Unicode C

Load a Private Key from a PKCS #1 File

Demonstrates the Chilkat PrivateKey.LoadPkcs1File method, which loads a private key from a file. The only argument is the file path. Despite the historical PKCS #1 name, it accepts any supported unencrypted private-key representation.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

Background: PKCS #1 is the older, RSA-specific key format — the BEGIN RSA PRIVATE KEY block still common from OpenSSL. This method reads it, and like the other content-inspecting loaders it also accepts other unencrypted representations, so it is forgiving of what is actually in the file. For unknown or mixed formats, prefer LoadAnyFormatFile.

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Unicode C

#include <C_CkPrivateKeyW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkPrivateKeyW privKey;

    success = FALSE;

    //  Demonstrates the PrivateKey.LoadPkcs1File method, which loads a private key from a file.  The
    //  only argument is the file path.  Despite the historical PKCS #1 name, it accepts any supported
    //  unencrypted private-key representation.

    privKey = CkPrivateKeyW_Create();

    success = CkPrivateKeyW_LoadPkcs1File(privKey,L"qa_data/private_pkcs1.pem");
    if (success == FALSE) {
        wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey));
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    wprintf(L"Loaded a %s private key.\n",CkPrivateKeyW_keyType(privKey));


    CkPrivateKeyW_Dispose(privKey);

    }