1 /* t-encrypt-mixed.c - Regression test.
2 * Copyright (C) 2016 by Bundesamt für Sicherheit in der Informationstechnik
3 * Software engineering by Intevation GmbH
4 *
5 * This file is part of GPGME.
6 *
7 * GPGME is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * GPGME is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this program; if not, see <https://gnu.org/licenses/>.
19 * SPDX-License-Identifier: LGPL-2.1-or-later
20 */
21
22 #ifdef HAVE_CONFIG_H
23 #include <config.h>
24 #endif
25
26 #include <stdlib.h>
27 #include <stdio.h>
28 #include <string.h>
29
30 #include <gpgme.h>
31
32 #include "t-support.h"
33
34 /* Tests mixed symmetric and asymmetric decryption. Verifies
35 that an encrypted message can be decrypted without the
36 secret key but that the recipient is also set correctly. */
37 int
main(void)38 main (void)
39 {
40 gpgme_ctx_t ctx;
41 gpgme_error_t err;
42 gpgme_data_t in, out;
43 gpgme_key_t key[2] = { NULL, NULL };
44 gpgme_encrypt_result_t result;
45 gpgme_decrypt_result_t dec_result;
46 gpgme_recipient_t recipient;
47 const char *text = "Hallo Leute\n";
48 char *text2;
49 size_t len;
50
51 init_gpgme (GPGME_PROTOCOL_OpenPGP);
52
53 err = gpgme_new (&ctx);
54 fail_if_err (err);
55 gpgme_set_armor (ctx, 1);
56
57 err = gpgme_data_new_from_mem (&in, text, strlen (text), 0);
58 fail_if_err (err);
59
60 err = gpgme_data_new (&out);
61 fail_if_err (err);
62
63 gpgme_set_passphrase_cb (ctx, passphrase_cb, NULL);
64
65 /* A recipient for which we don't have a secret key */
66 err = gpgme_get_key (ctx, "D695676BDCEDCC2CDD6152BCFE180B1DA9E3B0B2",
67 &key[0], 0);
68 fail_if_err (err);
69
70 err = gpgme_op_encrypt (ctx, key,
71 GPGME_ENCRYPT_ALWAYS_TRUST | GPGME_ENCRYPT_SYMMETRIC,
72 in, out);
73 fail_if_err (err);
74 result = gpgme_op_encrypt_result (ctx);
75 if (result->invalid_recipients)
76 {
77 fprintf (stderr, "Invalid recipient encountered: %s\n",
78 result->invalid_recipients->fpr);
79 exit (1);
80 }
81
82 print_data (out);
83
84 /* Now try to decrypt */
85 gpgme_data_seek (out, 0, SEEK_SET);
86
87 gpgme_data_release (in);
88 err = gpgme_data_new (&in);
89 fail_if_err (err);
90
91 err = gpgme_op_decrypt (ctx, out, in);
92 fail_if_err (err);
93
94 fputs ("Begin Result Decryption:\n", stdout);
95 print_data (in);
96 fputs ("End Result.\n", stdout);
97
98 dec_result = gpgme_op_decrypt_result (ctx);
99 if (dec_result->unsupported_algorithm || dec_result->wrong_key_usage)
100 {
101 fprintf (stderr, "%s:%d: Decryption failed\n", __FILE__, __LINE__);
102 exit (1);
103 }
104
105 text2 = gpgme_data_release_and_get_mem (in, &len);
106 if (strncmp (text, text2, len))
107 {
108 fprintf (stderr, "%s:%d: Wrong plaintext\n", __FILE__, __LINE__);
109 exit (1);
110 }
111
112 recipient = dec_result->recipients;
113 if (!recipient || recipient->next)
114 {
115 fprintf (stderr, "%s:%d: Invalid recipients \n", __FILE__, __LINE__);
116 exit (1);
117 }
118
119 if (strncmp (recipient->keyid, "5381EA4EE29BA37F", 16))
120 {
121 fprintf (stderr, "%s:%d: Not encrypted to recipient's subkey \n", __FILE__, __LINE__);
122 exit (1);
123 }
124
125 gpgme_key_unref (key[0]);
126 free (text2);
127 gpgme_data_release (out);
128 gpgme_release (ctx);
129 return 0;
130 }
131