(C) Write PKCS1 or PKCS8 Public Key PEM

Demonstrates how to write either PKCS1 or PKCS8 format PEM files. PKCS1 public keys have this PEM format:

-----BEGIN RSA PUBLIC KEY-----
BASE64 ENCODED DATA
-----END RSA PUBLIC KEY-----

-----BEGIN PUBLIC KEY-----
BASE64 ENCODED DATA
-----END PUBLIC KEY-----

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#include <C_CkGlobal.h>
#include <C_CkPem.h>

void ChilkatSample(void)
    {
    HCkGlobal chilkatGlob;
    BOOL success;
    HCkPem pem;
    int i;
    int numPublicKeys;

    // Unlock the Chilkat API.
    // Starting in v9.5.0.49, 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;
    }

    pem = CkPem_Create();

    // Load a public key from a PEM file.
    // (Assume the PEM contains at least one public key..)
    success = CkPem_LoadPemFile(pem,"/Users/chilkat/testData/pem/myPublicKey.pem");
    if (success != TRUE) {
        printf("%s\n",CkPem_lastErrorText(pem));
        CkGlobal_Dispose(chilkatGlob);
        CkPem_Dispose(pem);
        return;
    }

    numPublicKeys = CkPem_getNumPublicKeys(pem);
    if (numPublicKeys == 0) {
        printf("%s\n",("Error: Expected the PEM to contain public keys."));
        CkGlobal_Dispose(chilkatGlob);
        CkPem_Dispose(pem);
        return;
    }

    // Get each public key as PEM, first in PKCS1 format, then in PKCS8.
    for (i = 1; i <= numPublicKeys; i++) {

        // First output to PKCS1 PEM format:
        printf("This is PKCS1 format:\n");
        CkPem_putPublicKeyFormat(pem,"pkcs1");
        printf("%s\n",CkPem_toPem(pem));

        // Now PKCS8 PEM format:
        printf("This is PKCS8 format:\n");
        CkPem_putPublicKeyFormat(pem,"pkcs8");
        printf("%s\n",CkPem_toPem(pem));

    }



    CkGlobal_Dispose(chilkatGlob);
    CkPem_Dispose(pem);

    }