1 /* 2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <openssl/opensslconf.h> 11 #ifdef OPENSSL_NO_DSA 12 NON_EMPTY_TRANSLATION_UNIT 13 #else 14 15 # include <stdio.h> 16 # include <stdlib.h> 17 # include <string.h> 18 # include <time.h> 19 # include "apps.h" 20 # include <openssl/bio.h> 21 # include <openssl/err.h> 22 # include <openssl/dsa.h> 23 # include <openssl/evp.h> 24 # include <openssl/x509.h> 25 # include <openssl/pem.h> 26 # include <openssl/bn.h> 27 28 typedef enum OPTION_choice { 29 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, 30 OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_ENGINE, 31 /* Do not change the order here; see case statements below */ 32 OPT_PVK_NONE, OPT_PVK_WEAK, OPT_PVK_STRONG, 33 OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_PUBIN, 34 OPT_PUBOUT, OPT_CIPHER, OPT_PASSIN, OPT_PASSOUT 35 } OPTION_CHOICE; 36 37 OPTIONS dsa_options[] = { 38 {"help", OPT_HELP, '-', "Display this summary"}, 39 {"inform", OPT_INFORM, 'f', "Input format, DER PEM PVK"}, 40 {"outform", OPT_OUTFORM, 'f', "Output format, DER PEM PVK"}, 41 {"in", OPT_IN, 's', "Input key"}, 42 {"out", OPT_OUT, '>', "Output file"}, 43 {"noout", OPT_NOOUT, '-', "Don't print key out"}, 44 {"text", OPT_TEXT, '-', "Print the key in text"}, 45 {"modulus", OPT_MODULUS, '-', "Print the DSA public value"}, 46 {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"}, 47 {"pubout", OPT_PUBOUT, '-', "Output public key, not private"}, 48 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, 49 {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, 50 {"", OPT_CIPHER, '-', "Any supported cipher"}, 51 # ifndef OPENSSL_NO_RC4 52 {"pvk-strong", OPT_PVK_STRONG, '-', "Enable 'Strong' PVK encoding level (default)"}, 53 {"pvk-weak", OPT_PVK_WEAK, '-', "Enable 'Weak' PVK encoding level"}, 54 {"pvk-none", OPT_PVK_NONE, '-', "Don't enforce PVK encoding"}, 55 # endif 56 # ifndef OPENSSL_NO_ENGINE 57 {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"}, 58 # endif 59 {NULL} 60 }; 61 62 int dsa_main(int argc, char **argv) 63 { 64 BIO *out = NULL; 65 DSA *dsa = NULL; 66 ENGINE *e = NULL; 67 const EVP_CIPHER *enc = NULL; 68 char *infile = NULL, *outfile = NULL, *prog; 69 char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL; 70 OPTION_CHOICE o; 71 int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0; 72 int i, modulus = 0, pubin = 0, pubout = 0, ret = 1; 73 # ifndef OPENSSL_NO_RC4 74 int pvk_encr = 2; 75 # endif 76 int private = 0; 77 78 prog = opt_init(argc, argv, dsa_options); 79 while ((o = opt_next()) != OPT_EOF) { 80 switch (o) { 81 case OPT_EOF: 82 case OPT_ERR: 83 opthelp: 84 ret = 0; 85 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 86 goto end; 87 case OPT_HELP: 88 opt_help(dsa_options); 89 ret = 0; 90 goto end; 91 case OPT_INFORM: 92 if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat)) 93 goto opthelp; 94 break; 95 case OPT_IN: 96 infile = opt_arg(); 97 break; 98 case OPT_OUTFORM: 99 if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat)) 100 goto opthelp; 101 break; 102 case OPT_OUT: 103 outfile = opt_arg(); 104 break; 105 case OPT_ENGINE: 106 e = setup_engine(opt_arg(), 0); 107 break; 108 case OPT_PASSIN: 109 passinarg = opt_arg(); 110 break; 111 case OPT_PASSOUT: 112 passoutarg = opt_arg(); 113 break; 114 case OPT_PVK_STRONG: /* pvk_encr:= 2 */ 115 case OPT_PVK_WEAK: /* pvk_encr:= 1 */ 116 case OPT_PVK_NONE: /* pvk_encr:= 0 */ 117 #ifndef OPENSSL_NO_RC4 118 pvk_encr = (o - OPT_PVK_NONE); 119 #endif 120 break; 121 case OPT_NOOUT: 122 noout = 1; 123 break; 124 case OPT_TEXT: 125 text = 1; 126 break; 127 case OPT_MODULUS: 128 modulus = 1; 129 break; 130 case OPT_PUBIN: 131 pubin = 1; 132 break; 133 case OPT_PUBOUT: 134 pubout = 1; 135 break; 136 case OPT_CIPHER: 137 if (!opt_cipher(opt_unknown(), &enc)) 138 goto end; 139 break; 140 } 141 } 142 argc = opt_num_rest(); 143 if (argc != 0) 144 goto opthelp; 145 146 private = pubin || pubout ? 0 : 1; 147 if (text && !pubin) 148 private = 1; 149 150 if (!app_passwd(passinarg, passoutarg, &passin, &passout)) { 151 BIO_printf(bio_err, "Error getting passwords\n"); 152 goto end; 153 } 154 155 BIO_printf(bio_err, "read DSA key\n"); 156 { 157 EVP_PKEY *pkey; 158 159 if (pubin) 160 pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key"); 161 else 162 pkey = load_key(infile, informat, 1, passin, e, "Private Key"); 163 164 if (pkey) { 165 dsa = EVP_PKEY_get1_DSA(pkey); 166 EVP_PKEY_free(pkey); 167 } 168 } 169 if (dsa == NULL) { 170 BIO_printf(bio_err, "unable to load Key\n"); 171 ERR_print_errors(bio_err); 172 goto end; 173 } 174 175 out = bio_open_owner(outfile, outformat, private); 176 if (out == NULL) 177 goto end; 178 179 if (text) { 180 assert(pubin || private); 181 if (!DSA_print(out, dsa, 0)) { 182 perror(outfile); 183 ERR_print_errors(bio_err); 184 goto end; 185 } 186 } 187 188 if (modulus) { 189 const BIGNUM *pub_key = NULL; 190 DSA_get0_key(dsa, &pub_key, NULL); 191 BIO_printf(out, "Public Key="); 192 BN_print(out, pub_key); 193 BIO_printf(out, "\n"); 194 } 195 196 if (noout) { 197 ret = 0; 198 goto end; 199 } 200 BIO_printf(bio_err, "writing DSA key\n"); 201 if (outformat == FORMAT_ASN1) { 202 if (pubin || pubout) 203 i = i2d_DSA_PUBKEY_bio(out, dsa); 204 else { 205 assert(private); 206 i = i2d_DSAPrivateKey_bio(out, dsa); 207 } 208 } else if (outformat == FORMAT_PEM) { 209 if (pubin || pubout) 210 i = PEM_write_bio_DSA_PUBKEY(out, dsa); 211 else { 212 assert(private); 213 i = PEM_write_bio_DSAPrivateKey(out, dsa, enc, 214 NULL, 0, NULL, passout); 215 } 216 # ifndef OPENSSL_NO_RSA 217 } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) { 218 EVP_PKEY *pk; 219 pk = EVP_PKEY_new(); 220 if (pk == NULL) 221 goto end; 222 223 EVP_PKEY_set1_DSA(pk, dsa); 224 if (outformat == FORMAT_PVK) { 225 if (pubin) { 226 BIO_printf(bio_err, "PVK form impossible with public key input\n"); 227 EVP_PKEY_free(pk); 228 goto end; 229 } 230 assert(private); 231 # ifdef OPENSSL_NO_RC4 232 BIO_printf(bio_err, "PVK format not supported\n"); 233 EVP_PKEY_free(pk); 234 goto end; 235 # else 236 i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout); 237 # endif 238 } 239 else if (pubin || pubout) 240 i = i2b_PublicKey_bio(out, pk); 241 else { 242 assert(private); 243 i = i2b_PrivateKey_bio(out, pk); 244 } 245 EVP_PKEY_free(pk); 246 # endif 247 } else { 248 BIO_printf(bio_err, "bad output format specified for outfile\n"); 249 goto end; 250 } 251 if (i <= 0) { 252 BIO_printf(bio_err, "unable to write private key\n"); 253 ERR_print_errors(bio_err); 254 goto end; 255 } 256 ret = 0; 257 end: 258 BIO_free_all(out); 259 DSA_free(dsa); 260 release_engine(e); 261 OPENSSL_free(passin); 262 OPENSSL_free(passout); 263 return (ret); 264 } 265 #endif 266