230 lines
6.9 KiB
C
230 lines
6.9 KiB
C
/* apps/rand.c */
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/* ====================================================================
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* Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include "apps.h"
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/rand.h>
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#undef PROG
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#define PROG rand_main
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/*-
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* -out file - write to file
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* -rand file:file - PRNG seed files
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* -base64 - base64 encode output
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* -hex - hex encode output
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* num - write 'num' bytes
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*/
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int MAIN(int, char **);
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int MAIN(int argc, char **argv)
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{
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int i, r, ret = 1;
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int badopt;
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char *outfile = NULL;
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char *inrand = NULL;
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int base64 = 0;
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int hex = 0;
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BIO *out = NULL;
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int num = -1;
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#ifndef OPENSSL_NO_ENGINE
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char *engine = NULL;
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#endif
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apps_startup();
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if (bio_err == NULL)
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if ((bio_err = BIO_new(BIO_s_file())) != NULL)
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BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
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if (!load_config(bio_err, NULL))
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goto err;
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badopt = 0;
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i = 0;
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while (!badopt && argv[++i] != NULL) {
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if (strcmp(argv[i], "-out") == 0) {
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if ((argv[i + 1] != NULL) && (outfile == NULL))
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outfile = argv[++i];
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else
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badopt = 1;
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}
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#ifndef OPENSSL_NO_ENGINE
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else if (strcmp(argv[i], "-engine") == 0) {
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if ((argv[i + 1] != NULL) && (engine == NULL))
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engine = argv[++i];
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else
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badopt = 1;
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}
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#endif
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else if (strcmp(argv[i], "-rand") == 0) {
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if ((argv[i + 1] != NULL) && (inrand == NULL))
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inrand = argv[++i];
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else
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badopt = 1;
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} else if (strcmp(argv[i], "-base64") == 0) {
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if (!base64)
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base64 = 1;
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else
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badopt = 1;
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} else if (strcmp(argv[i], "-hex") == 0) {
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if (!hex)
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hex = 1;
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else
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badopt = 1;
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} else if (isdigit((unsigned char)argv[i][0])) {
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if (num < 0) {
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r = sscanf(argv[i], "%d", &num);
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if (r == 0 || num < 0)
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badopt = 1;
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} else
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badopt = 1;
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} else
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badopt = 1;
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}
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if (hex && base64)
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badopt = 1;
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if (num < 0)
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badopt = 1;
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if (badopt) {
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BIO_printf(bio_err, "Usage: rand [options] num\n");
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BIO_printf(bio_err, "where options are\n");
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BIO_printf(bio_err, "-out file - write to file\n");
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#ifndef OPENSSL_NO_ENGINE
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BIO_printf(bio_err,
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"-engine e - use engine e, possibly a hardware device.\n");
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#endif
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BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n",
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LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
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BIO_printf(bio_err, "-base64 - base64 encode output\n");
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BIO_printf(bio_err, "-hex - hex encode output\n");
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goto err;
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}
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#ifndef OPENSSL_NO_ENGINE
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setup_engine(bio_err, engine, 0);
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#endif
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app_RAND_load_file(NULL, bio_err, (inrand != NULL));
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if (inrand != NULL)
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BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
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app_RAND_load_files(inrand));
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out = BIO_new(BIO_s_file());
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if (out == NULL)
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goto err;
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if (outfile != NULL)
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r = BIO_write_filename(out, outfile);
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else {
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r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
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#ifdef OPENSSL_SYS_VMS
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{
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BIO *tmpbio = BIO_new(BIO_f_linebuffer());
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out = BIO_push(tmpbio, out);
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}
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#endif
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}
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if (r <= 0)
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goto err;
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if (base64) {
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BIO *b64 = BIO_new(BIO_f_base64());
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if (b64 == NULL)
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goto err;
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out = BIO_push(b64, out);
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}
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while (num > 0) {
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unsigned char buf[4096];
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int chunk;
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chunk = num;
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if (chunk > (int)sizeof(buf))
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chunk = sizeof buf;
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r = RAND_bytes(buf, chunk);
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if (r <= 0)
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goto err;
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if (!hex)
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BIO_write(out, buf, chunk);
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else {
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for (i = 0; i < chunk; i++)
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BIO_printf(out, "%02x", buf[i]);
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}
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num -= chunk;
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}
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if (hex)
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BIO_puts(out, "\n");
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(void)BIO_flush(out);
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app_RAND_write_file(NULL, bio_err);
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ret = 0;
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err:
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ERR_print_errors(bio_err);
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if (out)
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BIO_free_all(out);
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apps_shutdown();
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OPENSSL_EXIT(ret);
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}
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