Unicode C

Write PKCS1 or PKCS8 Public Key PEM

See more PEM Examples

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-----

PKCS8 public keys have this PEM format:

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

Unicode C

#include <C_CkPemW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkPemW pem;
    int i;
    int numPublicKeys;

    success = FALSE;

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

    success = FALSE;

    pem = CkPemW_Create();

    // Load a public key from a PEM file.
    // (Assume the PEM contains at least one public key..)
    success = CkPemW_LoadPemFile(pem,L"/Users/chilkat/testData/pem/myPublicKey.pem");
    if (success != TRUE) {
        wprintf(L"%s\n",CkPemW_lastErrorText(pem));
        CkPemW_Dispose(pem);
        return;
    }

    numPublicKeys = CkPemW_getNumPublicKeys(pem);
    if (numPublicKeys == 0) {
        wprintf(L"%s\n",(L"Error: Expected the PEM to contain public keys."));
        CkPemW_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:
        wprintf(L"This is PKCS1 format:\n");
        CkPemW_putPublicKeyFormat(pem,L"pkcs1");
        wprintf(L"%s\n",CkPemW_toPem(pem));

        // Now PKCS8 PEM format:
        wprintf(L"This is PKCS8 format:\n");
        CkPemW_putPublicKeyFormat(pem,L"pkcs8");
        wprintf(L"%s\n",CkPemW_toPem(pem));

    }



    CkPemW_Dispose(pem);

    }