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. * -seed - 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. * -text - print a text version
  89. * -modulus - print the RSA key modulus
  90. * -check - verify key consistency
  91. * -pubin - Expect a public key in input file.
  92. * -pubout - Output a public key.
  93. */
  94. int MAIN(int, char **);
  95. int MAIN(int argc, char **argv)
  96. {
  97. ENGINE *e = NULL;
  98. int ret=1;
  99. RSA *rsa=NULL;
  100. int i,badops=0, sgckey=0;
  101. const EVP_CIPHER *enc=NULL;
  102. BIO *out=NULL;
  103. int informat,outformat,text=0,check=0,noout=0;
  104. int pubin = 0, pubout = 0;
  105. char *infile,*outfile,*prog;
  106. char *passargin = NULL, *passargout = NULL;
  107. char *passin = NULL, *passout = NULL;
  108. #ifndef OPENSSL_NO_ENGINE
  109. char *engine=NULL;
  110. #endif
  111. int modulus=0;
  112. int pvk_encr = 2;
  113. apps_startup();
  114. if (bio_err == NULL)
  115. if ((bio_err=BIO_new(BIO_s_file())) != NULL)
  116. BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
  117. if (!load_config(bio_err, NULL))
  118. goto end;
  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,"-sgckey") == 0)
  166. sgckey=1;
  167. else if (strcmp(*argv,"-pubin") == 0)
  168. pubin=1;
  169. else if (strcmp(*argv,"-pubout") == 0)
  170. pubout=1;
  171. else if (strcmp(*argv,"-RSAPublicKey_in") == 0)
  172. pubin = 2;
  173. else if (strcmp(*argv,"-RSAPublicKey_out") == 0)
  174. pubout = 2;
  175. else if (strcmp(*argv,"-pvk-strong") == 0)
  176. pvk_encr=2;
  177. else if (strcmp(*argv,"-pvk-weak") == 0)
  178. pvk_encr=1;
  179. else if (strcmp(*argv,"-pvk-none") == 0)
  180. pvk_encr=0;
  181. else if (strcmp(*argv,"-noout") == 0)
  182. noout=1;
  183. else if (strcmp(*argv,"-text") == 0)
  184. text=1;
  185. else if (strcmp(*argv,"-modulus") == 0)
  186. modulus=1;
  187. else if (strcmp(*argv,"-check") == 0)
  188. check=1;
  189. else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
  190. {
  191. BIO_printf(bio_err,"unknown option %s\n",*argv);
  192. badops=1;
  193. break;
  194. }
  195. argc--;
  196. argv++;
  197. }
  198. if (badops)
  199. {
  200. bad:
  201. BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
  202. BIO_printf(bio_err,"where options are\n");
  203. BIO_printf(bio_err," -inform arg input format - one of DER NET PEM\n");
  204. BIO_printf(bio_err," -outform arg output format - one of DER NET PEM\n");
  205. BIO_printf(bio_err," -in arg input file\n");
  206. BIO_printf(bio_err," -sgckey Use IIS SGC key format\n");
  207. BIO_printf(bio_err," -passin arg input file pass phrase source\n");
  208. BIO_printf(bio_err," -out arg output file\n");
  209. BIO_printf(bio_err," -passout arg output file pass phrase source\n");
  210. BIO_printf(bio_err," -des encrypt PEM output with cbc des\n");
  211. BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
  212. #ifndef OPENSSL_NO_IDEA
  213. BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n");
  214. #endif
  215. #ifndef OPENSSL_NO_SEED
  216. BIO_printf(bio_err," -seed encrypt PEM output with cbc seed\n");
  217. #endif
  218. #ifndef OPENSSL_NO_AES
  219. BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
  220. BIO_printf(bio_err," encrypt PEM output with cbc aes\n");
  221. #endif
  222. #ifndef OPENSSL_NO_CAMELLIA
  223. BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
  224. BIO_printf(bio_err," encrypt PEM output with cbc camellia\n");
  225. #endif
  226. BIO_printf(bio_err," -text print the key in text\n");
  227. BIO_printf(bio_err," -noout don't print key out\n");
  228. BIO_printf(bio_err," -modulus print the RSA key modulus\n");
  229. BIO_printf(bio_err," -check verify key consistency\n");
  230. BIO_printf(bio_err," -pubin expect a public key in input file\n");
  231. BIO_printf(bio_err," -pubout output a public key\n");
  232. #ifndef OPENSSL_NO_ENGINE
  233. BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
  234. #endif
  235. goto end;
  236. }
  237. ERR_load_crypto_strings();
  238. #ifndef OPENSSL_NO_ENGINE
  239. e = setup_engine(bio_err, engine, 0);
  240. #endif
  241. if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
  242. BIO_printf(bio_err, "Error getting passwords\n");
  243. goto end;
  244. }
  245. if(check && pubin) {
  246. BIO_printf(bio_err, "Only private keys can be checked\n");
  247. goto end;
  248. }
  249. out=BIO_new(BIO_s_file());
  250. {
  251. EVP_PKEY *pkey;
  252. if (pubin)
  253. {
  254. int tmpformat=-1;
  255. if (pubin == 2)
  256. {
  257. if (informat == FORMAT_PEM)
  258. tmpformat = FORMAT_PEMRSA;
  259. else if (informat == FORMAT_ASN1)
  260. tmpformat = FORMAT_ASN1RSA;
  261. }
  262. else if (informat == FORMAT_NETSCAPE && sgckey)
  263. tmpformat = FORMAT_IISSGC;
  264. else
  265. tmpformat = informat;
  266. pkey = load_pubkey(bio_err, infile, tmpformat, 1,
  267. passin, e, "Public Key");
  268. }
  269. else
  270. pkey = load_key(bio_err, infile,
  271. (informat == FORMAT_NETSCAPE && sgckey ?
  272. FORMAT_IISSGC : informat), 1,
  273. passin, e, "Private Key");
  274. if (pkey != NULL)
  275. rsa = EVP_PKEY_get1_RSA(pkey);
  276. EVP_PKEY_free(pkey);
  277. }
  278. if (rsa == NULL)
  279. {
  280. ERR_print_errors(bio_err);
  281. goto end;
  282. }
  283. if (outfile == NULL)
  284. {
  285. BIO_set_fp(out,stdout,BIO_NOCLOSE);
  286. #ifdef OPENSSL_SYS_VMS
  287. {
  288. BIO *tmpbio = BIO_new(BIO_f_linebuffer());
  289. out = BIO_push(tmpbio, out);
  290. }
  291. #endif
  292. }
  293. else
  294. {
  295. if (BIO_write_filename(out,outfile) <= 0)
  296. {
  297. perror(outfile);
  298. goto end;
  299. }
  300. }
  301. if (text)
  302. if (!RSA_print(out,rsa,0))
  303. {
  304. perror(outfile);
  305. ERR_print_errors(bio_err);
  306. goto end;
  307. }
  308. if (modulus)
  309. {
  310. BIO_printf(out,"Modulus=");
  311. BN_print(out,rsa->n);
  312. BIO_printf(out,"\n");
  313. }
  314. if (check)
  315. {
  316. int r = RSA_check_key(rsa);
  317. if (r == 1)
  318. BIO_printf(out,"RSA key ok\n");
  319. else if (r == 0)
  320. {
  321. unsigned long err;
  322. while ((err = ERR_peek_error()) != 0 &&
  323. ERR_GET_LIB(err) == ERR_LIB_RSA &&
  324. ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
  325. ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)
  326. {
  327. BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));
  328. ERR_get_error(); /* remove e from error stack */
  329. }
  330. }
  331. if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
  332. {
  333. ERR_print_errors(bio_err);
  334. goto end;
  335. }
  336. }
  337. if (noout)
  338. {
  339. ret = 0;
  340. goto end;
  341. }
  342. BIO_printf(bio_err,"writing RSA key\n");
  343. if (outformat == FORMAT_ASN1) {
  344. if(pubout || pubin)
  345. {
  346. if (pubout == 2)
  347. i=i2d_RSAPublicKey_bio(out,rsa);
  348. else
  349. i=i2d_RSA_PUBKEY_bio(out,rsa);
  350. }
  351. else i=i2d_RSAPrivateKey_bio(out,rsa);
  352. }
  353. #ifndef OPENSSL_NO_RC4
  354. else if (outformat == FORMAT_NETSCAPE)
  355. {
  356. unsigned char *p,*pp;
  357. int size;
  358. i=1;
  359. size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);
  360. if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)
  361. {
  362. BIO_printf(bio_err,"Memory allocation failure\n");
  363. goto end;
  364. }
  365. pp=p;
  366. i2d_RSA_NET(rsa,&p,NULL, sgckey);
  367. BIO_write(out,(char *)pp,size);
  368. OPENSSL_free(pp);
  369. }
  370. #endif
  371. else if (outformat == FORMAT_PEM) {
  372. if(pubout || pubin)
  373. {
  374. if (pubout == 2)
  375. i=PEM_write_bio_RSAPublicKey(out,rsa);
  376. else
  377. i=PEM_write_bio_RSA_PUBKEY(out,rsa);
  378. }
  379. else i=PEM_write_bio_RSAPrivateKey(out,rsa,
  380. enc,NULL,0,NULL,passout);
  381. #ifndef OPENSSL_NO_DSA
  382. } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
  383. EVP_PKEY *pk;
  384. pk = EVP_PKEY_new();
  385. EVP_PKEY_set1_RSA(pk, rsa);
  386. if (outformat == FORMAT_PVK)
  387. i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
  388. else if (pubin || pubout)
  389. i = i2b_PublicKey_bio(out, pk);
  390. else
  391. i = i2b_PrivateKey_bio(out, pk);
  392. EVP_PKEY_free(pk);
  393. #endif
  394. } else {
  395. BIO_printf(bio_err,"bad output format specified for outfile\n");
  396. goto end;
  397. }
  398. if (!i)
  399. {
  400. BIO_printf(bio_err,"unable to write key\n");
  401. ERR_print_errors(bio_err);
  402. }
  403. else
  404. ret=0;
  405. end:
  406. if(out != NULL) BIO_free_all(out);
  407. if(rsa != NULL) RSA_free(rsa);
  408. if(passin) OPENSSL_free(passin);
  409. if(passout) OPENSSL_free(passout);
  410. apps_shutdown();
  411. OPENSSL_EXIT(ret);
  412. }
  413. #else /* !OPENSSL_NO_RSA */
  414. # if PEDANTIC
  415. static void *dummy=&dummy;
  416. # endif
  417. #endif