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source: vbox/trunk/src/libs/openssl-1.1.1l/apps/genpkey.c@ 91772

Last change on this file since 91772 was 91772, checked in by vboxsync, 3 years ago

openssl-1.1.1l: Applied and adjusted our OpenSSL changes to 1.1.1l. bugref:10126

File size: 8.6 KB
Line 
1/*
2 * Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10#include <stdio.h>
11#include <string.h>
12#include "apps.h"
13#include "progs.h"
14#include <openssl/pem.h>
15#include <openssl/err.h>
16#include <openssl/evp.h>
17#ifndef OPENSSL_NO_ENGINE
18# include <openssl/engine.h>
19#endif
20
21static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e);
22static int genpkey_cb(EVP_PKEY_CTX *ctx);
23
24typedef enum OPTION_choice {
25 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
26 OPT_ENGINE, OPT_OUTFORM, OPT_OUT, OPT_PASS, OPT_PARAMFILE,
27 OPT_ALGORITHM, OPT_PKEYOPT, OPT_GENPARAM, OPT_TEXT, OPT_CIPHER
28} OPTION_CHOICE;
29
30const OPTIONS genpkey_options[] = {
31 {"help", OPT_HELP, '-', "Display this summary"},
32 {"out", OPT_OUT, '>', "Output file"},
33 {"outform", OPT_OUTFORM, 'F', "output format (DER or PEM)"},
34 {"pass", OPT_PASS, 's', "Output file pass phrase source"},
35 {"paramfile", OPT_PARAMFILE, '<', "Parameters file"},
36 {"algorithm", OPT_ALGORITHM, 's', "The public key algorithm"},
37 {"pkeyopt", OPT_PKEYOPT, 's',
38 "Set the public key algorithm option as opt:value"},
39 {"genparam", OPT_GENPARAM, '-', "Generate parameters, not key"},
40 {"text", OPT_TEXT, '-', "Print the in text"},
41 {"", OPT_CIPHER, '-', "Cipher to use to encrypt the key"},
42#ifndef OPENSSL_NO_ENGINE
43 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
44#endif
45 /* This is deliberately last. */
46 {OPT_HELP_STR, 1, 1,
47 "Order of options may be important! See the documentation.\n"},
48 {NULL}
49};
50
51int genpkey_main(int argc, char **argv)
52{
53 BIO *in = NULL, *out = NULL;
54 ENGINE *e = NULL;
55 EVP_PKEY *pkey = NULL;
56 EVP_PKEY_CTX *ctx = NULL;
57 char *outfile = NULL, *passarg = NULL, *pass = NULL, *prog;
58 const EVP_CIPHER *cipher = NULL;
59 OPTION_CHOICE o;
60 int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0;
61 int private = 0;
62
63 prog = opt_init(argc, argv, genpkey_options);
64 while ((o = opt_next()) != OPT_EOF) {
65 switch (o) {
66 case OPT_EOF:
67 case OPT_ERR:
68 opthelp:
69 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
70 goto end;
71 case OPT_HELP:
72 ret = 0;
73 opt_help(genpkey_options);
74 goto end;
75 case OPT_OUTFORM:
76 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
77 goto opthelp;
78 break;
79 case OPT_OUT:
80 outfile = opt_arg();
81 break;
82 case OPT_PASS:
83 passarg = opt_arg();
84 break;
85 case OPT_ENGINE:
86 e = setup_engine(opt_arg(), 0);
87 break;
88 case OPT_PARAMFILE:
89 if (do_param == 1)
90 goto opthelp;
91 if (!init_keygen_file(&ctx, opt_arg(), e))
92 goto end;
93 break;
94 case OPT_ALGORITHM:
95 if (!init_gen_str(&ctx, opt_arg(), e, do_param))
96 goto end;
97 break;
98 case OPT_PKEYOPT:
99 if (ctx == NULL) {
100 BIO_printf(bio_err, "%s: No keytype specified.\n", prog);
101 goto opthelp;
102 }
103 if (pkey_ctrl_string(ctx, opt_arg()) <= 0) {
104 BIO_printf(bio_err,
105 "%s: Error setting %s parameter:\n",
106 prog, opt_arg());
107 ERR_print_errors(bio_err);
108 goto end;
109 }
110 break;
111 case OPT_GENPARAM:
112 if (ctx != NULL)
113 goto opthelp;
114 do_param = 1;
115 break;
116 case OPT_TEXT:
117 text = 1;
118 break;
119 case OPT_CIPHER:
120 if (!opt_cipher(opt_unknown(), &cipher)
121 || do_param == 1)
122 goto opthelp;
123 if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE ||
124 EVP_CIPHER_mode(cipher) == EVP_CIPH_CCM_MODE ||
125 EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE ||
126 EVP_CIPHER_mode(cipher) == EVP_CIPH_OCB_MODE) {
127 BIO_printf(bio_err, "%s: cipher mode not supported\n", prog);
128 goto end;
129 }
130 }
131 }
132 argc = opt_num_rest();
133 if (argc != 0)
134 goto opthelp;
135
136 private = do_param ? 0 : 1;
137
138 if (ctx == NULL)
139 goto opthelp;
140
141 if (!app_passwd(passarg, NULL, &pass, NULL)) {
142 BIO_puts(bio_err, "Error getting password\n");
143 goto end;
144 }
145
146 out = bio_open_owner(outfile, outformat, private);
147 if (out == NULL)
148 goto end;
149
150 EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
151 EVP_PKEY_CTX_set_app_data(ctx, bio_err);
152
153 if (do_param) {
154 if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
155 BIO_puts(bio_err, "Error generating parameters\n");
156 ERR_print_errors(bio_err);
157 goto end;
158 }
159 } else {
160 if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
161 BIO_puts(bio_err, "Error generating key\n");
162 ERR_print_errors(bio_err);
163 goto end;
164 }
165 }
166
167 if (do_param) {
168 rv = PEM_write_bio_Parameters(out, pkey);
169 } else if (outformat == FORMAT_PEM) {
170 assert(private);
171 rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass);
172 } else if (outformat == FORMAT_ASN1) {
173 assert(private);
174 rv = i2d_PrivateKey_bio(out, pkey);
175 } else {
176 BIO_printf(bio_err, "Bad format specified for key\n");
177 goto end;
178 }
179
180 ret = 0;
181
182 if (rv <= 0) {
183 BIO_puts(bio_err, "Error writing key\n");
184 ERR_print_errors(bio_err);
185 ret = 1;
186 }
187
188 if (text) {
189 if (do_param)
190 rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
191 else
192 rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
193
194 if (rv <= 0) {
195 BIO_puts(bio_err, "Error printing key\n");
196 ERR_print_errors(bio_err);
197 ret = 1;
198 }
199 }
200
201 end:
202 EVP_PKEY_free(pkey);
203 EVP_PKEY_CTX_free(ctx);
204 BIO_free_all(out);
205 BIO_free(in);
206 release_engine(e);
207 OPENSSL_free(pass);
208 return ret;
209}
210
211static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e)
212{
213 BIO *pbio;
214 EVP_PKEY *pkey = NULL;
215 EVP_PKEY_CTX *ctx = NULL;
216 if (*pctx) {
217 BIO_puts(bio_err, "Parameters already set!\n");
218 return 0;
219 }
220
221 pbio = BIO_new_file(file, "r");
222 if (!pbio) {
223 BIO_printf(bio_err, "Can't open parameter file %s\n", file);
224 return 0;
225 }
226
227 pkey = PEM_read_bio_Parameters(pbio, NULL);
228 BIO_free(pbio);
229
230 if (!pkey) {
231 BIO_printf(bio_err, "Error reading parameter file %s\n", file);
232 return 0;
233 }
234
235 ctx = EVP_PKEY_CTX_new(pkey, e);
236 if (ctx == NULL)
237 goto err;
238 if (EVP_PKEY_keygen_init(ctx) <= 0)
239 goto err;
240 EVP_PKEY_free(pkey);
241 *pctx = ctx;
242 return 1;
243
244 err:
245 BIO_puts(bio_err, "Error initializing context\n");
246 ERR_print_errors(bio_err);
247 EVP_PKEY_CTX_free(ctx);
248 EVP_PKEY_free(pkey);
249 return 0;
250
251}
252
253int init_gen_str(EVP_PKEY_CTX **pctx,
254 const char *algname, ENGINE *e, int do_param)
255{
256 EVP_PKEY_CTX *ctx = NULL;
257 const EVP_PKEY_ASN1_METHOD *ameth;
258 ENGINE *tmpeng = NULL;
259 int pkey_id;
260
261 if (*pctx) {
262 BIO_puts(bio_err, "Algorithm already set!\n");
263 return 0;
264 }
265
266 ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
267
268#ifndef OPENSSL_NO_ENGINE
269 if (!ameth && e)
270 ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
271#endif
272
273 if (!ameth) {
274 BIO_printf(bio_err, "Algorithm %s not found\n", algname);
275 return 0;
276 }
277
278 ERR_clear_error();
279
280 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
281#ifndef OPENSSL_NO_ENGINE
282 ENGINE_finish(tmpeng);
283#endif
284 ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
285
286 if (!ctx)
287 goto err;
288 if (do_param) {
289 if (EVP_PKEY_paramgen_init(ctx) <= 0)
290 goto err;
291 } else {
292 if (EVP_PKEY_keygen_init(ctx) <= 0)
293 goto err;
294 }
295
296 *pctx = ctx;
297 return 1;
298
299 err:
300 BIO_printf(bio_err, "Error initializing %s context\n", algname);
301 ERR_print_errors(bio_err);
302 EVP_PKEY_CTX_free(ctx);
303 return 0;
304
305}
306
307static int genpkey_cb(EVP_PKEY_CTX *ctx)
308{
309 char c = '*';
310 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
311 int p;
312 p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
313 if (p == 0)
314 c = '.';
315 if (p == 1)
316 c = '+';
317 if (p == 2)
318 c = '*';
319 if (p == 3)
320 c = '\n';
321 BIO_write(b, &c, 1);
322 (void)BIO_flush(b);
323 return 1;
324}
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