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846e33c7 | 1 | /* |
a28d06f3 | 2 | * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
dffa7520 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
846e33c7 RS |
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 | 11 | |
1ae56f2f RS |
12 | #include <stdio.h> |
13 | #include <stdlib.h> | |
14 | #include <string.h> | |
15 | #include <time.h> | |
16 | #include "apps.h" | |
17 | #include "progs.h" | |
18 | #include <openssl/bio.h> | |
19 | #include <openssl/err.h> | |
20 | #include <openssl/rsa.h> | |
21 | #include <openssl/evp.h> | |
22 | #include <openssl/x509.h> | |
23 | #include <openssl/pem.h> | |
24 | #include <openssl/bn.h> | |
d7e498ac RL |
25 | #include <openssl/encoder.h> |
26 | ||
27 | /* | |
28 | * TODO: This include is to get OSSL_KEYMGMT_SELECT_*, which feels a bit | |
29 | * much just for those macros... they might serve better as EVP macros. | |
30 | */ | |
31 | #include <openssl/core_dispatch.h> | |
0f113f3e | 32 | |
47422549 P |
33 | #ifndef OPENSSL_NO_RC4 |
34 | # define DEFAULT_PVK_ENCR_STRENGTH 2 | |
35 | #else | |
36 | # define DEFAULT_PVK_ENCR_STRENGTH 0 | |
37 | #endif | |
38 | ||
7e1b7485 RS |
39 | typedef enum OPTION_choice { |
40 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, | |
41 | OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT, | |
42 | OPT_PUBIN, OPT_PUBOUT, OPT_PASSOUT, OPT_PASSIN, | |
e7917e38 F |
43 | OPT_RSAPUBKEY_IN, OPT_RSAPUBKEY_OUT, |
44 | /* Do not change the order here; see case statements below */ | |
45 | OPT_PVK_NONE, OPT_PVK_WEAK, OPT_PVK_STRONG, | |
6bd4e3f2 | 46 | OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_CHECK, OPT_CIPHER, |
10203a34 | 47 | OPT_PROV_ENUM, OPT_TRADITIONAL |
7e1b7485 RS |
48 | } OPTION_CHOICE; |
49 | ||
44c83ebd | 50 | const OPTIONS rsa_options[] = { |
5388f986 | 51 | OPT_SECTION("General"), |
7e1b7485 | 52 | {"help", OPT_HELP, '-', "Display this summary"}, |
5388f986 RS |
53 | {"check", OPT_CHECK, '-', "Verify key consistency"}, |
54 | {"", OPT_CIPHER, '-', "Any supported cipher"}, | |
1ae56f2f | 55 | #ifndef OPENSSL_NO_ENGINE |
5388f986 | 56 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, |
1ae56f2f | 57 | #endif |
5388f986 RS |
58 | |
59 | OPT_SECTION("Input"), | |
dd958974 | 60 | {"in", OPT_IN, 's', "Input file"}, |
6d382c74 | 61 | {"inform", OPT_INFORM, 'f', "Input format (DER/PEM/P12/ENGINE"}, |
7e1b7485 | 62 | {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"}, |
bc2f5803 | 63 | {"RSAPublicKey_in", OPT_RSAPUBKEY_IN, '-', "Input is an RSAPublicKey"}, |
5388f986 RS |
64 | {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, |
65 | ||
66 | OPT_SECTION("Output"), | |
67 | {"out", OPT_OUT, '>', "Output file"}, | |
68 | {"outform", OPT_OUTFORM, 'f', "Output format, one of DER PEM PVK"}, | |
69 | {"pubout", OPT_PUBOUT, '-', "Output a public key"}, | |
bc2f5803 | 70 | {"RSAPublicKey_out", OPT_RSAPUBKEY_OUT, '-', "Output is an RSAPublicKey"}, |
5388f986 | 71 | {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, |
7e1b7485 RS |
72 | {"noout", OPT_NOOUT, '-', "Don't print key out"}, |
73 | {"text", OPT_TEXT, '-', "Print the key in text"}, | |
74 | {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"}, | |
10203a34 KR |
75 | {"traditional", OPT_TRADITIONAL, '-', |
76 | "Use traditional format for private keys"}, | |
5388f986 | 77 | |
47422549 | 78 | #ifndef OPENSSL_NO_RC4 |
5388f986 | 79 | OPT_SECTION("PVK"), |
e7917e38 F |
80 | {"pvk-strong", OPT_PVK_STRONG, '-', "Enable 'Strong' PVK encoding level (default)"}, |
81 | {"pvk-weak", OPT_PVK_WEAK, '-', "Enable 'Weak' PVK encoding level"}, | |
82 | {"pvk-none", OPT_PVK_NONE, '-', "Don't enforce PVK encoding"}, | |
47422549 | 83 | #endif |
6bd4e3f2 P |
84 | |
85 | OPT_PROV_OPTIONS, | |
7e1b7485 RS |
86 | {NULL} |
87 | }; | |
667ac4ec | 88 | |
7e1b7485 | 89 | int rsa_main(int argc, char **argv) |
0f113f3e MC |
90 | { |
91 | ENGINE *e = NULL; | |
7e1b7485 | 92 | BIO *out = NULL; |
54affb77 P |
93 | EVP_PKEY *pkey = NULL; |
94 | EVP_PKEY_CTX *pctx; | |
0f113f3e | 95 | const EVP_CIPHER *enc = NULL; |
03bbd346 | 96 | char *infile = NULL, *outfile = NULL, *ciphername = NULL, *prog; |
7e1b7485 | 97 | char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL; |
d7e498ac | 98 | int private = 0; |
7e1b7485 | 99 | int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, check = 0; |
83ae8124 | 100 | int noout = 0, modulus = 0, pubin = 0, pubout = 0, ret = 1; |
47422549 | 101 | int pvk_encr = DEFAULT_PVK_ENCR_STRENGTH; |
7e1b7485 | 102 | OPTION_CHOICE o; |
10203a34 | 103 | int traditional = 0; |
d7e498ac RL |
104 | const char *output_type = NULL; |
105 | const char *output_structure = NULL; | |
106 | int selection = 0; | |
107 | OSSL_ENCODER_CTX *ectx = NULL; | |
7e1b7485 RS |
108 | |
109 | prog = opt_init(argc, argv, rsa_options); | |
110 | while ((o = opt_next()) != OPT_EOF) { | |
111 | switch (o) { | |
112 | case OPT_EOF: | |
113 | case OPT_ERR: | |
7e1b7485 RS |
114 | opthelp: |
115 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
116 | goto end; | |
117 | case OPT_HELP: | |
118 | opt_help(rsa_options); | |
119 | ret = 0; | |
120 | goto end; | |
121 | case OPT_INFORM: | |
122 | if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat)) | |
123 | goto opthelp; | |
124 | break; | |
125 | case OPT_IN: | |
126 | infile = opt_arg(); | |
127 | break; | |
128 | case OPT_OUTFORM: | |
129 | if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat)) | |
130 | goto opthelp; | |
131 | break; | |
132 | case OPT_OUT: | |
133 | outfile = opt_arg(); | |
134 | break; | |
135 | case OPT_PASSIN: | |
136 | passinarg = opt_arg(); | |
137 | break; | |
138 | case OPT_PASSOUT: | |
139 | passoutarg = opt_arg(); | |
140 | break; | |
141 | case OPT_ENGINE: | |
333b070e | 142 | e = setup_engine(opt_arg(), 0); |
7e1b7485 RS |
143 | break; |
144 | case OPT_PUBIN: | |
0f113f3e | 145 | pubin = 1; |
7e1b7485 RS |
146 | break; |
147 | case OPT_PUBOUT: | |
0f113f3e | 148 | pubout = 1; |
7e1b7485 RS |
149 | break; |
150 | case OPT_RSAPUBKEY_IN: | |
0f113f3e | 151 | pubin = 2; |
7e1b7485 RS |
152 | break; |
153 | case OPT_RSAPUBKEY_OUT: | |
0f113f3e | 154 | pubout = 2; |
7e1b7485 | 155 | break; |
e7917e38 F |
156 | case OPT_PVK_STRONG: /* pvk_encr:= 2 */ |
157 | case OPT_PVK_WEAK: /* pvk_encr:= 1 */ | |
158 | case OPT_PVK_NONE: /* pvk_encr:= 0 */ | |
e7917e38 | 159 | pvk_encr = (o - OPT_PVK_NONE); |
e7917e38 | 160 | break; |
7e1b7485 | 161 | case OPT_NOOUT: |
0f113f3e | 162 | noout = 1; |
7e1b7485 RS |
163 | break; |
164 | case OPT_TEXT: | |
0f113f3e | 165 | text = 1; |
7e1b7485 RS |
166 | break; |
167 | case OPT_MODULUS: | |
0f113f3e | 168 | modulus = 1; |
7e1b7485 RS |
169 | break; |
170 | case OPT_CHECK: | |
0f113f3e | 171 | check = 1; |
7e1b7485 RS |
172 | break; |
173 | case OPT_CIPHER: | |
03bbd346 | 174 | ciphername = opt_unknown(); |
0f113f3e | 175 | break; |
6bd4e3f2 P |
176 | case OPT_PROV_CASES: |
177 | if (!opt_provider(o)) | |
178 | goto end; | |
179 | break; | |
10203a34 KR |
180 | case OPT_TRADITIONAL: |
181 | traditional = 1; | |
182 | break; | |
0f113f3e | 183 | } |
0f113f3e | 184 | } |
021410ea RS |
185 | |
186 | /* No extra arguments. */ | |
7e1b7485 | 187 | argc = opt_num_rest(); |
03358517 KR |
188 | if (argc != 0) |
189 | goto opthelp; | |
190 | ||
03bbd346 RS |
191 | if (ciphername != NULL) { |
192 | if (!opt_cipher(ciphername, &enc)) | |
193 | goto opthelp; | |
194 | } | |
7eff6aa0 | 195 | private = (text && !pubin) || (!pubout && !noout) ? 1 : 0; |
0f113f3e | 196 | |
7e1b7485 | 197 | if (!app_passwd(passinarg, passoutarg, &passin, &passout)) { |
0f113f3e MC |
198 | BIO_printf(bio_err, "Error getting passwords\n"); |
199 | goto end; | |
200 | } | |
0f113f3e MC |
201 | if (check && pubin) { |
202 | BIO_printf(bio_err, "Only private keys can be checked\n"); | |
203 | goto end; | |
204 | } | |
205 | ||
54affb77 P |
206 | if (pubin) { |
207 | int tmpformat = -1; | |
0f113f3e | 208 | |
54affb77 P |
209 | if (pubin == 2) { |
210 | if (informat == FORMAT_PEM) | |
211 | tmpformat = FORMAT_PEMRSA; | |
212 | else if (informat == FORMAT_ASN1) | |
213 | tmpformat = FORMAT_ASN1RSA; | |
2234212c | 214 | } else { |
54affb77 | 215 | tmpformat = informat; |
2234212c | 216 | } |
0f113f3e | 217 | |
50eb2a50 | 218 | pkey = load_pubkey(infile, tmpformat, 1, passin, e, "public key"); |
54affb77 | 219 | } else { |
50eb2a50 | 220 | pkey = load_key(infile, informat, 1, passin, e, "private key"); |
0f113f3e MC |
221 | } |
222 | ||
d7e498ac | 223 | if (pkey == NULL) { |
0f113f3e MC |
224 | ERR_print_errors(bio_err); |
225 | goto end; | |
226 | } | |
d7e498ac RL |
227 | if (!EVP_PKEY_is_a(pkey, "RSA")) { |
228 | BIO_printf(bio_err, "Not an RSA key\n"); | |
229 | goto end; | |
230 | } | |
0f113f3e | 231 | |
bdd58d98 | 232 | out = bio_open_owner(outfile, outformat, private); |
7e1b7485 RS |
233 | if (out == NULL) |
234 | goto end; | |
0f113f3e | 235 | |
3b061a00 | 236 | if (text) { |
7eff6aa0 | 237 | assert(pubin || private); |
54affb77 P |
238 | if ((pubin && EVP_PKEY_print_public(out, pkey, 0, NULL) <= 0) |
239 | || (!pubin && EVP_PKEY_print_private(out, pkey, 0, NULL) <= 0)) { | |
0f113f3e MC |
240 | perror(outfile); |
241 | ERR_print_errors(bio_err); | |
242 | goto end; | |
243 | } | |
3b061a00 | 244 | } |
0f113f3e MC |
245 | |
246 | if (modulus) { | |
d7e498ac RL |
247 | BIGNUM *n = NULL; |
248 | ||
249 | /* Every RSA key has an 'n' */ | |
250 | EVP_PKEY_get_bn_param(pkey, "n", &n); | |
0f113f3e | 251 | BIO_printf(out, "Modulus="); |
9862e9aa | 252 | BN_print(out, n); |
0f113f3e | 253 | BIO_printf(out, "\n"); |
d7e498ac | 254 | BN_free(n); |
0f113f3e MC |
255 | } |
256 | ||
257 | if (check) { | |
54affb77 P |
258 | int r; |
259 | ||
260 | pctx = EVP_PKEY_CTX_new_from_pkey(NULL, pkey, NULL); | |
261 | if (pctx == NULL) { | |
7f90026b | 262 | BIO_printf(bio_err, "RSA unable to create PKEY context\n"); |
54affb77 P |
263 | ERR_print_errors(bio_err); |
264 | goto end; | |
265 | } | |
266 | r = EVP_PKEY_check(pctx); | |
267 | EVP_PKEY_CTX_free(pctx); | |
0f113f3e | 268 | |
2234212c | 269 | if (r == 1) { |
0f113f3e | 270 | BIO_printf(out, "RSA key ok\n"); |
2234212c | 271 | } else if (r == 0) { |
7f90026b DDO |
272 | BIO_printf(bio_err, "RSA key not ok\n"); |
273 | ERR_print_errors(bio_err); | |
63db6b77 | 274 | } else if (r == -1) { |
0f113f3e MC |
275 | ERR_print_errors(bio_err); |
276 | goto end; | |
277 | } | |
278 | } | |
279 | ||
280 | if (noout) { | |
281 | ret = 0; | |
282 | goto end; | |
283 | } | |
284 | BIO_printf(bio_err, "writing RSA key\n"); | |
d7e498ac RL |
285 | |
286 | /* Choose output type for the format */ | |
0f113f3e | 287 | if (outformat == FORMAT_ASN1) { |
d7e498ac | 288 | output_type = "DER"; |
2234212c | 289 | } else if (outformat == FORMAT_PEM) { |
d7e498ac RL |
290 | output_type = "PEM"; |
291 | } else if (outformat == FORMAT_MSBLOB) { | |
292 | output_type = "MSBLOB"; | |
293 | } else if (outformat == FORMAT_PVK) { | |
294 | if (pubin) { | |
295 | BIO_printf(bio_err, "PVK form impossible with public key input\n"); | |
296 | goto end; | |
297 | } | |
298 | output_type = "PVK"; | |
299 | } else { | |
300 | BIO_printf(bio_err, "bad output format specified for outfile\n"); | |
301 | goto end; | |
302 | } | |
303 | ||
304 | /* Select what you want in the output */ | |
305 | if (pubout || pubin) { | |
306 | selection = OSSL_KEYMGMT_SELECT_PUBLIC_KEY; | |
307 | } else { | |
308 | assert(private); | |
309 | selection = (OSSL_KEYMGMT_SELECT_KEYPAIR | |
310 | | OSSL_KEYMGMT_SELECT_ALL_PARAMETERS); | |
311 | } | |
312 | ||
313 | /* For DER based output, select the desired output structure */ | |
314 | if (outformat == FORMAT_ASN1 || outformat == FORMAT_PEM) { | |
0f113f3e MC |
315 | if (pubout || pubin) { |
316 | if (pubout == 2) | |
d7e498ac | 317 | output_structure = "pkcs1"; /* "type-specific" would work too */ |
542b8488 RL |
318 | else |
319 | output_structure = "SubjectPublicKeyInfo"; | |
3b061a00 RS |
320 | } else { |
321 | assert(private); | |
d7e498ac RL |
322 | if (traditional) |
323 | output_structure = "pkcs1"; /* "type-specific" would work too */ | |
324 | else | |
325 | output_structure = "pkcs8"; | |
3b061a00 | 326 | } |
d7e498ac | 327 | } |
d896b79b | 328 | |
d7e498ac | 329 | /* Now, perform the encoding */ |
fe75766c TM |
330 | ectx = OSSL_ENCODER_CTX_new_for_pkey(pkey, selection, |
331 | output_type, output_structure, | |
332 | NULL); | |
d7e498ac RL |
333 | if (OSSL_ENCODER_CTX_get_num_encoders(ectx) == 0) { |
334 | BIO_printf(bio_err, "%s format not supported\n", output_type); | |
335 | goto end; | |
336 | } | |
337 | ||
338 | /* PVK is a bit special... */ | |
339 | if (outformat == FORMAT_PVK) { | |
340 | OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; | |
341 | ||
342 | params[0] = OSSL_PARAM_construct_int("encrypt-level", &pvk_encr); | |
343 | if (!OSSL_ENCODER_CTX_set_params(ectx, params)) { | |
344 | BIO_printf(bio_err, "invalid PVK encryption level\n"); | |
b6c68982 | 345 | goto end; |
3b061a00 | 346 | } |
0f113f3e | 347 | } |
d7e498ac RL |
348 | |
349 | if (!OSSL_ENCODER_to_bio(ectx, out)) { | |
0f113f3e MC |
350 | BIO_printf(bio_err, "unable to write key\n"); |
351 | ERR_print_errors(bio_err); | |
d7e498ac | 352 | goto end; |
2234212c | 353 | } |
d7e498ac | 354 | ret = 0; |
0f113f3e | 355 | end: |
d7e498ac | 356 | OSSL_ENCODER_CTX_free(ectx); |
dd1abd44 | 357 | release_engine(e); |
ca3a82c3 | 358 | BIO_free_all(out); |
54affb77 | 359 | EVP_PKEY_free(pkey); |
b548a1f1 RS |
360 | OPENSSL_free(passin); |
361 | OPENSSL_free(passout); | |
26a7d938 | 362 | return ret; |
0f113f3e | 363 | } |