dsa.c revision 59191
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 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 * -text - print a text version 83 * -modulus - print the DSA public key 84 */ 85 86int MAIN(int, char **); 87 88int MAIN(int argc, char **argv) 89 { 90 int ret=1; 91 DSA *dsa=NULL; 92 int i,badops=0; 93 const EVP_CIPHER *enc=NULL; 94 BIO *in=NULL,*out=NULL; 95 int informat,outformat,text=0,noout=0; 96 int pubin = 0, pubout = 0; 97 char *infile,*outfile,*prog; 98 char *passargin = NULL, *passargout = NULL; 99 char *passin = NULL, *passout = NULL; 100 int modulus=0; 101 102 apps_startup(); 103 104 if (bio_err == NULL) 105 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 106 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 107 108 infile=NULL; 109 outfile=NULL; 110 informat=FORMAT_PEM; 111 outformat=FORMAT_PEM; 112 113 prog=argv[0]; 114 argc--; 115 argv++; 116 while (argc >= 1) 117 { 118 if (strcmp(*argv,"-inform") == 0) 119 { 120 if (--argc < 1) goto bad; 121 informat=str2fmt(*(++argv)); 122 } 123 else if (strcmp(*argv,"-outform") == 0) 124 { 125 if (--argc < 1) goto bad; 126 outformat=str2fmt(*(++argv)); 127 } 128 else if (strcmp(*argv,"-in") == 0) 129 { 130 if (--argc < 1) goto bad; 131 infile= *(++argv); 132 } 133 else if (strcmp(*argv,"-out") == 0) 134 { 135 if (--argc < 1) goto bad; 136 outfile= *(++argv); 137 } 138 else if (strcmp(*argv,"-passin") == 0) 139 { 140 if (--argc < 1) goto bad; 141 passargin= *(++argv); 142 } 143 else if (strcmp(*argv,"-passout") == 0) 144 { 145 if (--argc < 1) goto bad; 146 passargout= *(++argv); 147 } 148 else if (strcmp(*argv,"-noout") == 0) 149 noout=1; 150 else if (strcmp(*argv,"-text") == 0) 151 text=1; 152 else if (strcmp(*argv,"-modulus") == 0) 153 modulus=1; 154 else if (strcmp(*argv,"-pubin") == 0) 155 pubin=1; 156 else if (strcmp(*argv,"-pubout") == 0) 157 pubout=1; 158 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL) 159 { 160 BIO_printf(bio_err,"unknown option %s\n",*argv); 161 badops=1; 162 break; 163 } 164 argc--; 165 argv++; 166 } 167 168 if (badops) 169 { 170bad: 171 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 172 BIO_printf(bio_err,"where options are\n"); 173 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 174 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 175 BIO_printf(bio_err," -in arg input file\n"); 176 BIO_printf(bio_err," -passin arg input file pass phrase source\n"); 177 BIO_printf(bio_err," -out arg output file\n"); 178 BIO_printf(bio_err," -passout arg output file pass phrase source\n"); 179 BIO_printf(bio_err," -des encrypt PEM output with cbc des\n"); 180 BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 181#ifndef NO_IDEA 182 BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n"); 183#endif 184 BIO_printf(bio_err," -text print the key in text\n"); 185 BIO_printf(bio_err," -noout don't print key out\n"); 186 BIO_printf(bio_err," -modulus print the DSA public value\n"); 187 goto end; 188 } 189 190 ERR_load_crypto_strings(); 191 192 if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 193 BIO_printf(bio_err, "Error getting passwords\n"); 194 goto end; 195 } 196 197 in=BIO_new(BIO_s_file()); 198 out=BIO_new(BIO_s_file()); 199 if ((in == NULL) || (out == NULL)) 200 { 201 ERR_print_errors(bio_err); 202 goto end; 203 } 204 205 if (infile == NULL) 206 BIO_set_fp(in,stdin,BIO_NOCLOSE); 207 else 208 { 209 if (BIO_read_filename(in,infile) <= 0) 210 { 211 perror(infile); 212 goto end; 213 } 214 } 215 216 BIO_printf(bio_err,"read DSA key\n"); 217 if (informat == FORMAT_ASN1) { 218 if(pubin) dsa=d2i_DSA_PUBKEY_bio(in,NULL); 219 else dsa=d2i_DSAPrivateKey_bio(in,NULL); 220 } else if (informat == FORMAT_PEM) { 221 if(pubin) dsa=PEM_read_bio_DSA_PUBKEY(in,NULL, NULL, NULL); 222 else dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL,passin); 223 } else 224 { 225 BIO_printf(bio_err,"bad input format specified for key\n"); 226 goto end; 227 } 228 if (dsa == NULL) 229 { 230 BIO_printf(bio_err,"unable to load Key\n"); 231 ERR_print_errors(bio_err); 232 goto end; 233 } 234 235 if (outfile == NULL) 236 BIO_set_fp(out,stdout,BIO_NOCLOSE); 237 else 238 { 239 if (BIO_write_filename(out,outfile) <= 0) 240 { 241 perror(outfile); 242 goto end; 243 } 244 } 245 246 if (text) 247 if (!DSA_print(out,dsa,0)) 248 { 249 perror(outfile); 250 ERR_print_errors(bio_err); 251 goto end; 252 } 253 254 if (modulus) 255 { 256 fprintf(stdout,"Public Key="); 257 BN_print(out,dsa->pub_key); 258 fprintf(stdout,"\n"); 259 } 260 261 if (noout) goto end; 262 BIO_printf(bio_err,"writing DSA key\n"); 263 if (outformat == FORMAT_ASN1) { 264 if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa); 265 else i=i2d_DSAPrivateKey_bio(out,dsa); 266 } else if (outformat == FORMAT_PEM) { 267 if(pubin || pubout) 268 i=PEM_write_bio_DSA_PUBKEY(out,dsa); 269 else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc, 270 NULL,0,NULL, passout); 271 } else { 272 BIO_printf(bio_err,"bad output format specified for outfile\n"); 273 goto end; 274 } 275 if (!i) 276 { 277 BIO_printf(bio_err,"unable to write private key\n"); 278 ERR_print_errors(bio_err); 279 } 280 else 281 ret=0; 282end: 283 if(in != NULL) BIO_free(in); 284 if(out != NULL) BIO_free(out); 285 if(dsa != NULL) DSA_free(dsa); 286 if(passin) Free(passin); 287 if(passout) Free(passout); 288 EXIT(ret); 289 } 290#endif 291