1 /* $OpenBSD: gendsa.c,v 1.6 2015/10/17 07:51:10 semarie Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */ 60 61 62 #include <sys/types.h> 63 #include <sys/stat.h> 64 65 #include <stdio.h> 66 #include <string.h> 67 68 #include "apps.h" 69 70 #include <openssl/bio.h> 71 #include <openssl/bn.h> 72 #include <openssl/dsa.h> 73 #include <openssl/err.h> 74 #include <openssl/pem.h> 75 #include <openssl/x509.h> 76 77 int 78 gendsa_main(int argc, char **argv) 79 { 80 DSA *dsa = NULL; 81 int ret = 1; 82 char *outfile = NULL; 83 char *dsaparams = NULL; 84 char *passargout = NULL, *passout = NULL; 85 BIO *out = NULL, *in = NULL; 86 const EVP_CIPHER *enc = NULL; 87 88 if (single_execution) { 89 if (pledge("stdio rpath wpath cpath tty", NULL) == -1) { 90 perror("pledge"); 91 exit(1); 92 } 93 } 94 95 argv++; 96 argc--; 97 for (;;) { 98 if (argc <= 0) 99 break; 100 if (strcmp(*argv, "-out") == 0) { 101 if (--argc < 1) 102 goto bad; 103 outfile = *(++argv); 104 } else if (strcmp(*argv, "-passout") == 0) { 105 if (--argc < 1) 106 goto bad; 107 passargout = *(++argv); 108 } 109 else if (strcmp(*argv, "-") == 0) 110 goto bad; 111 #ifndef OPENSSL_NO_DES 112 else if (strcmp(*argv, "-des") == 0) 113 enc = EVP_des_cbc(); 114 else if (strcmp(*argv, "-des3") == 0) 115 enc = EVP_des_ede3_cbc(); 116 #endif 117 #ifndef OPENSSL_NO_IDEA 118 else if (strcmp(*argv, "-idea") == 0) 119 enc = EVP_idea_cbc(); 120 #endif 121 #ifndef OPENSSL_NO_AES 122 else if (strcmp(*argv, "-aes128") == 0) 123 enc = EVP_aes_128_cbc(); 124 else if (strcmp(*argv, "-aes192") == 0) 125 enc = EVP_aes_192_cbc(); 126 else if (strcmp(*argv, "-aes256") == 0) 127 enc = EVP_aes_256_cbc(); 128 #endif 129 #ifndef OPENSSL_NO_CAMELLIA 130 else if (strcmp(*argv, "-camellia128") == 0) 131 enc = EVP_camellia_128_cbc(); 132 else if (strcmp(*argv, "-camellia192") == 0) 133 enc = EVP_camellia_192_cbc(); 134 else if (strcmp(*argv, "-camellia256") == 0) 135 enc = EVP_camellia_256_cbc(); 136 #endif 137 else if (**argv != '-' && dsaparams == NULL) { 138 dsaparams = *argv; 139 } else 140 goto bad; 141 argv++; 142 argc--; 143 } 144 145 if (dsaparams == NULL) { 146 bad: 147 BIO_printf(bio_err, "usage: gendsa [args] dsaparam-file\n"); 148 BIO_printf(bio_err, " -out file - output the key to 'file'\n"); 149 #ifndef OPENSSL_NO_DES 150 BIO_printf(bio_err, " -des - encrypt the generated key with DES in cbc mode\n"); 151 BIO_printf(bio_err, " -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 152 #endif 153 #ifndef OPENSSL_NO_IDEA 154 BIO_printf(bio_err, " -idea - encrypt the generated key with IDEA in cbc mode\n"); 155 #endif 156 #ifndef OPENSSL_NO_AES 157 BIO_printf(bio_err, " -aes128, -aes192, -aes256\n"); 158 BIO_printf(bio_err, " encrypt PEM output with cbc aes\n"); 159 #endif 160 #ifndef OPENSSL_NO_CAMELLIA 161 BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n"); 162 BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n"); 163 #endif 164 BIO_printf(bio_err, " dsaparam-file\n"); 165 BIO_printf(bio_err, " - a DSA parameter file as generated by the dsaparam command\n"); 166 goto end; 167 } 168 if (!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { 169 BIO_printf(bio_err, "Error getting password\n"); 170 goto end; 171 } 172 in = BIO_new(BIO_s_file()); 173 if (!(BIO_read_filename(in, dsaparams))) { 174 perror(dsaparams); 175 goto end; 176 } 177 if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) { 178 BIO_printf(bio_err, "unable to load DSA parameter file\n"); 179 goto end; 180 } 181 BIO_free(in); 182 in = NULL; 183 184 out = BIO_new(BIO_s_file()); 185 if (out == NULL) 186 goto end; 187 188 if (outfile == NULL) { 189 BIO_set_fp(out, stdout, BIO_NOCLOSE); 190 } else { 191 if (BIO_write_filename(out, outfile) <= 0) { 192 perror(outfile); 193 goto end; 194 } 195 } 196 197 BIO_printf(bio_err, "Generating DSA key, %d bits\n", 198 BN_num_bits(dsa->p)); 199 if (!DSA_generate_key(dsa)) 200 goto end; 201 202 if (!PEM_write_bio_DSAPrivateKey(out, dsa, enc, NULL, 0, NULL, passout)) 203 goto end; 204 ret = 0; 205 end: 206 if (ret != 0) 207 ERR_print_errors(bio_err); 208 BIO_free(in); 209 if (out != NULL) 210 BIO_free_all(out); 211 if (dsa != NULL) 212 DSA_free(dsa); 213 free(passout); 214 215 return (ret); 216 } 217