2 * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
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>
21 static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e);
22 static int genpkey_cb(EVP_PKEY_CTX *ctx);
24 typedef 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,
31 const OPTIONS genpkey_options[] = {
32 OPT_SECTION("General"),
33 {"help", OPT_HELP, '-', "Display this summary"},
34 #ifndef OPENSSL_NO_ENGINE
35 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
37 {"paramfile", OPT_PARAMFILE, '<', "Parameters file"},
38 {"algorithm", OPT_ALGORITHM, 's', "The public key algorithm"},
39 {"pkeyopt", OPT_PKEYOPT, 's',
40 "Set the public key algorithm option as opt:value"},
42 OPT_SECTION("Output"),
43 {"out", OPT_OUT, '>', "Output file"},
44 {"outform", OPT_OUTFORM, 'F', "output format (DER or PEM)"},
45 {"pass", OPT_PASS, 's', "Output file pass phrase source"},
46 {"genparam", OPT_GENPARAM, '-', "Generate parameters, not key"},
47 {"text", OPT_TEXT, '-', "Print the in text"},
48 {"", OPT_CIPHER, '-', "Cipher to use to encrypt the key"},
52 /* This is deliberately last. */
54 "Order of options may be important! See the documentation.\n"},
58 int genpkey_main(int argc, char **argv)
60 BIO *in = NULL, *out = NULL;
62 EVP_PKEY *pkey = NULL;
63 EVP_PKEY_CTX *ctx = NULL;
64 char *outfile = NULL, *passarg = NULL, *pass = NULL, *prog;
65 const EVP_CIPHER *cipher = NULL;
67 int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0;
70 prog = opt_init(argc, argv, genpkey_options);
71 while ((o = opt_next()) != OPT_EOF) {
76 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
80 opt_help(genpkey_options);
83 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
93 e = setup_engine(opt_arg(), 0);
98 if (!init_keygen_file(&ctx, opt_arg(), e))
102 if (!init_gen_str(&ctx, opt_arg(), e, do_param))
107 BIO_printf(bio_err, "%s: No keytype specified.\n", prog);
110 if (pkey_ctrl_string(ctx, opt_arg()) <= 0) {
112 "%s: Error setting %s parameter:\n",
114 ERR_print_errors(bio_err);
127 if (!opt_cipher(opt_unknown(), &cipher)
130 if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE ||
131 EVP_CIPHER_mode(cipher) == EVP_CIPH_CCM_MODE ||
132 EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE ||
133 EVP_CIPHER_mode(cipher) == EVP_CIPH_OCB_MODE) {
134 BIO_printf(bio_err, "%s: cipher mode not supported\n", prog);
139 if (!opt_provider(o))
144 argc = opt_num_rest();
148 private = do_param ? 0 : 1;
153 if (!app_passwd(passarg, NULL, &pass, NULL)) {
154 BIO_puts(bio_err, "Error getting password\n");
158 out = bio_open_owner(outfile, outformat, private);
162 EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
163 EVP_PKEY_CTX_set_app_data(ctx, bio_err);
166 if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
167 BIO_puts(bio_err, "Error generating parameters\n");
168 ERR_print_errors(bio_err);
172 if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
173 BIO_puts(bio_err, "Error generating key\n");
174 ERR_print_errors(bio_err);
180 rv = PEM_write_bio_Parameters(out, pkey);
181 } else if (outformat == FORMAT_PEM) {
183 rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass);
184 } else if (outformat == FORMAT_ASN1) {
186 rv = i2d_PrivateKey_bio(out, pkey);
188 BIO_printf(bio_err, "Bad format specified for key\n");
193 BIO_puts(bio_err, "Error writing key\n");
194 ERR_print_errors(bio_err);
199 rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
201 rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
204 BIO_puts(bio_err, "Error printing key\n");
205 ERR_print_errors(bio_err);
213 EVP_PKEY_CTX_free(ctx);
221 static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e)
224 EVP_PKEY *pkey = NULL;
225 EVP_PKEY_CTX *ctx = NULL;
227 BIO_puts(bio_err, "Parameters already set!\n");
231 pbio = BIO_new_file(file, "r");
233 BIO_printf(bio_err, "Can't open parameter file %s\n", file);
237 pkey = PEM_read_bio_Parameters(pbio, NULL);
241 BIO_printf(bio_err, "Error reading parameter file %s\n", file);
245 ctx = EVP_PKEY_CTX_new(pkey, e);
248 if (EVP_PKEY_keygen_init(ctx) <= 0)
255 BIO_puts(bio_err, "Error initializing context\n");
256 ERR_print_errors(bio_err);
257 EVP_PKEY_CTX_free(ctx);
263 int init_gen_str(EVP_PKEY_CTX **pctx,
264 const char *algname, ENGINE *e, int do_param)
266 EVP_PKEY_CTX *ctx = NULL;
267 const EVP_PKEY_ASN1_METHOD *ameth;
268 ENGINE *tmpeng = NULL;
272 BIO_puts(bio_err, "Algorithm already set!\n");
276 ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
278 #ifndef OPENSSL_NO_ENGINE
280 ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
284 BIO_printf(bio_err, "Algorithm %s not found\n", algname);
290 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
291 #ifndef OPENSSL_NO_ENGINE
292 ENGINE_finish(tmpeng);
294 ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
299 if (EVP_PKEY_paramgen_init(ctx) <= 0)
302 if (EVP_PKEY_keygen_init(ctx) <= 0)
310 BIO_printf(bio_err, "Error initializing %s context\n", algname);
311 ERR_print_errors(bio_err);
312 EVP_PKEY_CTX_free(ctx);
317 static int genpkey_cb(EVP_PKEY_CTX *ctx)
320 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
322 p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);