(Unicode C) Decrypt a .p7m File (using a PFX)

Unicode C sample code showing how to decrypt a .p7m using a .p12 / .pfx certificate w/ private key.

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkCrypt2W.h>

void ChilkatSample(void)
    {
    HCkCrypt2W crypt;
    const wchar_t *pfxPath;
    const wchar_t *pfxPassword;
    BOOL success;
    const wchar_t *inPath;
    const wchar_t *outPath;

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

    crypt = CkCrypt2W_Create();

    // Use a digital certificate and private key from a PFX file (.pfx or .p12).
    pfxPath = L"myCertAndKey.pfx";
    pfxPassword = L"test123";

    success = CkCrypt2W_AddPfxSourceFile(crypt,pfxPath,pfxPassword);
    if (success != TRUE) {
        wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt));
        CkCrypt2W_Dispose(crypt);
        return;
    }

    // Set the  outPath to whatever is appropriate.
    // If you are decrypting a PDF, your output might be "out.pdf"...
    inPath = L"smime.p7m";
    outPath = L"original.txt";

    // Indicate that we're doing public key decryption (i.e. PKCS7)
    CkCrypt2W_putCryptAlgorithm(crypt,L"pki");

    success = CkCrypt2W_CkDecryptFile(crypt,inPath,outPath);
    if (success == FALSE) {
        wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt));
        CkCrypt2W_Dispose(crypt);
        return;
    }

    wprintf(L"Success.\n");


    CkCrypt2W_Dispose(crypt);

    }