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/dsa.h>
  68. #include <openssl/evp.h>
  69. #include <openssl/x509.h>
  70. #include <openssl/pem.h>
  71. #include <openssl/bn.h>
  72. #undef PROG
  73. #define PROG dsa_main
  74. /* -inform arg - input format - default PEM (one of DER, NET or PEM)
  75. * -outform arg - output format - default PEM
  76. * -in arg - input file - default stdin
  77. * -out arg - output file - default stdout
  78. * -des - encrypt output if PEM format with DES in cbc mode
  79. * -des3 - encrypt output if PEM format
  80. * -idea - encrypt output if PEM format
  81. * -aes128 - encrypt output if PEM format
  82. * -aes192 - encrypt output if PEM format
  83. * -aes256 - encrypt output if PEM format
  84. * -camellia128 - encrypt output if PEM format
  85. * -camellia192 - encrypt output if PEM format
  86. * -camellia256 - encrypt output if PEM format
  87. * -seed - encrypt output if PEM format
  88. * -text - print a text version
  89. * -modulus - print the DSA public key
  90. */
  91. int MAIN(int, char **);
  92. int MAIN(int argc, char **argv)
  93. {
  94. ENGINE *e = NULL;
  95. int ret=1;
  96. DSA *dsa=NULL;
  97. int i,badops=0;
  98. const EVP_CIPHER *enc=NULL;
  99. BIO *in=NULL,*out=NULL;
  100. int informat,outformat,text=0,noout=0;
  101. int pubin = 0, pubout = 0;
  102. char *infile,*outfile,*prog;
  103. #ifndef OPENSSL_NO_ENGINE
  104. char *engine;
  105. #endif
  106. char *passargin = NULL, *passargout = NULL;
  107. char *passin = NULL, *passout = NULL;
  108. int modulus=0;
  109. int pvk_encr = 2;
  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. {
  128. if (strcmp(*argv,"-inform") == 0)
  129. {
  130. if (--argc < 1) goto bad;
  131. informat=str2fmt(*(++argv));
  132. }
  133. else if (strcmp(*argv,"-outform") == 0)
  134. {
  135. if (--argc < 1) goto bad;
  136. outformat=str2fmt(*(++argv));
  137. }
  138. else if (strcmp(*argv,"-in") == 0)
  139. {
  140. if (--argc < 1) goto bad;
  141. infile= *(++argv);
  142. }
  143. else if (strcmp(*argv,"-out") == 0)
  144. {
  145. if (--argc < 1) goto bad;
  146. outfile= *(++argv);
  147. }
  148. else if (strcmp(*argv,"-passin") == 0)
  149. {
  150. if (--argc < 1) goto bad;
  151. passargin= *(++argv);
  152. }
  153. else if (strcmp(*argv,"-passout") == 0)
  154. {
  155. if (--argc < 1) goto bad;
  156. passargout= *(++argv);
  157. }
  158. #ifndef OPENSSL_NO_ENGINE
  159. else if (strcmp(*argv,"-engine") == 0)
  160. {
  161. if (--argc < 1) goto bad;
  162. engine= *(++argv);
  163. }
  164. #endif
  165. else if (strcmp(*argv,"-pvk-strong") == 0)
  166. pvk_encr=2;
  167. else if (strcmp(*argv,"-pvk-weak") == 0)
  168. pvk_encr=1;
  169. else if (strcmp(*argv,"-pvk-none") == 0)
  170. pvk_encr=0;
  171. else if (strcmp(*argv,"-noout") == 0)
  172. noout=1;
  173. else if (strcmp(*argv,"-text") == 0)
  174. text=1;
  175. else if (strcmp(*argv,"-modulus") == 0)
  176. modulus=1;
  177. else if (strcmp(*argv,"-pubin") == 0)
  178. pubin=1;
  179. else if (strcmp(*argv,"-pubout") == 0)
  180. pubout=1;
  181. else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
  182. {
  183. BIO_printf(bio_err,"unknown option %s\n",*argv);
  184. badops=1;
  185. break;
  186. }
  187. argc--;
  188. argv++;
  189. }
  190. if (badops)
  191. {
  192. bad:
  193. BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
  194. BIO_printf(bio_err,"where options are\n");
  195. BIO_printf(bio_err," -inform arg input format - DER or PEM\n");
  196. BIO_printf(bio_err," -outform arg output format - DER or PEM\n");
  197. BIO_printf(bio_err," -in arg input file\n");
  198. BIO_printf(bio_err," -passin arg input file pass phrase source\n");
  199. BIO_printf(bio_err," -out arg output file\n");
  200. BIO_printf(bio_err," -passout arg output file pass phrase source\n");
  201. #ifndef OPENSSL_NO_ENGINE
  202. BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
  203. #endif
  204. BIO_printf(bio_err," -des encrypt PEM output with cbc des\n");
  205. BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
  206. #ifndef OPENSSL_NO_IDEA
  207. BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n");
  208. #endif
  209. #ifndef OPENSSL_NO_AES
  210. BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
  211. BIO_printf(bio_err," encrypt PEM output with cbc aes\n");
  212. #endif
  213. #ifndef OPENSSL_NO_CAMELLIA
  214. BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
  215. BIO_printf(bio_err," encrypt PEM output with cbc camellia\n");
  216. #endif
  217. #ifndef OPENSSL_NO_SEED
  218. BIO_printf(bio_err," -seed encrypt PEM output with cbc seed\n");
  219. #endif
  220. BIO_printf(bio_err," -text print the key in text\n");
  221. BIO_printf(bio_err," -noout don't print key out\n");
  222. BIO_printf(bio_err," -modulus print the DSA public value\n");
  223. goto end;
  224. }
  225. ERR_load_crypto_strings();
  226. #ifndef OPENSSL_NO_ENGINE
  227. e = setup_engine(bio_err, engine, 0);
  228. #endif
  229. if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
  230. BIO_printf(bio_err, "Error getting passwords\n");
  231. goto end;
  232. }
  233. in=BIO_new(BIO_s_file());
  234. out=BIO_new(BIO_s_file());
  235. if ((in == NULL) || (out == NULL))
  236. {
  237. ERR_print_errors(bio_err);
  238. goto end;
  239. }
  240. if (infile == NULL)
  241. BIO_set_fp(in,stdin,BIO_NOCLOSE);
  242. else
  243. {
  244. if (BIO_read_filename(in,infile) <= 0)
  245. {
  246. perror(infile);
  247. goto end;
  248. }
  249. }
  250. BIO_printf(bio_err,"read DSA key\n");
  251. {
  252. EVP_PKEY *pkey;
  253. if (pubin)
  254. pkey = load_pubkey(bio_err, infile, informat, 1,
  255. passin, e, "Public Key");
  256. else
  257. pkey = load_key(bio_err, infile, informat, 1,
  258. passin, e, "Private Key");
  259. if (pkey)
  260. {
  261. dsa = EVP_PKEY_get1_DSA(pkey);
  262. EVP_PKEY_free(pkey);
  263. }
  264. }
  265. if (dsa == NULL)
  266. {
  267. BIO_printf(bio_err,"unable to load Key\n");
  268. ERR_print_errors(bio_err);
  269. goto end;
  270. }
  271. if (outfile == NULL)
  272. {
  273. BIO_set_fp(out,stdout,BIO_NOCLOSE);
  274. #ifdef OPENSSL_SYS_VMS
  275. {
  276. BIO *tmpbio = BIO_new(BIO_f_linebuffer());
  277. out = BIO_push(tmpbio, out);
  278. }
  279. #endif
  280. }
  281. else
  282. {
  283. if (BIO_write_filename(out,outfile) <= 0)
  284. {
  285. perror(outfile);
  286. goto end;
  287. }
  288. }
  289. if (text)
  290. if (!DSA_print(out,dsa,0))
  291. {
  292. perror(outfile);
  293. ERR_print_errors(bio_err);
  294. goto end;
  295. }
  296. if (modulus)
  297. {
  298. fprintf(stdout,"Public Key=");
  299. BN_print(out,dsa->pub_key);
  300. fprintf(stdout,"\n");
  301. }
  302. if (noout) goto end;
  303. BIO_printf(bio_err,"writing DSA key\n");
  304. if (outformat == FORMAT_ASN1) {
  305. if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
  306. else i=i2d_DSAPrivateKey_bio(out,dsa);
  307. } else if (outformat == FORMAT_PEM) {
  308. if(pubin || pubout)
  309. i=PEM_write_bio_DSA_PUBKEY(out,dsa);
  310. else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
  311. NULL,0,NULL, passout);
  312. #ifndef OPENSSL_NO_RSA
  313. } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
  314. EVP_PKEY *pk;
  315. pk = EVP_PKEY_new();
  316. EVP_PKEY_set1_DSA(pk, dsa);
  317. if (outformat == FORMAT_PVK)
  318. i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
  319. else if (pubin || pubout)
  320. i = i2b_PublicKey_bio(out, pk);
  321. else
  322. i = i2b_PrivateKey_bio(out, pk);
  323. EVP_PKEY_free(pk);
  324. #endif
  325. } else {
  326. BIO_printf(bio_err,"bad output format specified for outfile\n");
  327. goto end;
  328. }
  329. if (!i)
  330. {
  331. BIO_printf(bio_err,"unable to write private key\n");
  332. ERR_print_errors(bio_err);
  333. }
  334. else
  335. ret=0;
  336. end:
  337. if(in != NULL) BIO_free(in);
  338. if(out != NULL) BIO_free_all(out);
  339. if(dsa != NULL) DSA_free(dsa);
  340. if(passin) OPENSSL_free(passin);
  341. if(passout) OPENSSL_free(passout);
  342. apps_shutdown();
  343. OPENSSL_EXIT(ret);
  344. }
  345. #else /* !OPENSSL_NO_DSA */
  346. # if PEDANTIC
  347. static void *dummy=&dummy;
  348. # endif
  349. #endif