superwills

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <openssl/rsa.h>
#include <openssl/engine.h>
#include <openssl/pem.h>

// I'm not using BIO for base64 encoding/decoding.  It is difficult to use.
// Using superwills' Nibble And A Half instead