csrng_kat_test.c

// Copyright lowRISC contributors (OpenTitan project).
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
 
#include "sw/device/lib/base/macros.h"
#include "sw/device/lib/base/mmio.h"
#include "sw/device/lib/base/status.h"
#include "sw/device/lib/dif/dif_csrng.h"
#include "sw/device/lib/runtime/log.h"
#include "sw/device/lib/testing/csrng_testutils.h"
#include "sw/device/lib/testing/test_framework/check.h"
#include "sw/device/lib/testing/test_framework/ottf_main.h"
 
OTTF_DEFINE_TEST_CONFIG();
 
status_t test_ctr_drbg_ctr0(const dif_csrng_t *csrng) {
  TRY(csrng_testutils_cmd_ready_wait(csrng));
  TRY(dif_csrng_uninstantiate(csrng));
  TRY(csrng_testutils_fips_instantiate_kat(csrng, /*fail_expected=*/false));
  TRY(csrng_testutils_fips_generate_kat(csrng));
  return OK_STATUS();
}
 
bool test_main(void) {
  dif_csrng_t csrng;
  dt_csrng_t kCsrngDt = (dt_csrng_t)0;
  static_assert(kDtCsrngCount == 1, "This test expects exactly one CSRNG");
  CHECK_DIF_OK(dif_csrng_init_from_dt(kCsrngDt, &csrng));
  CHECK_DIF_OK(dif_csrng_configure(&csrng));
 
  CHECK_STATUS_OK(test_ctr_drbg_ctr0(&csrng));
 
  return true;
}