(C) RSA Import Public Key from Certificate PEM

Uses a certificate's public key for RSA encryption. The public key from the certificate .pem file is used.

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

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#include <C_CkCert.h>
#include <C_CkPublicKey.h>
#include <C_CkRsa.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkCert cert;
    HCkPublicKey pubKey;
    HCkRsa rsa;
    const char *encryptedStr;

    success = FALSE;

    cert = CkCert_Create();

    success = CkCert_LoadFromFile(cert,"qa_data/pem/mf_public_rsa.pem");
    if (success == FALSE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkCert_Dispose(cert);
        return;
    }

    pubKey = CkPublicKey_Create();
    CkCert_GetPublicKey(cert,pubKey);

    rsa = CkRsa_Create();
    CkRsa_UsePublicKey(rsa,pubKey);

    CkRsa_putEncodingMode(rsa,"base64");
    encryptedStr = CkRsa_encryptStringENC(rsa,"hello",FALSE);
    printf("encrypted string = %s\n",encryptedStr);


    CkCert_Dispose(cert);
    CkPublicKey_Dispose(pubKey);
    CkRsa_Dispose(rsa);

    }