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Commit | Line | Data |
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846e33c7 | 1 | /* |
a28d06f3 | 2 | * Copyright 1995-2021 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, |
b6a07f67 | 27 | OPT_OUT, OPT_PASSOUT, OPT_ENGINE, OPT_CIPHER, OPT_VERBOSE, |
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"}, |
92de469f RS |
47 | |
48 | OPT_PARAMETERS(), | |
49 | {"dsaparam-file", 0, 0, "File containing DSA parameters"}, | |
7e1b7485 RS |
50 | {NULL} |
51 | }; | |
667ac4ec | 52 | |
7e1b7485 | 53 | int gendsa_main(int argc, char **argv) |
0f113f3e | 54 | { |
dd1abd44 | 55 | ENGINE *e = NULL; |
0f113f3e | 56 | BIO *out = NULL, *in = NULL; |
dddbbc6f P |
57 | EVP_PKEY *pkey = NULL; |
58 | EVP_PKEY_CTX *ctx = NULL; | |
606a417f | 59 | EVP_CIPHER *enc = NULL; |
03bbd346 | 60 | char *dsaparams = NULL, *ciphername = NULL; |
7e1b7485 RS |
61 | char *outfile = NULL, *passoutarg = NULL, *passout = NULL, *prog; |
62 | OPTION_CHOICE o; | |
26d52442 | 63 | int ret = 1, private = 0, verbose = 0, nbits; |
d02b48c6 | 64 | |
2c272447 | 65 | opt_set_unknown_name("cipher"); |
7e1b7485 RS |
66 | prog = opt_init(argc, argv, gendsa_options); |
67 | while ((o = opt_next()) != OPT_EOF) { | |
68 | switch (o) { | |
69 | case OPT_EOF: | |
70 | case OPT_ERR: | |
71 | opthelp: | |
72 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
73 | goto end; | |
74 | case OPT_HELP: | |
75 | ret = 0; | |
76 | opt_help(gendsa_options); | |
77 | goto end; | |
78 | case OPT_OUT: | |
79 | outfile = opt_arg(); | |
80 | break; | |
81 | case OPT_PASSOUT: | |
82 | passoutarg = opt_arg(); | |
83 | break; | |
84 | case OPT_ENGINE: | |
dd1abd44 | 85 | e = setup_engine(opt_arg(), 0); |
7e1b7485 | 86 | break; |
3ee1eac2 RS |
87 | case OPT_R_CASES: |
88 | if (!opt_rand(o)) | |
89 | goto end; | |
7e1b7485 | 90 | break; |
6bd4e3f2 P |
91 | case OPT_PROV_CASES: |
92 | if (!opt_provider(o)) | |
93 | goto end; | |
94 | break; | |
7e1b7485 | 95 | case OPT_CIPHER: |
03bbd346 | 96 | ciphername = opt_unknown(); |
0f113f3e | 97 | break; |
b6a07f67 PP |
98 | case OPT_VERBOSE: |
99 | verbose = 1; | |
100 | break; | |
0f113f3e | 101 | } |
0f113f3e | 102 | } |
021410ea RS |
103 | |
104 | /* One argument, the params file. */ | |
d9f07357 | 105 | if (!opt_check_rest_arg("params file")) |
7e1b7485 | 106 | goto opthelp; |
d9f07357 | 107 | argv = opt_rest(); |
03bbd346 | 108 | dsaparams = argv[0]; |
021410ea | 109 | |
3ad60309 DDO |
110 | if (!app_RAND_load()) |
111 | goto end; | |
112 | ||
d9f07357 DDO |
113 | if (!opt_cipher(ciphername, &enc)) |
114 | goto end; | |
021410ea | 115 | private = 1; |
d02b48c6 | 116 | |
7e1b7485 | 117 | if (!app_passwd(NULL, passoutarg, NULL, &passout)) { |
0f113f3e MC |
118 | BIO_printf(bio_err, "Error getting password\n"); |
119 | goto end; | |
120 | } | |
a3fe382e | 121 | |
d382e796 | 122 | pkey = load_keyparams(dsaparams, FORMAT_UNDEF, 1, "DSA", "DSA parameters"); |
d02b48c6 | 123 | |
bdd58d98 | 124 | out = bio_open_owner(outfile, FORMAT_PEM, private); |
0f113f3e | 125 | if (out == NULL) |
7e1b7485 | 126 | goto end2; |
d02b48c6 | 127 | |
ed576acd | 128 | nbits = EVP_PKEY_get_bits(pkey); |
26d52442 | 129 | if (nbits > OPENSSL_DSA_MAX_MODULUS_BITS) |
0336df2f GS |
130 | BIO_printf(bio_err, |
131 | "Warning: It is not recommended to use more than %d bit for DSA keys.\n" | |
132 | " Your key size is %d! Larger key size may behave not as expected.\n", | |
ed576acd | 133 | OPENSSL_DSA_MAX_MODULUS_BITS, EVP_PKEY_get_bits(pkey)); |
0336df2f | 134 | |
dddbbc6f P |
135 | ctx = EVP_PKEY_CTX_new(pkey, NULL); |
136 | if (ctx == NULL) { | |
137 | BIO_printf(bio_err, "unable to create PKEY context\n"); | |
138 | goto end; | |
139 | } | |
140 | EVP_PKEY_free(pkey); | |
141 | pkey = NULL; | |
142 | if (EVP_PKEY_keygen_init(ctx) <= 0) { | |
143 | BIO_printf(bio_err, "unable to set up for key generation\n"); | |
144 | goto end; | |
145 | } | |
a7e4ca5b | 146 | pkey = app_keygen(ctx, "DSA", nbits, verbose); |
d02b48c6 | 147 | |
3b061a00 | 148 | assert(private); |
dddbbc6f P |
149 | if (!PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, passout)) { |
150 | BIO_printf(bio_err, "unable to output generated key\n"); | |
0f113f3e | 151 | goto end; |
dddbbc6f | 152 | } |
0f113f3e MC |
153 | ret = 0; |
154 | end: | |
155 | if (ret != 0) | |
156 | ERR_print_errors(bio_err); | |
7e1b7485 | 157 | end2: |
ca3a82c3 RS |
158 | BIO_free(in); |
159 | BIO_free_all(out); | |
dddbbc6f P |
160 | EVP_PKEY_free(pkey); |
161 | EVP_PKEY_CTX_free(ctx); | |
606a417f | 162 | EVP_CIPHER_free(enc); |
dd1abd44 | 163 | release_engine(e); |
b548a1f1 | 164 | OPENSSL_free(passout); |
26a7d938 | 165 | return ret; |
0f113f3e | 166 | } |