diff options
Diffstat (limited to 'netwerk/srtp/src/crypto/test/rand_gen.c')
| -rw-r--r-- | netwerk/srtp/src/crypto/test/rand_gen.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/netwerk/srtp/src/crypto/test/rand_gen.c b/netwerk/srtp/src/crypto/test/rand_gen.c new file mode 100644 index 000000000..ccea097f2 --- /dev/null +++ b/netwerk/srtp/src/crypto/test/rand_gen.c @@ -0,0 +1,140 @@ +/* + * rand_gen.c + * + * a random source (random number generator) + * + * 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. + * + */ + + +#include <stdio.h> /* for printf() */ +#include <unistd.h> /* for getopt() */ +#include "crypto_kernel.h" + +/* + * MAX_PRINT_STRING_LEN is defined in datatypes.h, and is the length + * of the largest hexadecimal string that can be generated by the + * function octet_string_hex_string(). + */ + +#define BUF_LEN (MAX_PRINT_STRING_LEN/2) + +void +usage(char *prog_name) { + printf("usage: %s -n <num_bytes> [-l][ -d debug_module ]*\n" + " -n <num> output <num> random bytes, where <num>" + " is between zero and %d\n" + " -l list the avaliable debug modules\n" + " -d <mod> turn on debugging module <mod>\n", + prog_name, BUF_LEN); + exit(255); +} + +int +main (int argc, char *argv[]) { + extern char *optarg; + int q; + int num_octets = 0; + unsigned do_list_mods = 0; + err_status_t status; + + if (argc == 1) + usage(argv[0]); + + /* initialize kernel - we need to do this before anything else */ + status = crypto_kernel_init(); + if (status) { + printf("error: crypto_kernel init failed\n"); + exit(1); + } + + /* process input arguments */ + while (1) { + q = getopt(argc, argv, "ld:n:"); + if (q == -1) + break; + switch (q) { + case 'd': + status = crypto_kernel_set_debug_module(optarg, 1); + if (status) { + printf("error: set debug module (%s) failed\n", optarg); + exit(1); + } + break; + case 'l': + do_list_mods = 1; + break; + case 'n': + num_octets = atoi(optarg); + if (num_octets < 0 || num_octets > BUF_LEN) + usage(argv[0]); + break; + default: + usage(argv[0]); + } + } + + if (do_list_mods) { + status = crypto_kernel_list_debug_modules(); + if (status) { + printf("error: list of debug modules failed\n"); + exit(1); + } + } + + if (num_octets > 0) { + uint8_t buffer[BUF_LEN]; + + status = crypto_get_random(buffer, num_octets); + if (status) { + printf("error: failure in random source\n"); + } else { + printf("%s\n", octet_string_hex_string(buffer, num_octets)); + } + } + + status = crypto_kernel_shutdown(); + if (status) { + printf("error: crypto_kernel shutdown failed\n"); + exit(1); + } + + return 0; +} + |