Unicode C

Export a Traditional Private Key as Encoded Text

Demonstrates the Chilkat PrivateKey.GetPkcs1ENC method, which exports the key as the traditional/preferred unencrypted DER and encodes the DER bytes as text. The only argument names the binary encoding, such as base64 or hex.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the encoded-text form of the traditional DER representation — the same bytes the traditional PEM wraps, but returned as a string in the encoding you choose. Use it when a legacy consumer needs the traditional key structure delivered as text rather than as a PEM file. The DER is unencrypted, so the result is sensitive.

Chilkat Unicode C Downloads

Download Chilkat for Unicode C

Unicode C

#include <C_CkPrivateKeyW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkPrivateKeyW privKey;
    const wchar_t *encoded;

    success = FALSE;

    //  Load a private key to export.
    privKey = CkPrivateKeyW_Create();
    success = CkPrivateKeyW_LoadPemFile(privKey,L"qa_data/private.pem");
    if (success == FALSE) {
        wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey));
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    //  Export as the traditional/preferred unencrypted DER, then encode the DER bytes as text.  The
    //  only argument names the binary encoding, such as "base64" or "hex".
    encoded = CkPrivateKeyW_getPkcs1ENC(privKey,L"base64");
    if (CkPrivateKeyW_getLastMethodSuccess(privKey) == FALSE) {
        wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey));
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    wprintf(L"%s\n",encoded);


    CkPrivateKeyW_Dispose(privKey);

    }