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(Unicode C) Verify XML Digital SignatureVerifies XML signatures in an XML file.
#include <C_CkStringBuilderW.h> #include <C_CkXmlDSigW.h> void ChilkatSample(void) { HCkStringBuilderW sbXml; BOOL success; HCkXmlDSigW dsig; int i; BOOL bVerifyReferenceDigests; BOOL bVerified; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. sbXml = CkStringBuilderW_Create(); success = CkStringBuilderW_LoadFile(sbXml,L"qa_data/xml_dsig_verify/csioz_sample.xml",L"utf-8"); if (success != TRUE) { wprintf(L"Failed to load XML file.\n"); CkStringBuilderW_Dispose(sbXml); return; } dsig = CkXmlDSigW_Create(); // First load the XML containing the signatures to be verified. success = CkXmlDSigW_LoadSignatureSb(dsig,sbXml); if (success != TRUE) { wprintf(L"%s\n",CkXmlDSigW_lastErrorText(dsig)); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(dsig); return; } // It's possible that an XML document can contain multiple signatures. // Each can be verified as follows: i = 0; while (i < CkXmlDSigW_getNumSignatures(dsig)) { // Select the Nth signature by setting the Selector property. CkXmlDSigW_putSelector(dsig,i); // The bVerifyReferenceDigests argument determines if we want // to also verify each reference digest. If set to FALSE, // then only the SignedInfo part of the Signature is verified. bVerifyReferenceDigests = TRUE; bVerified = CkXmlDSigW_VerifySignature(dsig,bVerifyReferenceDigests); wprintf(L"Signature %d verified = %d\n",i + 1,bVerified); i = i + 1; } CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(dsig); } |
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