diff options
Diffstat (limited to 'src/util/crypto_bug.c')
-rw-r--r-- | src/util/crypto_bug.c | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/src/util/crypto_bug.c b/src/util/crypto_bug.c deleted file mode 100644 index 1c3e9225e..000000000 --- a/src/util/crypto_bug.c +++ /dev/null | |||
@@ -1,79 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2018 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published | ||
7 | by the Free Software Foundation; either version 3, or (at your | ||
8 | option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with GNUnet; see the file COPYING. If not, write to the | ||
17 | Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | ||
18 | Boston, MA 02110-1301, USA. | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file util/crypto_bug.c | ||
23 | * @brief work around unidentified public key cryptography bug | ||
24 | * @author Christian Grothoff | ||
25 | */ | ||
26 | |||
27 | /** | ||
28 | * Enable work-around. Will cause code to call #check_eddsa_key() to | ||
29 | * see if we have a bad key, and if so, create a new one. | ||
30 | */ | ||
31 | #define CRYPTO_BUG 0 | ||
32 | |||
33 | |||
34 | #if CRYPTO_BUG | ||
35 | /** | ||
36 | * Check if ECDH works with @a priv_dsa and this version | ||
37 | * of libgcrypt. | ||
38 | * | ||
39 | * @param priv_dsa key to check | ||
40 | * @return #GNUNET_OK if key passes | ||
41 | */ | ||
42 | static int | ||
43 | check_eddsa_key (const struct GNUNET_CRYPTO_EddsaPrivateKey *priv_dsa) | ||
44 | { | ||
45 | struct GNUNET_CRYPTO_EcdhePrivateKey *priv_ecdh; | ||
46 | struct GNUNET_CRYPTO_EddsaPublicKey id1; | ||
47 | struct GNUNET_CRYPTO_EcdhePublicKey id2; | ||
48 | struct GNUNET_HashCode dh[2]; | ||
49 | |||
50 | GNUNET_CRYPTO_eddsa_key_get_public (priv_dsa, | ||
51 | &id1); | ||
52 | for (unsigned int j=0;j<4;j++) | ||
53 | { | ||
54 | priv_ecdh = GNUNET_CRYPTO_ecdhe_key_create (); | ||
55 | /* Extract public keys */ | ||
56 | GNUNET_CRYPTO_ecdhe_key_get_public (priv_ecdh, | ||
57 | &id2); | ||
58 | /* Do ECDH */ | ||
59 | GNUNET_assert (GNUNET_OK == | ||
60 | GNUNET_CRYPTO_eddsa_ecdh (priv_dsa, | ||
61 | &id2, | ||
62 | &dh[0])); | ||
63 | GNUNET_assert (GNUNET_OK == | ||
64 | GNUNET_CRYPTO_ecdh_eddsa (priv_ecdh, | ||
65 | &id1, | ||
66 | &dh[1])); | ||
67 | /* Check that both DH results are equal. */ | ||
68 | if (0 != memcmp (&dh[0], | ||
69 | &dh[1], | ||
70 | sizeof (struct GNUNET_HashCode))) | ||
71 | { | ||
72 | GNUNET_break (0); /* bad EdDSA key! */ | ||
73 | return GNUNET_SYSERR; | ||
74 | } | ||
75 | GNUNET_free (priv_ecdh); | ||
76 | } | ||
77 | return GNUNET_OK; | ||
78 | } | ||
79 | #endif | ||