mirror of https://github.com/wolfSSL/wolfBoot.git
Added unit test for encrypted external flash
Daniele Lacamera
parent
51e6a1a28c
commit
0b06efd347
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@ -0,0 +1,33 @@
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name: Unit tests
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on:
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push:
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branches: [master]
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pull_request:
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branches: [master]
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jobs:
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footprint_test:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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with:
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submodules: true
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- name: make clean
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run: |
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make keysclean && make -C tools/keytools clean && rm -f include/target.h
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- name: Build wolfboot and test footprint
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run: |
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make -C tools/unit-tests
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- name: Run manifest header parser unit tests
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run: |
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./tools/unit-tests/unit-parser
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- name: Run encrypted ext_flash unit tests
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run: |
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./tools/unit-tests/unit-extflash
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@ -23,7 +23,7 @@
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#ifndef ENCRYPT_H_INCLUDED
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#define ENCRYPT_H_INCLUDED
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#ifdef __WOLFBOOT
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#if defined(__WOLFBOOT) || defined(UNIT_TEST)
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#include <stdint.h>
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#include <wolfssl/wolfcrypt/settings.h>
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#include <wolfssl/wolfcrypt/sha256.h>
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@ -67,5 +67,5 @@ void aes_set_iv(uint8_t *nonce, uint32_t address);
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int ext_flash_encrypt_write(uintptr_t address, const uint8_t *data, int len);
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int ext_flash_decrypt_read(uintptr_t address, uint8_t *data, int len);
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#endif /* __WOLFBOOT */
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#endif /* __WOLFBOOT || UNIT_TEST */
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#endif /* ENCRYPT_H_INCLUDED */
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@ -579,7 +579,7 @@ uint16_t wolfBoot_find_header(uint8_t *haystack, uint16_t type, uint8_t **ptr);
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#include "hal.h"
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#if defined(EXT_ENCRYPTED) && defined(__WOLFBOOT)
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#if defined(EXT_ENCRYPTED) && (defined(__WOLFBOOT) || defined(UNIT_TEST))
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#include "encrypt.h"
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#define ext_flash_check_write ext_flash_encrypt_write
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#define ext_flash_check_read ext_flash_decrypt_read
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@ -44,7 +44,7 @@ static int encrypt_initialized = 0;
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static uint8_t encrypt_iv_nonce[ENCRYPT_NONCE_SIZE];
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#if defined(__WOLFBOOT)
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#include "encrypt.h"
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#else
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#elif !defined(XMEMSET)
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#include <string.h>
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#define XMEMSET memset
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#define XMEMCPY memcpy
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@ -63,7 +63,7 @@ static uint8_t encrypt_iv_nonce[ENCRYPT_NONCE_SIZE];
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#define ENCRYPT_TMP_SECRET_OFFSET (WOLFBOOT_PARTITION_SIZE - (TRAILER_SKIP))
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#endif /* EXT_FLASH && EXT_ENCRYPTED */
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#if !defined(__WOLFBOOT)
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#if !defined(__WOLFBOOT) && !defined(UNIT_TEST)
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#define XMEMSET memset
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#define XMEMCPY memcpy
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#define XMEMCMP memcmp
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@ -89,7 +89,7 @@ static uint32_t ext_cache;
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#endif
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#ifdef __WOLFBOOT
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#if defined(__WOLFBOOT) || defined (UNIT_TEST)
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/* Inline use of ByteReverseWord32 */
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#define WOLFSSL_MISC_INCLUDED
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#include <wolfcrypt/src/misc.c>
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@ -969,6 +969,7 @@ int RAMFUNCTION wolfBoot_set_encrypt_key(const uint8_t *key,
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return 0;
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}
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#ifndef UNIT_TEST
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int RAMFUNCTION wolfBoot_get_encrypt_key(uint8_t *k, uint8_t *nonce)
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{
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#if defined(MMU)
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@ -987,6 +988,7 @@ int RAMFUNCTION wolfBoot_get_encrypt_key(uint8_t *k, uint8_t *nonce)
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#endif
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return 0;
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}
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#endif
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int RAMFUNCTION wolfBoot_erase_encrypt_key(void)
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{
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@ -1008,7 +1010,7 @@ int RAMFUNCTION wolfBoot_erase_encrypt_key(void)
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return 0;
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}
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#ifdef __WOLFBOOT
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#if defined(__WOLFBOOT) || defined(UNIT_TEST)
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#ifdef ENCRYPT_WITH_CHACHA
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@ -1048,7 +1050,7 @@ Aes aes_dec, aes_enc;
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int aes_init(void)
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{
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#if defined(MMU)
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#if defined(MMU) || defined(UNIT_TEST)
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uint8_t *key = ENCRYPT_KEY;
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#else
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uint8_t *key = (uint8_t *)(WOLFBOOT_PARTITION_BOOT_ADDRESS +
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@ -5,16 +5,24 @@ ifneq ($(UNAME_S),Darwin)
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LDFLAGS+=-lrt -lsubunit
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endif
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CFLAGS=-I../../src -I../../include
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CFLAGS=-I. -I../../src -I../../include -I../../lib/wolfssl
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CFLAGS+=-g -ggdb
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all: unit-parser
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all: unit-parser unit-extflash
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../../include/target.h: FORCE
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cp -f target.h $@
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unit-parser: unit-parser.o
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unit-parser: ../../include/target.h unit-parser.o
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gcc -o $@ $^ $(CFLAGS) $(LDFLAGS)
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unit-extflash: ../../include/target.h unit-extflash.o
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gcc -o $@ $^ $(CFLAGS) $(LDFLAGS)
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%.o:%.c
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gcc -c -o $@ $^ $(CFLAGS)
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clean:
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rm -f unit-parser unit-parser.o
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rm -f unit-parser unit-extflash *.o
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FORCE:
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@ -0,0 +1,71 @@
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/* target.h
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*
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* User configurable build-time options for bootloader and application offsets
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*
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* target.h is automatically generated using the template in target.h.in by running
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* "make config".
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*
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* Copyright (C) 2021 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#ifndef H_TARGETS_TARGET_
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#define H_TARGETS_TARGET_
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#ifndef WOLFBOOT_NO_PARTITIONS
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# define WOLFBOOT_FIXED_PARTITIONS
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#endif
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#define WOLFBOOT_SECTOR_SIZE 0x400
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#ifdef WOLFBOOT_FIXED_PARTITIONS
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#ifdef PULL_LINKER_DEFINES
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#include <stdint.h>
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/* linker script variables */
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extern const uint32_t _wolfboot_partition_boot_address[];
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extern const uint32_t _wolfboot_partition_size[];
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extern const uint32_t _wolfboot_partition_update_address[];
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extern const uint32_t _wolfboot_partition_swap_address[];
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/* create plain integers from linker script variables */
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static const uint32_t WOLFBOOT_PARTITION_BOOT_ADDRESS = (uint32_t)_wolfboot_partition_boot_address;
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static const uint32_t WOLFBOOT_PARTITION_SIZE = (uint32_t)_wolfboot_partition_size;
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static const uint32_t WOLFBOOT_PARTITION_UPDATE_ADDRESS = (uint32_t)_wolfboot_partition_update_address;
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static const uint32_t WOLFBOOT_PARTITION_SWAP_ADDRESS = (uint32_t)_wolfboot_partition_swap_address;
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#else
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/* use values provided on input template parsing */
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#define WOLFBOOT_PARTITION_BOOT_ADDRESS 0x08000000
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#define WOLFBOOT_PARTITION_SIZE 0x8000
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#define WOLFBOOT_PARTITION_UPDATE_ADDRESS 0x00000000
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#define WOLFBOOT_PARTITION_SWAP_ADDRESS 0x00008000
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#endif
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#define WOLFBOOT_DTS_BOOT_ADDRESS 0x30000
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#define WOLFBOOT_DTS_UPDATE_ADDRESS 0x50000
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#endif /* WOLFBOOT_FIXED_PARTITIONS */
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/* Load address in RAM for staged OS (update_ram only) */
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#define WOLFBOOT_LOAD_ADDRESS 0x200000
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#define WOLFBOOT_LOAD_DTS_ADDRESS 0x400000
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#endif /* !H_TARGETS_TARGET_ */
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@ -0,0 +1,287 @@
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/* unit-extflash.c
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*
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* Unit test for parser functions in libwolfboot.c
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*
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*
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* Copyright (C) 2023 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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/* Option to enable sign tool debugging */
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/* Must also define DEBUG_WOLFSSL in user_settings.h */
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#define FLASH_SIZE (33 * 1024)
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#define WOLFBOOT_HASH_SHA256
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#define IMAGE_HEADER_SIZE 256
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#define EXT_ENCRYPTED
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#define EXT_FLASH
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#define ENCRYPT_WITH_AES256
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#define WOLFSSL_AES_COUNTER
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#define WOLFSSL_AES_DIRECT
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#define WOLFSSL_AES_256
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#define WC_NO_HARDEN
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#define WOLFSSL_USER_SETTINGS
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#define ENCRYPT_KEY "123456789abcdef0123456789abcdef0123456789abcdef"
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#define UNIT_TEST
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#include <stdio.h>
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#include <check.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "user_settings.h"
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#include "wolfcrypt/src/aes.c"
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#include "libwolfboot.c"
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/* Mocks */
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static int locked = 0;
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void hal_init(void)
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{
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}
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int hal_flash_write(uint32_t address, const uint8_t *data, int len)
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{
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return 0;
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}
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int hal_flash_erase(uint32_t address, int len)
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{
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return 0;
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}
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void hal_flash_unlock(void)
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{
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//fail_unless(locked, "Double unlock detected\n");
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locked--;
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}
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void hal_flash_lock(void)
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{
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//fail_if(locked, "Double lock detected\n");
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locked++;
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}
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void hal_prepare_boot(void)
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{
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}
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/* Emulation of external flash with a static buffer of 32KB (update) + 1KB (swap) */
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uint8_t flash[FLASH_SIZE];
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/* Mocks for ext_flash_read, ext_flash_write, and ext_flash_erase functions */
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int ext_flash_read(uintptr_t address, uint8_t *data, int len) {
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printf("Called ext_flash_read %p %p %d\n", address, data, len);
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/* Check that the read address and size are within the bounds of the flash memory */
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ck_assert_int_le(address + len, FLASH_SIZE);
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/* Copy the data from the flash memory to the output buffer */
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memcpy(data, &flash[address], len);
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return len;
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}
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int ext_flash_write(uintptr_t address, const uint8_t *data, int len) {
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printf("Called ext_flash_write %p %p %d\n", address, data, len);
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/* Check that the write address and size are within the bounds of the flash memory */
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ck_assert_int_le(address + len, FLASH_SIZE);
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/* Copy the data from the input buffer to the flash memory */
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memcpy(&flash[address], data, len);
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return 0;
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}
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int ext_flash_erase(uintptr_t address, int len) {
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/* Check that the erase address and size are within the bounds of the flash memory */
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ck_assert_int_le(address + len, FLASH_SIZE);
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/* Erase the flash memory by setting each byte to 0xFF, WOLFBOOT_SECTOR_SIZE bytes at a time */
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uint32_t i;
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for (i = address; i < address + len; i += WOLFBOOT_SECTOR_SIZE) {
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memset(&flash[i], 0xFF, WOLFBOOT_SECTOR_SIZE);
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}
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return 0;
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}
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/* Matches all keys:
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* - chacha (32 + 12)
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* - aes128 (16 + 16)
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* - aes256 (32 + 16)
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*/
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/* Longest key possible: AES256 (32 key + 16 IV = 48) */
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static const char enc_key[] = "0123456789abcdef0123456789abcdef"
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"0123456789abcdef";
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static uint8_t test_buffer[512] = {
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'W', 'O', 'L', 'F', 0x00, 0x00, 0x01, 0x00,
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0x01, 0x00, 0x04, 0x00, 0x0d, 0x0c, 0x0b, 0x0a,
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0xFF, 0xFF, 0xFF, 0xFF, 0x02, 0x00, 0x08, 0x00,
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0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
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0xFF, 0xFF, 0xFF, 0xFF, 0x03, 0x00, 0x20, 0x00,
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
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0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, /*<-- end of options */
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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/* End HDR */
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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};
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int wolfBoot_get_encrypt_key(uint8_t *key, uint8_t *nonce)
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{
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printf("Called get_encrypt_key mock\r\n");
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memcpy(key, enc_key, ENCRYPT_KEY_SIZE);
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memcpy(key, enc_key + ENCRYPT_KEY_SIZE, ENCRYPT_NONCE_SIZE);
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return 0;
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}
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START_TEST(test_ext_flash_operations) {
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uint32_t address = 0x1000;
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uint32_t size = 512;
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uint8_t data[2 * WOLFBOOT_SECTOR_SIZE];
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uint8_t empty_sector[WOLFBOOT_SECTOR_SIZE];
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int rres, wres, eres;
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memset(empty_sector, 0xFF, WOLFBOOT_SECTOR_SIZE);
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/* Write data to the flash memory */
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wres = ext_flash_write(address, test_buffer, size);
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ck_assert_int_eq(wres, 0);
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/* Read data from the flash memory */
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rres = ext_flash_read(address, data, size);
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ck_assert_int_eq(rres, size);
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/* Check that the data read from the flash memory matches the data that was written */
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ck_assert_mem_eq(data, test_buffer, size);
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/* Erase the first sector */
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eres = ext_flash_erase(address, WOLFBOOT_SECTOR_SIZE);
|
||||
ck_assert_int_eq(eres, 0);
|
||||
|
||||
/* Read first sector from the flash memory */
|
||||
rres = ext_flash_read(address, data, WOLFBOOT_SECTOR_SIZE);
|
||||
ck_assert_int_eq(rres, WOLFBOOT_SECTOR_SIZE);
|
||||
|
||||
|
||||
/* Check that the first sector read is empty */
|
||||
ck_assert_mem_eq(data, empty_sector, WOLFBOOT_SECTOR_SIZE);
|
||||
}
|
||||
END_TEST
|
||||
|
||||
START_TEST(test_ext_enc_flash_operations) {
|
||||
uint32_t address = 0x1000;
|
||||
uint32_t size = 512;
|
||||
uint8_t data[2 * WOLFBOOT_SECTOR_SIZE];
|
||||
uint8_t dataw[2 * WOLFBOOT_SECTOR_SIZE];
|
||||
int rres, wres, eres;
|
||||
|
||||
|
||||
/* Write data to the flash memory */
|
||||
memcpy(dataw, test_buffer, size);
|
||||
wres = ext_flash_check_write(address, dataw, size);
|
||||
ck_assert_int_eq(wres, 0);
|
||||
|
||||
|
||||
/* Read data from the flash memory */
|
||||
rres = ext_flash_check_read(address, data, size);
|
||||
ck_assert_int_eq(rres, size);
|
||||
|
||||
/* Check that the data read from the flash memory matches the data that was written */
|
||||
ck_assert_mem_eq(data, test_buffer, size);
|
||||
|
||||
address = 0x07FF0;
|
||||
size = 16;
|
||||
|
||||
/* Write data to the flash memory */
|
||||
memcpy(dataw, test_buffer, size);
|
||||
wres = ext_flash_check_write(address, dataw, size);
|
||||
ck_assert_int_eq(wres, 0);
|
||||
|
||||
|
||||
/* Read data from the flash memory */
|
||||
rres = ext_flash_check_read(address, data, size);
|
||||
ck_assert_int_eq(rres, size);
|
||||
|
||||
/* Check that the data read from the flash memory matches the data that was written */
|
||||
ck_assert_mem_eq(&flash[address], test_buffer, size);
|
||||
|
||||
}
|
||||
END_TEST
|
||||
|
||||
|
||||
/* End Mocks */
|
||||
|
||||
Suite *wolfboot_suite(void)
|
||||
{
|
||||
|
||||
/* Suite initialization */
|
||||
Suite *s = suite_create("wolfBoot");
|
||||
|
||||
/* Test cases */
|
||||
TCase *ext_flash_operations = tcase_create("External flash operations: API");
|
||||
TCase *ext_enc_flash_operations = tcase_create("External encrypted flash operations");
|
||||
|
||||
/* Set parameters + add to suite */
|
||||
tcase_add_test(ext_flash_operations, test_ext_flash_operations);
|
||||
tcase_add_test(ext_enc_flash_operations, test_ext_enc_flash_operations);
|
||||
|
||||
tcase_set_timeout(ext_flash_operations, 20);
|
||||
tcase_set_timeout(ext_enc_flash_operations, 20);
|
||||
suite_add_tcase(s, ext_flash_operations);
|
||||
suite_add_tcase(s, ext_enc_flash_operations);
|
||||
|
||||
return s;
|
||||
}
|
||||
|
||||
|
||||
int main(void)
|
||||
{
|
||||
int fails;
|
||||
Suite *s = wolfboot_suite();
|
||||
SRunner *sr = srunner_create(s);
|
||||
srunner_run_all(sr, CK_NORMAL);
|
||||
fails = srunner_ntests_failed(sr);
|
||||
srunner_free(sr);
|
||||
return fails;
|
||||
}
|
||||
|
|
@ -27,6 +27,7 @@
|
|||
#define WOLFBOOT_HASH_SHA256
|
||||
#define IMAGE_HEADER_SIZE 256
|
||||
#define UNIT_TEST
|
||||
#define WC_NO_HARDEN
|
||||
#include <stdio.h>
|
||||
#include "libwolfboot.c"
|
||||
#include <check.h>
|
||||
|
|
|
|||
Loading…
Reference in New Issue