Annotation of src/usr.bin/openssl/rsa.c, Revision 1.6
1.6 ! doug 1: /* $OpenBSD: rsa.c,v 1.5 2015/09/11 14:30:23 bcook Exp $ */
1.1 jsing 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:
61: #include <stdio.h>
62: #include <stdlib.h>
63: #include <string.h>
64: #include <time.h>
65:
66: #include "apps.h"
1.4 deraadt 67: #include "progs.h"
1.1 jsing 68:
69: #include <openssl/bio.h>
70: #include <openssl/bn.h>
71: #include <openssl/err.h>
72: #include <openssl/evp.h>
73: #include <openssl/pem.h>
74: #include <openssl/rsa.h>
75: #include <openssl/x509.h>
76:
1.3 doug 77: static struct {
78: int check;
79: const EVP_CIPHER *enc;
80: char *infile;
81: int informat;
82: int modulus;
83: int noout;
84: char *outfile;
85: int outformat;
86: char *passargin;
87: char *passargout;
88: int pubin;
89: int pubout;
90: int pvk_encr;
91: int sgckey;
92: int text;
93: } rsa_config;
94:
95: static int
96: rsa_opt_cipher(int argc, char **argv, int *argsused)
97: {
98: char *name = argv[0];
99:
100: if (*name++ != '-')
101: return (1);
102:
103: if ((rsa_config.enc = EVP_get_cipherbyname(name)) == NULL) {
104: fprintf(stderr, "Invalid cipher '%s'\n", name);
105: return (1);
106: }
107:
108: *argsused = 1;
109: return (0);
110: }
111:
112: static struct option rsa_options[] = {
113: {
114: .name = "check",
115: .desc = "Check consistency of RSA private key",
116: .type = OPTION_FLAG,
117: .opt.flag = &rsa_config.check,
118: },
119: {
120: .name = "in",
121: .argname = "file",
122: .desc = "Input file (default stdin)",
123: .type = OPTION_ARG,
124: .opt.arg = &rsa_config.infile,
125: },
126: {
127: .name = "inform",
128: .argname = "format",
129: .desc = "Input format (DER, NET or PEM (default))",
130: .type = OPTION_ARG_FORMAT,
131: .opt.value = &rsa_config.informat,
132: },
133: {
134: .name = "modulus",
135: .desc = "Print the RSA key modulus",
136: .type = OPTION_FLAG,
137: .opt.flag = &rsa_config.modulus,
138: },
139: {
140: .name = "noout",
141: .desc = "Do not print encoded version of the key",
142: .type = OPTION_FLAG,
143: .opt.flag = &rsa_config.noout,
144: },
145: {
146: .name = "out",
147: .argname = "file",
148: .desc = "Output file (default stdout)",
149: .type = OPTION_ARG,
150: .opt.arg = &rsa_config.outfile,
151: },
152: {
153: .name = "outform",
154: .argname = "format",
155: .desc = "Output format (DER, NET or PEM (default PEM))",
156: .type = OPTION_ARG_FORMAT,
157: .opt.value = &rsa_config.outformat,
158: },
159: {
160: .name = "passin",
161: .argname = "src",
162: .desc = "Input file passphrase source",
163: .type = OPTION_ARG,
164: .opt.arg = &rsa_config.passargin,
165: },
166: {
167: .name = "passout",
168: .argname = "src",
169: .desc = "Output file passphrase source",
170: .type = OPTION_ARG,
171: .opt.arg = &rsa_config.passargout,
172: },
173: {
174: .name = "pubin",
175: .desc = "Expect a public key (default private key)",
176: .type = OPTION_VALUE,
177: .value = 1,
178: .opt.value = &rsa_config.pubin,
179: },
180: {
181: .name = "pubout",
182: .desc = "Output a public key (default private key)",
183: .type = OPTION_VALUE,
184: .value = 1,
185: .opt.value = &rsa_config.pubout,
186: },
187: {
188: .name = "pvk-none",
189: .type = OPTION_VALUE,
190: .value = 0,
191: .opt.value = &rsa_config.pvk_encr,
192: },
193: {
194: .name = "pvk-strong",
195: .type = OPTION_VALUE,
196: .value = 2,
197: .opt.value = &rsa_config.pvk_encr,
198: },
199: {
200: .name = "pvk-weak",
201: .type = OPTION_VALUE,
202: .value = 1,
203: .opt.value = &rsa_config.pvk_encr,
204: },
205: {
206: .name = "RSAPublicKey_in",
207: .type = OPTION_VALUE,
208: .value = 2,
209: .opt.value = &rsa_config.pubin,
210: },
211: {
212: .name = "RSAPublicKey_out",
213: .type = OPTION_VALUE,
214: .value = 2,
215: .opt.value = &rsa_config.pubout,
216: },
217: {
218: .name = "sgckey",
219: .desc = "Use modified NET algorithm for IIS and SGC keys",
220: .type = OPTION_FLAG,
221: .opt.flag = &rsa_config.sgckey,
222: },
223: {
224: .name = "text",
225: .desc = "Print in plain text in addition to encoded",
226: .type = OPTION_FLAG,
227: .opt.flag = &rsa_config.text,
228: },
229: {
230: .name = NULL,
231: .type = OPTION_ARGV_FUNC,
232: .opt.argvfunc = rsa_opt_cipher,
233: },
234: { NULL }
235: };
236:
237: static void
238: show_ciphers(const OBJ_NAME *name, void *arg)
239: {
240: static int n;
241:
242: fprintf(stderr, " -%-24s%s", name->name, (++n % 3 ? "" : "\n"));
243: }
1.1 jsing 244:
1.3 doug 245: static void
246: rsa_usage()
247: {
248: fprintf(stderr,
1.5 bcook 249: "usage: rsa [-ciphername] [-check] [-in file] "
1.3 doug 250: "[-inform fmt]\n"
251: " [-modulus] [-noout] [-out file] [-outform fmt] "
252: "[-passin src]\n"
253: " [-passout src] [-pubin] [-pubout] [-sgckey] [-text]\n\n");
254: options_usage(rsa_options);
255: fprintf(stderr, "\n");
256:
257: fprintf(stderr, "Valid ciphername values:\n\n");
258: OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, show_ciphers, NULL);
259: fprintf(stderr, "\n");
260: }
1.1 jsing 261:
262: int
263: rsa_main(int argc, char **argv)
264: {
265: int ret = 1;
266: RSA *rsa = NULL;
1.3 doug 267: int i;
1.1 jsing 268: BIO *out = NULL;
269: char *passin = NULL, *passout = NULL;
1.6 ! doug 270:
! 271: if (single_execution) {
! 272: if (pledge("stdio rpath wpath cpath", NULL) == -1)
! 273: perror("pledge");
! 274: }
1.1 jsing 275:
1.3 doug 276: memset(&rsa_config, 0, sizeof(rsa_config));
277: rsa_config.pvk_encr = 2;
278: rsa_config.informat = FORMAT_PEM;
279: rsa_config.outformat = FORMAT_PEM;
1.1 jsing 280:
1.3 doug 281: if (options_parse(argc, argv, rsa_options, NULL, NULL) != 0) {
282: rsa_usage();
1.1 jsing 283: goto end;
284: }
285:
1.3 doug 286: if (!app_passwd(bio_err, rsa_config.passargin, rsa_config.passargout,
287: &passin, &passout)) {
1.1 jsing 288: BIO_printf(bio_err, "Error getting passwords\n");
289: goto end;
290: }
1.3 doug 291: if (rsa_config.check && rsa_config.pubin) {
1.1 jsing 292: BIO_printf(bio_err, "Only private keys can be checked\n");
293: goto end;
294: }
295: out = BIO_new(BIO_s_file());
296:
297: {
298: EVP_PKEY *pkey;
299:
1.3 doug 300: if (rsa_config.pubin) {
1.1 jsing 301: int tmpformat = -1;
1.3 doug 302: if (rsa_config.pubin == 2) {
303: if (rsa_config.informat == FORMAT_PEM)
1.1 jsing 304: tmpformat = FORMAT_PEMRSA;
1.3 doug 305: else if (rsa_config.informat == FORMAT_ASN1)
1.1 jsing 306: tmpformat = FORMAT_ASN1RSA;
1.3 doug 307: } else if (rsa_config.informat == FORMAT_NETSCAPE &&
308: rsa_config.sgckey)
1.1 jsing 309: tmpformat = FORMAT_IISSGC;
310: else
1.3 doug 311: tmpformat = rsa_config.informat;
1.1 jsing 312:
1.3 doug 313: pkey = load_pubkey(bio_err, rsa_config.infile,
1.5 bcook 314: tmpformat, 1, passin, "Public Key");
1.1 jsing 315: } else
1.3 doug 316: pkey = load_key(bio_err, rsa_config.infile,
317: (rsa_config.informat == FORMAT_NETSCAPE &&
318: rsa_config.sgckey ? FORMAT_IISSGC :
1.5 bcook 319: rsa_config.informat), 1, passin, "Private Key");
1.1 jsing 320:
321: if (pkey != NULL)
322: rsa = EVP_PKEY_get1_RSA(pkey);
323: EVP_PKEY_free(pkey);
324: }
325:
326: if (rsa == NULL) {
327: ERR_print_errors(bio_err);
328: goto end;
329: }
1.3 doug 330: if (rsa_config.outfile == NULL) {
1.1 jsing 331: BIO_set_fp(out, stdout, BIO_NOCLOSE);
332: } else {
1.3 doug 333: if (BIO_write_filename(out, rsa_config.outfile) <= 0) {
334: perror(rsa_config.outfile);
1.1 jsing 335: goto end;
336: }
337: }
338:
1.3 doug 339: if (rsa_config.text)
1.1 jsing 340: if (!RSA_print(out, rsa, 0)) {
1.3 doug 341: perror(rsa_config.outfile);
1.1 jsing 342: ERR_print_errors(bio_err);
343: goto end;
344: }
1.3 doug 345: if (rsa_config.modulus) {
1.1 jsing 346: BIO_printf(out, "Modulus=");
347: BN_print(out, rsa->n);
348: BIO_printf(out, "\n");
349: }
1.3 doug 350: if (rsa_config.check) {
1.1 jsing 351: int r = RSA_check_key(rsa);
352:
353: if (r == 1)
354: BIO_printf(out, "RSA key ok\n");
355: else if (r == 0) {
356: unsigned long err;
357:
358: while ((err = ERR_peek_error()) != 0 &&
359: ERR_GET_LIB(err) == ERR_LIB_RSA &&
360: ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
361: ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) {
1.3 doug 362: BIO_printf(out, "RSA key error: %s\n",
363: ERR_reason_error_string(err));
1.1 jsing 364: ERR_get_error(); /* remove e from error
365: * stack */
366: }
367: }
368: if (r == -1 || ERR_peek_error() != 0) { /* should happen only if
369: * r == -1 */
370: ERR_print_errors(bio_err);
371: goto end;
372: }
373: }
1.3 doug 374: if (rsa_config.noout) {
1.1 jsing 375: ret = 0;
376: goto end;
377: }
378: BIO_printf(bio_err, "writing RSA key\n");
1.3 doug 379: if (rsa_config.outformat == FORMAT_ASN1) {
380: if (rsa_config.pubout || rsa_config.pubin) {
381: if (rsa_config.pubout == 2)
1.1 jsing 382: i = i2d_RSAPublicKey_bio(out, rsa);
383: else
384: i = i2d_RSA_PUBKEY_bio(out, rsa);
385: } else
386: i = i2d_RSAPrivateKey_bio(out, rsa);
387: }
388: #ifndef OPENSSL_NO_RC4
1.3 doug 389: else if (rsa_config.outformat == FORMAT_NETSCAPE) {
1.1 jsing 390: unsigned char *p, *pp;
391: int size;
392:
393: i = 1;
1.3 doug 394: size = i2d_RSA_NET(rsa, NULL, NULL, rsa_config.sgckey);
1.1 jsing 395: if ((p = malloc(size)) == NULL) {
396: BIO_printf(bio_err, "Memory allocation failure\n");
397: goto end;
398: }
399: pp = p;
1.3 doug 400: i2d_RSA_NET(rsa, &p, NULL, rsa_config.sgckey);
1.1 jsing 401: BIO_write(out, (char *) pp, size);
402: free(pp);
403: }
404: #endif
1.3 doug 405: else if (rsa_config.outformat == FORMAT_PEM) {
406: if (rsa_config.pubout || rsa_config.pubin) {
407: if (rsa_config.pubout == 2)
1.1 jsing 408: i = PEM_write_bio_RSAPublicKey(out, rsa);
409: else
410: i = PEM_write_bio_RSA_PUBKEY(out, rsa);
411: } else
412: i = PEM_write_bio_RSAPrivateKey(out, rsa,
1.3 doug 413: rsa_config.enc, NULL, 0, NULL, passout);
1.1 jsing 414: #if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
1.3 doug 415: } else if (rsa_config.outformat == FORMAT_MSBLOB ||
416: rsa_config.outformat == FORMAT_PVK) {
1.1 jsing 417: EVP_PKEY *pk;
418: pk = EVP_PKEY_new();
419: EVP_PKEY_set1_RSA(pk, rsa);
1.3 doug 420: if (rsa_config.outformat == FORMAT_PVK)
421: i = i2b_PVK_bio(out, pk, rsa_config.pvk_encr, 0,
422: passout);
423: else if (rsa_config.pubin || rsa_config.pubout)
1.1 jsing 424: i = i2b_PublicKey_bio(out, pk);
425: else
426: i = i2b_PrivateKey_bio(out, pk);
427: EVP_PKEY_free(pk);
428: #endif
429: } else {
1.3 doug 430: BIO_printf(bio_err,
431: "bad output format specified for outfile\n");
1.1 jsing 432: goto end;
433: }
434: if (i <= 0) {
435: BIO_printf(bio_err, "unable to write key\n");
436: ERR_print_errors(bio_err);
437: } else
438: ret = 0;
1.3 doug 439:
1.1 jsing 440: end:
1.3 doug 441: BIO_free_all(out);
442: RSA_free(rsa);
1.1 jsing 443: free(passin);
444: free(passout);
445:
446: return (ret);
447: }
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