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846e33c7 1/*
2234212c 2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
d02b48c6 3 *
846e33c7
RS
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
7e1b7485 8 */
d02b48c6 9
3eeaab4b 10#include <openssl/opensslconf.h>
effaf4de
RS
11#ifdef OPENSSL_NO_RSA
12NON_EMPTY_TRANSLATION_UNIT
13#else
14
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MC
15# include <stdio.h>
16# include <stdlib.h>
17# include <string.h>
18# include <time.h>
19# include "apps.h"
20# include <openssl/bio.h>
21# include <openssl/err.h>
22# include <openssl/rsa.h>
23# include <openssl/evp.h>
24# include <openssl/x509.h>
25# include <openssl/pem.h>
26# include <openssl/bn.h>
27
7e1b7485
RS
28typedef enum OPTION_choice {
29 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
30 OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT,
31 OPT_PUBIN, OPT_PUBOUT, OPT_PASSOUT, OPT_PASSIN,
e7917e38
F
32 OPT_RSAPUBKEY_IN, OPT_RSAPUBKEY_OUT,
33 /* Do not change the order here; see case statements below */
34 OPT_PVK_NONE, OPT_PVK_WEAK, OPT_PVK_STRONG,
35 OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_CHECK, OPT_CIPHER
7e1b7485
RS
36} OPTION_CHOICE;
37
44c83ebd 38const OPTIONS rsa_options[] = {
7e1b7485
RS
39 {"help", OPT_HELP, '-', "Display this summary"},
40 {"inform", OPT_INFORM, 'f', "Input format, one of DER NET PEM"},
41 {"outform", OPT_OUTFORM, 'f', "Output format, one of DER NET PEM PVK"},
dd958974 42 {"in", OPT_IN, 's', "Input file"},
7e1b7485
RS
43 {"out", OPT_OUT, '>', "Output file"},
44 {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
45 {"pubout", OPT_PUBOUT, '-', "Output a public key"},
46 {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
47 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
bc2f5803
RS
48 {"RSAPublicKey_in", OPT_RSAPUBKEY_IN, '-', "Input is an RSAPublicKey"},
49 {"RSAPublicKey_out", OPT_RSAPUBKEY_OUT, '-', "Output is an RSAPublicKey"},
7e1b7485
RS
50 {"noout", OPT_NOOUT, '-', "Don't print key out"},
51 {"text", OPT_TEXT, '-', "Print the key in text"},
52 {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
53 {"check", OPT_CHECK, '-', "Verify key consistency"},
54 {"", OPT_CIPHER, '-', "Any supported cipher"},
e5452d40 55# if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
e7917e38
F
56 {"pvk-strong", OPT_PVK_STRONG, '-', "Enable 'Strong' PVK encoding level (default)"},
57 {"pvk-weak", OPT_PVK_WEAK, '-', "Enable 'Weak' PVK encoding level"},
58 {"pvk-none", OPT_PVK_NONE, '-', "Don't enforce PVK encoding"},
9c3bcfa0 59# endif
7e1b7485
RS
60# ifndef OPENSSL_NO_ENGINE
61 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
62# endif
63 {NULL}
64};
667ac4ec 65
7e1b7485 66int rsa_main(int argc, char **argv)
0f113f3e
MC
67{
68 ENGINE *e = NULL;
7e1b7485 69 BIO *out = NULL;
0f113f3e 70 RSA *rsa = NULL;
0f113f3e 71 const EVP_CIPHER *enc = NULL;
333b070e 72 char *infile = NULL, *outfile = NULL, *prog;
7e1b7485 73 char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
3b061a00 74 int i, private = 0;
7e1b7485 75 int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, check = 0;
83ae8124
MC
76 int noout = 0, modulus = 0, pubin = 0, pubout = 0, ret = 1;
77# if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
78 int pvk_encr = 2;
e5452d40 79# endif
7e1b7485
RS
80 OPTION_CHOICE o;
81
82 prog = opt_init(argc, argv, rsa_options);
83 while ((o = opt_next()) != OPT_EOF) {
84 switch (o) {
85 case OPT_EOF:
86 case OPT_ERR:
7e1b7485
RS
87 opthelp:
88 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
89 goto end;
90 case OPT_HELP:
91 opt_help(rsa_options);
92 ret = 0;
93 goto end;
94 case OPT_INFORM:
95 if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
96 goto opthelp;
97 break;
98 case OPT_IN:
99 infile = opt_arg();
100 break;
101 case OPT_OUTFORM:
102 if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
103 goto opthelp;
104 break;
105 case OPT_OUT:
106 outfile = opt_arg();
107 break;
108 case OPT_PASSIN:
109 passinarg = opt_arg();
110 break;
111 case OPT_PASSOUT:
112 passoutarg = opt_arg();
113 break;
114 case OPT_ENGINE:
333b070e 115 e = setup_engine(opt_arg(), 0);
7e1b7485
RS
116 break;
117 case OPT_PUBIN:
0f113f3e 118 pubin = 1;
7e1b7485
RS
119 break;
120 case OPT_PUBOUT:
0f113f3e 121 pubout = 1;
7e1b7485
RS
122 break;
123 case OPT_RSAPUBKEY_IN:
0f113f3e 124 pubin = 2;
7e1b7485
RS
125 break;
126 case OPT_RSAPUBKEY_OUT:
0f113f3e 127 pubout = 2;
7e1b7485 128 break;
e7917e38
F
129 case OPT_PVK_STRONG: /* pvk_encr:= 2 */
130 case OPT_PVK_WEAK: /* pvk_encr:= 1 */
131 case OPT_PVK_NONE: /* pvk_encr:= 0 */
83ae8124 132# if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
e7917e38 133 pvk_encr = (o - OPT_PVK_NONE);
e5452d40 134# endif
e7917e38 135 break;
7e1b7485 136 case OPT_NOOUT:
0f113f3e 137 noout = 1;
7e1b7485
RS
138 break;
139 case OPT_TEXT:
0f113f3e 140 text = 1;
7e1b7485
RS
141 break;
142 case OPT_MODULUS:
0f113f3e 143 modulus = 1;
7e1b7485
RS
144 break;
145 case OPT_CHECK:
0f113f3e 146 check = 1;
7e1b7485
RS
147 break;
148 case OPT_CIPHER:
149 if (!opt_cipher(opt_unknown(), &enc))
150 goto opthelp;
0f113f3e
MC
151 break;
152 }
0f113f3e 153 }
7e1b7485 154 argc = opt_num_rest();
03358517
KR
155 if (argc != 0)
156 goto opthelp;
157
7eff6aa0 158 private = (text && !pubin) || (!pubout && !noout) ? 1 : 0;
0f113f3e 159
7e1b7485 160 if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
0f113f3e
MC
161 BIO_printf(bio_err, "Error getting passwords\n");
162 goto end;
163 }
0f113f3e
MC
164 if (check && pubin) {
165 BIO_printf(bio_err, "Only private keys can be checked\n");
166 goto end;
167 }
168
0f113f3e
MC
169 {
170 EVP_PKEY *pkey;
171
172 if (pubin) {
173 int tmpformat = -1;
174 if (pubin == 2) {
175 if (informat == FORMAT_PEM)
176 tmpformat = FORMAT_PEMRSA;
177 else if (informat == FORMAT_ASN1)
178 tmpformat = FORMAT_ASN1RSA;
2234212c 179 } else {
0f113f3e 180 tmpformat = informat;
2234212c 181 }
0f113f3e 182
7e1b7485 183 pkey = load_pubkey(infile, tmpformat, 1, passin, e, "Public Key");
2234212c 184 } else {
7e1b7485 185 pkey = load_key(infile, informat, 1, passin, e, "Private Key");
2234212c 186 }
0f113f3e
MC
187
188 if (pkey != NULL)
189 rsa = EVP_PKEY_get1_RSA(pkey);
190 EVP_PKEY_free(pkey);
191 }
192
193 if (rsa == NULL) {
194 ERR_print_errors(bio_err);
195 goto end;
196 }
197
bdd58d98 198 out = bio_open_owner(outfile, outformat, private);
7e1b7485
RS
199 if (out == NULL)
200 goto end;
0f113f3e 201
3b061a00 202 if (text) {
7eff6aa0 203 assert(pubin || private);
0f113f3e
MC
204 if (!RSA_print(out, rsa, 0)) {
205 perror(outfile);
206 ERR_print_errors(bio_err);
207 goto end;
208 }
3b061a00 209 }
0f113f3e
MC
210
211 if (modulus) {
2ac6115d 212 const BIGNUM *n;
9862e9aa 213 RSA_get0_key(rsa, &n, NULL, NULL);
0f113f3e 214 BIO_printf(out, "Modulus=");
9862e9aa 215 BN_print(out, n);
0f113f3e
MC
216 BIO_printf(out, "\n");
217 }
218
219 if (check) {
220 int r = RSA_check_key(rsa);
221
2234212c 222 if (r == 1) {
0f113f3e 223 BIO_printf(out, "RSA key ok\n");
2234212c 224 } else if (r == 0) {
0f113f3e
MC
225 unsigned long err;
226
227 while ((err = ERR_peek_error()) != 0 &&
228 ERR_GET_LIB(err) == ERR_LIB_RSA &&
229 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
230 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) {
231 BIO_printf(out, "RSA key error: %s\n",
232 ERR_reason_error_string(err));
233 ERR_get_error(); /* remove e from error stack */
234 }
63db6b77 235 } else if (r == -1) {
0f113f3e
MC
236 ERR_print_errors(bio_err);
237 goto end;
238 }
239 }
240
241 if (noout) {
242 ret = 0;
243 goto end;
244 }
245 BIO_printf(bio_err, "writing RSA key\n");
246 if (outformat == FORMAT_ASN1) {
247 if (pubout || pubin) {
248 if (pubout == 2)
249 i = i2d_RSAPublicKey_bio(out, rsa);
250 else
251 i = i2d_RSA_PUBKEY_bio(out, rsa);
3b061a00
RS
252 } else {
253 assert(private);
0f113f3e 254 i = i2d_RSAPrivateKey_bio(out, rsa);
3b061a00 255 }
2234212c 256 } else if (outformat == FORMAT_PEM) {
0f113f3e
MC
257 if (pubout || pubin) {
258 if (pubout == 2)
259 i = PEM_write_bio_RSAPublicKey(out, rsa);
260 else
261 i = PEM_write_bio_RSA_PUBKEY(out, rsa);
3b061a00
RS
262 } else {
263 assert(private);
0f113f3e
MC
264 i = PEM_write_bio_RSAPrivateKey(out, rsa,
265 enc, NULL, 0, NULL, passout);
3b061a00 266 }
b6c68982 267# ifndef OPENSSL_NO_DSA
0f113f3e
MC
268 } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
269 EVP_PKEY *pk;
270 pk = EVP_PKEY_new();
271 EVP_PKEY_set1_RSA(pk, rsa);
7eff6aa0
VD
272 if (outformat == FORMAT_PVK) {
273 if (pubin) {
274 BIO_printf(bio_err, "PVK form impossible with public key input\n");
275 EVP_PKEY_free(pk);
276 goto end;
277 }
278 assert(private);
b6c68982
DSH
279# ifdef OPENSSL_NO_RC4
280 BIO_printf(bio_err, "PVK format not supported\n");
281 EVP_PKEY_free(pk);
282 goto end;
283# else
0f113f3e 284 i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
b6c68982 285# endif
7eff6aa0 286 } else if (pubin || pubout) {
0f113f3e 287 i = i2b_PublicKey_bio(out, pk);
7eff6aa0 288 } else {
3b061a00 289 assert(private);
0f113f3e 290 i = i2b_PrivateKey_bio(out, pk);
3b061a00 291 }
0f113f3e
MC
292 EVP_PKEY_free(pk);
293# endif
294 } else {
295 BIO_printf(bio_err, "bad output format specified for outfile\n");
296 goto end;
297 }
298 if (i <= 0) {
299 BIO_printf(bio_err, "unable to write key\n");
300 ERR_print_errors(bio_err);
2234212c 301 } else {
0f113f3e 302 ret = 0;
2234212c 303 }
0f113f3e 304 end:
dd1abd44 305 release_engine(e);
ca3a82c3 306 BIO_free_all(out);
d6407083 307 RSA_free(rsa);
b548a1f1
RS
308 OPENSSL_free(passin);
309 OPENSSL_free(passout);
7e1b7485 310 return (ret);
0f113f3e 311}
f5d7a031 312#endif