(C) Generate an ECC Key

Demonstrates how to generate an ECC key.

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#include <C_CkGlobal.h>
#include <C_CkPrng.h>
#include <C_CkEcc.h>
#include <C_CkPrivateKey.h>

void ChilkatSample(void)
    {
    HCkGlobal chilkatGlob;
    BOOL success;
    HCkPrng fortuna;
    const char *entropy;
    HCkEcc ecc;
    HCkPrivateKey privKey;

    //  All Chilkat classes can be unlocked at once at the beginning of a program
    //  by calling UnlockBundle.  It requires a Bundle unlock code.
    chilkatGlob = CkGlobal_Create();
    success = CkGlobal_UnlockBundle(chilkatGlob,"Anything for 30-day trial.");
    if (success != TRUE) {
        printf("%s\n",CkGlobal_lastErrorText(chilkatGlob));
        CkGlobal_Dispose(chilkatGlob);
        return;
    }

    //  Create a Fortuna PRNG and seed it with system entropy.
    //  This will be our source of random data for generating the ECC private key.
    fortuna = CkPrng_Create();
    entropy = CkPrng_getEntropy(fortuna,32,"base64");
    success = CkPrng_AddEntropy(fortuna,entropy,"base64");

    ecc = CkEcc_Create();

    //  Generate a random ECC private key on the secp256r1 curve.
    //  Chilkat also supports other curves, such as secp384r1, secp521r1, and secp256k1.

    privKey = CkEcc_GenEccKey(ecc,"secp256r1",fortuna);
    if (CkEcc_getLastMethodSuccess(ecc) != TRUE) {
        printf("%s\n",CkEcc_lastErrorText(ecc));
        CkGlobal_Dispose(chilkatGlob);
        CkPrng_Dispose(fortuna);
        CkEcc_Dispose(ecc);
        return;
    }

    printf("%s\n",CkPrivateKey_getXml(privKey));

    //  Save the private key to PKCS8 encrypted PEM
    //  (The private key can be saved in a variety of different formats. See the online reference documentation.)
    success = CkPrivateKey_SavePkcs8EncryptedPemFile(privKey,"pemPassword","myPemFiles/eccKey123.pem");
    if (success != TRUE) {
        printf("%s\n",CkPrivateKey_lastErrorText(privKey));
    }

    CkPrivateKey_Dispose(privKey);

    printf("finished.\n");


    CkGlobal_Dispose(chilkatGlob);
    CkPrng_Dispose(fortuna);
    CkEcc_Dispose(ecc);

    }