2 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
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
13 #include <openssl/pem.h>
14 #include <openssl/err.h>
15 #include <openssl/evp.h>
16 #ifndef OPENSSL_NO_ENGINE
17 # include <openssl/engine.h>
20 static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e);
21 static int genpkey_cb(EVP_PKEY_CTX *ctx);
23 typedef enum OPTION_choice {
24 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
25 OPT_ENGINE, OPT_OUTFORM, OPT_OUT, OPT_PASS, OPT_PARAMFILE,
26 OPT_ALGORITHM, OPT_PKEYOPT, OPT_GENPARAM, OPT_TEXT, OPT_CIPHER
29 const OPTIONS genpkey_options[] = {
30 {"help", OPT_HELP, '-', "Display this summary"},
31 {"out", OPT_OUT, '>', "Output file"},
32 {"outform", OPT_OUTFORM, 'F', "output format (DER or PEM)"},
33 {"pass", OPT_PASS, 's', "Output file pass phrase source"},
34 {"paramfile", OPT_PARAMFILE, '<', "Parameters file"},
35 {"algorithm", OPT_ALGORITHM, 's', "The public key algorithm"},
36 {"pkeyopt", OPT_PKEYOPT, 's',
37 "Set the public key algorithm option as opt:value"},
38 {"genparam", OPT_GENPARAM, '-', "Generate parameters, not key"},
39 {"text", OPT_TEXT, '-', "Print the in text"},
40 {"", OPT_CIPHER, '-', "Cipher to use to encrypt the key"},
41 #ifndef OPENSSL_NO_ENGINE
42 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
44 /* This is deliberately last. */
46 "Order of options may be important! See the documentation.\n"},
50 int genpkey_main(int argc, char **argv)
52 BIO *in = NULL, *out = NULL;
54 EVP_PKEY *pkey = NULL;
55 EVP_PKEY_CTX *ctx = NULL;
56 char *outfile = NULL, *passarg = NULL, *pass = NULL, *prog;
57 const EVP_CIPHER *cipher = NULL;
59 int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0;
62 prog = opt_init(argc, argv, genpkey_options);
63 while ((o = opt_next()) != OPT_EOF) {
68 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
72 opt_help(genpkey_options);
75 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
85 e = setup_engine(opt_arg(), 0);
90 if (!init_keygen_file(&ctx, opt_arg(), e))
94 if (!init_gen_str(&ctx, opt_arg(), e, do_param))
99 BIO_printf(bio_err, "%s: No keytype specified.\n", prog);
102 if (pkey_ctrl_string(ctx, opt_arg()) <= 0) {
104 "%s: Error setting %s parameter:\n",
106 ERR_print_errors(bio_err);
119 if (!opt_cipher(opt_unknown(), &cipher)
124 argc = opt_num_rest();
128 private = do_param ? 0 : 1;
133 if (!app_passwd(passarg, NULL, &pass, NULL)) {
134 BIO_puts(bio_err, "Error getting password\n");
138 out = bio_open_owner(outfile, outformat, private);
142 EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
143 EVP_PKEY_CTX_set_app_data(ctx, bio_err);
146 if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
147 BIO_puts(bio_err, "Error generating parameters\n");
148 ERR_print_errors(bio_err);
152 if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
153 BIO_puts(bio_err, "Error generating key\n");
154 ERR_print_errors(bio_err);
160 rv = PEM_write_bio_Parameters(out, pkey);
161 else if (outformat == FORMAT_PEM) {
163 rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass);
164 } else if (outformat == FORMAT_ASN1) {
166 rv = i2d_PrivateKey_bio(out, pkey);
168 BIO_printf(bio_err, "Bad format specified for key\n");
173 BIO_puts(bio_err, "Error writing key\n");
174 ERR_print_errors(bio_err);
179 rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
181 rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
184 BIO_puts(bio_err, "Error printing key\n");
185 ERR_print_errors(bio_err);
193 EVP_PKEY_CTX_free(ctx);
201 static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e)
204 EVP_PKEY *pkey = NULL;
205 EVP_PKEY_CTX *ctx = NULL;
207 BIO_puts(bio_err, "Parameters already set!\n");
211 pbio = BIO_new_file(file, "r");
213 BIO_printf(bio_err, "Can't open parameter file %s\n", file);
217 pkey = PEM_read_bio_Parameters(pbio, NULL);
221 BIO_printf(bio_err, "Error reading parameter file %s\n", file);
225 ctx = EVP_PKEY_CTX_new(pkey, e);
228 if (EVP_PKEY_keygen_init(ctx) <= 0)
235 BIO_puts(bio_err, "Error initializing context\n");
236 ERR_print_errors(bio_err);
237 EVP_PKEY_CTX_free(ctx);
243 int init_gen_str(EVP_PKEY_CTX **pctx,
244 const char *algname, ENGINE *e, int do_param)
246 EVP_PKEY_CTX *ctx = NULL;
247 const EVP_PKEY_ASN1_METHOD *ameth;
248 ENGINE *tmpeng = NULL;
252 BIO_puts(bio_err, "Algorithm already set!\n");
256 ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
258 #ifndef OPENSSL_NO_ENGINE
260 ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
264 BIO_printf(bio_err, "Algorithm %s not found\n", algname);
270 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
271 #ifndef OPENSSL_NO_ENGINE
272 ENGINE_finish(tmpeng);
274 ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
279 if (EVP_PKEY_paramgen_init(ctx) <= 0)
282 if (EVP_PKEY_keygen_init(ctx) <= 0)
290 BIO_printf(bio_err, "Error initializing %s context\n", algname);
291 ERR_print_errors(bio_err);
292 EVP_PKEY_CTX_free(ctx);
297 static int genpkey_cb(EVP_PKEY_CTX *ctx)
300 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
302 p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);