rsa.c revision 296465 
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
59#include <openssl/opensslconf.h>
60#ifndef OPENSSL_NO_RSA
61# include <stdio.h>
62# include <stdlib.h>
63# include <string.h>
64# include <time.h>
65# include "apps.h"
66# include <openssl/bio.h>
67# include <openssl/err.h>
68# include <openssl/rsa.h>
69# include <openssl/evp.h>
70# include <openssl/x509.h>
71# include <openssl/pem.h>
72# include <openssl/bn.h>
73
74# undef PROG
75# define PROG    rsa_main
76
77/*-
78 * -inform arg  - input format - default PEM (one of DER, NET or PEM)
79 * -outform arg - output format - default PEM
80 * -in arg      - input file - default stdin
81 * -out arg     - output file - default stdout
82 * -des         - encrypt output if PEM format with DES in cbc mode
83 * -des3        - encrypt output if PEM format
84 * -idea        - encrypt output if PEM format
85 * -seed        - encrypt output if PEM format
86 * -aes128      - encrypt output if PEM format
87 * -aes192      - encrypt output if PEM format
88 * -aes256      - encrypt output if PEM format
89 * -camellia128 - encrypt output if PEM format
90 * -camellia192 - encrypt output if PEM format
91 * -camellia256 - encrypt output if PEM format
92 * -text        - print a text version
93 * -modulus     - print the RSA key modulus
94 * -check       - verify key consistency
95 * -pubin       - Expect a public key in input file.
96 * -pubout      - Output a public key.
97 */
98
99int MAIN(int, char **);
100
101int MAIN(int argc, char **argv)
102{
103    ENGINE *e = NULL;
104    int ret = 1;
105    RSA *rsa = NULL;
106    int i, badops = 0, sgckey = 0;
107    const EVP_CIPHER *enc = NULL;
108    BIO *out = NULL;
109    int informat, outformat, text = 0, check = 0, noout = 0;
110    int pubin = 0, pubout = 0;
111    char *infile, *outfile, *prog;
112    char *passargin = NULL, *passargout = NULL;
113    char *passin = NULL, *passout = NULL;
114# ifndef OPENSSL_NO_ENGINE
115    char *engine = NULL;
116# endif
117    int modulus = 0;
118
119    apps_startup();
120
121    if (bio_err == NULL)
122        if ((bio_err = BIO_new(BIO_s_file())) != NULL)
123            BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
124
125    if (!load_config(bio_err, NULL))
126        goto end;
127
128    infile = NULL;
129    outfile = NULL;
130    informat = FORMAT_PEM;
131    outformat = FORMAT_PEM;
132
133    prog = argv[0];
134    argc--;
135    argv++;
136    while (argc >= 1) {
137        if (strcmp(*argv, "-inform") == 0) {
138            if (--argc < 1)
139                goto bad;
140            informat = str2fmt(*(++argv));
141        } else if (strcmp(*argv, "-outform") == 0) {
142            if (--argc < 1)
143                goto bad;
144            outformat = str2fmt(*(++argv));
145        } else if (strcmp(*argv, "-in") == 0) {
146            if (--argc < 1)
147                goto bad;
148            infile = *(++argv);
149        } else if (strcmp(*argv, "-out") == 0) {
150            if (--argc < 1)
151                goto bad;
152            outfile = *(++argv);
153        } else if (strcmp(*argv, "-passin") == 0) {
154            if (--argc < 1)
155                goto bad;
156            passargin = *(++argv);
157        } else if (strcmp(*argv, "-passout") == 0) {
158            if (--argc < 1)
159                goto bad;
160            passargout = *(++argv);
161        }
162# ifndef OPENSSL_NO_ENGINE
163        else if (strcmp(*argv, "-engine") == 0) {
164            if (--argc < 1)
165                goto bad;
166            engine = *(++argv);
167        }
168# endif
169        else if (strcmp(*argv, "-sgckey") == 0)
170            sgckey = 1;
171        else if (strcmp(*argv, "-pubin") == 0)
172            pubin = 1;
173        else if (strcmp(*argv, "-pubout") == 0)
174            pubout = 1;
175        else if (strcmp(*argv, "-noout") == 0)
176            noout = 1;
177        else if (strcmp(*argv, "-text") == 0)
178            text = 1;
179        else if (strcmp(*argv, "-modulus") == 0)
180            modulus = 1;
181        else if (strcmp(*argv, "-check") == 0)
182            check = 1;
183        else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) {
184            BIO_printf(bio_err, "unknown option %s\n", *argv);
185            badops = 1;
186            break;
187        }
188        argc--;
189        argv++;
190    }
191
192    if (badops) {
193 bad:
194        BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
195        BIO_printf(bio_err, "where options are\n");
196        BIO_printf(bio_err,
197                   " -inform arg     input format - one of DER NET PEM\n");
198        BIO_printf(bio_err,
199                   " -outform arg    output format - one of DER NET PEM\n");
200        BIO_printf(bio_err, " -in arg         input file\n");
201        BIO_printf(bio_err, " -sgckey         Use IIS SGC key format\n");
202        BIO_printf(bio_err,
203                   " -passin arg     input file pass phrase source\n");
204        BIO_printf(bio_err, " -out arg        output file\n");
205        BIO_printf(bio_err,
206                   " -passout arg    output file pass phrase source\n");
207        BIO_printf(bio_err,
208                   " -des            encrypt PEM output with cbc des\n");
209        BIO_printf(bio_err,
210                   " -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
211# ifndef OPENSSL_NO_IDEA
212        BIO_printf(bio_err,
213                   " -idea           encrypt PEM output with cbc idea\n");
214# endif
215# ifndef OPENSSL_NO_SEED
216        BIO_printf(bio_err,
217                   " -seed           encrypt PEM output with cbc seed\n");
218# endif
219# ifndef OPENSSL_NO_AES
220        BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
221        BIO_printf(bio_err,
222                   "                 encrypt PEM output with cbc aes\n");
223# endif
224# ifndef OPENSSL_NO_CAMELLIA
225        BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
226        BIO_printf(bio_err,
227                   "                 encrypt PEM output with cbc camellia\n");
228# endif
229        BIO_printf(bio_err, " -text           print the key in text\n");
230        BIO_printf(bio_err, " -noout          don't print key out\n");
231        BIO_printf(bio_err, " -modulus        print the RSA key modulus\n");
232        BIO_printf(bio_err, " -check          verify key consistency\n");
233        BIO_printf(bio_err,
234                   " -pubin          expect a public key in input file\n");
235        BIO_printf(bio_err, " -pubout         output a public key\n");
236# ifndef OPENSSL_NO_ENGINE
237        BIO_printf(bio_err,
238                   " -engine e       use engine e, possibly a hardware device.\n");
239# endif
240        goto end;
241    }
242
243    ERR_load_crypto_strings();
244
245# ifndef OPENSSL_NO_ENGINE
246    e = setup_engine(bio_err, engine, 0);
247# endif
248
249    if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
250        BIO_printf(bio_err, "Error getting passwords\n");
251        goto end;
252    }
253
254    if (check && pubin) {
255        BIO_printf(bio_err, "Only private keys can be checked\n");
256        goto end;
257    }
258
259    out = BIO_new(BIO_s_file());
260
261    {
262        EVP_PKEY *pkey;
263
264        if (pubin)
265            pkey = load_pubkey(bio_err, infile,
266                               (informat == FORMAT_NETSCAPE && sgckey ?
267                                FORMAT_IISSGC : informat), 1,
268                               passin, e, "Public Key");
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
275        if (pkey != NULL)
276            rsa = pkey == NULL ? NULL : EVP_PKEY_get1_RSA(pkey);
277        EVP_PKEY_free(pkey);
278    }
279
280    if (rsa == NULL) {
281        ERR_print_errors(bio_err);
282        goto end;
283    }
284
285    if (outfile == NULL) {
286        BIO_set_fp(out, stdout, BIO_NOCLOSE);
287# ifdef OPENSSL_SYS_VMS
288        {
289            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
290            out = BIO_push(tmpbio, out);
291        }
292# endif
293    } else {
294        if (BIO_write_filename(out, outfile) <= 0) {
295            perror(outfile);
296            goto end;
297        }
298    }
299
300    if (text)
301        if (!RSA_print(out, rsa, 0)) {
302            perror(outfile);
303            ERR_print_errors(bio_err);
304            goto end;
305        }
306
307    if (modulus) {
308        BIO_printf(out, "Modulus=");
309        BN_print(out, rsa->n);
310        BIO_printf(out, "\n");
311    }
312
313    if (check) {
314        int r = RSA_check_key(rsa);
315
316        if (r == 1)
317            BIO_printf(out, "RSA key ok\n");
318        else if (r == 0) {
319            unsigned long err;
320
321            while ((err = ERR_peek_error()) != 0 &&
322                   ERR_GET_LIB(err) == ERR_LIB_RSA &&
323                   ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
324                   ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) {
325                BIO_printf(out, "RSA key error: %s\n",
326                           ERR_reason_error_string(err));
327                ERR_get_error(); /* remove e from error stack */
328            }
329        }
330
331        if (r == -1 || ERR_peek_error() != 0) { /* should happen only if r ==
332                                                 * -1 */
333            ERR_print_errors(bio_err);
334            goto end;
335        }
336    }
337
338    if (noout) {
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            i = i2d_RSA_PUBKEY_bio(out, rsa);
346        else
347            i = i2d_RSAPrivateKey_bio(out, rsa);
348    }
349# ifndef OPENSSL_NO_RC4
350    else if (outformat == FORMAT_NETSCAPE) {
351        unsigned char *p, *pp;
352        int size;
353
354        i = 1;
355        size = i2d_RSA_NET(rsa, NULL, NULL, sgckey);
356        if ((p = (unsigned char *)OPENSSL_malloc(size)) == NULL) {
357            BIO_printf(bio_err, "Memory allocation failure\n");
358            goto end;
359        }
360        pp = p;
361        i2d_RSA_NET(rsa, &p, NULL, sgckey);
362        BIO_write(out, (char *)pp, size);
363        OPENSSL_free(pp);
364    }
365# endif
366    else if (outformat == FORMAT_PEM) {
367        if (pubout || pubin)
368            i = PEM_write_bio_RSA_PUBKEY(out, rsa);
369        else
370            i = PEM_write_bio_RSAPrivateKey(out, rsa,
371                                            enc, NULL, 0, NULL, passout);
372    } else {
373        BIO_printf(bio_err, "bad output format specified for outfile\n");
374        goto end;
375    }
376    if (!i) {
377        BIO_printf(bio_err, "unable to write key\n");
378        ERR_print_errors(bio_err);
379    } else
380        ret = 0;
381 end:
382    if (out != NULL)
383        BIO_free_all(out);
384    if (rsa != NULL)
385        RSA_free(rsa);
386    if (passin)
387        OPENSSL_free(passin);
388    if (passout)
389        OPENSSL_free(passout);
390    apps_shutdown();
391    OPENSSL_EXIT(ret);
392}
393#else                           /* !OPENSSL_NO_RSA */
394
395# if PEDANTIC
396static void *dummy = &dummy;
397# endif
398
399#endif
400