Create a separate test suite for constant-time functions
This is the first step in arranging that functions from constant_time.c are
tested in test_suite_constant_time.function.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/suites/test_suite_constant_time.data b/tests/suites/test_suite_constant_time.data
new file mode 100644
index 0000000..4504aa4
--- /dev/null
+++ b/tests/suites/test_suite_constant_time.data
@@ -0,0 +1,11 @@
+# these are the numbers we'd get with an empty plaintext and truncated HMAC
+Constant-flow memcpy from offset: small
+ssl_cf_memcpy_offset:0:5:10
+
+# we could get this with 255-bytes plaintext and untruncated SHA-256
+Constant-flow memcpy from offset: medium
+ssl_cf_memcpy_offset:0:255:32
+
+# we could get this with 255-bytes plaintext and untruncated SHA-384
+Constant-flow memcpy from offset: large
+ssl_cf_memcpy_offset:100:339:48
diff --git a/tests/suites/test_suite_constant_time.function b/tests/suites/test_suite_constant_time.function
new file mode 100644
index 0000000..a3673b7
--- /dev/null
+++ b/tests/suites/test_suite_constant_time.function
@@ -0,0 +1,49 @@
+/* BEGIN_HEADER */
+/** \file test_suite_constant_time.function
+ *
+ * Functional testing of functions in the constant_time module.
+ *
+ * The tests are instrumented with #TEST_CF_SECRET and #TEST_CF_PUBLIC
+ * (see tests/include/test/constant_flow.h) so that running the tests
+ * under MSan or Valgrind will detect a non-constant-time implementation.
+ */
+
+#include <mbedtls/constant_time.h>
+#include <constant_time_internal.h>
+#include <constant_time_invasive.h>
+
+#include <test/constant_flow.h>
+/* END_HEADER */
+
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC:MBEDTLS_TEST_HOOKS */
+void ssl_cf_memcpy_offset( int offset_min, int offset_max, int len )
+{
+ unsigned char *dst = NULL;
+ unsigned char *src = NULL;
+ size_t src_len = offset_max + len;
+ size_t secret;
+
+ ASSERT_ALLOC( dst, len );
+ ASSERT_ALLOC( src, src_len );
+
+ /* Fill src in a way that we can detect if we copied the right bytes */
+ mbedtls_test_rnd_std_rand( NULL, src, src_len );
+
+ for( secret = offset_min; secret <= (size_t) offset_max; secret++ )
+ {
+ mbedtls_test_set_step( (int) secret );
+
+ TEST_CF_SECRET( &secret, sizeof( secret ) );
+ mbedtls_ct_memcpy_offset( dst, src, secret,
+ offset_min, offset_max, len );
+ TEST_CF_PUBLIC( &secret, sizeof( secret ) );
+ TEST_CF_PUBLIC( dst, len );
+
+ ASSERT_COMPARE( dst, len, src + secret, len );
+ }
+
+exit:
+ mbedtls_free( dst );
+ mbedtls_free( src );
+}
+/* END_CASE */
diff --git a/tests/suites/test_suite_ssl.data b/tests/suites/test_suite_ssl.data
index 5bd856b..bc2edd1 100644
--- a/tests/suites/test_suite_ssl.data
+++ b/tests/suites/test_suite_ssl.data
@@ -3378,18 +3378,6 @@
depends_on:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_SSL_SRV_C
ssl_serialize_session_load_buf_size:0:"":MBEDTLS_SSL_IS_SERVER:MBEDTLS_SSL_VERSION_TLS1_3
-# these are the numbers we'd get with an empty plaintext and truncated HMAC
-Constant-flow memcpy from offset: small
-ssl_cf_memcpy_offset:0:5:10
-
-# we could get this with 255-bytes plaintext and untruncated SHA-256
-Constant-flow memcpy from offset: medium
-ssl_cf_memcpy_offset:0:255:32
-
-# we could get this with 255-bytes plaintext and untruncated SHA-384
-Constant-flow memcpy from offset: large
-ssl_cf_memcpy_offset:100:339:48
-
Test configuration of groups for DHE through mbedtls_ssl_conf_curves()
conf_curve:
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 39774c6..e33b389 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -5438,39 +5438,6 @@
}
/* END_CASE */
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC:MBEDTLS_TEST_HOOKS */
-void ssl_cf_memcpy_offset( int offset_min, int offset_max, int len )
-{
- unsigned char *dst = NULL;
- unsigned char *src = NULL;
- size_t src_len = offset_max + len;
- size_t secret;
-
- ASSERT_ALLOC( dst, len );
- ASSERT_ALLOC( src, src_len );
-
- /* Fill src in a way that we can detect if we copied the right bytes */
- mbedtls_test_rnd_std_rand( NULL, src, src_len );
-
- for( secret = offset_min; secret <= (size_t) offset_max; secret++ )
- {
- mbedtls_test_set_step( (int) secret );
-
- TEST_CF_SECRET( &secret, sizeof( secret ) );
- mbedtls_ct_memcpy_offset( dst, src, secret,
- offset_min, offset_max, len );
- TEST_CF_PUBLIC( &secret, sizeof( secret ) );
- TEST_CF_PUBLIC( dst, len );
-
- ASSERT_COMPARE( dst, len, src + secret, len );
- }
-
-exit:
- mbedtls_free( dst );
- mbedtls_free( src );
-}
-/* END_CASE */
-
/* BEGIN_CASE depends_on:MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED */
void test_multiple_psks()
{
