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/*-
* Copyright (c) 2008 Damien Bergamini <damien.bergamini@free.fr>
*
* 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 <sys/types.h>
#include <crypto/aes.h>
#include <crypto/cmac.h>
#include <stdio.h>
#include <string.h>
static void
print_hex(char *str, unsigned char *buf, int len)
{
int i;
for ( i=0; i<len; i++ ) {
if ( (i % 16) == 0 && i != 0 ) printf("%s", str);
printf("%02x", buf[i]);
if ( (i % 4) == 3 ) printf(" ");
if ( (i % 16) == 15 ) printf("\n");
}
if ( (i % 16) != 0 ) printf("\n");
}
static void
print128(unsigned char *bytes)
{
int j;
for (j=0; j<16;j++) {
printf("%02x",bytes[j]);
if ( (j%4) == 3 ) printf(" ");
}
}
int
main(void)
{
unsigned char T[16];
unsigned char M[64] = {
0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c,
0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11,
0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17,
0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10
};
unsigned char key[16] = {
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c
};
AES_CMAC_CTX ctx;
printf("--------------------------------------------------\n");
printf("K "); print128(key); printf("\n");
printf("\nExample 1: len = 0\n");
printf("M "); printf("<empty string>\n");
AES_CMAC_SetKey(&ctx, key);
AES_CMAC_Init(&ctx);
AES_CMAC_Update(&ctx, M, 0);
AES_CMAC_Final(T, &ctx);
printf("AES_CMAC "); print128(T); printf("\n");
printf("\nExample 2: len = 16\n");
printf("M "); print_hex(" ",M,16);
AES_CMAC_SetKey(&ctx, key);
AES_CMAC_Init(&ctx);
AES_CMAC_Update(&ctx, M, 16);
AES_CMAC_Final(T, &ctx);
printf("AES_CMAC "); print128(T); printf("\n");
printf("\nExample 3: len = 40\n");
printf("M "); print_hex(" ",M,40);
AES_CMAC_SetKey(&ctx, key);
AES_CMAC_Init(&ctx);
AES_CMAC_Update(&ctx, M, 40);
AES_CMAC_Final(T, &ctx);
printf("AES_CMAC "); print128(T); printf("\n");
printf("\nExample 4: len = 64\n");
printf("M "); print_hex(" ",M,64);
AES_CMAC_SetKey(&ctx, key);
AES_CMAC_Init(&ctx);
AES_CMAC_Update(&ctx, M, 64);
AES_CMAC_Final(T, &ctx);
printf("AES_CMAC "); print128(T); printf("\n");
printf("\nExample 4bis: len = 64\n");
printf("M "); print_hex(" ",M,64);
AES_CMAC_SetKey(&ctx, key);
AES_CMAC_Init(&ctx);
AES_CMAC_Update(&ctx, M, 40);
AES_CMAC_Update(&ctx, M + 40, 24);
AES_CMAC_Final(T, &ctx);
printf("AES_CMAC "); print128(T); printf("\n");
printf("\nExample 4ter: len = 64\n");
printf("M "); print_hex(" ",M,64);
AES_CMAC_SetKey(&ctx, key);
AES_CMAC_Init(&ctx);
AES_CMAC_Update(&ctx, M, 16);
AES_CMAC_Update(&ctx, M + 16, 16);
AES_CMAC_Update(&ctx, M + 32, 10);
AES_CMAC_Update(&ctx, M + 42, 0);
AES_CMAC_Update(&ctx, M + 42, 14);
AES_CMAC_Update(&ctx, M + 56, 8);
AES_CMAC_Final(T, &ctx);
printf("AES_CMAC "); print128(T); printf("\n");
printf("--------------------------------------------------\n");
return 0;
}
void
explicit_bzero(void *b, size_t len)
{
bzero(b, len);
}
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