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/*
* Copyright (c) 2021-2024, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*
*/
#include "tfm_plat_provisioning.h"
#include "cmsis_compiler.h"
#include "tfm_plat_otp.h"
#include "tfm_attest_hal.h"
#include "psa/crypto.h"
#include "bootutil/bootutil_log.h"
#include <string.h>
#define ASSEMBLY_AND_TEST_PROV_DATA_MAGIC 0xC0DEFEED
#ifdef MCUBOOT_SIGN_EC384
#define PUB_KEY_HASH_SIZE (48)
#else
#define PUB_KEY_HASH_SIZE (32)
#endif
__PACKED_STRUCT bl2_assembly_and_test_provisioning_data_t {
uint32_t magic;
uint8_t bl2_rotpk_0[PUB_KEY_HASH_SIZE];
uint8_t bl2_rotpk_1[PUB_KEY_HASH_SIZE];
#if (MCUBOOT_IMAGE_NUMBER > 2)
uint8_t bl2_rotpk_2[PUB_KEY_HASH_SIZE];
#endif
#if (MCUBOOT_IMAGE_NUMBER > 3)
uint8_t bl2_rotpk_3[PUB_KEY_HASH_SIZE];
#endif
#ifdef PLATFORM_PSA_ADAC_SECURE_DEBUG
uint8_t secure_debug_pk[32];
#endif /* PLATFORM_PSA_ADAC_SECURE_DEBUG */
};
#ifdef TFM_DUMMY_PROVISIONING
/* List of BL2 Root of Trust public key hashes */
#if defined(MCUBOOT_SIGN_RSA)
#if (MCUBOOT_SIGN_RSA_LEN == 2048)
/* SHA-256 hashes of RSA-2048 public keys (in PKCS#1 format)
* DATA_KIND_0: hash of PK(bl2/ext/mcuboot/root-RSA-2048.pem)
* DATA_KIND_1: hash of PK(bl2/ext/mcuboot/root-RSA-2048_1.pem)
*/
#define ASSEMBLY_AND_TEST_PROV_DATA_KIND_0 { \
0xfc, 0x57, 0x01, 0xdc, 0x61, 0x35, 0xe1, 0x32, \
0x38, 0x47, 0xbd, 0xc4, 0x0f, 0x04, 0xd2, 0xe5, \
0xbe, 0xe5, 0x83, 0x3b, 0x23, 0xc2, 0x9f, 0x93, \
0x59, 0x3d, 0x00, 0x01, 0x8c, 0xfa, 0x99, 0x94, \
}
#define ASSEMBLY_AND_TEST_PROV_DATA_KIND_1 { \
0xe1, 0x80, 0x15, 0x99, 0x3d, 0x6d, 0x27, 0x60, \
0xb4, 0x99, 0x27, 0x4b, 0xae, 0xf2, 0x64, 0xb8, \
0x3a, 0xf2, 0x29, 0xe9, 0xa7, 0x85, 0xf3, 0xd5, \
0xbf, 0x00, 0xb9, 0xd3, 0x2c, 0x1f, 0x03, 0x96, \
}
#elif (MCUBOOT_SIGN_RSA_LEN == 3072)
/* SHA-256 hashes of RSA-3072 public keys (in PKCS#1 format)
* DATA_KIND_0: hash of PK(bl2/ext/mcuboot/root-RSA-3072.pem)
* DATA_KIND_1: hash of PK(bl2/ext/mcuboot/root-RSA-3072_1.pem)
*/
#define ASSEMBLY_AND_TEST_PROV_DATA_KIND_0 { \
0xbf, 0xe6, 0xd8, 0x6f, 0x88, 0x26, 0xf4, 0xff, \
0x97, 0xfb, 0x96, 0xc4, 0xe6, 0xfb, 0xc4, 0x99, \
0x3e, 0x46, 0x19, 0xfc, 0x56, 0x5d, 0xa2, 0x6a, \
0xdf, 0x34, 0xc3, 0x29, 0x48, 0x9a, 0xdc, 0x38, \
}
#define ASSEMBLY_AND_TEST_PROV_DATA_KIND_1 { \
0xb3, 0x60, 0xca, 0xf5, 0xc9, 0x8c, 0x6b, 0x94, \
0x2a, 0x48, 0x82, 0xfa, 0x9d, 0x48, 0x23, 0xef, \
0xb1, 0x66, 0xa9, 0xef, 0x6a, 0x6e, 0x4a, 0xa3, \
0x7c, 0x19, 0x19, 0xed, 0x1f, 0xcc, 0xc0, 0x49, \
}
#endif /* MCUBOOT_SIGN_RSA_LEN */
#elif defined(MCUBOOT_SIGN_EC256)
/* SHA-256 hashes of EC-P256 public keys
* (in SubjectPublicKeyInfo format, see RFC5480)
* DATA_KIND_0: hash of PK(bl2/ext/mcuboot/root-EC-P256.pem)
* DATA_KIND_1: hash of PK(bl2/ext/mcuboot/root-EC-P256_1.pem)
*/
#define ASSEMBLY_AND_TEST_PROV_DATA_KIND_0 { \
0xe3, 0x04, 0x66, 0xf6, 0xb8, 0x47, 0x0c, 0x1f, \
0x29, 0x07, 0x0b, 0x17, 0xf1, 0xe2, 0xd3, 0xe9, \
0x4d, 0x44, 0x5e, 0x3f, 0x60, 0x80, 0x87, 0xfd, \
0xc7, 0x11, 0xe4, 0x38, 0x2b, 0xb5, 0x38, 0xb6, \
}
#define ASSEMBLY_AND_TEST_PROV_DATA_KIND_1 { \
0x82, 0xa5, 0xb4, 0x43, 0x59, 0x48, 0x53, 0xd4, \
0xbf, 0x0f, 0xdd, 0x89, 0xa9, 0x14, 0xa5, 0xdc, \
0x16, 0xf8, 0x67, 0x54, 0x82, 0x07, 0xd7, 0x07, \
0x7e, 0x74, 0xd8, 0x0c, 0x06, 0x3e, 0xfd, 0xa9, \
}
#elif defined(MCUBOOT_SIGN_EC384)
/* SHA-384 hashes of EC-P256 public keys
* (in SubjectPublicKeyInfo format, see RFC5480)
* DATA_KIND_0: hash of PK(bl2/ext/mcuboot/root-EC-P384.pem)
* DATA_KIND_1: hash of PK(bl2/ext/mcuboot/root-EC-P384_1.pem)
*/
#define ASSEMBLY_AND_TEST_PROV_DATA_KIND_0 { \
0x85, 0xb7, 0xbd, 0x5f, 0x5d, 0xff, 0x9a, 0x03, \
0xa9, 0x99, 0x27, 0xad, 0xaf, 0x6c, 0xa6, 0xfe, \
0xbd, 0xe8, 0x22, 0xc1, 0xa4, 0x80, 0x92, 0x83, \
0x24, 0xa8, 0xe6, 0x03, 0x23, 0x71, 0x5c, 0x57, \
0x79, 0x46, 0x1c, 0x49, 0x6a, 0x95, 0xae, 0xe8, \
0xc4, 0xf9, 0x0b, 0x99, 0x77, 0x9f, 0x84, 0x8a, \
}
#define ASSEMBLY_AND_TEST_PROV_DATA_KIND_1 { \
0xae, 0x13, 0xb7, 0x1d, 0xae, 0x49, 0xa7, 0xb8, \
0x9d, 0x4d, 0x8e, 0xe5, 0x09, 0x5c, 0xb8, 0xd4, \
0x5a, 0x32, 0xbd, 0x9c, 0x7d, 0x50, 0x1c, 0xd3, \
0xb8, 0xf8, 0x6c, 0xbc, 0x8b, 0x41, 0x43, 0x9b, \
0x1b, 0x22, 0x5c, 0xc3, 0x6a, 0x5b, 0xa8, 0x08, \
0x1d, 0xf0, 0x71, 0xe0, 0xcb, 0xbc, 0x61, 0x92, \
}
#endif /* MCUBOOT_SIGN_RSA */
static const struct bl2_assembly_and_test_provisioning_data_t bl2_assembly_and_test_prov_data = {
ASSEMBLY_AND_TEST_PROV_DATA_MAGIC,
#if defined(MCUBOOT_SIGN_RSA)
#if (MCUBOOT_SIGN_RSA_LEN == 2048)
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 0 */
ASSEMBLY_AND_TEST_PROV_DATA_KIND_1, /* bl2 rotpk 1 */
#if (MCUBOOT_IMAGE_NUMBER > 2)
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 2 */
#endif
#if (MCUBOOT_IMAGE_NUMBER > 3)
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 3 */
#endif
#elif (MCUBOOT_SIGN_RSA_LEN == 3072)
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 0 */
ASSEMBLY_AND_TEST_PROV_DATA_KIND_1, /* bl2 rotpk 1 */
#if (MCUBOOT_IMAGE_NUMBER > 2)
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 2 */
#endif
#if (MCUBOOT_IMAGE_NUMBER > 3)
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 3 */
#endif
#endif /* MCUBOOT_SIGN_RSA_LEN */
#elif defined(MCUBOOT_SIGN_EC256)
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 0 */
ASSEMBLY_AND_TEST_PROV_DATA_KIND_1, /* bl2 rotpk 1 */
#if MCUBOOT_IMAGE_NUMBER > 2
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 2 */
#endif
#if MCUBOOT_IMAGE_NUMBER > 3
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 3 */
#endif
#elif defined(MCUBOOT_SIGN_EC384)
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 0 */
ASSEMBLY_AND_TEST_PROV_DATA_KIND_1, /* bl2 rotpk 1 */
#if MCUBOOT_IMAGE_NUMBER > 2
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 2 */
#endif
#if MCUBOOT_IMAGE_NUMBER > 3
ASSEMBLY_AND_TEST_PROV_DATA_KIND_0, /* bl2 rotpk 3 */
#endif
#else
#error "No public key available for given signing algorithm."
#endif /* MCUBOOT_SIGN_RSA */
#ifdef PLATFORM_PSA_ADAC_SECURE_DEBUG
{
0xf4, 0x0c, 0x8f, 0xbf, 0x12, 0xdb, 0x78, 0x2a,
0xfd, 0xf4, 0x75, 0x96, 0x6a, 0x06, 0x82, 0x36,
0xe0, 0x32, 0xab, 0x80, 0xd1, 0xb7, 0xf1, 0xbc,
0x9f, 0xe7, 0xd8, 0x7a, 0x88, 0xcb, 0x26, 0xd0,
},
#endif /* PLATFORM_PSA_ADAC_SECURE_DEBUG */
};
#else
static const struct bl2_assembly_and_test_provisioning_data_t bl2_assembly_and_test_prov_data;
#endif /* TFM_DUMMY_PROVISIONING */
void tfm_plat_provisioning_check_for_dummy_keys(void)
{
uint64_t iak_start;
tfm_plat_otp_read(PLAT_OTP_ID_IAK, sizeof(iak_start), (uint8_t*)&iak_start);
if(iak_start == 0xA4906F6DB254B4A9) {
BOOT_LOG_WRN("%s%s%s%s",
"\033[1;31m",
"This device was provisioned with dummy keys. ",
"This device is \033[1;1mNOT SECURE",
"\033[0m");
}
memset(&iak_start, 0, sizeof(iak_start));
}
int tfm_plat_provisioning_is_required(void)
{
enum tfm_plat_err_t err;
enum plat_otp_lcs_t lcs;
err = tfm_plat_otp_read(PLAT_OTP_ID_LCS, sizeof(lcs), (uint8_t*)&lcs);
if (err != TFM_PLAT_ERR_SUCCESS) {
return err;
}
return lcs == PLAT_OTP_LCS_ASSEMBLY_AND_TEST
|| lcs == PLAT_OTP_LCS_PSA_ROT_PROVISIONING;
}
enum tfm_plat_err_t provision_assembly_and_test(void)
{
enum tfm_plat_err_t err;
err = tfm_plat_otp_write(PLAT_OTP_ID_BL2_ROTPK_0,
sizeof(bl2_assembly_and_test_prov_data.bl2_rotpk_0),
bl2_assembly_and_test_prov_data.bl2_rotpk_0);
if (err != TFM_PLAT_ERR_SUCCESS && err != TFM_PLAT_ERR_UNSUPPORTED) {
return err;
}
err = tfm_plat_otp_write(PLAT_OTP_ID_BL2_ROTPK_1,
sizeof(bl2_assembly_and_test_prov_data.bl2_rotpk_1),
bl2_assembly_and_test_prov_data.bl2_rotpk_1);
if (err != TFM_PLAT_ERR_SUCCESS && err != TFM_PLAT_ERR_UNSUPPORTED) {
return err;
}
#if (MCUBOOT_IMAGE_NUMBER > 2)
err = tfm_plat_otp_write(PLAT_OTP_ID_BL2_ROTPK_2,
sizeof(bl2_assembly_and_test_prov_data.bl2_rotpk_2),
bl2_assembly_and_test_prov_data.bl2_rotpk_2);
if (err != TFM_PLAT_ERR_SUCCESS && err != TFM_PLAT_ERR_UNSUPPORTED) {
return err;
}
#endif /* MCUBOOT_IMAGE_NUMBER > 2 */
#if (MCUBOOT_IMAGE_NUMBER > 3)
err = tfm_plat_otp_write(PLAT_OTP_ID_BL2_ROTPK_3,
sizeof(bl2_assembly_and_test_prov_data.bl2_rotpk_3),
bl2_assembly_and_test_prov_data.bl2_rotpk_3);
if (err != TFM_PLAT_ERR_SUCCESS && err != TFM_PLAT_ERR_UNSUPPORTED) {
return err;
}
#endif /* MCUBOOT_IMAGE_NUMBER > 3 */
#ifdef PLATFORM_PSA_ADAC_SECURE_DEBUG
err = tfm_plat_otp_write(PLAT_OTP_ID_SECURE_DEBUG_PK,
sizeof(bl2_assembly_and_test_prov_data.secure_debug_pk),
bl2_assembly_and_test_prov_data.secure_debug_pk);
if (err != TFM_PLAT_ERR_SUCCESS && err != TFM_PLAT_ERR_UNSUPPORTED) {
return err;
}
#endif /* PLATFORM_PSA_ADAC_SECURE_DEBUG */
return err;
}
enum tfm_plat_err_t tfm_plat_provisioning_perform(void)
{
enum tfm_plat_err_t err;
enum plat_otp_lcs_t lcs;
err = tfm_plat_otp_read(PLAT_OTP_ID_LCS, sizeof(lcs), (uint8_t*)&lcs);
if (err != TFM_PLAT_ERR_SUCCESS) {
return err;
}
BOOT_LOG_INF("Beginning BL2 provisioning");
#ifdef TFM_DUMMY_PROVISIONING
BOOT_LOG_WRN("%s%s%s%s",
"\033[1;31m",
"TFM_DUMMY_PROVISIONING is not suitable for production! ",
"This device is \033[1;1mNOT SECURE",
"\033[0m");
#endif /* TFM_DUMMY_PROVISIONING */
if (lcs == PLAT_OTP_LCS_ASSEMBLY_AND_TEST) {
if (bl2_assembly_and_test_prov_data.magic != ASSEMBLY_AND_TEST_PROV_DATA_MAGIC) {
BOOT_LOG_ERR("No valid ASSEMBLY_AND_TEST provisioning data found");
return TFM_PLAT_ERR_INVALID_INPUT;
}
err = provision_assembly_and_test();
if (err != TFM_PLAT_ERR_SUCCESS) {
return err;
}
}
return TFM_PLAT_ERR_SUCCESS;
}
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