/* apps/rand.c */ /* ==================================================================== * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. 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. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * openssl-core@openssl.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.openssl.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED 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 OpenSSL PROJECT OR * ITS 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. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ #include "apps.h" #include #include #include #include #include #include #undef PROG #define PROG rand_main /* -out file - write to file * -rand file:file - PRNG seed files * -base64 - base64 encode output * -hex - hex encode output * num - write 'num' bytes */ int MAIN(int, char **); int MAIN(int argc, char **argv) { #ifndef OPENSSL_NO_ENGINE ENGINE *e = NULL; #endif int i, r, ret = 1; int badopt; char *outfile = NULL; char *inrand = NULL; int base64 = 0; int hex = 0; BIO *out = NULL; int num = -1; #ifndef OPENSSL_NO_ENGINE char *engine=NULL; #endif apps_startup(); if (bio_err == NULL) if ((bio_err = BIO_new(BIO_s_file())) != NULL) BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT); if (!load_config(bio_err, NULL)) goto err; badopt = 0; i = 0; while (!badopt && argv[++i] != NULL) { if (strcmp(argv[i], "-out") == 0) { if ((argv[i+1] != NULL) && (outfile == NULL)) outfile = argv[++i]; else badopt = 1; } #ifndef OPENSSL_NO_ENGINE else if (strcmp(argv[i], "-engine") == 0) { if ((argv[i+1] != NULL) && (engine == NULL)) engine = argv[++i]; else badopt = 1; } #endif else if (strcmp(argv[i], "-rand") == 0) { if ((argv[i+1] != NULL) && (inrand == NULL)) inrand = argv[++i]; else badopt = 1; } else if (strcmp(argv[i], "-base64") == 0) { if (!base64) base64 = 1; else badopt = 1; } else if (strcmp(argv[i], "-hex") == 0) { if (!hex) hex = 1; else badopt = 1; } else if (isdigit((unsigned char)argv[i][0])) { if (num < 0) { r = sscanf(argv[i], "%d", &num); if (r == 0 || num < 0) badopt = 1; } else badopt = 1; } else badopt = 1; } if (hex && base64) badopt = 1; if (num < 0) badopt = 1; if (badopt) { BIO_printf(bio_err, "Usage: rand [options] num\n"); BIO_printf(bio_err, "where options are\n"); BIO_printf(bio_err, "-out file - write to file\n"); #ifndef OPENSSL_NO_ENGINE BIO_printf(bio_err, "-engine e - use engine e, possibly a hardware device.\n"); #endif BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); BIO_printf(bio_err, "-base64 - base64 encode output\n"); BIO_printf(bio_err, "-hex - hex encode output\n"); goto err; } #ifndef OPENSSL_NO_ENGINE e = setup_engine(bio_err, engine, 0); #endif app_RAND_load_file(NULL, bio_err, (inrand != NULL)); if (inrand != NULL) BIO_printf(bio_err,"%ld semi-random bytes loaded\n", app_RAND_load_files(inrand)); out = BIO_new(BIO_s_file()); if (out == NULL) goto err; if (outfile != NULL) r = BIO_write_filename(out, outfile); else { r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT); #ifdef OPENSSL_SYS_VMS { BIO *tmpbio = BIO_new(BIO_f_linebuffer()); out = BIO_push(tmpbio, out); } #endif } if (r <= 0) goto err; if (base64) { BIO *b64 = BIO_new(BIO_f_base64()); if (b64 == NULL) goto err; out = BIO_push(b64, out); } while (num > 0) { unsigned char buf[4096]; int chunk; chunk = num; if (chunk > (int)sizeof(buf)) chunk = sizeof buf; r = RAND_bytes(buf, chunk); if (r <= 0) goto err; if (!hex) BIO_write(out, buf, chunk); else { for (i = 0; i < chunk; i++) BIO_printf(out, "%02x", buf[i]); } num -= chunk; } if (hex) BIO_puts(out, "\n"); (void)BIO_flush(out); app_RAND_write_file(NULL, bio_err); ret = 0; err: ERR_print_errors(bio_err); if (out) BIO_free_all(out); apps_shutdown(); OPENSSL_EXIT(ret); }