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- /*
- Copyright (c) 2010 Jeffrey Burdges
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE.
- */
- /**
- * @file src/util/test_crypt_kdf.c
- * @brief Testcases for KDF mod n
- * @author Jeffrey Burdges <burdges@gnunet.org>
- */
- #include <gcrypt.h>
- #include "platform.h"
- #include "gnunet_crypto_lib.h"
- int
- main ()
- {
- #define RND_BLK_SIZE 4096
- unsigned char rnd_blk[RND_BLK_SIZE];
- int i;
- gcry_mpi_t r, n;
- GNUNET_log_setup ("test-crypto-kdf", "WARNING", NULL);
- GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
- rnd_blk,
- RND_BLK_SIZE);
- /* test full domain hash size */
- for (i = 0; i < 100; i++)
- {
- gcry_mpi_scan (&n,
- GCRYMPI_FMT_USG,
- rnd_blk, RND_BLK_SIZE,
- NULL);
- GNUNET_CRYPTO_kdf_mod_mpi (&r, n,
- "", 0,
- "", 0,
- "");
- GNUNET_assert (0 > gcry_mpi_cmp (r, n));
- /* Is it worth checking that it's not too small? */
- /* GNUNET_assert (gcry_mpi_get_nbits(r) > 3*RND_BLK_SIZE/4); */
- /* This test necessarily randomly fails with probability 2^(3 - RND_BLK_SIZE/4) */
- gcry_mpi_release (n);
- gcry_mpi_release (r);
- }
- return 0;
- }
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