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wolfssl/tests/unit-mcdc/test_blake2b_whitebox.c
Daniele Lacamera 7487073591 tests: WC_NO_ERR_TRACE error-code operands + uppercase literal suffixes
Two check-source-text / clang-tidy fixes on the MC/DC test files:

* Wrap error-code comparison operands in WC_NO_ERR_TRACE() (check-source-text
  check I). Code comparisons (blake2b/blake2s/hpke white-boxes and the
  logging global-queue pull check) are wrapped; the pseudo-code in doc
  comments and the WB_CHECK message strings (mcdc_fault_alloc.h, dsa/mlkem
  fault white-boxes, logging white-box) are reworded so an error code is no
  longer adjacent to == / != .

* Uppercase the integer-literal suffixes in test_sakke.c (384u -> 384U, etc.)
  for clang-tidy readability-uppercase-literal-suffix.

No behavioral change.
2026-07-31 12:56:52 +02:00

87 lines
3.6 KiB
C

/* test_blake2b_whitebox.c
*
* Copyright (C) 2006-2026 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL 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 3 of the License, or
* (at your option) any later version.
*
* wolfSSL 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
/*
* MC/DC white-box supplement for wolfcrypt/src/blake2b.c.
*
* The internal blake2b_init() (blake2b.c:125) and blake2b_init_key()
* (blake2b.c:142/144) argument guards -- "!outlen || outlen > BLAKE2B_OUTBYTES"
* and "!key || !keylen || keylen > BLAKE2B_KEYBYTES" -- are unreachable through
* the public wc_InitBlake2b* wrappers, which fully validate digestSz (word32)
* before narrowing it to a byte and calling these functions. blake2b_init* are
* also non-WOLFSSL_API (declared in blake2-int.h without export), so they must
* NOT be called from tests/api (they would fail to link against the shared
* library). This white-box #includes blake2b.c directly so the internal guards
* are reachable, and drives both short-circuit halves of every operand.
*
* Crash-safety: every call here either returns BAD_FUNC_ARG before touching
* state, or is a valid init of a stack blake2b_state, so no cleanup is needed.
*/
#include <wolfcrypt/src/blake2b.c>
#include <stdio.h>
static int wb_fail = 0;
#define WB_NOTE(msg) do { printf(" [wb] %s\n", (msg)); } while (0)
int main(void)
{
printf("blake2b.c white-box supplement\n");
#ifdef HAVE_BLAKE2B
blake2b_state bs;
byte key[BLAKE2B_KEYBYTES];
XMEMSET(&bs, 0, sizeof(bs));
XMEMSET(key, 0, sizeof(key));
/* blake2b_init(): !outlen || outlen > BLAKE2B_OUTBYTES */
if (blake2b_init(&bs, 0) != WC_NO_ERR_TRACE(BAD_FUNC_ARG)) wb_fail = 1;
if (blake2b_init(&bs, BLAKE2B_OUTBYTES + 1) != WC_NO_ERR_TRACE(BAD_FUNC_ARG)) wb_fail = 1;
if (blake2b_init(&bs, BLAKE2B_OUTBYTES) != 0) wb_fail = 1;
/* blake2b_init_key(): outlen bound, key/keylen held valid to isolate it. */
if (blake2b_init_key(&bs, 0, key, BLAKE2B_KEYBYTES) != WC_NO_ERR_TRACE(BAD_FUNC_ARG))
wb_fail = 1;
if (blake2b_init_key(&bs, BLAKE2B_OUTBYTES + 1, key, BLAKE2B_KEYBYTES)
!= WC_NO_ERR_TRACE(BAD_FUNC_ARG)) wb_fail = 1;
/* blake2b_init_key(): !key || !keylen || keylen > BLAKE2B_KEYBYTES,
* outlen held valid to isolate this decision. */
if (blake2b_init_key(&bs, BLAKE2B_OUTBYTES, NULL, BLAKE2B_KEYBYTES)
!= WC_NO_ERR_TRACE(BAD_FUNC_ARG)) wb_fail = 1;
if (blake2b_init_key(&bs, BLAKE2B_OUTBYTES, key, 0) != WC_NO_ERR_TRACE(BAD_FUNC_ARG))
wb_fail = 1;
if (blake2b_init_key(&bs, BLAKE2B_OUTBYTES, key, BLAKE2B_KEYBYTES + 1)
!= WC_NO_ERR_TRACE(BAD_FUNC_ARG)) wb_fail = 1;
/* Baseline: both decisions false on both lines. */
if (blake2b_init_key(&bs, BLAKE2B_OUTBYTES, key, BLAKE2B_KEYBYTES) != 0)
wb_fail = 1;
WB_NOTE("blake2b_init / blake2b_init_key outlen+key+keylen guards exercised");
printf("done (%s)\n", wb_fail ? "with skips" : "ok");
#else
printf(" HAVE_BLAKE2B not defined; nothing to exercise\n");
#endif
(void)wb_fail;
return 0;
}