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846e33c7 RS |
1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
d02b48c6 | 3 | * |
846e33c7 RS |
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 | |
d02b48c6 RE |
8 | */ |
9 | ||
effaf4de RS |
10 | #include <openssl/opensslconf.h> |
11 | #ifdef OPENSSL_NO_DSA | |
12 | NON_EMPTY_TRANSLATION_UNIT | |
13 | #else | |
14 | ||
0f113f3e MC |
15 | # include <stdio.h> |
16 | # include <string.h> | |
17 | # include <sys/types.h> | |
18 | # include <sys/stat.h> | |
19 | # include "apps.h" | |
20 | # include <openssl/bio.h> | |
21 | # include <openssl/err.h> | |
22 | # include <openssl/bn.h> | |
23 | # include <openssl/dsa.h> | |
24 | # include <openssl/x509.h> | |
25 | # include <openssl/pem.h> | |
d02b48c6 | 26 | |
7e1b7485 RS |
27 | typedef enum OPTION_choice { |
28 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, | |
29 | OPT_OUT, OPT_PASSOUT, OPT_ENGINE, OPT_RAND, OPT_CIPHER | |
30 | } OPTION_CHOICE; | |
31 | ||
32 | OPTIONS gendsa_options[] = { | |
33 | {OPT_HELP_STR, 1, '-', "Usage: %s [args] dsaparam-file\n"}, | |
34 | {OPT_HELP_STR, 1, '-', "Valid options are:\n"}, | |
35 | {"help", OPT_HELP, '-', "Display this summary"}, | |
36 | {"out", OPT_OUT, '>', "Output the key to the specified file"}, | |
37 | {"passout", OPT_PASSOUT, 's'}, | |
38 | {"rand", OPT_RAND, 's', | |
39 | "Load the file(s) into the random number generator"}, | |
9c3bcfa0 | 40 | {"", OPT_CIPHER, '-', "Encrypt the output with any supported cipher"}, |
7e1b7485 RS |
41 | # ifndef OPENSSL_NO_ENGINE |
42 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, | |
43 | # endif | |
7e1b7485 RS |
44 | {NULL} |
45 | }; | |
667ac4ec | 46 | |
7e1b7485 | 47 | int gendsa_main(int argc, char **argv) |
0f113f3e | 48 | { |
0f113f3e | 49 | BIO *out = NULL, *in = NULL; |
7e1b7485 | 50 | DSA *dsa = NULL; |
0f113f3e | 51 | const EVP_CIPHER *enc = NULL; |
333b070e | 52 | char *inrand = NULL, *dsaparams = NULL; |
7e1b7485 RS |
53 | char *outfile = NULL, *passoutarg = NULL, *passout = NULL, *prog; |
54 | OPTION_CHOICE o; | |
3b061a00 | 55 | int ret = 1, private = 0; |
2ac6115d | 56 | const BIGNUM *p = NULL; |
d02b48c6 | 57 | |
7e1b7485 RS |
58 | prog = opt_init(argc, argv, gendsa_options); |
59 | while ((o = opt_next()) != OPT_EOF) { | |
60 | switch (o) { | |
61 | case OPT_EOF: | |
62 | case OPT_ERR: | |
63 | opthelp: | |
64 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
65 | goto end; | |
66 | case OPT_HELP: | |
67 | ret = 0; | |
68 | opt_help(gendsa_options); | |
69 | goto end; | |
70 | case OPT_OUT: | |
71 | outfile = opt_arg(); | |
72 | break; | |
73 | case OPT_PASSOUT: | |
74 | passoutarg = opt_arg(); | |
75 | break; | |
76 | case OPT_ENGINE: | |
333b070e | 77 | (void)setup_engine(opt_arg(), 0); |
7e1b7485 RS |
78 | break; |
79 | case OPT_RAND: | |
80 | inrand = opt_arg(); | |
81 | break; | |
82 | case OPT_CIPHER: | |
83 | if (!opt_cipher(opt_unknown(), &enc)) | |
84 | goto end; | |
0f113f3e | 85 | break; |
0f113f3e | 86 | } |
0f113f3e | 87 | } |
7e1b7485 RS |
88 | argc = opt_num_rest(); |
89 | argv = opt_rest(); | |
3b061a00 | 90 | private = 1; |
7e1b7485 RS |
91 | |
92 | if (argc != 1) | |
93 | goto opthelp; | |
94 | dsaparams = *argv; | |
d02b48c6 | 95 | |
7e1b7485 | 96 | if (!app_passwd(NULL, passoutarg, NULL, &passout)) { |
0f113f3e MC |
97 | BIO_printf(bio_err, "Error getting password\n"); |
98 | goto end; | |
99 | } | |
a3fe382e | 100 | |
bdd58d98 | 101 | in = bio_open_default(dsaparams, 'r', FORMAT_PEM); |
7e1b7485 RS |
102 | if (in == NULL) |
103 | goto end2; | |
a3fe382e | 104 | |
0f113f3e MC |
105 | if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) { |
106 | BIO_printf(bio_err, "unable to load DSA parameter file\n"); | |
107 | goto end; | |
108 | } | |
109 | BIO_free(in); | |
110 | in = NULL; | |
d02b48c6 | 111 | |
bdd58d98 | 112 | out = bio_open_owner(outfile, FORMAT_PEM, private); |
0f113f3e | 113 | if (out == NULL) |
7e1b7485 | 114 | goto end2; |
d02b48c6 | 115 | |
7e1b7485 | 116 | if (!app_RAND_load_file(NULL, 1) && inrand == NULL) { |
0f113f3e MC |
117 | BIO_printf(bio_err, |
118 | "warning, not much extra random data, consider using the -rand option\n"); | |
119 | } | |
120 | if (inrand != NULL) | |
121 | BIO_printf(bio_err, "%ld semi-random bytes loaded\n", | |
122 | app_RAND_load_files(inrand)); | |
d02b48c6 | 123 | |
6e9fa57c MC |
124 | DSA_get0_pqg(dsa, &p, NULL, NULL); |
125 | BIO_printf(bio_err, "Generating DSA key, %d bits\n", BN_num_bits(p)); | |
0f113f3e MC |
126 | if (!DSA_generate_key(dsa)) |
127 | goto end; | |
d02b48c6 | 128 | |
7e1b7485 | 129 | app_RAND_write_file(NULL); |
d02b48c6 | 130 | |
3b061a00 | 131 | assert(private); |
0f113f3e MC |
132 | if (!PEM_write_bio_DSAPrivateKey(out, dsa, enc, NULL, 0, NULL, passout)) |
133 | goto end; | |
134 | ret = 0; | |
135 | end: | |
136 | if (ret != 0) | |
137 | ERR_print_errors(bio_err); | |
7e1b7485 | 138 | end2: |
ca3a82c3 RS |
139 | BIO_free(in); |
140 | BIO_free_all(out); | |
d6407083 | 141 | DSA_free(dsa); |
b548a1f1 | 142 | OPENSSL_free(passout); |
7e1b7485 | 143 | return (ret); |
0f113f3e | 144 | } |
f5d7a031 | 145 | #endif |