dsa.c 11 KB

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  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. #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
  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/evp.h>
  68. # include <openssl/x509.h>
  69. # include <openssl/pem.h>
  70. # include <openssl/bn.h>
  71. # include <openssl/dsa.h>
  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. * -camellia128 - encrypt output if PEM format
  86. * -camellia192 - encrypt output if PEM format
  87. * -camellia256 - encrypt output if PEM format
  88. * -seed - encrypt output if PEM format
  89. * -text - print a text version
  90. * -modulus - print the DSA public key
  91. */
  92. int MAIN(int, char **);
  93. int MAIN(int argc, char **argv)
  94. {
  95. ENGINE *e = NULL;
  96. int ret = 1;
  97. DSA *dsa = NULL;
  98. int i, badops = 0;
  99. const EVP_CIPHER *enc = NULL;
  100. BIO *in = NULL, *out = NULL;
  101. int informat, outformat, text = 0, noout = 0;
  102. int pubin = 0, pubout = 0;
  103. char *infile, *outfile, *prog;
  104. # ifndef OPENSSL_NO_ENGINE
  105. char *engine;
  106. # endif
  107. char *passargin = NULL, *passargout = NULL;
  108. char *passin = NULL, *passout = NULL;
  109. int modulus = 0;
  110. apps_startup();
  111. if (bio_err == NULL)
  112. if ((bio_err = BIO_new(BIO_s_file())) != NULL)
  113. BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
  114. if (!load_config(bio_err, NULL))
  115. goto end;
  116. # ifndef OPENSSL_NO_ENGINE
  117. engine = NULL;
  118. # endif
  119. infile = NULL;
  120. outfile = NULL;
  121. informat = FORMAT_PEM;
  122. outformat = FORMAT_PEM;
  123. prog = argv[0];
  124. argc--;
  125. argv++;
  126. while (argc >= 1) {
  127. if (strcmp(*argv, "-inform") == 0) {
  128. if (--argc < 1)
  129. goto bad;
  130. informat = str2fmt(*(++argv));
  131. } else if (strcmp(*argv, "-outform") == 0) {
  132. if (--argc < 1)
  133. goto bad;
  134. outformat = str2fmt(*(++argv));
  135. } else if (strcmp(*argv, "-in") == 0) {
  136. if (--argc < 1)
  137. goto bad;
  138. infile = *(++argv);
  139. } else if (strcmp(*argv, "-out") == 0) {
  140. if (--argc < 1)
  141. goto bad;
  142. outfile = *(++argv);
  143. } else if (strcmp(*argv, "-passin") == 0) {
  144. if (--argc < 1)
  145. goto bad;
  146. passargin = *(++argv);
  147. } else if (strcmp(*argv, "-passout") == 0) {
  148. if (--argc < 1)
  149. goto bad;
  150. passargout = *(++argv);
  151. }
  152. # ifndef OPENSSL_NO_ENGINE
  153. else if (strcmp(*argv, "-engine") == 0) {
  154. if (--argc < 1)
  155. goto bad;
  156. engine = *(++argv);
  157. }
  158. # endif
  159. else if (strcmp(*argv, "-noout") == 0)
  160. noout = 1;
  161. else if (strcmp(*argv, "-text") == 0)
  162. text = 1;
  163. else if (strcmp(*argv, "-modulus") == 0)
  164. modulus = 1;
  165. else if (strcmp(*argv, "-pubin") == 0)
  166. pubin = 1;
  167. else if (strcmp(*argv, "-pubout") == 0)
  168. pubout = 1;
  169. else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) {
  170. BIO_printf(bio_err, "unknown option %s\n", *argv);
  171. badops = 1;
  172. break;
  173. }
  174. argc--;
  175. argv++;
  176. }
  177. if (badops) {
  178. bad:
  179. BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
  180. BIO_printf(bio_err, "where options are\n");
  181. BIO_printf(bio_err, " -inform arg input format - DER or PEM\n");
  182. BIO_printf(bio_err, " -outform arg output format - DER or PEM\n");
  183. BIO_printf(bio_err, " -in arg input file\n");
  184. BIO_printf(bio_err,
  185. " -passin arg input file pass phrase source\n");
  186. BIO_printf(bio_err, " -out arg output file\n");
  187. BIO_printf(bio_err,
  188. " -passout arg output file pass phrase source\n");
  189. # ifndef OPENSSL_NO_ENGINE
  190. BIO_printf(bio_err,
  191. " -engine e use engine e, possibly a hardware device.\n");
  192. # endif
  193. BIO_printf(bio_err,
  194. " -des encrypt PEM output with cbc des\n");
  195. BIO_printf(bio_err,
  196. " -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
  197. # ifndef OPENSSL_NO_IDEA
  198. BIO_printf(bio_err,
  199. " -idea encrypt PEM output with cbc idea\n");
  200. # endif
  201. # ifndef OPENSSL_NO_AES
  202. BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
  203. BIO_printf(bio_err,
  204. " encrypt PEM output with cbc aes\n");
  205. # endif
  206. # ifndef OPENSSL_NO_CAMELLIA
  207. BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
  208. BIO_printf(bio_err,
  209. " encrypt PEM output with cbc camellia\n");
  210. # endif
  211. # ifndef OPENSSL_NO_SEED
  212. BIO_printf(bio_err,
  213. " -seed encrypt PEM output with cbc seed\n");
  214. # endif
  215. BIO_printf(bio_err, " -text print the key in text\n");
  216. BIO_printf(bio_err, " -noout don't print key out\n");
  217. BIO_printf(bio_err, " -modulus print the DSA public value\n");
  218. goto end;
  219. }
  220. ERR_load_crypto_strings();
  221. # ifndef OPENSSL_NO_ENGINE
  222. e = setup_engine(bio_err, engine, 0);
  223. # endif
  224. if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
  225. BIO_printf(bio_err, "Error getting passwords\n");
  226. goto end;
  227. }
  228. out = BIO_new(BIO_s_file());
  229. if (out == NULL) {
  230. ERR_print_errors(bio_err);
  231. goto end;
  232. }
  233. BIO_printf(bio_err, "read DSA key\n");
  234. {
  235. EVP_PKEY *pkey;
  236. if (pubin)
  237. pkey = load_pubkey(bio_err, infile, informat, 1,
  238. passin, e, "Public Key");
  239. else
  240. pkey = load_key(bio_err, infile, informat, 1,
  241. passin, e, "Private Key");
  242. if (pkey != NULL)
  243. dsa = pkey == NULL ? NULL : EVP_PKEY_get1_DSA(pkey);
  244. EVP_PKEY_free(pkey);
  245. }
  246. if (dsa == NULL) {
  247. BIO_printf(bio_err, "unable to load Key\n");
  248. ERR_print_errors(bio_err);
  249. goto end;
  250. }
  251. if (outfile == NULL) {
  252. BIO_set_fp(out, stdout, BIO_NOCLOSE);
  253. # ifdef OPENSSL_SYS_VMS
  254. {
  255. BIO *tmpbio = BIO_new(BIO_f_linebuffer());
  256. out = BIO_push(tmpbio, out);
  257. }
  258. # endif
  259. } else {
  260. if (BIO_write_filename(out, outfile) <= 0) {
  261. perror(outfile);
  262. goto end;
  263. }
  264. }
  265. if (text)
  266. if (!DSA_print(out, dsa, 0)) {
  267. perror(outfile);
  268. ERR_print_errors(bio_err);
  269. goto end;
  270. }
  271. if (modulus) {
  272. fprintf(stdout, "Public Key=");
  273. BN_print(out, dsa->pub_key);
  274. fprintf(stdout, "\n");
  275. }
  276. if (noout)
  277. goto end;
  278. BIO_printf(bio_err, "writing DSA key\n");
  279. if (outformat == FORMAT_ASN1) {
  280. if (pubin || pubout)
  281. i = i2d_DSA_PUBKEY_bio(out, dsa);
  282. else
  283. i = i2d_DSAPrivateKey_bio(out, dsa);
  284. } else if (outformat == FORMAT_PEM) {
  285. if (pubin || pubout)
  286. i = PEM_write_bio_DSA_PUBKEY(out, dsa);
  287. else
  288. i = PEM_write_bio_DSAPrivateKey(out, dsa, enc,
  289. NULL, 0, NULL, passout);
  290. } else {
  291. BIO_printf(bio_err, "bad output format specified for outfile\n");
  292. goto end;
  293. }
  294. if (!i) {
  295. BIO_printf(bio_err, "unable to write private key\n");
  296. ERR_print_errors(bio_err);
  297. } else
  298. ret = 0;
  299. end:
  300. if (in != NULL)
  301. BIO_free(in);
  302. if (out != NULL)
  303. BIO_free_all(out);
  304. if (dsa != NULL)
  305. DSA_free(dsa);
  306. if (passin)
  307. OPENSSL_free(passin);
  308. if (passout)
  309. OPENSSL_free(passout);
  310. apps_shutdown();
  311. OPENSSL_EXIT(ret);
  312. }
  313. #endif