1 /* apps/dsaparam.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 <assert.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <time.h> 64 #include <string.h> 65 #include "apps.h" 66 #include <openssl/bio.h> 67 #include <openssl/err.h> 68 #include <openssl/bn.h> 69 #include <openssl/dsa.h> 70 #include <openssl/x509.h> 71 #include <openssl/pem.h> 72 73 #undef PROG 74 #define PROG dsaparam_main 75 76 /* -inform arg - input format - default PEM (DER or PEM) 77 * -outform arg - output format - default PEM 78 * -in arg - input file - default stdin 79 * -out arg - output file - default stdout 80 * -noout 81 * -text 82 * -C 83 * -noout 84 * -genkey 85 */ 86 87 static void MS_CALLBACK dsa_cb(int p, int n, void *arg); 88 89 int MAIN(int, char **); 90 91 int MAIN(int argc, char **argv) 92 { 93 DSA *dsa=NULL; 94 int i,badops=0,text=0; 95 BIO *in=NULL,*out=NULL; 96 int informat,outformat,noout=0,C=0,ret=1; 97 char *infile,*outfile,*prog,*inrand=NULL; 98 int numbits= -1,num,genkey=0; 99 int need_rand=0; 100 101 apps_startup(); 102 103 if (bio_err == NULL) 104 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 105 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 106 107 infile=NULL; 108 outfile=NULL; 109 informat=FORMAT_PEM; 110 outformat=FORMAT_PEM; 111 112 prog=argv[0]; 113 argc--; 114 argv++; 115 while (argc >= 1) 116 { 117 if (strcmp(*argv,"-inform") == 0) 118 { 119 if (--argc < 1) goto bad; 120 informat=str2fmt(*(++argv)); 121 } 122 else if (strcmp(*argv,"-outform") == 0) 123 { 124 if (--argc < 1) goto bad; 125 outformat=str2fmt(*(++argv)); 126 } 127 else if (strcmp(*argv,"-in") == 0) 128 { 129 if (--argc < 1) goto bad; 130 infile= *(++argv); 131 } 132 else if (strcmp(*argv,"-out") == 0) 133 { 134 if (--argc < 1) goto bad; 135 outfile= *(++argv); 136 } 137 else if (strcmp(*argv,"-text") == 0) 138 text=1; 139 else if (strcmp(*argv,"-C") == 0) 140 C=1; 141 else if (strcmp(*argv,"-genkey") == 0) 142 { 143 genkey=1; 144 need_rand=1; 145 } 146 else if (strcmp(*argv,"-rand") == 0) 147 { 148 if (--argc < 1) goto bad; 149 inrand= *(++argv); 150 need_rand=1; 151 } 152 else if (strcmp(*argv,"-noout") == 0) 153 noout=1; 154 else if (sscanf(*argv,"%d",&num) == 1) 155 { 156 /* generate a key */ 157 numbits=num; 158 need_rand=1; 159 } 160 else 161 { 162 BIO_printf(bio_err,"unknown option %s\n",*argv); 163 badops=1; 164 break; 165 } 166 argc--; 167 argv++; 168 } 169 170 if (badops) 171 { 172 bad: 173 BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog); 174 BIO_printf(bio_err,"where options are\n"); 175 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 176 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 177 BIO_printf(bio_err," -in arg input file\n"); 178 BIO_printf(bio_err," -out arg output file\n"); 179 BIO_printf(bio_err," -text print the key in text\n"); 180 BIO_printf(bio_err," -C Output C code\n"); 181 BIO_printf(bio_err," -noout no output\n"); 182 BIO_printf(bio_err," -rand files to use for random number input\n"); 183 BIO_printf(bio_err," number number of bits to use for generating private key\n"); 184 goto end; 185 } 186 187 ERR_load_crypto_strings(); 188 189 in=BIO_new(BIO_s_file()); 190 out=BIO_new(BIO_s_file()); 191 if ((in == NULL) || (out == NULL)) 192 { 193 ERR_print_errors(bio_err); 194 goto end; 195 } 196 197 if (infile == NULL) 198 BIO_set_fp(in,stdin,BIO_NOCLOSE); 199 else 200 { 201 if (BIO_read_filename(in,infile) <= 0) 202 { 203 perror(infile); 204 goto end; 205 } 206 } 207 if (outfile == NULL) 208 BIO_set_fp(out,stdout,BIO_NOCLOSE); 209 else 210 { 211 if (BIO_write_filename(out,outfile) <= 0) 212 { 213 perror(outfile); 214 goto end; 215 } 216 } 217 218 if (need_rand) 219 { 220 app_RAND_load_file(NULL, bio_err, (inrand != NULL)); 221 if (inrand != NULL) 222 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 223 app_RAND_load_files(inrand)); 224 } 225 226 if (numbits > 0) 227 { 228 assert(need_rand); 229 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num); 230 BIO_printf(bio_err,"This could take some time\n"); 231 dsa=DSA_generate_parameters(num,NULL,0,NULL,NULL, dsa_cb,bio_err); 232 } 233 else if (informat == FORMAT_ASN1) 234 dsa=d2i_DSAparams_bio(in,NULL); 235 else if (informat == FORMAT_PEM) 236 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL); 237 else 238 { 239 BIO_printf(bio_err,"bad input format specified\n"); 240 goto end; 241 } 242 if (dsa == NULL) 243 { 244 BIO_printf(bio_err,"unable to load DSA parameters\n"); 245 ERR_print_errors(bio_err); 246 goto end; 247 } 248 249 if (text) 250 { 251 DSAparams_print(out,dsa); 252 } 253 254 if (C) 255 { 256 unsigned char *data; 257 int l,len,bits_p,bits_q,bits_g; 258 259 len=BN_num_bytes(dsa->p); 260 bits_p=BN_num_bits(dsa->p); 261 bits_q=BN_num_bits(dsa->q); 262 bits_g=BN_num_bits(dsa->g); 263 data=(unsigned char *)Malloc(len+20); 264 if (data == NULL) 265 { 266 perror("Malloc"); 267 goto end; 268 } 269 l=BN_bn2bin(dsa->p,data); 270 printf("static unsigned char dsa%d_p[]={",bits_p); 271 for (i=0; i<l; i++) 272 { 273 if ((i%12) == 0) printf("\n\t"); 274 printf("0x%02X,",data[i]); 275 } 276 printf("\n\t};\n"); 277 278 l=BN_bn2bin(dsa->q,data); 279 printf("static unsigned char dsa%d_q[]={",bits_p); 280 for (i=0; i<l; i++) 281 { 282 if ((i%12) == 0) printf("\n\t"); 283 printf("0x%02X,",data[i]); 284 } 285 printf("\n\t};\n"); 286 287 l=BN_bn2bin(dsa->g,data); 288 printf("static unsigned char dsa%d_g[]={",bits_p); 289 for (i=0; i<l; i++) 290 { 291 if ((i%12) == 0) printf("\n\t"); 292 printf("0x%02X,",data[i]); 293 } 294 printf("\n\t};\n\n"); 295 296 printf("DSA *get_dsa%d()\n\t{\n",bits_p); 297 printf("\tDSA *dsa;\n\n"); 298 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n"); 299 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n", 300 bits_p,bits_p); 301 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n", 302 bits_p,bits_p); 303 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n", 304 bits_p,bits_p); 305 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n"); 306 printf("\t\treturn(NULL);\n"); 307 printf("\treturn(dsa);\n\t}\n"); 308 } 309 310 311 if (!noout) 312 { 313 if (outformat == FORMAT_ASN1) 314 i=i2d_DSAparams_bio(out,dsa); 315 else if (outformat == FORMAT_PEM) 316 i=PEM_write_bio_DSAparams(out,dsa); 317 else { 318 BIO_printf(bio_err,"bad output format specified for outfile\n"); 319 goto end; 320 } 321 if (!i) 322 { 323 BIO_printf(bio_err,"unable to write DSA parameters\n"); 324 ERR_print_errors(bio_err); 325 goto end; 326 } 327 } 328 if (genkey) 329 { 330 DSA *dsakey; 331 332 assert(need_rand); 333 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end; 334 if (!DSA_generate_key(dsakey)) goto end; 335 if (outformat == FORMAT_ASN1) 336 i=i2d_DSAPrivateKey_bio(out,dsakey); 337 else if (outformat == FORMAT_PEM) 338 i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL); 339 else { 340 BIO_printf(bio_err,"bad output format specified for outfile\n"); 341 goto end; 342 } 343 DSA_free(dsakey); 344 } 345 if (need_rand) 346 app_RAND_write_file(NULL, bio_err); 347 ret=0; 348 end: 349 if (in != NULL) BIO_free(in); 350 if (out != NULL) BIO_free(out); 351 if (dsa != NULL) DSA_free(dsa); 352 EXIT(ret); 353 } 354 355 static void MS_CALLBACK dsa_cb(int p, int n, void *arg) 356 { 357 char c='*'; 358 359 if (p == 0) c='.'; 360 if (p == 1) c='+'; 361 if (p == 2) c='*'; 362 if (p == 3) c='\n'; 363 BIO_write(arg,&c,1); 364 (void)BIO_flush(arg); 365 #ifdef LINT 366 p=n; 367 #endif 368 } 369 #endif 370