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Commit | Line | Data |
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846e33c7 | 1 | /* |
556009c5 | 2 | * Copyright 1995-2023 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 | |
d02b48c6 RE |
8 | */ |
9 | ||
effaf4de | 10 | #include <openssl/opensslconf.h> |
1ae56f2f RS |
11 | |
12 | #include <stdio.h> | |
13 | #include <string.h> | |
14 | #include <sys/types.h> | |
15 | #include <sys/stat.h> | |
16 | #include "apps.h" | |
17 | #include "progs.h" | |
18 | #include <openssl/bio.h> | |
19 | #include <openssl/err.h> | |
20 | #include <openssl/bn.h> | |
21 | #include <openssl/dsa.h> | |
22 | #include <openssl/x509.h> | |
23 | #include <openssl/pem.h> | |
d02b48c6 | 24 | |
7e1b7485 | 25 | typedef enum OPTION_choice { |
b0f96018 | 26 | OPT_COMMON, |
a414fd67 | 27 | OPT_OUT, OPT_PASSOUT, OPT_ENGINE, OPT_CIPHER, OPT_VERBOSE, OPT_QUIET, |
6bd4e3f2 | 28 | OPT_R_ENUM, OPT_PROV_ENUM |
7e1b7485 RS |
29 | } OPTION_CHOICE; |
30 | ||
44c83ebd | 31 | const OPTIONS gendsa_options[] = { |
92de469f | 32 | {OPT_HELP_STR, 1, '-', "Usage: %s [options] dsaparam-file\n"}, |
5388f986 RS |
33 | |
34 | OPT_SECTION("General"), | |
7e1b7485 | 35 | {"help", OPT_HELP, '-', "Display this summary"}, |
1ae56f2f | 36 | #ifndef OPENSSL_NO_ENGINE |
5388f986 | 37 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, |
1ae56f2f | 38 | #endif |
5388f986 RS |
39 | |
40 | OPT_SECTION("Output"), | |
7e1b7485 | 41 | {"out", OPT_OUT, '>', "Output the key to the specified file"}, |
12d56b29 | 42 | {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, |
3ee1eac2 | 43 | OPT_R_OPTIONS, |
6bd4e3f2 | 44 | OPT_PROV_OPTIONS, |
9c3bcfa0 | 45 | {"", OPT_CIPHER, '-', "Encrypt the output with any supported cipher"}, |
b6a07f67 | 46 | {"verbose", OPT_VERBOSE, '-', "Verbose output"}, |
a414fd67 | 47 | {"quiet", OPT_QUIET, '-', "Terse output"}, |
92de469f RS |
48 | |
49 | OPT_PARAMETERS(), | |
50 | {"dsaparam-file", 0, 0, "File containing DSA parameters"}, | |
7e1b7485 RS |
51 | {NULL} |
52 | }; | |
667ac4ec | 53 | |
7e1b7485 | 54 | int gendsa_main(int argc, char **argv) |
0f113f3e | 55 | { |
dd1abd44 | 56 | ENGINE *e = NULL; |
0f113f3e | 57 | BIO *out = NULL, *in = NULL; |
dddbbc6f P |
58 | EVP_PKEY *pkey = NULL; |
59 | EVP_PKEY_CTX *ctx = NULL; | |
606a417f | 60 | EVP_CIPHER *enc = NULL; |
03bbd346 | 61 | char *dsaparams = NULL, *ciphername = NULL; |
7e1b7485 RS |
62 | char *outfile = NULL, *passoutarg = NULL, *passout = NULL, *prog; |
63 | OPTION_CHOICE o; | |
26d52442 | 64 | int ret = 1, private = 0, verbose = 0, nbits; |
d02b48c6 | 65 | |
2c272447 | 66 | opt_set_unknown_name("cipher"); |
7e1b7485 RS |
67 | prog = opt_init(argc, argv, gendsa_options); |
68 | while ((o = opt_next()) != OPT_EOF) { | |
69 | switch (o) { | |
70 | case OPT_EOF: | |
71 | case OPT_ERR: | |
72 | opthelp: | |
73 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
74 | goto end; | |
75 | case OPT_HELP: | |
76 | ret = 0; | |
77 | opt_help(gendsa_options); | |
78 | goto end; | |
79 | case OPT_OUT: | |
80 | outfile = opt_arg(); | |
81 | break; | |
82 | case OPT_PASSOUT: | |
83 | passoutarg = opt_arg(); | |
84 | break; | |
85 | case OPT_ENGINE: | |
dd1abd44 | 86 | e = setup_engine(opt_arg(), 0); |
7e1b7485 | 87 | break; |
3ee1eac2 RS |
88 | case OPT_R_CASES: |
89 | if (!opt_rand(o)) | |
90 | goto end; | |
7e1b7485 | 91 | break; |
6bd4e3f2 P |
92 | case OPT_PROV_CASES: |
93 | if (!opt_provider(o)) | |
94 | goto end; | |
95 | break; | |
7e1b7485 | 96 | case OPT_CIPHER: |
03bbd346 | 97 | ciphername = opt_unknown(); |
0f113f3e | 98 | break; |
b6a07f67 PP |
99 | case OPT_VERBOSE: |
100 | verbose = 1; | |
101 | break; | |
a414fd67 PP |
102 | case OPT_QUIET: |
103 | verbose = 0; | |
104 | break; | |
0f113f3e | 105 | } |
0f113f3e | 106 | } |
021410ea RS |
107 | |
108 | /* One argument, the params file. */ | |
d9f07357 | 109 | if (!opt_check_rest_arg("params file")) |
7e1b7485 | 110 | goto opthelp; |
d9f07357 | 111 | argv = opt_rest(); |
03bbd346 | 112 | dsaparams = argv[0]; |
021410ea | 113 | |
3ad60309 DDO |
114 | if (!app_RAND_load()) |
115 | goto end; | |
116 | ||
d9f07357 DDO |
117 | if (!opt_cipher(ciphername, &enc)) |
118 | goto end; | |
021410ea | 119 | private = 1; |
d02b48c6 | 120 | |
7e1b7485 | 121 | if (!app_passwd(NULL, passoutarg, NULL, &passout)) { |
0f113f3e MC |
122 | BIO_printf(bio_err, "Error getting password\n"); |
123 | goto end; | |
124 | } | |
a3fe382e | 125 | |
d382e796 | 126 | pkey = load_keyparams(dsaparams, FORMAT_UNDEF, 1, "DSA", "DSA parameters"); |
d02b48c6 | 127 | |
bdd58d98 | 128 | out = bio_open_owner(outfile, FORMAT_PEM, private); |
0f113f3e | 129 | if (out == NULL) |
7e1b7485 | 130 | goto end2; |
d02b48c6 | 131 | |
ed576acd | 132 | nbits = EVP_PKEY_get_bits(pkey); |
26d52442 | 133 | if (nbits > OPENSSL_DSA_MAX_MODULUS_BITS) |
0336df2f GS |
134 | BIO_printf(bio_err, |
135 | "Warning: It is not recommended to use more than %d bit for DSA keys.\n" | |
136 | " Your key size is %d! Larger key size may behave not as expected.\n", | |
ed576acd | 137 | OPENSSL_DSA_MAX_MODULUS_BITS, EVP_PKEY_get_bits(pkey)); |
0336df2f | 138 | |
30b2c359 | 139 | ctx = EVP_PKEY_CTX_new_from_pkey(app_get0_libctx(), pkey, app_get0_propq()); |
dddbbc6f P |
140 | if (ctx == NULL) { |
141 | BIO_printf(bio_err, "unable to create PKEY context\n"); | |
142 | goto end; | |
143 | } | |
144 | EVP_PKEY_free(pkey); | |
145 | pkey = NULL; | |
146 | if (EVP_PKEY_keygen_init(ctx) <= 0) { | |
147 | BIO_printf(bio_err, "unable to set up for key generation\n"); | |
148 | goto end; | |
149 | } | |
a7e4ca5b | 150 | pkey = app_keygen(ctx, "DSA", nbits, verbose); |
8c040c08 BE |
151 | if (pkey == NULL) |
152 | goto end; | |
d02b48c6 | 153 | |
3b061a00 | 154 | assert(private); |
dddbbc6f P |
155 | if (!PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, passout)) { |
156 | BIO_printf(bio_err, "unable to output generated key\n"); | |
0f113f3e | 157 | goto end; |
dddbbc6f | 158 | } |
0f113f3e MC |
159 | ret = 0; |
160 | end: | |
161 | if (ret != 0) | |
162 | ERR_print_errors(bio_err); | |
7e1b7485 | 163 | end2: |
ca3a82c3 RS |
164 | BIO_free(in); |
165 | BIO_free_all(out); | |
dddbbc6f P |
166 | EVP_PKEY_free(pkey); |
167 | EVP_PKEY_CTX_free(ctx); | |
606a417f | 168 | EVP_CIPHER_free(enc); |
dd1abd44 | 169 | release_engine(e); |
b548a1f1 | 170 | OPENSSL_free(passout); |
26a7d938 | 171 | return ret; |
0f113f3e | 172 | } |