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 86 int MAIN(int argc, char **argv) 87 { 88 int ret=1; 89 DSA *dsa=NULL; 90 int i,badops=0; 91 const EVP_CIPHER *enc=NULL; 92 BIO *in=NULL,*out=NULL; 93 int informat,outformat,text=0,noout=0; 94 char *infile,*outfile,*prog; 95 int modulus=0; 96 97 apps_startup(); 98 99 if (bio_err == NULL) 100 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 101 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 102 103 infile=NULL; 104 outfile=NULL; 105 informat=FORMAT_PEM; 106 outformat=FORMAT_PEM; 107 108 prog=argv[0]; 109 argc--; 110 argv++; 111 while (argc >= 1) 112 { 113 if (strcmp(*argv,"-inform") == 0) 114 { 115 if (--argc < 1) goto bad; 116 informat=str2fmt(*(++argv)); 117 } 118 else if (strcmp(*argv,"-outform") == 0) 119 { 120 if (--argc < 1) goto bad; 121 outformat=str2fmt(*(++argv)); 122 } 123 else if (strcmp(*argv,"-in") == 0) 124 { 125 if (--argc < 1) goto bad; 126 infile= *(++argv); 127 } 128 else if (strcmp(*argv,"-out") == 0) 129 { 130 if (--argc < 1) goto bad; 131 outfile= *(++argv); 132 } 133 else if (strcmp(*argv,"-noout") == 0) 134 noout=1; 135 else if (strcmp(*argv,"-text") == 0) 136 text=1; 137 else if (strcmp(*argv,"-modulus") == 0) 138 modulus=1; 139 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL) 140 { 141 BIO_printf(bio_err,"unknown option %s\n",*argv); 142 badops=1; 143 break; 144 } 145 argc--; 146 argv++; 147 } 148 149 if (badops) 150 { 151 bad: 152 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 153 BIO_printf(bio_err,"where options are\n"); 154 BIO_printf(bio_err," -inform arg input format - one of DER NET PEM\n"); 155 BIO_printf(bio_err," -outform arg output format - one of DER NET PEM\n"); 156 BIO_printf(bio_err," -in arg input file\n"); 157 BIO_printf(bio_err," -out arg output file\n"); 158 BIO_printf(bio_err," -des encrypt PEM output with cbc des\n"); 159 BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 160 #ifndef NO_IDEA 161 BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n"); 162 #endif 163 BIO_printf(bio_err," -text print the key in text\n"); 164 BIO_printf(bio_err," -noout don't print key out\n"); 165 BIO_printf(bio_err," -modulus print the DSA public value\n"); 166 goto end; 167 } 168 169 ERR_load_crypto_strings(); 170 171 in=BIO_new(BIO_s_file()); 172 out=BIO_new(BIO_s_file()); 173 if ((in == NULL) || (out == NULL)) 174 { 175 ERR_print_errors(bio_err); 176 goto end; 177 } 178 179 if (infile == NULL) 180 BIO_set_fp(in,stdin,BIO_NOCLOSE); 181 else 182 { 183 if (BIO_read_filename(in,infile) <= 0) 184 { 185 perror(infile); 186 goto end; 187 } 188 } 189 190 BIO_printf(bio_err,"read DSA private key\n"); 191 if (informat == FORMAT_ASN1) 192 dsa=d2i_DSAPrivateKey_bio(in,NULL); 193 else if (informat == FORMAT_PEM) 194 dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL,NULL); 195 else 196 { 197 BIO_printf(bio_err,"bad input format specified for key\n"); 198 goto end; 199 } 200 if (dsa == NULL) 201 { 202 BIO_printf(bio_err,"unable to load Private Key\n"); 203 ERR_print_errors(bio_err); 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 (text) 219 if (!DSA_print(out,dsa,0)) 220 { 221 perror(outfile); 222 ERR_print_errors(bio_err); 223 goto end; 224 } 225 226 if (modulus) 227 { 228 fprintf(stdout,"Public Key="); 229 BN_print(out,dsa->pub_key); 230 fprintf(stdout,"\n"); 231 } 232 233 if (noout) goto end; 234 BIO_printf(bio_err,"writing DSA private key\n"); 235 if (outformat == FORMAT_ASN1) 236 i=i2d_DSAPrivateKey_bio(out,dsa); 237 else if (outformat == FORMAT_PEM) 238 i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL,NULL); 239 else { 240 BIO_printf(bio_err,"bad output format specified for outfile\n"); 241 goto end; 242 } 243 if (!i) 244 { 245 BIO_printf(bio_err,"unable to write private key\n"); 246 ERR_print_errors(bio_err); 247 } 248 else 249 ret=0; 250 end: 251 if (in != NULL) BIO_free(in); 252 if (out != NULL) BIO_free(out); 253 if (dsa != NULL) DSA_free(dsa); 254 EXIT(ret); 255 } 256 #endif 257