Unicode C

Duplicate openssl smime -encrypt -binary -aes-256-cbc -in some_file.dat -out some_file.dat.enc -outform DER cert.crt

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Demonstrates how to encrypt to binary DER using 256-bit AES (CBC mode) as the underlying symmetric encryption algorithm, to produce PKCS7 enveloped data (binary DER).

Duplicates the following openssl command:

openssl smime -encrypt -binary -aes-256-cbc -in some_file.dat -out some_file.dat.enc -outform DER cert.crt

Unicode C

#include <C_CkCertW.h>
#include <C_CkBinDataW.h>
#include <C_CkCrypt2W.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkCertW cert;
    HCkBinDataW bd;
    HCkCrypt2W crypt;

    success = FALSE;

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

    cert = CkCertW_Create();
    success = CkCertW_LoadFromFile(cert,L"qa_data/openssl/EE.cer");
    if (success == FALSE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkCertW_Dispose(cert);
        return;
    }

    bd = CkBinDataW_Create();
    success = CkBinDataW_LoadFile(bd,L"qa_data/openssl/hello.txt");
    // Assuming success..

    crypt = CkCrypt2W_Create();
    success = CkCrypt2W_SetEncryptCert(crypt,cert);
    if (success == FALSE) {
        wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt));
        CkCertW_Dispose(cert);
        CkBinDataW_Dispose(bd);
        CkCrypt2W_Dispose(crypt);
        return;
    }

    CkCrypt2W_putCryptAlgorithm(crypt,L"PKI");

    // Indicate the underlying symmetric encryption to be used:
    CkCrypt2W_putPkcs7CryptAlg(crypt,L"aes");
    CkCrypt2W_putKeyLength(crypt,256);
    CkCrypt2W_putCipherMode(crypt,L"cbc");

    success = CkCrypt2W_CkEncryptFile(crypt,L"qa_data/openssl/hello.txt",L"qa_output/hello.txt.enc");
    if (success == FALSE) {
        wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt));
        CkCertW_Dispose(cert);
        CkBinDataW_Dispose(bd);
        CkCrypt2W_Dispose(crypt);
        return;
    }

    wprintf(L"Success.\n");


    CkCertW_Dispose(cert);
    CkBinDataW_Dispose(bd);
    CkCrypt2W_Dispose(crypt);

    }