/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * 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 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 acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include /* for OPENSSL_NO_DSA */ #ifndef OPENSSL_NO_DSA # include # include # include # include # include "apps.h" # include # include # include # include # include # include # define DEFBITS 512 typedef enum OPTION_choice { OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_OUT, OPT_PASSOUT, OPT_ENGINE, OPT_RAND, OPT_CIPHER } OPTION_CHOICE; OPTIONS gendsa_options[] = { {OPT_HELP_STR, 1, '-', "Usage: %s [args] dsaparam-file\n"}, {OPT_HELP_STR, 1, '-', "Valid options are:\n"}, {"help", OPT_HELP, '-', "Display this summary"}, {"out", OPT_OUT, '>', "Output the key to the specified file"}, {"passout", OPT_PASSOUT, 's'}, {"rand", OPT_RAND, 's', "Load the file(s) into the random number generator"}, {"", OPT_CIPHER, '-', "Encrypt the output with any supported cipher"}, # ifndef OPENSSL_NO_ENGINE {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, # endif {NULL} }; int gendsa_main(int argc, char **argv) { BIO *out = NULL, *in = NULL; DSA *dsa = NULL; const EVP_CIPHER *enc = NULL; char *inrand = NULL, *dsaparams = NULL; char *outfile = NULL, *passoutarg = NULL, *passout = NULL, *prog; OPTION_CHOICE o; int ret = 1, private = 0; prog = opt_init(argc, argv, gendsa_options); while ((o = opt_next()) != OPT_EOF) { switch (o) { case OPT_EOF: case OPT_ERR: opthelp: BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); goto end; case OPT_HELP: ret = 0; opt_help(gendsa_options); goto end; case OPT_OUT: outfile = opt_arg(); break; case OPT_PASSOUT: passoutarg = opt_arg(); break; case OPT_ENGINE: (void)setup_engine(opt_arg(), 0); break; case OPT_RAND: inrand = opt_arg(); break; case OPT_CIPHER: if (!opt_cipher(opt_unknown(), &enc)) goto end; break; } } argc = opt_num_rest(); argv = opt_rest(); private = 1; if (argc != 1) goto opthelp; dsaparams = *argv; if (!app_passwd(NULL, passoutarg, NULL, &passout)) { BIO_printf(bio_err, "Error getting password\n"); goto end; } if (!app_load_modules(NULL)) goto end; in = bio_open_default(dsaparams, 'r', FORMAT_PEM); if (in == NULL) goto end2; if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) { BIO_printf(bio_err, "unable to load DSA parameter file\n"); goto end; } BIO_free(in); in = NULL; out = bio_open_owner(outfile, FORMAT_PEM, private); if (out == NULL) goto end2; if (!app_RAND_load_file(NULL, 1) && inrand == NULL) { BIO_printf(bio_err, "warning, not much extra random data, consider using the -rand option\n"); } if (inrand != NULL) BIO_printf(bio_err, "%ld semi-random bytes loaded\n", app_RAND_load_files(inrand)); BIO_printf(bio_err, "Generating DSA key, %d bits\n", BN_num_bits(dsa->p)); if (!DSA_generate_key(dsa)) goto end; app_RAND_write_file(NULL); assert(private); if (!PEM_write_bio_DSAPrivateKey(out, dsa, enc, NULL, 0, NULL, passout)) goto end; ret = 0; end: if (ret != 0) ERR_print_errors(bio_err); end2: BIO_free(in); BIO_free_all(out); DSA_free(dsa); OPENSSL_free(passout); return (ret); } #else /* !OPENSSL_NO_DSA */ # if PEDANTIC static void *dummy = &dummy; # endif #endif