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rsa.c 12 KB

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  1. /* apps/rsa.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>
  59. #ifndef OPENSSL_NO_RSA
  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/rsa.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 rsa_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. * -text - print a text version
  85. * -modulus - print the RSA key modulus
  86. * -check - verify key consistency
  87. * -pubin - Expect a public key in input file.
  88. * -pubout - Output a public key.
  89. */
  90. int MAIN(int, char **);
  91. int MAIN(int argc, char **argv)
  92. {
  93. ENGINE *e = NULL;
  94. int ret=1;
  95. RSA *rsa=NULL;
  96. int i,badops=0, sgckey=0;
  97. const EVP_CIPHER *enc=NULL;
  98. BIO *out=NULL;
  99. int informat,outformat,text=0,check=0,noout=0;
  100. int pubin = 0, pubout = 0;
  101. char *infile,*outfile,*prog;
  102. char *passargin = NULL, *passargout = NULL;
  103. char *passin = NULL, *passout = NULL;
  104. #ifndef OPENSSL_NO_ENGINE
  105. char *engine=NULL;
  106. #endif
  107. int modulus=0;
  108. int pvk_encr = 2;
  109. apps_startup();
  110. if (bio_err == NULL)
  111. if ((bio_err=BIO_new(BIO_s_file())) != NULL)
  112. BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
  113. if (!load_config(bio_err, NULL))
  114. goto end;
  115. infile=NULL;
  116. outfile=NULL;
  117. informat=FORMAT_PEM;
  118. outformat=FORMAT_PEM;
  119. prog=argv[0];
  120. argc--;
  121. argv++;
  122. while (argc >= 1)
  123. {
  124. if (strcmp(*argv,"-inform") == 0)
  125. {
  126. if (--argc < 1) goto bad;
  127. informat=str2fmt(*(++argv));
  128. }
  129. else if (strcmp(*argv,"-outform") == 0)
  130. {
  131. if (--argc < 1) goto bad;
  132. outformat=str2fmt(*(++argv));
  133. }
  134. else if (strcmp(*argv,"-in") == 0)
  135. {
  136. if (--argc < 1) goto bad;
  137. infile= *(++argv);
  138. }
  139. else if (strcmp(*argv,"-out") == 0)
  140. {
  141. if (--argc < 1) goto bad;
  142. outfile= *(++argv);
  143. }
  144. else if (strcmp(*argv,"-passin") == 0)
  145. {
  146. if (--argc < 1) goto bad;
  147. passargin= *(++argv);
  148. }
  149. else if (strcmp(*argv,"-passout") == 0)
  150. {
  151. if (--argc < 1) goto bad;
  152. passargout= *(++argv);
  153. }
  154. #ifndef OPENSSL_NO_ENGINE
  155. else if (strcmp(*argv,"-engine") == 0)
  156. {
  157. if (--argc < 1) goto bad;
  158. engine= *(++argv);
  159. }
  160. #endif
  161. else if (strcmp(*argv,"-sgckey") == 0)
  162. sgckey=1;
  163. else if (strcmp(*argv,"-pubin") == 0)
  164. pubin=1;
  165. else if (strcmp(*argv,"-pubout") == 0)
  166. pubout=1;
  167. else if (strcmp(*argv,"-RSAPublicKey_in") == 0)
  168. pubin = 2;
  169. else if (strcmp(*argv,"-RSAPublicKey_out") == 0)
  170. pubout = 2;
  171. else if (strcmp(*argv,"-pvk-strong") == 0)
  172. pvk_encr=2;
  173. else if (strcmp(*argv,"-pvk-weak") == 0)
  174. pvk_encr=1;
  175. else if (strcmp(*argv,"-pvk-none") == 0)
  176. pvk_encr=0;
  177. else if (strcmp(*argv,"-noout") == 0)
  178. noout=1;
  179. else if (strcmp(*argv,"-text") == 0)
  180. text=1;
  181. else if (strcmp(*argv,"-modulus") == 0)
  182. modulus=1;
  183. else if (strcmp(*argv,"-check") == 0)
  184. check=1;
  185. else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
  186. {
  187. BIO_printf(bio_err,"unknown option %s\n",*argv);
  188. badops=1;
  189. break;
  190. }
  191. argc--;
  192. argv++;
  193. }
  194. if (badops)
  195. {
  196. bad:
  197. BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
  198. BIO_printf(bio_err,"where options are\n");
  199. BIO_printf(bio_err," -inform arg input format - one of DER NET PEM\n");
  200. BIO_printf(bio_err," -outform arg output format - one of DER NET PEM\n");
  201. BIO_printf(bio_err," -in arg input file\n");
  202. BIO_printf(bio_err," -sgckey Use IIS SGC key format\n");
  203. BIO_printf(bio_err," -passin arg input file pass phrase source\n");
  204. BIO_printf(bio_err," -out arg output file\n");
  205. BIO_printf(bio_err," -passout arg output file pass phrase source\n");
  206. BIO_printf(bio_err," -des encrypt PEM output with cbc des\n");
  207. BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
  208. #ifndef OPENSSL_NO_IDEA
  209. BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n");
  210. #endif
  211. #ifndef OPENSSL_NO_AES
  212. BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
  213. BIO_printf(bio_err," encrypt PEM output with cbc aes\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 RSA key modulus\n");
  218. BIO_printf(bio_err," -check verify key consistency\n");
  219. BIO_printf(bio_err," -pubin expect a public key in input file\n");
  220. BIO_printf(bio_err," -pubout output a public key\n");
  221. #ifndef OPENSSL_NO_ENGINE
  222. BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
  223. #endif
  224. goto end;
  225. }
  226. ERR_load_crypto_strings();
  227. #ifndef OPENSSL_NO_ENGINE
  228. e = setup_engine(bio_err, engine, 0);
  229. #endif
  230. if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
  231. BIO_printf(bio_err, "Error getting passwords\n");
  232. goto end;
  233. }
  234. if(check && pubin) {
  235. BIO_printf(bio_err, "Only private keys can be checked\n");
  236. goto end;
  237. }
  238. out=BIO_new(BIO_s_file());
  239. {
  240. EVP_PKEY *pkey;
  241. if (pubin)
  242. {
  243. int tmpformat=-1;
  244. if (pubin == 2)
  245. {
  246. if (informat == FORMAT_PEM)
  247. tmpformat = FORMAT_PEMRSA;
  248. else if (informat == FORMAT_ASN1)
  249. tmpformat = FORMAT_ASN1RSA;
  250. }
  251. else if (informat == FORMAT_NETSCAPE && sgckey)
  252. tmpformat = FORMAT_IISSGC;
  253. else
  254. tmpformat = informat;
  255. pkey = load_pubkey(bio_err, infile, tmpformat, 1,
  256. passin, e, "Public Key");
  257. }
  258. else
  259. pkey = load_key(bio_err, infile,
  260. (informat == FORMAT_NETSCAPE && sgckey ?
  261. FORMAT_IISSGC : informat), 1,
  262. passin, e, "Private Key");
  263. if (pkey != NULL)
  264. rsa = EVP_PKEY_get1_RSA(pkey);
  265. EVP_PKEY_free(pkey);
  266. }
  267. if (rsa == NULL)
  268. {
  269. ERR_print_errors(bio_err);
  270. goto end;
  271. }
  272. if (outfile == NULL)
  273. {
  274. BIO_set_fp(out,stdout,BIO_NOCLOSE);
  275. #ifdef OPENSSL_SYS_VMS
  276. {
  277. BIO *tmpbio = BIO_new(BIO_f_linebuffer());
  278. out = BIO_push(tmpbio, out);
  279. }
  280. #endif
  281. }
  282. else
  283. {
  284. if (BIO_write_filename(out,outfile) <= 0)
  285. {
  286. perror(outfile);
  287. goto end;
  288. }
  289. }
  290. if (text)
  291. if (!RSA_print(out,rsa,0))
  292. {
  293. perror(outfile);
  294. ERR_print_errors(bio_err);
  295. goto end;
  296. }
  297. if (modulus)
  298. {
  299. BIO_printf(out,"Modulus=");
  300. BN_print(out,rsa->n);
  301. BIO_printf(out,"\n");
  302. }
  303. if (check)
  304. {
  305. int r = RSA_check_key(rsa);
  306. if (r == 1)
  307. BIO_printf(out,"RSA key ok\n");
  308. else if (r == 0)
  309. {
  310. unsigned long err;
  311. while ((err = ERR_peek_error()) != 0 &&
  312. ERR_GET_LIB(err) == ERR_LIB_RSA &&
  313. ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
  314. ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)
  315. {
  316. BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));
  317. ERR_get_error(); /* remove e from error stack */
  318. }
  319. }
  320. if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
  321. {
  322. ERR_print_errors(bio_err);
  323. goto end;
  324. }
  325. }
  326. if (noout)
  327. {
  328. ret = 0;
  329. goto end;
  330. }
  331. BIO_printf(bio_err,"writing RSA key\n");
  332. if (outformat == FORMAT_ASN1) {
  333. if(pubout || pubin)
  334. {
  335. if (pubout == 2)
  336. i=i2d_RSAPublicKey_bio(out,rsa);
  337. else
  338. i=i2d_RSA_PUBKEY_bio(out,rsa);
  339. }
  340. else i=i2d_RSAPrivateKey_bio(out,rsa);
  341. }
  342. #ifndef OPENSSL_NO_RC4
  343. else if (outformat == FORMAT_NETSCAPE)
  344. {
  345. unsigned char *p,*pp;
  346. int size;
  347. i=1;
  348. size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);
  349. if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)
  350. {
  351. BIO_printf(bio_err,"Memory allocation failure\n");
  352. goto end;
  353. }
  354. pp=p;
  355. i2d_RSA_NET(rsa,&p,NULL, sgckey);
  356. BIO_write(out,(char *)pp,size);
  357. OPENSSL_free(pp);
  358. }
  359. #endif
  360. else if (outformat == FORMAT_PEM) {
  361. if(pubout || pubin)
  362. {
  363. if (pubout == 2)
  364. i=PEM_write_bio_RSAPublicKey(out,rsa);
  365. else
  366. i=PEM_write_bio_RSA_PUBKEY(out,rsa);
  367. }
  368. else i=PEM_write_bio_RSAPrivateKey(out,rsa,
  369. enc,NULL,0,NULL,passout);
  370. } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
  371. EVP_PKEY *pk;
  372. pk = EVP_PKEY_new();
  373. EVP_PKEY_set1_RSA(pk, rsa);
  374. if (outformat == FORMAT_PVK)
  375. i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
  376. else if (pubin || pubout)
  377. i = i2b_PublicKey_bio(out, pk);
  378. else
  379. i = i2b_PrivateKey_bio(out, pk);
  380. EVP_PKEY_free(pk);
  381. } else {
  382. BIO_printf(bio_err,"bad output format specified for outfile\n");
  383. goto end;
  384. }
  385. if (!i)
  386. {
  387. BIO_printf(bio_err,"unable to write key\n");
  388. ERR_print_errors(bio_err);
  389. }
  390. else
  391. ret=0;
  392. end:
  393. if(out != NULL) BIO_free_all(out);
  394. if(rsa != NULL) RSA_free(rsa);
  395. if(passin) OPENSSL_free(passin);
  396. if(passout) OPENSSL_free(passout);
  397. apps_shutdown();
  398. OPENSSL_EXIT(ret);
  399. }
  400. #else /* !OPENSSL_NO_RSA */
  401. # if PEDANTIC
  402. static void *dummy=&dummy;
  403. # endif
  404. #endif