2 * Copyright 2006-2020 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
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
30 const 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"},
45 /* This is deliberately last. */
47 "Order of options may be important! See the documentation.\n"},
51 int genpkey_main(int argc, char **argv)
53 BIO *in = NULL, *out = 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;
60 int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0;
63 prog = opt_init(argc, argv, genpkey_options);
64 while ((o = opt_next()) != OPT_EOF) {
69 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
73 opt_help(genpkey_options);
76 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
86 e = setup_engine(opt_arg(), 0);
91 if (!init_keygen_file(&ctx, opt_arg(), e))
95 if (!init_gen_str(&ctx, opt_arg(), e, do_param))
100 BIO_printf(bio_err, "%s: No keytype specified.\n", prog);
103 if (pkey_ctrl_string(ctx, opt_arg()) <= 0) {
105 "%s: Error setting %s parameter:\n",
107 ERR_print_errors(bio_err);
120 if (!opt_cipher(opt_unknown(), &cipher)
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);
132 argc = opt_num_rest();
136 private = do_param ? 0 : 1;
141 if (!app_passwd(passarg, NULL, &pass, NULL)) {
142 BIO_puts(bio_err, "Error getting password\n");
146 out = bio_open_owner(outfile, outformat, private);
150 EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
151 EVP_PKEY_CTX_set_app_data(ctx, bio_err);
154 if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
155 BIO_puts(bio_err, "Error generating parameters\n");
156 ERR_print_errors(bio_err);
160 if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
161 BIO_puts(bio_err, "Error generating key\n");
162 ERR_print_errors(bio_err);
168 rv = PEM_write_bio_Parameters(out, pkey);
169 } else if (outformat == FORMAT_PEM) {
171 rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass);
172 } else if (outformat == FORMAT_ASN1) {
174 rv = i2d_PrivateKey_bio(out, pkey);
176 BIO_printf(bio_err, "Bad format specified for key\n");
183 BIO_puts(bio_err, "Error writing key\n");
184 ERR_print_errors(bio_err);
190 rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
192 rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
195 BIO_puts(bio_err, "Error printing key\n");
196 ERR_print_errors(bio_err);
203 EVP_PKEY_CTX_free(ctx);
211 static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e)
214 EVP_PKEY *pkey = NULL;
215 EVP_PKEY_CTX *ctx = NULL;
217 BIO_puts(bio_err, "Parameters already set!\n");
221 pbio = BIO_new_file(file, "r");
223 BIO_printf(bio_err, "Can't open parameter file %s\n", file);
227 pkey = PEM_read_bio_Parameters(pbio, NULL);
231 BIO_printf(bio_err, "Error reading parameter file %s\n", file);
235 ctx = EVP_PKEY_CTX_new(pkey, e);
238 if (EVP_PKEY_keygen_init(ctx) <= 0)
245 BIO_puts(bio_err, "Error initializing context\n");
246 ERR_print_errors(bio_err);
247 EVP_PKEY_CTX_free(ctx);
253 int init_gen_str(EVP_PKEY_CTX **pctx,
254 const char *algname, ENGINE *e, int do_param)
256 EVP_PKEY_CTX *ctx = NULL;
257 const EVP_PKEY_ASN1_METHOD *ameth;
258 ENGINE *tmpeng = NULL;
262 BIO_puts(bio_err, "Algorithm already set!\n");
266 ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
268 #ifndef OPENSSL_NO_ENGINE
270 ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
274 BIO_printf(bio_err, "Algorithm %s not found\n", algname);
280 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
281 #ifndef OPENSSL_NO_ENGINE
282 ENGINE_finish(tmpeng);
284 ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
289 if (EVP_PKEY_paramgen_init(ctx) <= 0)
292 if (EVP_PKEY_keygen_init(ctx) <= 0)
300 BIO_printf(bio_err, "Error initializing %s context\n", algname);
301 ERR_print_errors(bio_err);
302 EVP_PKEY_CTX_free(ctx);
307 static int genpkey_cb(EVP_PKEY_CTX *ctx)
310 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
312 p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);