1 /* ====================================================================
2 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * openssl-core@openssl.org.
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ====================================================================
49 * This product includes cryptographic software written by Eric Young
50 * (eay@cryptsoft.com). This product includes software written by Tim
51 * Hudson (tjh@cryptsoft.com).
61 #include <openssl/bio.h>
62 #include <openssl/err.h>
63 #include <openssl/rand.h>
65 typedef enum OPTION_choice {
66 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
67 OPT_OUT, OPT_ENGINE, OPT_RAND, OPT_BASE64, OPT_HEX
70 OPTIONS rand_options[] = {
71 {OPT_HELP_STR, 1, '-', "Usage: %s [flags] num\n"},
72 {OPT_HELP_STR, 1, '-', "Valid options are:\n"},
73 {"help", OPT_HELP, '-', "Display this summary"},
74 {"out", OPT_OUT, '>', "Output file"},
75 {"rand", OPT_RAND, 's',
76 "Load the file(s) into the random number generator"},
77 {"base64", OPT_BASE64, '-', "Base64 encode output"},
78 {"hex", OPT_HEX, '-', "Hex encode output"},
79 #ifndef OPENSSL_NO_ENGINE
80 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
85 int rand_main(int argc, char **argv)
88 char *inrand = NULL, *outfile = NULL, *prog;
90 int base64 = 0, hex = 0, i, num = -1, r, ret = 1;
92 prog = opt_init(argc, argv, rand_options);
93 while ((o = opt_next()) != OPT_EOF) {
98 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
101 opt_help(rand_options);
108 (void)setup_engine(opt_arg(), 0);
121 argc = opt_num_rest();
124 if (argc != 1 || (hex && base64))
126 if (sscanf(argv[0], "%d", &num) != 1 || num < 0)
129 app_RAND_load_file(NULL, (inrand != NULL));
131 BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
132 app_RAND_load_files(inrand));
134 out = bio_open_default(outfile, "w");
139 BIO *b64 = BIO_new(BIO_f_base64());
142 out = BIO_push(b64, out);
146 unsigned char buf[4096];
150 if (chunk > (int)sizeof(buf))
152 r = RAND_bytes(buf, chunk);
156 BIO_write(out, buf, chunk);
158 for (i = 0; i < chunk; i++)
159 BIO_printf(out, "%02x", buf[i]);
165 (void)BIO_flush(out);
167 app_RAND_write_file(NULL);