/*
*   Byte-oriented AES-256 implementation.
*   All lookup tables replaced with 'on the fly' calculations.
*
*   Copyright (c) 2007 Ilya O. Levin, http://www.literatecode.com
*
*   Permission to use, copy, modify, and distribute this software for any
*   purpose with or without fee is hereby granted, provided that the above
*   copyright notice and this permission notice appear in all copies.
*
*   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
*   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
*   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
*   ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
*   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
*   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
*   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <sys/times.h>
#include <sys/time.h>
#include "aes256.h"

#define DUMP(s, i, buf, sz)  {printf(s);                   \
                              for (i = 0; i < (sz);i++)    \
                                  printf("%02x ", buf[i]); \
                              printf("\n");}


int main (int argc, char *argv[])
{
    aes256_context ctx;
    uint8_t key[32];
    uint8_t buf[16], i;
	long start, end, j;

    /* put a test vector */
    for (i = 0; i < sizeof(buf);i++) buf[i] = i * 16 + i;
    for (i = 0; i < sizeof(key);i++) key[i] = i;

    DUMP("txt: ", i, buf, sizeof(buf));
    DUMP("key: ", i, key, sizeof(key));
    printf("---\n");

    aes256_init(&ctx, key);
	start = clock();
	for (j=0; j < 1000; j++)
	{
	    aes256_encrypt_ecb(&ctx, buf);
  	}
	end = clock();

	printf("Speed %f blocks/s\n", (float)j/((float)(end-start)/CLOCKS_PER_SEC));

    DUMP("enc: ", i, buf, sizeof(buf));
    printf("tst: 8e a2 b7 ca 51 67 45 bf ea fc 49 90 4b 49 60 89\n");

    aes256_init(&ctx, key);
    aes256_decrypt_ecb(&ctx, buf);
    DUMP("dec: ", i, buf, sizeof(buf));

    aes256_done(&ctx);

    return 0;
} /* main */