1 /* apps/dsa.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 OPENSSL_NO_DSA 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <time.h> 64 #include "apps.h" 65 #include <openssl/bio.h> 66 #include <openssl/err.h> 67 #include <openssl/dsa.h> 68 #include <openssl/evp.h> 69 #include <openssl/x509.h> 70 #include <openssl/pem.h> 71 72 #undef PROG 73 #define PROG dsa_main 74 75 /* -inform arg - input format - default PEM (one of DER, NET or PEM) 76 * -outform arg - output format - default PEM 77 * -in arg - input file - default stdin 78 * -out arg - output file - default stdout 79 * -des - encrypt output if PEM format with DES in cbc mode 80 * -des3 - encrypt output if PEM format 81 * -idea - encrypt output if PEM format 82 * -aes128 - encrypt output if PEM format 83 * -aes192 - encrypt output if PEM format 84 * -aes256 - encrypt output if PEM format 85 * -text - print a text version 86 * -modulus - print the DSA public key 87 */ 88 89 int MAIN(int, char **); 90 91 int MAIN(int argc, char **argv) 92 { 93 ENGINE *e = NULL; 94 int ret=1; 95 DSA *dsa=NULL; 96 int i,badops=0; 97 const EVP_CIPHER *enc=NULL; 98 BIO *in=NULL,*out=NULL; 99 int informat,outformat,text=0,noout=0; 100 int pubin = 0, pubout = 0; 101 char *infile,*outfile,*prog,*engine; 102 char *passargin = NULL, *passargout = NULL; 103 char *passin = NULL, *passout = NULL; 104 int modulus=0; 105 106 apps_startup(); 107 108 if (bio_err == NULL) 109 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 110 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 111 112 if (!load_config(bio_err, NULL)) 113 goto end; 114 115 engine=NULL; 116 infile=NULL; 117 outfile=NULL; 118 informat=FORMAT_PEM; 119 outformat=FORMAT_PEM; 120 121 prog=argv[0]; 122 argc--; 123 argv++; 124 while (argc >= 1) 125 { 126 if (strcmp(*argv,"-inform") == 0) 127 { 128 if (--argc < 1) goto bad; 129 informat=str2fmt(*(++argv)); 130 } 131 else if (strcmp(*argv,"-outform") == 0) 132 { 133 if (--argc < 1) goto bad; 134 outformat=str2fmt(*(++argv)); 135 } 136 else if (strcmp(*argv,"-in") == 0) 137 { 138 if (--argc < 1) goto bad; 139 infile= *(++argv); 140 } 141 else if (strcmp(*argv,"-out") == 0) 142 { 143 if (--argc < 1) goto bad; 144 outfile= *(++argv); 145 } 146 else if (strcmp(*argv,"-passin") == 0) 147 { 148 if (--argc < 1) goto bad; 149 passargin= *(++argv); 150 } 151 else if (strcmp(*argv,"-passout") == 0) 152 { 153 if (--argc < 1) goto bad; 154 passargout= *(++argv); 155 } 156 else if (strcmp(*argv,"-engine") == 0) 157 { 158 if (--argc < 1) goto bad; 159 engine= *(++argv); 160 } 161 else if (strcmp(*argv,"-noout") == 0) 162 noout=1; 163 else if (strcmp(*argv,"-text") == 0) 164 text=1; 165 else if (strcmp(*argv,"-modulus") == 0) 166 modulus=1; 167 else if (strcmp(*argv,"-pubin") == 0) 168 pubin=1; 169 else if (strcmp(*argv,"-pubout") == 0) 170 pubout=1; 171 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL) 172 { 173 BIO_printf(bio_err,"unknown option %s\n",*argv); 174 badops=1; 175 break; 176 } 177 argc--; 178 argv++; 179 } 180 181 if (badops) 182 { 183 bad: 184 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 185 BIO_printf(bio_err,"where options are\n"); 186 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 187 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 188 BIO_printf(bio_err," -in arg input file\n"); 189 BIO_printf(bio_err," -passin arg input file pass phrase source\n"); 190 BIO_printf(bio_err," -out arg output file\n"); 191 BIO_printf(bio_err," -passout arg output file pass phrase source\n"); 192 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); 193 BIO_printf(bio_err," -des encrypt PEM output with cbc des\n"); 194 BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 195 #ifndef OPENSSL_NO_IDEA 196 BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n"); 197 #endif 198 #ifndef OPENSSL_NO_AES 199 BIO_printf(bio_err," -aes128, -aes192, -aes256\n"); 200 BIO_printf(bio_err," encrypt PEM output with cbc aes\n"); 201 #endif 202 BIO_printf(bio_err," -text print the key in text\n"); 203 BIO_printf(bio_err," -noout don't print key out\n"); 204 BIO_printf(bio_err," -modulus print the DSA public value\n"); 205 goto end; 206 } 207 208 ERR_load_crypto_strings(); 209 210 e = setup_engine(bio_err, engine, 0); 211 212 if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 213 BIO_printf(bio_err, "Error getting passwords\n"); 214 goto end; 215 } 216 217 in=BIO_new(BIO_s_file()); 218 out=BIO_new(BIO_s_file()); 219 if ((in == NULL) || (out == NULL)) 220 { 221 ERR_print_errors(bio_err); 222 goto end; 223 } 224 225 if (infile == NULL) 226 BIO_set_fp(in,stdin,BIO_NOCLOSE); 227 else 228 { 229 if (BIO_read_filename(in,infile) <= 0) 230 { 231 perror(infile); 232 goto end; 233 } 234 } 235 236 BIO_printf(bio_err,"read DSA key\n"); 237 if (informat == FORMAT_ASN1) { 238 if(pubin) dsa=d2i_DSA_PUBKEY_bio(in,NULL); 239 else dsa=d2i_DSAPrivateKey_bio(in,NULL); 240 } else if (informat == FORMAT_PEM) { 241 if(pubin) dsa=PEM_read_bio_DSA_PUBKEY(in,NULL, NULL, NULL); 242 else dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL,passin); 243 } else 244 { 245 BIO_printf(bio_err,"bad input format specified for key\n"); 246 goto end; 247 } 248 if (dsa == NULL) 249 { 250 BIO_printf(bio_err,"unable to load Key\n"); 251 ERR_print_errors(bio_err); 252 goto end; 253 } 254 255 if (outfile == NULL) 256 { 257 BIO_set_fp(out,stdout,BIO_NOCLOSE); 258 #ifdef OPENSSL_SYS_VMS 259 { 260 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 261 out = BIO_push(tmpbio, out); 262 } 263 #endif 264 } 265 else 266 { 267 if (BIO_write_filename(out,outfile) <= 0) 268 { 269 perror(outfile); 270 goto end; 271 } 272 } 273 274 if (text) 275 if (!DSA_print(out,dsa,0)) 276 { 277 perror(outfile); 278 ERR_print_errors(bio_err); 279 goto end; 280 } 281 282 if (modulus) 283 { 284 fprintf(stdout,"Public Key="); 285 BN_print(out,dsa->pub_key); 286 fprintf(stdout,"\n"); 287 } 288 289 if (noout) goto end; 290 BIO_printf(bio_err,"writing DSA key\n"); 291 if (outformat == FORMAT_ASN1) { 292 if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa); 293 else i=i2d_DSAPrivateKey_bio(out,dsa); 294 } else if (outformat == FORMAT_PEM) { 295 if(pubin || pubout) 296 i=PEM_write_bio_DSA_PUBKEY(out,dsa); 297 else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc, 298 NULL,0,NULL, passout); 299 } else { 300 BIO_printf(bio_err,"bad output format specified for outfile\n"); 301 goto end; 302 } 303 if (!i) 304 { 305 BIO_printf(bio_err,"unable to write private key\n"); 306 ERR_print_errors(bio_err); 307 } 308 else 309 ret=0; 310 end: 311 if(in != NULL) BIO_free(in); 312 if(out != NULL) BIO_free_all(out); 313 if(dsa != NULL) DSA_free(dsa); 314 if(passin) OPENSSL_free(passin); 315 if(passout) OPENSSL_free(passout); 316 apps_shutdown(); 317 OPENSSL_EXIT(ret); 318 } 319 #endif 320