int sec_init(int socket, int verbose, int reliable, int secure)
{

    char get_key[] = "get public key";
    int length = strlen( get_key );
    char *public_key = NULL;
    int public_len = PUB_KEY_SIZE;
    int i;
    char out[ENCRYPTED_KEY_SIZE];

    frag_init();

    if(!secure)
        return 1;

    /* Client sends 'get public key' to the server, using frag_send_data() */

    frag_send_data(socket, get_key, length, verbose, reliable);
    /* Receive the string that the server sends, which will contain its public key. */

    frag_receive_data(socket, &public_key, &public_len, verbose, reliable);
    /* Generate a string of 160 random bits for use as the secret key.  */
    time_t seconds;
    time(&seconds);
    srand((unsigned int) seconds);
    for (i = 0; i < SECRET_KEY_SIZE; i++)
    {
        secret_key[i] = (unsigned char) rand();
    }
    /* Encrypt the random string with the public key. */

    sec_pk_encrypt((char*) &secret_key[SECRET_KEY_SIZE], &out[ENCRYPTED_KEY_SIZE], &public_key[public_len]);
    /* Send the encrypted string to the server. */
    frag_send_data(socket, out, ENCRYPTED_KEY_SIZE, verbose, reliable);

    char *server_response = calloc(MAX_DATA,sizeof(char));
    int server_len;
    frag_receive_data(socket, &server_response, &server_len, verbose, reliable);
    fprintf(stderr, "Received server resp\n");
    if (!strcmp(server_response, "OK")) return 1;
    return 0;
}