1 /*
2 * Copyright 1999-2023 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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
8 */
9
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include <time.h>
14 #include "apps.h"
15 #include "progs.h"
16 #include <openssl/bio.h>
17 #include <openssl/conf.h>
18 #include <openssl/err.h>
19 #include <openssl/evp.h>
20 #include <openssl/x509.h>
21 #include <openssl/pem.h>
22
23 typedef enum OPTION_choice {
24 OPT_COMMON,
25 OPT_NOOUT,
26 OPT_PUBKEY,
27 OPT_VERIFY,
28 OPT_IN,
29 OPT_OUT,
30 OPT_ENGINE,
31 OPT_KEY,
32 OPT_CHALLENGE,
33 OPT_PASSIN,
34 OPT_SPKAC,
35 OPT_SPKSECT,
36 OPT_KEYFORM,
37 OPT_DIGEST,
38 OPT_PROV_ENUM
39 } OPTION_CHOICE;
40
41 const OPTIONS spkac_options[] = {
42 OPT_SECTION("General"),
43 { "help", OPT_HELP, '-', "Display this summary" },
44 { "spksect", OPT_SPKSECT, 's',
45 "Specify the name of an SPKAC-dedicated section of configuration" },
46 #ifndef OPENSSL_NO_ENGINE
47 { "engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device" },
48 #endif
49
50 OPT_SECTION("Input"),
51 { "in", OPT_IN, '<', "Input file" },
52 { "key", OPT_KEY, '<', "Create SPKAC using private key" },
53 { "keyform", OPT_KEYFORM, 'f', "Private key file format (ENGINE, other values ignored)" },
54 { "passin", OPT_PASSIN, 's', "Input file pass phrase source" },
55 { "challenge", OPT_CHALLENGE, 's', "Challenge string" },
56 { "spkac", OPT_SPKAC, 's', "Alternative SPKAC name" },
57
58 OPT_SECTION("Output"),
59 { "digest", OPT_DIGEST, 's', "Sign new SPKAC with the specified digest (default: MD5)" },
60 { "out", OPT_OUT, '>', "Output file" },
61 { "noout", OPT_NOOUT, '-', "Don't print SPKAC" },
62 { "pubkey", OPT_PUBKEY, '-', "Output public key" },
63 { "verify", OPT_VERIFY, '-', "Verify SPKAC signature" },
64
65 OPT_PROV_OPTIONS,
66 { NULL }
67 };
68
spkac_main(int argc,char ** argv)69 int spkac_main(int argc, char **argv)
70 {
71 BIO *out = NULL;
72 CONF *conf = NULL;
73 ENGINE *e = NULL;
74 EVP_PKEY *pkey = NULL;
75 NETSCAPE_SPKI *spki = NULL;
76 char *challenge = NULL, *keyfile = NULL;
77 char *infile = NULL, *outfile = NULL, *passinarg = NULL, *passin = NULL;
78 char *spkstr = NULL, *prog;
79 const char *spkac = "SPKAC", *spksect = "default";
80 const char *digest = "MD5";
81 EVP_MD *md = NULL;
82 int i, ret = 1, verify = 0, noout = 0, pubkey = 0;
83 int keyformat = FORMAT_UNDEF;
84 OPTION_CHOICE o;
85
86 prog = opt_init(argc, argv, spkac_options);
87 while ((o = opt_next()) != OPT_EOF) {
88 switch (o) {
89 case OPT_EOF:
90 case OPT_ERR:
91 opthelp:
92 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
93 goto end;
94 case OPT_HELP:
95 opt_help(spkac_options);
96 ret = 0;
97 goto end;
98 case OPT_IN:
99 infile = opt_arg();
100 break;
101 case OPT_OUT:
102 outfile = opt_arg();
103 break;
104 case OPT_NOOUT:
105 noout = 1;
106 break;
107 case OPT_PUBKEY:
108 pubkey = 1;
109 break;
110 case OPT_VERIFY:
111 verify = 1;
112 break;
113 case OPT_PASSIN:
114 passinarg = opt_arg();
115 break;
116 case OPT_KEY:
117 keyfile = opt_arg();
118 break;
119 case OPT_KEYFORM:
120 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
121 goto opthelp;
122 break;
123 case OPT_CHALLENGE:
124 challenge = opt_arg();
125 break;
126 case OPT_SPKAC:
127 spkac = opt_arg();
128 break;
129 case OPT_SPKSECT:
130 spksect = opt_arg();
131 break;
132 case OPT_DIGEST:
133 digest = opt_arg();
134 break;
135 case OPT_ENGINE:
136 e = setup_engine(opt_arg(), 0);
137 break;
138 case OPT_PROV_CASES:
139 if (!opt_provider(o))
140 goto end;
141 break;
142 }
143 }
144
145 /* No extra arguments. */
146 if (!opt_check_rest_arg(NULL))
147 goto opthelp;
148
149 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
150 BIO_printf(bio_err, "Error getting password\n");
151 goto end;
152 }
153
154 if (keyfile != NULL) {
155 if (!opt_md(digest, &md))
156 goto end;
157
158 pkey = load_key(strcmp(keyfile, "-") ? keyfile : NULL,
159 keyformat, 1, passin, e, "private key");
160 if (pkey == NULL)
161 goto end;
162 spki = NETSCAPE_SPKI_new();
163 if (spki == NULL)
164 goto end;
165 if (challenge != NULL
166 && !ASN1_STRING_set(spki->spkac->challenge,
167 challenge, (int)strlen(challenge)))
168 goto end;
169 if (!NETSCAPE_SPKI_set_pubkey(spki, pkey)) {
170 BIO_printf(bio_err, "Error setting public key\n");
171 goto end;
172 }
173 i = NETSCAPE_SPKI_sign(spki, pkey, md);
174 if (i <= 0) {
175 BIO_printf(bio_err, "Error signing SPKAC\n");
176 goto end;
177 }
178 spkstr = NETSCAPE_SPKI_b64_encode(spki);
179 if (spkstr == NULL)
180 goto end;
181
182 out = bio_open_default(outfile, 'w', FORMAT_TEXT);
183 if (out == NULL) {
184 OPENSSL_free(spkstr);
185 goto end;
186 }
187 BIO_printf(out, "SPKAC=%s\n", spkstr);
188 OPENSSL_free(spkstr);
189 ret = 0;
190 goto end;
191 }
192
193 if ((conf = app_load_config(infile)) == NULL)
194 goto end;
195
196 spkstr = NCONF_get_string(conf, spksect, spkac);
197
198 if (spkstr == NULL) {
199 BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n", spkac);
200 ERR_print_errors(bio_err);
201 goto end;
202 }
203
204 spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);
205
206 if (spki == NULL) {
207 BIO_printf(bio_err, "Error loading SPKAC\n");
208 ERR_print_errors(bio_err);
209 goto end;
210 }
211
212 out = bio_open_default(outfile, 'w', FORMAT_TEXT);
213 if (out == NULL)
214 goto end;
215
216 if (!noout)
217 NETSCAPE_SPKI_print(out, spki);
218 pkey = NETSCAPE_SPKI_get_pubkey(spki);
219 if (verify) {
220 i = NETSCAPE_SPKI_verify(spki, pkey);
221 if (i > 0) {
222 BIO_printf(bio_err, "Signature OK\n");
223 } else {
224 BIO_printf(bio_err, "Signature Failure\n");
225 ERR_print_errors(bio_err);
226 goto end;
227 }
228 }
229 if (pubkey)
230 PEM_write_bio_PUBKEY(out, pkey);
231
232 ret = 0;
233
234 end:
235 EVP_MD_free(md);
236 NCONF_free(conf);
237 NETSCAPE_SPKI_free(spki);
238 BIO_free_all(out);
239 EVP_PKEY_free(pkey);
240 release_engine(e);
241 OPENSSL_free(passin);
242 return ret;
243 }
244