C
C
EuroCert Cloud Sign XML
See more Signing in the Cloud Examples
Demonstrates how to sign XML using the EuroCert cloud provider. The signing of the hash happens on a hardware token on the EuroCert server. Everything else involving the updating the XML to add the signature happens locally within Chilkat.Note: This example requires Chilkat v9.5.0.96 or later.
Chilkat C Downloads
#include <C_CkPkcs11.h>
#include <C_CkCert.h>
#include <C_CkXml.h>
#include <C_CkXmlDSigGen.h>
#include <C_CkStringBuilder.h>
void ChilkatSample(void)
{
BOOL success;
HCkPkcs11 pkcs11;
const char *pin;
int userType;
HCkCert cert;
HCkXml xml;
HCkXmlDSigGen gen;
BOOL bUsePrivateKey;
HCkStringBuilder sbXml;
success = FALSE;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.
pkcs11 = CkPkcs11_Create();
// Provide the path to the EuroCert Cloud PKCS11 driver.
// If your application runs as a 64-bit process, use the path to the 64-bit ECSPKCS11.dll
CkPkcs11_putSharedLibPath(pkcs11,"C:\\Users\\Public\\ECSIGNER\\PKCS11\\32\\ECSPKCS11.dll");
// At this time, we don't know what should be used for the PIN.
// Perhaps it is documented online by EuroCert?
pin = "user:password";
userType = 1;
success = CkPkcs11_QuickSession(pkcs11,userType,pin);
if (success == FALSE) {
printf("%s\n",CkPkcs11_lastErrorText(pkcs11));
CkPkcs11_Dispose(pkcs11);
return;
}
cert = CkCert_Create();
success = CkCert_LoadFromFile(cert,"qa_data/certs/myCert.cer");
if (success == FALSE) {
printf("%s\n",CkCert_lastErrorText(cert));
CkPkcs11_Dispose(pkcs11);
CkCert_Dispose(cert);
return;
}
// Tell the certificate to link with the PKCS11 session.
// The cert's private key should be installed on the CloudHSM.
// If there are multiple private keys on the CloudHSM, then Chilkat will automatically
// locate and use the private key corresponding to the certificate.
success = CkCert_LinkPkcs11(cert,pkcs11);
if (success == FALSE) {
printf("%s\n",CkCert_lastErrorText(cert));
CkPkcs11_Dispose(pkcs11);
CkCert_Dispose(cert);
return;
}
// --------------------------------------------------------------------------
// At this point, we have the cert to be used for signing.
// Our XML signing code is the same as for a cert obtained from any other source..
// First generate the following XML to be signed:
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
// <?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>
xml = CkXml_Create();
CkXml_putTag(xml,"SOAP-ENV:Envelope");
CkXml_AddAttribute(xml,"xmlns:SOAP-ENV","http://schemas.xmlsoap.org/soap/envelope/");
CkXml_UpdateAttrAt(xml,"SOAP-ENV:Header|wsse:Security",TRUE,"xmlns:wsse","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
CkXml_UpdateAttrAt(xml,"SOAP-ENV:Header|wsse:Security",TRUE,"SOAP-ENV:mustUnderstand","1");
CkXml_UpdateAttrAt(xml,"SOAP-ENV:Body",TRUE,"xmlns:SOAP-SEC","http://schemas.xmlsoap.org/soap/security/2000-12");
CkXml_UpdateAttrAt(xml,"SOAP-ENV:Body",TRUE,"SOAP-SEC:id","Body");
CkXml_UpdateAttrAt(xml,"SOAP-ENV:Body|z:FooBar",TRUE,"xmlns:z","http://example.com");
gen = CkXmlDSigGen_Create();
// Indicate where the Signature will be inserted.
CkXmlDSigGen_putSigLocation(gen,"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"
CkXmlDSigGen_AddSameDocRef(gen,"Body","sha1","EXCL_C14N","","");
// (You can read about the SignedInfoPrefixList in the online reference documentation. It's optional..)
CkXmlDSigGen_putSignedInfoPrefixList(gen,"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.
CkXmlDSigGen_putKeyInfoType(gen,"X509Data");
CkXmlDSigGen_putX509Type(gen,"Certificate");
bUsePrivateKey = TRUE;
success = CkXmlDSigGen_SetX509Cert(gen,cert,bUsePrivateKey);
if (success != TRUE) {
printf("%s\n",CkXmlDSigGen_lastErrorText(gen));
success = CkPkcs11_CloseSession(pkcs11);
CkPkcs11_Dispose(pkcs11);
CkCert_Dispose(cert);
CkXml_Dispose(xml);
CkXmlDSigGen_Dispose(gen);
return;
}
// Everything's specified. Now create and insert the Signature
sbXml = CkStringBuilder_Create();
CkXml_putEmitCompact(xml,TRUE);
CkXml_GetXmlSb(xml,sbXml);
success = CkXmlDSigGen_CreateXmlDSigSb(gen,sbXml);
if (success != TRUE) {
printf("%s\n",CkXmlDSigGen_lastErrorText(gen));
success = CkPkcs11_CloseSession(pkcs11);
CkPkcs11_Dispose(pkcs11);
CkCert_Dispose(cert);
CkXml_Dispose(xml);
CkXmlDSigGen_Dispose(gen);
CkStringBuilder_Dispose(sbXml);
return;
}
// Examine the XML with the digital signature inserted
printf("%s\n",CkStringBuilder_getAsString(sbXml));
// --------------------------------------------------------------------------
// Revert to an unauthenticated session by calling Logout.
success = CkPkcs11_Logout(pkcs11);
if (success == FALSE) {
printf("%s\n",CkPkcs11_lastErrorText(pkcs11));
success = CkPkcs11_CloseSession(pkcs11);
CkPkcs11_Dispose(pkcs11);
CkCert_Dispose(cert);
CkXml_Dispose(xml);
CkXmlDSigGen_Dispose(gen);
CkStringBuilder_Dispose(sbXml);
return;
}
// When finished, close the session.
// It is important to close the session (memory leaks will occur if the session is not properly closed).
success = CkPkcs11_CloseSession(pkcs11);
if (success == FALSE) {
printf("%s\n",CkPkcs11_lastErrorText(pkcs11));
CkPkcs11_Dispose(pkcs11);
CkCert_Dispose(cert);
CkXml_Dispose(xml);
CkXmlDSigGen_Dispose(gen);
CkStringBuilder_Dispose(sbXml);
return;
}
printf("Success.\n");
CkPkcs11_Dispose(pkcs11);
CkCert_Dispose(cert);
CkXml_Dispose(xml);
CkXmlDSigGen_Dispose(gen);
CkStringBuilder_Dispose(sbXml);
}