(Unicode C) Generate RSA Public/Private Key Pair and Export to PEM

Unicode C example code showing how to generate an RSA public/private key pair and export to PEM files.

Note: This example requires Chilkat v11.0.0 or greater.

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#include <C_CkRsaW.h>
#include <C_CkPrivateKeyW.h>
#include <C_CkPublicKeyW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkRsaW rsa;
    HCkPrivateKeyW privKey;
    HCkPublicKeyW pubKey;

    success = FALSE;

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

    rsa = CkRsaW_Create();

    // Generate a 2048-bit key.  Chilkat RSA supports
    // key sizes ranging from 512 bits to 8192 bits.
    privKey = CkPrivateKeyW_Create();
    success = CkRsaW_GenKey(rsa,2048,privKey);
    if (success == FALSE) {
        wprintf(L"%s\n",CkRsaW_lastErrorText(rsa));
        CkRsaW_Dispose(rsa);
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    pubKey = CkPublicKeyW_Create();
    CkPrivateKeyW_ToPublicKey(privKey,pubKey);

    // Save the private key in PEM format:
    success = CkPrivateKeyW_SavePemFile(privKey,L"privateKey.pem");
    if (success == FALSE) {
        wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey));
        CkRsaW_Dispose(rsa);
        CkPrivateKeyW_Dispose(privKey);
        CkPublicKeyW_Dispose(pubKey);
        return;
    }

    // Save the public key in PEM format:
    success = CkPublicKeyW_SavePemFile(pubKey,FALSE,L"publicKey.pem");
    if (success == FALSE) {
        wprintf(L"%s\n",CkPublicKeyW_lastErrorText(pubKey));
        CkRsaW_Dispose(rsa);
        CkPrivateKeyW_Dispose(privKey);
        CkPublicKeyW_Dispose(pubKey);
        return;
    }

    wprintf(L"Success.\n");


    CkRsaW_Dispose(rsa);
    CkPrivateKeyW_Dispose(privKey);
    CkPublicKeyW_Dispose(pubKey);

    }