unit-tests: added bliss_sampler test

diff --git a/src/libstrongswan/plugins/bliss/Makefile.am b/src/libstrongswan/plugins/bliss/Makefile.am
index d2010de3aabb38423550cbcadb89495808466373..3db481933c285c2453cd2c9a18f8105a8e3a2ecd 100644 (file)
--- a/src/libstrongswan/plugins/bliss/Makefile.am
+++ b/src/libstrongswan/plugins/bliss/Makefile.am
@@ -32,6 +32,7 @@ check_PROGRAMS = $(TESTS)
 bliss_tests_SOURCES = \
        suites/test_bliss_fft.c \
        suites/test_bliss_bitpacker.c \
+       suites/test_bliss_sampler.c \
        suites/test_bliss_sign.c \
        bliss_fft_params.c \
        bliss_fft.c \

diff --git a/src/libstrongswan/plugins/bliss/bliss_tests.h b/src/libstrongswan/plugins/bliss/bliss_tests.h
index d857b3a5768cb3bcec3d99ecfb803b0bfe3f40ab..67b0cdd2342be341f08fd4d0df2336d025868ee2 100644 (file)
--- a/src/libstrongswan/plugins/bliss/bliss_tests.h
+++ b/src/libstrongswan/plugins/bliss/bliss_tests.h
@@ -15,5 +15,6 @@
 
 TEST_SUITE(bliss_fft_suite_create)
 TEST_SUITE(bliss_bitpacker_suite_create)
+TEST_SUITE(bliss_sampler_suite_create)
 TEST_SUITE(bliss_sign_suite_create)
 

diff --git a/src/libstrongswan/plugins/bliss/suites/test_bliss_sampler.c b/src/libstrongswan/plugins/bliss/suites/test_bliss_sampler.c
new file mode 100644 (file)
index 0000000..1bd1266
--- /dev/null
+++ b/src/libstrongswan/plugins/bliss/suites/test_bliss_sampler.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2014 Andreas Steffen
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program 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 General Public License
+ * for more details.
+ */
+
+#include "test_suite.h"
+
+#include <bliss_sampler.h>
+
+static u_int key_size[] = { 1, 3, 4};
+
+START_TEST(test_bliss_sampler_gaussian)
+{
+       bliss_sampler_t *sampler;
+       bliss_param_set_t *set;
+       int i, k, count;
+       uint32_t hist[8], sign[3];
+       int32_t z;
+       hash_algorithm_t alg;
+       size_t seed_len;
+       chunk_t seed;
+
+       set = bliss_param_set_get_by_id(key_size[_i]);
+       alg = HASH_SHA256;
+       seed_len = 32;
+       count = 10000000;
+
+       seed = chunk_alloc(seed_len);
+       memset(seed.ptr, 0xcc, seed_len);
+
+       for (k = 0; k < 3; k++)
+       {
+               sign[k] = 0;
+       }
+       for (k = 0; k < 8; k++)
+       {
+               hist[k] = 0;
+       }
+
+       sampler = bliss_sampler_create(alg, seed, set);
+       for (i = 0; i < count; i++)
+       {
+               ck_assert(sampler->gaussian(sampler, &z));
+               if (z == 0)
+               {
+                       sign[1]++;
+                       hist[0]++;
+               }
+               else if (z > 0)
+               {
+                       sign[2]++;
+                       hist[z/256]++;
+               }
+               else
+               {
+                       sign[0]++;
+                       hist[(-z)/256]++;
+               }
+       }
+       sampler->destroy(sampler);
+       free(seed.ptr);
+
+       DBG1(DBG_LIB, "histogram");     
+       for (k = 0; k < 8; k++)
+       {
+               DBG1(DBG_LIB, "%d %7d", k, hist[k]);
+       }
+       DBG1(DBG_LIB, "- %7d", sign[0]);
+       DBG1(DBG_LIB, "0 %7d", sign[1]);
+       DBG1(DBG_LIB, "+ %7d", sign[2]);
+}
+END_TEST
+
+Suite *bliss_sampler_suite_create()
+{
+       Suite *s;
+       TCase *tc;
+
+       s = suite_create("bliss_sampler");
+
+       tc = tcase_create("sampler_gaussian");
+       tcase_set_timeout(tc, 10);
+       tcase_add_loop_test(tc, test_bliss_sampler_gaussian, 0, countof(key_size));
+       suite_add_tcase(s, tc);
+
+       return s;
+}