#include <stdio.h>
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/rand.h>
#include <openssl/evp.h>
#include <openssl/crypto.h>

#define CIPHER	"aes-256-cbc"

int do_encryption(char* input_file_path, char* output_file_path, int is_encrypt);