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IABSD.fr/src/usr.bin/openssl/gendsa.c
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/* $OpenBSD: gendsa.c,v 1.18 2025/06/07 08:33:58 tb Exp $ */ /* 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 <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */ #include <sys/types.h> #include <sys/stat.h> #include <stdio.h> #include <string.h> #include "apps.h" #include <openssl/bio.h> #include <openssl/bn.h> #include <openssl/dsa.h> #include <openssl/err.h> #include <openssl/pem.h> #include <openssl/x509.h> static struct { const EVP_CIPHER *enc; char *outfile; char *passargout; } cfg; static const EVP_CIPHER * get_cipher_by_name(char *name) { if (name == NULL || strcmp(name, "") == 0) return (NULL); #ifndef OPENSSL_NO_AES else if (strcmp(name, "aes128") == 0) return EVP_aes_128_cbc(); else if (strcmp(name, "aes192") == 0) return EVP_aes_192_cbc(); else if (strcmp(name, "aes256") == 0) return EVP_aes_256_cbc(); #endif #ifndef OPENSSL_NO_CAMELLIA else if (strcmp(name, "camellia128") == 0) return EVP_camellia_128_cbc(); else if (strcmp(name, "camellia192") == 0) return EVP_camellia_192_cbc(); else if (strcmp(name, "camellia256") == 0) return EVP_camellia_256_cbc(); #endif #ifndef OPENSSL_NO_DES else if (strcmp(name, "des") == 0) return EVP_des_cbc(); else if (strcmp(name, "des3") == 0) return EVP_des_ede3_cbc(); #endif #ifndef OPENSSL_NO_IDEA else if (strcmp(name, "idea") == 0) return EVP_idea_cbc(); #endif else return (NULL); } static int set_enc(int argc, char **argv, int *argsused) { char *name = argv[0]; if (*name++ != '-') return (1); if ((cfg.enc = get_cipher_by_name(name)) == NULL) return (1); *argsused = 1; return (0); } static const struct option gendsa_options[] = { #ifndef OPENSSL_NO_AES { .name = "aes128", .desc = "Encrypt PEM output with CBC AES", .type = OPTION_ARGV_FUNC, .opt.argvfunc = set_enc, }, { .name = "aes192", .desc = "Encrypt PEM output with CBC AES", .type = OPTION_ARGV_FUNC, .opt.argvfunc = set_enc, }, { .name = "aes256", .desc = "Encrypt PEM output with CBC AES", .type = OPTION_ARGV_FUNC, .opt.argvfunc = set_enc, }, #endif #ifndef OPENSSL_NO_CAMELLIA { .name = "camellia128", .desc = "Encrypt PEM output with CBC Camellia", .type = OPTION_ARGV_FUNC, .opt.argvfunc = set_enc, }, { .name = "camellia192", .desc = "Encrypt PEM output with CBC Camellia", .type = OPTION_ARGV_FUNC, .opt.argvfunc = set_enc, }, { .name = "camellia256", .desc = "Encrypt PEM output with CBC Camellia", .type = OPTION_ARGV_FUNC, .opt.argvfunc = set_enc, }, #endif #ifndef OPENSSL_NO_DES { .name = "des", .desc = "Encrypt the generated key with DES in CBC mode", .type = OPTION_ARGV_FUNC, .opt.argvfunc = set_enc, }, { .name = "des3", .desc = "Encrypt the generated key with DES in EDE CBC mode (168 bit key)", .type = OPTION_ARGV_FUNC, .opt.argvfunc = set_enc, }, #endif #ifndef OPENSSL_NO_IDEA { .name = "idea", .desc = "Encrypt the generated key with IDEA in CBC mode", .type = OPTION_ARGV_FUNC, .opt.argvfunc = set_enc, }, #endif { .name = "out", .argname = "file", .desc = "Output the key to 'file'", .type = OPTION_ARG, .opt.arg = &cfg.outfile, }, { .name = "passout", .argname = "src", .desc = "Output file passphrase source", .type = OPTION_ARG, .opt.arg = &cfg.passargout, }, { NULL }, }; static void gendsa_usage(void) { fprintf(stderr, "usage: gendsa [-aes128 | -aes192 | -aes256 |\n"); fprintf(stderr, " -camellia128 | -camellia192 | -camellia256 |\n"); fprintf(stderr, " -des | -des3 | -idea] [-out file] [-passout src]"); fprintf(stderr, " paramfile\n\n"); options_usage(gendsa_options); fprintf(stderr, "\n"); } int gendsa_main(int argc, char **argv) { DSA *dsa = NULL; int ret = 1; char *dsaparams = NULL; char *passout = NULL; BIO *out = NULL, *in = NULL; if (pledge("stdio cpath wpath rpath tty", NULL) == -1) { perror("pledge"); exit(1); } memset(&cfg, 0, sizeof(cfg)); if (options_parse(argc, argv, gendsa_options, &dsaparams, NULL) != 0) { gendsa_usage(); goto end; } if (dsaparams == NULL) { gendsa_usage(); goto end; } if (!app_passwd(bio_err, NULL, cfg.passargout, NULL, &passout)) { BIO_printf(bio_err, "Error getting password\n"); goto end; } in = BIO_new(BIO_s_file()); if (!(BIO_read_filename(in, dsaparams))) { perror(dsaparams); goto end; } 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_new(BIO_s_file()); if (out == NULL) goto end; if (cfg.outfile == NULL) { BIO_set_fp(out, stdout, BIO_NOCLOSE); } else { if (BIO_write_filename(out, cfg.outfile) <= 0) { perror(cfg.outfile); goto end; } } BIO_printf(bio_err, "Generating DSA key, %d bits\n", BN_num_bits(DSA_get0_p(dsa))); if (!DSA_generate_key(dsa)) goto end; if (!PEM_write_bio_DSAPrivateKey(out, dsa, cfg.enc, NULL, 0, NULL, passout)) goto end; ret = 0; end: if (ret != 0) ERR_print_errors(bio_err); BIO_free(in); BIO_free_all(out); DSA_free(dsa); free(passout); return (ret); }