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(Unicode C) Create PKCS7 Signed File (.p7m)Demonstrates how to sign a file to create a .p7m that contains both the file contents and the signature.
#include <C_CkCrypt2W.h> #include <C_CkCertStoreW.h> #include <C_CkCertW.h> void ChilkatSample(void) { HCkCrypt2W crypt; HCkCertStoreW certStore; BOOL success; HCkCertW cert; const wchar_t *inFile; const wchar_t *outFile; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. crypt = CkCrypt2W_Create(); certStore = CkCertStoreW_Create(); // Load a PFX file into a certificate store object. success = CkCertStoreW_LoadPfxFile(certStore,L"myPfx.pfx",L"pfxPassword"); if (success != TRUE) { wprintf(L"%s\n",CkCertStoreW_lastErrorText(certStore)); CkCrypt2W_Dispose(crypt); CkCertStoreW_Dispose(certStore); return; } // Get the certificate by subject common name. // This should be the cert within the PFX that also // has a private key (also stored within the PFX). cert = CkCertStoreW_FindCertBySubjectCN(certStore,L"myCert"); if (CkCertStoreW_getLastMethodSuccess(certStore) == FALSE) { wprintf(L"%s\n",CkCertStoreW_lastErrorText(certStore)); CkCrypt2W_Dispose(crypt); CkCertStoreW_Dispose(certStore); return; } // Tell the crypt object to use the certificate for signing: success = CkCrypt2W_SetSigningCert(crypt,cert); // Sign a file, producing a .p7m as output. // The input file is unchanged, the test.p7m contains the // contents of the input file and the signature. inFile = L"test.txt"; outFile = L"testp7m"; success = CkCrypt2W_CreateP7M(crypt,inFile,outFile); if (success != TRUE) { wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt)); CkCrypt2W_Dispose(crypt); CkCertStoreW_Dispose(certStore); return; } wprintf(L"Success!\n"); CkCrypt2W_Dispose(crypt); CkCertStoreW_Dispose(certStore); } |
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