+++ /dev/null
-/*
- This file is part of GNUnet.
- Copyright (C) 2018 GNUnet e.V.
-
- GNUnet is free software: you can redistribute it and/or modify it
- under the terms of the GNU Affero General Public License as published
- by the Free Software Foundation, either version 3 of the License,
- or (at your option) any later version.
-
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file util/crypto_bug.c
- * @brief work around unidentified public key cryptography bug
- * @author Christian Grothoff
- */
-
-/**
- * Enable work-around. Will cause code to call #check_eddsa_key() to
- * see if we have a bad key, and if so, create a new one.
- */
-#define CRYPTO_BUG 0
-
-
-#if CRYPTO_BUG
-/**
- * Check if ECDH works with @a priv_dsa and this version
- * of libgcrypt.
- *
- * @param priv_dsa key to check
- * @return #GNUNET_OK if key passes
- */
-static int
-check_eddsa_key (const struct GNUNET_CRYPTO_EddsaPrivateKey *priv_dsa)
-{
- struct GNUNET_CRYPTO_EcdhePrivateKey *priv_ecdh;
- struct GNUNET_CRYPTO_EddsaPublicKey id1;
- struct GNUNET_CRYPTO_EcdhePublicKey id2;
- struct GNUNET_HashCode dh[2];
-
- GNUNET_CRYPTO_eddsa_key_get_public (priv_dsa,
- &id1);
- for (unsigned int j=0;j<4;j++)
- {
- priv_ecdh = GNUNET_CRYPTO_ecdhe_key_create ();
- /* Extract public keys */
- GNUNET_CRYPTO_ecdhe_key_get_public (priv_ecdh,
- &id2);
- /* Do ECDH */
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CRYPTO_eddsa_ecdh (priv_dsa,
- &id2,
- &dh[0]));
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CRYPTO_ecdh_eddsa (priv_ecdh,
- &id1,
- &dh[1]));
- /* Check that both DH results are equal. */
- if (0 != memcmp (&dh[0],
- &dh[1],
- sizeof (struct GNUNET_HashCode)))
- {
- GNUNET_break (0); /* bad EdDSA key! */
- return GNUNET_SYSERR;
- }
- GNUNET_free (priv_ecdh);
- }
- return GNUNET_OK;
-}
-#endif