1/*-
2 * Copyright (c) 2008 Damien Bergamini <damien.bergamini@free.fr>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include <sys/types.h>
18#include <crypto/aes.h>
19#include <crypto/cmac.h>
20#include <stdio.h>
21#include <string.h>
22
23static void
24print_hex(char *str, unsigned char *buf, int len)
25{
26      int     i;
27
28      for ( i=0; i<len; i++ ) {
29          if ( (i % 16) == 0 && i != 0 ) printf("%s", str);
30          printf("%02x", buf[i]);
31          if ( (i % 4) == 3 ) printf(" ");
32          if ( (i % 16) == 15 ) printf("\n");
33      }
34      if ( (i % 16) != 0 ) printf("\n");
35}
36
37static void
38print128(unsigned char *bytes)
39{
40      int         j;
41      for (j=0; j<16;j++) {
42          printf("%02x",bytes[j]);
43          if ( (j%4) == 3 ) printf(" ");
44      }
45}
46
47int
48main(void)
49{
50      unsigned char T[16];
51      unsigned char M[64] = {
52          0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
53          0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
54          0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c,
55          0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
56          0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11,
57          0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
58          0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17,
59          0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10
60      };
61      unsigned char key[16] = {
62          0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
63          0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c
64      };
65      AES_CMAC_CTX ctx;
66
67      printf("--------------------------------------------------\n");
68      printf("K              "); print128(key); printf("\n");
69
70      printf("\nExample 1: len = 0\n");
71      printf("M              "); printf("<empty string>\n");
72
73      AES_CMAC_SetKey(&ctx, key);
74      AES_CMAC_Init(&ctx);
75      AES_CMAC_Update(&ctx, M, 0);
76      AES_CMAC_Final(T, &ctx);
77      printf("AES_CMAC       "); print128(T); printf("\n");
78
79      printf("\nExample 2: len = 16\n");
80      printf("M              "); print_hex("                ",M,16);
81
82      AES_CMAC_SetKey(&ctx, key);
83      AES_CMAC_Init(&ctx);
84      AES_CMAC_Update(&ctx, M, 16);
85      AES_CMAC_Final(T, &ctx);
86      printf("AES_CMAC       "); print128(T); printf("\n");
87      printf("\nExample 3: len = 40\n");
88      printf("M              "); print_hex("               ",M,40);
89
90      AES_CMAC_SetKey(&ctx, key);
91      AES_CMAC_Init(&ctx);
92      AES_CMAC_Update(&ctx, M, 40);
93      AES_CMAC_Final(T, &ctx);
94      printf("AES_CMAC       "); print128(T); printf("\n");
95
96      printf("\nExample 4: len = 64\n");
97      printf("M              "); print_hex("               ",M,64);
98      AES_CMAC_SetKey(&ctx, key);
99      AES_CMAC_Init(&ctx);
100      AES_CMAC_Update(&ctx, M, 64);
101      AES_CMAC_Final(T, &ctx);
102      printf("AES_CMAC       "); print128(T); printf("\n");
103
104      printf("\nExample 4bis: len = 64\n");
105      printf("M              "); print_hex("               ",M,64);
106      AES_CMAC_SetKey(&ctx, key);
107      AES_CMAC_Init(&ctx);
108      AES_CMAC_Update(&ctx, M, 40);
109      AES_CMAC_Update(&ctx, M + 40, 24);
110      AES_CMAC_Final(T, &ctx);
111      printf("AES_CMAC       "); print128(T); printf("\n");
112
113      printf("\nExample 4ter: len = 64\n");
114      printf("M              "); print_hex("               ",M,64);
115      AES_CMAC_SetKey(&ctx, key);
116      AES_CMAC_Init(&ctx);
117      AES_CMAC_Update(&ctx, M, 16);
118      AES_CMAC_Update(&ctx, M + 16, 16);
119      AES_CMAC_Update(&ctx, M + 32, 10);
120      AES_CMAC_Update(&ctx, M + 42, 0);
121      AES_CMAC_Update(&ctx, M + 42, 14);
122      AES_CMAC_Update(&ctx, M + 56, 8);
123      AES_CMAC_Final(T, &ctx);
124      printf("AES_CMAC       "); print128(T); printf("\n");
125
126      printf("--------------------------------------------------\n");
127
128      return 0;
129}
130
131void
132explicit_bzero(void *b, size_t len)
133{
134	bzero(b, len);
135}
136