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gendsa.c 9.7 KB

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  1. /* apps/gendsa.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. #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
  59. #ifndef OPENSSL_NO_DSA
  60. # include <stdio.h>
  61. # include <string.h>
  62. # include <sys/types.h>
  63. # include <sys/stat.h>
  64. # include "apps.h"
  65. # include <openssl/bio.h>
  66. # include <openssl/err.h>
  67. # include <openssl/bn.h>
  68. # include <openssl/dsa.h>
  69. # include <openssl/x509.h>
  70. # include <openssl/pem.h>
  71. # define DEFBITS 512
  72. # undef PROG
  73. # define PROG gendsa_main
  74. int MAIN(int, char **);
  75. int MAIN(int argc, char **argv)
  76. {
  77. DSA *dsa = NULL;
  78. int ret = 1;
  79. char *outfile = NULL;
  80. char *inrand = NULL, *dsaparams = NULL;
  81. char *passargout = NULL, *passout = NULL;
  82. BIO *out = NULL, *in = NULL;
  83. const EVP_CIPHER *enc = NULL;
  84. # ifndef OPENSSL_NO_ENGINE
  85. char *engine = NULL;
  86. # endif
  87. apps_startup();
  88. if (bio_err == NULL)
  89. if ((bio_err = BIO_new(BIO_s_file())) != NULL)
  90. BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
  91. if (!load_config(bio_err, NULL))
  92. goto end;
  93. argv++;
  94. argc--;
  95. for (;;) {
  96. if (argc <= 0)
  97. break;
  98. if (strcmp(*argv, "-out") == 0) {
  99. if (--argc < 1)
  100. goto bad;
  101. outfile = *(++argv);
  102. } else if (strcmp(*argv, "-passout") == 0) {
  103. if (--argc < 1)
  104. goto bad;
  105. passargout = *(++argv);
  106. }
  107. # ifndef OPENSSL_NO_ENGINE
  108. else if (strcmp(*argv, "-engine") == 0) {
  109. if (--argc < 1)
  110. goto bad;
  111. engine = *(++argv);
  112. }
  113. # endif
  114. else if (strcmp(*argv, "-rand") == 0) {
  115. if (--argc < 1)
  116. goto bad;
  117. inrand = *(++argv);
  118. } else if (strcmp(*argv, "-") == 0)
  119. goto bad;
  120. # ifndef OPENSSL_NO_DES
  121. else if (strcmp(*argv, "-des") == 0)
  122. enc = EVP_des_cbc();
  123. else if (strcmp(*argv, "-des3") == 0)
  124. enc = EVP_des_ede3_cbc();
  125. # endif
  126. # ifndef OPENSSL_NO_IDEA
  127. else if (strcmp(*argv, "-idea") == 0)
  128. enc = EVP_idea_cbc();
  129. # endif
  130. # ifndef OPENSSL_NO_SEED
  131. else if (strcmp(*argv, "-seed") == 0)
  132. enc = EVP_seed_cbc();
  133. # endif
  134. # ifndef OPENSSL_NO_AES
  135. else if (strcmp(*argv, "-aes128") == 0)
  136. enc = EVP_aes_128_cbc();
  137. else if (strcmp(*argv, "-aes192") == 0)
  138. enc = EVP_aes_192_cbc();
  139. else if (strcmp(*argv, "-aes256") == 0)
  140. enc = EVP_aes_256_cbc();
  141. # endif
  142. # ifndef OPENSSL_NO_CAMELLIA
  143. else if (strcmp(*argv, "-camellia128") == 0)
  144. enc = EVP_camellia_128_cbc();
  145. else if (strcmp(*argv, "-camellia192") == 0)
  146. enc = EVP_camellia_192_cbc();
  147. else if (strcmp(*argv, "-camellia256") == 0)
  148. enc = EVP_camellia_256_cbc();
  149. # endif
  150. else if (**argv != '-' && dsaparams == NULL) {
  151. dsaparams = *argv;
  152. } else
  153. goto bad;
  154. argv++;
  155. argc--;
  156. }
  157. if (dsaparams == NULL) {
  158. bad:
  159. BIO_printf(bio_err, "usage: gendsa [args] dsaparam-file\n");
  160. BIO_printf(bio_err, " -out file - output the key to 'file'\n");
  161. # ifndef OPENSSL_NO_DES
  162. BIO_printf(bio_err,
  163. " -des - encrypt the generated key with DES in cbc mode\n");
  164. BIO_printf(bio_err,
  165. " -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
  166. # endif
  167. # ifndef OPENSSL_NO_IDEA
  168. BIO_printf(bio_err,
  169. " -idea - encrypt the generated key with IDEA in cbc mode\n");
  170. # endif
  171. # ifndef OPENSSL_NO_SEED
  172. BIO_printf(bio_err, " -seed\n");
  173. BIO_printf(bio_err,
  174. " encrypt PEM output with cbc seed\n");
  175. # endif
  176. # ifndef OPENSSL_NO_AES
  177. BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
  178. BIO_printf(bio_err,
  179. " encrypt PEM output with cbc aes\n");
  180. # endif
  181. # ifndef OPENSSL_NO_CAMELLIA
  182. BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
  183. BIO_printf(bio_err,
  184. " encrypt PEM output with cbc camellia\n");
  185. # endif
  186. # ifndef OPENSSL_NO_ENGINE
  187. BIO_printf(bio_err,
  188. " -engine e - use engine e, possibly a hardware device.\n");
  189. # endif
  190. BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR,
  191. LIST_SEPARATOR_CHAR);
  192. BIO_printf(bio_err,
  193. " - load the file (or the files in the directory) into\n");
  194. BIO_printf(bio_err, " the random number generator\n");
  195. BIO_printf(bio_err, " dsaparam-file\n");
  196. BIO_printf(bio_err,
  197. " - a DSA parameter file as generated by the dsaparam command\n");
  198. goto end;
  199. }
  200. # ifndef OPENSSL_NO_ENGINE
  201. setup_engine(bio_err, engine, 0);
  202. # endif
  203. if (!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
  204. BIO_printf(bio_err, "Error getting password\n");
  205. goto end;
  206. }
  207. in = BIO_new(BIO_s_file());
  208. if (!(BIO_read_filename(in, dsaparams))) {
  209. perror(dsaparams);
  210. goto end;
  211. }
  212. if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) {
  213. BIO_printf(bio_err, "unable to load DSA parameter file\n");
  214. goto end;
  215. }
  216. BIO_free(in);
  217. in = NULL;
  218. out = BIO_new(BIO_s_file());
  219. if (out == NULL)
  220. goto end;
  221. if (outfile == NULL) {
  222. BIO_set_fp(out, stdout, BIO_NOCLOSE);
  223. # ifdef OPENSSL_SYS_VMS
  224. {
  225. BIO *tmpbio = BIO_new(BIO_f_linebuffer());
  226. out = BIO_push(tmpbio, out);
  227. }
  228. # endif
  229. } else {
  230. if (BIO_write_filename(out, outfile) <= 0) {
  231. perror(outfile);
  232. goto end;
  233. }
  234. }
  235. if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) {
  236. BIO_printf(bio_err,
  237. "warning, not much extra random data, consider using the -rand option\n");
  238. }
  239. if (inrand != NULL)
  240. BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
  241. app_RAND_load_files(inrand));
  242. BIO_printf(bio_err, "Generating DSA key, %d bits\n", BN_num_bits(dsa->p));
  243. if (!DSA_generate_key(dsa))
  244. goto end;
  245. app_RAND_write_file(NULL, bio_err);
  246. if (!PEM_write_bio_DSAPrivateKey(out, dsa, enc, NULL, 0, NULL, passout))
  247. goto end;
  248. ret = 0;
  249. end:
  250. if (ret != 0)
  251. ERR_print_errors(bio_err);
  252. if (in != NULL)
  253. BIO_free(in);
  254. if (out != NULL)
  255. BIO_free_all(out);
  256. if (dsa != NULL)
  257. DSA_free(dsa);
  258. if (passout)
  259. OPENSSL_free(passout);
  260. apps_shutdown();
  261. OPENSSL_EXIT(ret);
  262. }
  263. #else /* !OPENSSL_NO_DSA */
  264. # if PEDANTIC
  265. static void *dummy = &dummy;
  266. # endif
  267. #endif