1 /* apps/gendsa.c */ 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 #ifndef NO_DSA 60 #include <stdio.h> 61 #include <string.h> 62 #include <sys/types.h> 63 #include <sys/stat.h> 64 #include "apps.h" 65 #include <openssl/bio.h> 66 #include <openssl/err.h> 67 #include <openssl/bn.h> 68 #include <openssl/dsa.h> 69 #include <openssl/x509.h> 70 #include <openssl/pem.h> 71 72 #define DEFBITS 512 73 #undef PROG 74 #define PROG gendsa_main 75 76 int MAIN(int, char **); 77 78 int MAIN(int argc, char **argv) 79 { 80 DSA *dsa=NULL; 81 int ret=1; 82 char *outfile=NULL; 83 char *inrand=NULL,*dsaparams=NULL; 84 char *passargout = NULL, *passout = NULL; 85 BIO *out=NULL,*in=NULL; 86 EVP_CIPHER *enc=NULL; 87 88 apps_startup(); 89 90 if (bio_err == NULL) 91 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 92 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 93 94 argv++; 95 argc--; 96 for (;;) 97 { 98 if (argc <= 0) break; 99 if (strcmp(*argv,"-out") == 0) 100 { 101 if (--argc < 1) goto bad; 102 outfile= *(++argv); 103 } 104 else if (strcmp(*argv,"-passout") == 0) 105 { 106 if (--argc < 1) goto bad; 107 passargout= *(++argv); 108 } 109 else if (strcmp(*argv,"-rand") == 0) 110 { 111 if (--argc < 1) goto bad; 112 inrand= *(++argv); 113 } 114 else if (strcmp(*argv,"-") == 0) 115 goto bad; 116 #ifndef NO_DES 117 else if (strcmp(*argv,"-des") == 0) 118 enc=EVP_des_cbc(); 119 else if (strcmp(*argv,"-des3") == 0) 120 enc=EVP_des_ede3_cbc(); 121 #endif 122 #ifndef NO_IDEA 123 else if (strcmp(*argv,"-idea") == 0) 124 enc=EVP_idea_cbc(); 125 #endif 126 else if (**argv != '-' && dsaparams == NULL) 127 { 128 dsaparams = *argv; 129 } 130 else 131 goto bad; 132 argv++; 133 argc--; 134 } 135 136 if (dsaparams == NULL) 137 { 138 bad: 139 BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n"); 140 BIO_printf(bio_err," -out file - output the key to 'file'\n"); 141 #ifndef NO_DES 142 BIO_printf(bio_err," -des - encrypt the generated key with DES in cbc mode\n"); 143 BIO_printf(bio_err," -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 144 #endif 145 #ifndef NO_IDEA 146 BIO_printf(bio_err," -idea - encrypt the generated key with IDEA in cbc mode\n"); 147 #endif 148 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 149 BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); 150 BIO_printf(bio_err," the random number generator\n"); 151 BIO_printf(bio_err," dsaparam-file\n"); 152 BIO_printf(bio_err," - a DSA parameter file as generated by the dsaparam command\n"); 153 goto end; 154 } 155 156 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { 157 BIO_printf(bio_err, "Error getting password\n"); 158 goto end; 159 } 160 161 162 in=BIO_new(BIO_s_file()); 163 if (!(BIO_read_filename(in,dsaparams))) 164 { 165 perror(dsaparams); 166 goto end; 167 } 168 169 if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL) 170 { 171 BIO_printf(bio_err,"unable to load DSA parameter file\n"); 172 goto end; 173 } 174 BIO_free(in); 175 in = NULL; 176 177 out=BIO_new(BIO_s_file()); 178 if (out == NULL) goto end; 179 180 if (outfile == NULL) 181 BIO_set_fp(out,stdout,BIO_NOCLOSE); 182 else 183 { 184 if (BIO_write_filename(out,outfile) <= 0) 185 { 186 perror(outfile); 187 goto end; 188 } 189 } 190 191 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) 192 { 193 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 194 } 195 if (inrand != NULL) 196 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 197 app_RAND_load_files(inrand)); 198 199 BIO_printf(bio_err,"Generating DSA key, %d bits\n", 200 BN_num_bits(dsa->p)); 201 if (!DSA_generate_key(dsa)) goto end; 202 203 app_RAND_write_file(NULL, bio_err); 204 205 if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL, passout)) 206 goto end; 207 ret=0; 208 end: 209 if (ret != 0) 210 ERR_print_errors(bio_err); 211 if (in != NULL) BIO_free(in); 212 if (out != NULL) BIO_free(out); 213 if (dsa != NULL) DSA_free(dsa); 214 if(passout) Free(passout); 215 EXIT(ret); 216 } 217 #endif 218