diff options
Diffstat (limited to 'netwerk/srtp/src/crypto/test/aes_calc.c')
| -rw-r--r-- | netwerk/srtp/src/crypto/test/aes_calc.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/netwerk/srtp/src/crypto/test/aes_calc.c b/netwerk/srtp/src/crypto/test/aes_calc.c new file mode 100644 index 000000000..a5b390dd3 --- /dev/null +++ b/netwerk/srtp/src/crypto/test/aes_calc.c @@ -0,0 +1,154 @@ +/* + * aes_calc.c + * + * A simple AES calculator for generating AES encryption values + * + * David A. McGrew + * Cisco Systems, Inc. + */ +/* + * + * Copyright (c) 2001-2006, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* + + Example usage (with first NIST FIPS 197 test case): + +[sh]$ test/aes_calc 000102030405060708090a0b0c0d0e0f 00112233445566778899aabbccddeeff -v + plaintext: 00112233445566778899aabbccddeeff + key: 000102030405060708090a0b0c0d0e0f + ciphertext: 69c4e0d86a7b0430d8cdb78070b4c55a + + */ + +#include "aes.h" +#include <stdio.h> +#include <string.h> + +void +usage(char *prog_name) { + printf("usage: %s <key> <plaintext> [-v]\n", prog_name); + exit(255); +} + +#define AES_MAX_KEY_LEN 32 + +int +main (int argc, char *argv[]) { + v128_t data; + uint8_t key[AES_MAX_KEY_LEN]; + aes_expanded_key_t exp_key; + int key_len, len; + int verbose; + err_status_t status; + + if (argc == 3) { + /* we're not in verbose mode */ + verbose = 0; + } else if (argc == 4) { + if (strncmp(argv[3], "-v", 2) == 0) { + /* we're in verbose mode */ + verbose = 1; + } else { + /* unrecognized flag, complain and exit */ + usage(argv[0]); + } + } else { + /* we've been fed the wrong number of arguments - compain and exit */ + usage(argv[0]); + } + + /* read in key, checking length */ + if (strlen(argv[1]) > AES_MAX_KEY_LEN*2) { + fprintf(stderr, + "error: too many digits in key " + "(should be at most %d hexadecimal digits, found %u)\n", + AES_MAX_KEY_LEN*2, (unsigned)strlen(argv[1])); + exit(1); + } + len = hex_string_to_octet_string((char*)key, argv[1], AES_MAX_KEY_LEN*2); + /* check that hex string is the right length */ + if (len != 32 && len != 48 && len != 64) { + fprintf(stderr, + "error: bad number of digits in key " + "(should be 32/48/64 hexadecimal digits, found %d)\n", + len); + exit(1); + } + key_len = len/2; + + /* read in plaintext, checking length */ + if (strlen(argv[2]) > 16*2) { + fprintf(stderr, + "error: too many digits in plaintext " + "(should be %d hexadecimal digits, found %u)\n", + 16*2, (unsigned)strlen(argv[2])); + exit(1); + } + len = hex_string_to_octet_string((char *)(&data), argv[2], 16*2); + /* check that hex string is the right length */ + if (len < 16*2) { + fprintf(stderr, + "error: too few digits in plaintext " + "(should be %d hexadecimal digits, found %d)\n", + 16*2, len); + exit(1); + } + + if (verbose) { + /* print out plaintext */ + printf("plaintext:\t%s\n", octet_string_hex_string((uint8_t *)&data, 16)); + } + + /* encrypt plaintext */ + status = aes_expand_encryption_key(key, key_len, &exp_key); + if (status) { + fprintf(stderr, + "error: AES key expansion failed.\n"); + exit(1); + } + + aes_encrypt(&data, &exp_key); + + /* write ciphertext to output */ + if (verbose) { + printf("key:\t\t%s\n", octet_string_hex_string(key, key_len)); + printf("ciphertext:\t"); + } + printf("%s\n", v128_hex_string(&data)); + + return 0; +} + |