOAP-ENV:Header|wsse:Security",1,"xmlns:wsse","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd")
loXml.UpdateAttrAt("SOAP-ENV:Header|wsse:Security",1,"SOAP-ENV:mustUnderstand","1")
loXml.UpdateAttrAt("SOAP-ENV:Body",1,"xmlns:SOAP-SEC","http://schemas.xmlsoap.org/soap/security/2000-12")
loXml.UpdateAttrAt("SOAP-ENV:Body",1,"SOAP-SEC:id","Body")
loXml.UpdateAttrAt("SOAP-ENV:Body|z:FooBar",1,"xmlns:z","http://example.com")

*  Load a JavaKeyStore file containing the certificate + private key.
loJks = CreateObject('Chilkat.JavaKeyStore')
lcPassword = "secret"
lnSuccess = loJks.LoadFile(lcPassword,"qa_data/jks/test_secret.jks")
IF (lnSuccess = 0) THEN
    ? loJks.LastErrorText
    RELEASE loXml
    RELEASE loJks
    CANCEL
ENDIF

*  Make sure we have a private key.
IF (loJks.NumPrivateKeys < 1) THEN
    ? "No private key available."
    RELEASE loXml
    RELEASE loJks
    CANCEL
ENDIF

*  -------------------------------------------------------------------------
*  Get the certificate chain associated with the 1st (and probably only) private key in the JKS.

loChain = CreateObject('Chilkat.CertChain')
lnSuccess = loJks.CertChainAt(0,loChain)
IF (lnSuccess = 0) THEN
    ? loJks.LastErrorText
    RELEASE loXml
    RELEASE loJks
    RELEASE loChain
    CANCEL
ENDIF

loCert = CreateObject('Chilkat.Cert')
lnSuccess = loChain.CertAt(0,loCert)
IF (lnSuccess = 0) THEN
    ? loChain.LastErrorText
    RELEASE loXml
    RELEASE loJks
    RELEASE loChain
    RELEASE loCert
    CANCEL
ENDIF

*  Verify again that this cert has a private key.
IF (loCert.HasPrivateKey() <> 1) THEN
    ? "Certificate has no associated private key."
    RELEASE loXml
    RELEASE loJks
    RELEASE loChain
    RELEASE loCert
    CANCEL
ENDIF

*  Prepare for signing...
*  Use this online tool to generate the following code from an already-signed XML sample: 
*  Generate Code to Create an XML Signature
loGen = CreateObject('Chilkat.XmlDSigGen')

*  Indicate where the Signature will be inserted.
loGen.SigLocation = "SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security"

*  Add a reference to the fragment of the XML to be signed.
loGen.AddSameDocRef("Body","sha1","EXCL_C14N","","")

*  (You can read about the SignedInfoPrefixList in the online reference documentation.  It's optional..)
loGen.SignedInfoPrefixList = "wsse SOAP-ENV"

*  Provide the private key for signing via the certificate, and indicate that
*  we want the base64 of the certificate embedded in the KeyInfo.
loGen.KeyInfoType = "X509Data"
loGen.X509Type = "Certificate"

*  Note: Because our certificate was loaded from a JKS 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.
lnBUsePrivateKey = 1
lnSuccess = loGen.SetX509Cert(loCert,lnBUsePrivateKey)
IF (lnSuccess <> 1) THEN
    ? loGen.LastErrorText
    RELEASE loXml
    RELEASE loJks
    RELEASE loChain
    RELEASE loCert
    RELEASE loGen
    CANCEL
ENDIF

*  Everything's specified.  Now create and insert the Signature
loSbXml = CreateObject('Chilkat.StringBuilder')
loXml.GetXmlSb(loSbXml)
lnSuccess = loGen.CreateXmlDSigSb(loSbXml)
IF (lnSuccess = 0) THEN
    ? loGen.LastErrorText
    RELEASE loXml
    RELEASE loJks
    RELEASE loChain
    RELEASE loCert
    RELEASE loGen
    RELEASE loSbXml
    CANCEL
ENDIF

*  Examine the XML with the digital signature inserted
? loSbXml.GetAsString()

RELEASE loXml
RELEASE loJks
RELEASE loChain
RELEASE loCert
RELEASE loGen
RELEASE loSbXml