CTR_DRBG: add mbedtls_ctr_drbg_update_ret
Deprecate mbedtls_ctr_drbg_update (which returns void) in favor of a
new function mbedtls_ctr_drbg_update_ret which reports error. The old
function is not officially marked as deprecated in this branch because
this is a stable maintenance branch.
diff --git a/tests/suites/test_suite_ctr_drbg.function b/tests/suites/test_suite_ctr_drbg.function
index d8ffebe..f17bd3b 100644
--- a/tests/suites/test_suite_ctr_drbg.function
+++ b/tests/suites/test_suite_ctr_drbg.function
@@ -177,9 +177,11 @@
}
TEST_ASSERT( last_idx == test_offset_idx );
- /* Call update with too much data (sizeof entropy > MAX(_SEED)_INPUT)
- * (just make sure it doesn't cause memory corruption) */
- mbedtls_ctr_drbg_update( &ctx, entropy, sizeof( entropy ) );
+ /* Call update with too much data (sizeof entropy > MAX(_SEED)_INPUT).
+ * Make sure it's detected as an error and doesn't cause memory
+ * corruption. */
+ TEST_ASSERT( mbedtls_ctr_drbg_update_ret(
+ &ctx, entropy, sizeof( entropy ) ) != 0 );
/* Now enable PR, so the next few calls should all reseed */
mbedtls_ctr_drbg_set_prediction_resistance( &ctx, MBEDTLS_CTR_DRBG_PR_ON );