1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/netwerk/srtp/src/crypto/test/aes_calc.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,154 @@
1.4 +/*
1.5 + * aes_calc.c
1.6 + *
1.7 + * A simple AES calculator for generating AES encryption values
1.8 + *
1.9 + * David A. McGrew
1.10 + * Cisco Systems, Inc.
1.11 + */
1.12 +/*
1.13 + *
1.14 + * Copyright (c) 2001-2006, Cisco Systems, Inc.
1.15 + * All rights reserved.
1.16 + *
1.17 + * Redistribution and use in source and binary forms, with or without
1.18 + * modification, are permitted provided that the following conditions
1.19 + * are met:
1.20 + *
1.21 + * Redistributions of source code must retain the above copyright
1.22 + * notice, this list of conditions and the following disclaimer.
1.23 + *
1.24 + * Redistributions in binary form must reproduce the above
1.25 + * copyright notice, this list of conditions and the following
1.26 + * disclaimer in the documentation and/or other materials provided
1.27 + * with the distribution.
1.28 + *
1.29 + * Neither the name of the Cisco Systems, Inc. nor the names of its
1.30 + * contributors may be used to endorse or promote products derived
1.31 + * from this software without specific prior written permission.
1.32 + *
1.33 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.34 + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.35 + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
1.36 + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
1.37 + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
1.38 + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1.39 + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1.40 + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.41 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1.42 + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.43 + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
1.44 + * OF THE POSSIBILITY OF SUCH DAMAGE.
1.45 + *
1.46 + */
1.47 +
1.48 +/*
1.49 +
1.50 + Example usage (with first NIST FIPS 197 test case):
1.51 +
1.52 +[sh]$ test/aes_calc 000102030405060708090a0b0c0d0e0f 00112233445566778899aabbccddeeff -v
1.53 + plaintext: 00112233445566778899aabbccddeeff
1.54 + key: 000102030405060708090a0b0c0d0e0f
1.55 + ciphertext: 69c4e0d86a7b0430d8cdb78070b4c55a
1.56 +
1.57 + */
1.58 +
1.59 +#include "aes.h"
1.60 +#include <stdio.h>
1.61 +#include <string.h>
1.62 +
1.63 +void
1.64 +usage(char *prog_name) {
1.65 + printf("usage: %s <key> <plaintext> [-v]\n", prog_name);
1.66 + exit(255);
1.67 +}
1.68 +
1.69 +#define AES_MAX_KEY_LEN 32
1.70 +
1.71 +int
1.72 +main (int argc, char *argv[]) {
1.73 + v128_t data;
1.74 + uint8_t key[AES_MAX_KEY_LEN];
1.75 + aes_expanded_key_t exp_key;
1.76 + int key_len, len;
1.77 + int verbose;
1.78 + err_status_t status;
1.79 +
1.80 + if (argc == 3) {
1.81 + /* we're not in verbose mode */
1.82 + verbose = 0;
1.83 + } else if (argc == 4) {
1.84 + if (strncmp(argv[3], "-v", 2) == 0) {
1.85 + /* we're in verbose mode */
1.86 + verbose = 1;
1.87 + } else {
1.88 + /* unrecognized flag, complain and exit */
1.89 + usage(argv[0]);
1.90 + }
1.91 + } else {
1.92 + /* we've been fed the wrong number of arguments - compain and exit */
1.93 + usage(argv[0]);
1.94 + }
1.95 +
1.96 + /* read in key, checking length */
1.97 + if (strlen(argv[1]) > AES_MAX_KEY_LEN*2) {
1.98 + fprintf(stderr,
1.99 + "error: too many digits in key "
1.100 + "(should be at most %d hexadecimal digits, found %u)\n",
1.101 + AES_MAX_KEY_LEN*2, (unsigned)strlen(argv[1]));
1.102 + exit(1);
1.103 + }
1.104 + len = hex_string_to_octet_string((char*)key, argv[1], AES_MAX_KEY_LEN*2);
1.105 + /* check that hex string is the right length */
1.106 + if (len != 32 && len != 48 && len != 64) {
1.107 + fprintf(stderr,
1.108 + "error: bad number of digits in key "
1.109 + "(should be 32/48/64 hexadecimal digits, found %d)\n",
1.110 + len);
1.111 + exit(1);
1.112 + }
1.113 + key_len = len/2;
1.114 +
1.115 + /* read in plaintext, checking length */
1.116 + if (strlen(argv[2]) > 16*2) {
1.117 + fprintf(stderr,
1.118 + "error: too many digits in plaintext "
1.119 + "(should be %d hexadecimal digits, found %u)\n",
1.120 + 16*2, (unsigned)strlen(argv[2]));
1.121 + exit(1);
1.122 + }
1.123 + len = hex_string_to_octet_string((char *)(&data), argv[2], 16*2);
1.124 + /* check that hex string is the right length */
1.125 + if (len < 16*2) {
1.126 + fprintf(stderr,
1.127 + "error: too few digits in plaintext "
1.128 + "(should be %d hexadecimal digits, found %d)\n",
1.129 + 16*2, len);
1.130 + exit(1);
1.131 + }
1.132 +
1.133 + if (verbose) {
1.134 + /* print out plaintext */
1.135 + printf("plaintext:\t%s\n", octet_string_hex_string((uint8_t *)&data, 16));
1.136 + }
1.137 +
1.138 + /* encrypt plaintext */
1.139 + status = aes_expand_encryption_key(key, key_len, &exp_key);
1.140 + if (status) {
1.141 + fprintf(stderr,
1.142 + "error: AES key expansion failed.\n");
1.143 + exit(1);
1.144 + }
1.145 +
1.146 + aes_encrypt(&data, &exp_key);
1.147 +
1.148 + /* write ciphertext to output */
1.149 + if (verbose) {
1.150 + printf("key:\t\t%s\n", octet_string_hex_string(key, key_len));
1.151 + printf("ciphertext:\t");
1.152 + }
1.153 + printf("%s\n", v128_hex_string(&data));
1.154 +
1.155 + return 0;
1.156 +}
1.157 +
