mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-15 09:04:17 +00:00
82cb2c1ad9
To make software license auditing simpler, use SPDX[0] license identifiers instead of duplicating the license text in every file. NOTE: Files that have been imported by FreeBSD have not been modified. [0]: https://spdx.org/ Change-Id: I80a00e1f641b8cc075ca5a95b10607ed9ed8761a Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
595 lines
13 KiB
C
595 lines
13 KiB
C
/*
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* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <auth_mod.h>
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#include <platform_def.h>
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#include <platform_oid.h>
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#include <stddef.h>
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/*
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* Maximum key and hash sizes (in DER format)
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*/
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#define PK_DER_LEN 294
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#define HASH_DER_LEN 51
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/*
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* The platform must allocate buffers to store the authentication parameters
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* extracted from the certificates. In this case, because of the way the CoT is
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* established, we can reuse some of the buffers on different stages
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*/
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static unsigned char tb_fw_hash_buf[HASH_DER_LEN];
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static unsigned char scp_fw_hash_buf[HASH_DER_LEN];
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static unsigned char soc_fw_hash_buf[HASH_DER_LEN];
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static unsigned char tos_fw_hash_buf[HASH_DER_LEN];
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static unsigned char nt_world_bl_hash_buf[HASH_DER_LEN];
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static unsigned char trusted_world_pk_buf[PK_DER_LEN];
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static unsigned char non_trusted_world_pk_buf[PK_DER_LEN];
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static unsigned char content_pk_buf[PK_DER_LEN];
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/*
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* Parameter type descriptors
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*/
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static auth_param_type_desc_t trusted_nv_ctr = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_NV_CTR, TRUSTED_FW_NVCOUNTER_OID);
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static auth_param_type_desc_t non_trusted_nv_ctr = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_NV_CTR, NON_TRUSTED_FW_NVCOUNTER_OID);
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static auth_param_type_desc_t subject_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, 0);
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static auth_param_type_desc_t sig = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_SIG, 0);
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static auth_param_type_desc_t sig_alg = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_SIG_ALG, 0);
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static auth_param_type_desc_t raw_data = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_RAW_DATA, 0);
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static auth_param_type_desc_t trusted_world_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, TRUSTED_WORLD_PK_OID);
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static auth_param_type_desc_t non_trusted_world_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, NON_TRUSTED_WORLD_PK_OID);
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static auth_param_type_desc_t scp_fw_content_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, SCP_FW_CONTENT_CERT_PK_OID);
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static auth_param_type_desc_t soc_fw_content_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, SOC_FW_CONTENT_CERT_PK_OID);
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static auth_param_type_desc_t tos_fw_content_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, TRUSTED_OS_FW_CONTENT_CERT_PK_OID);
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static auth_param_type_desc_t nt_fw_content_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, NON_TRUSTED_FW_CONTENT_CERT_PK_OID);
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static auth_param_type_desc_t tb_fw_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, TRUSTED_BOOT_FW_HASH_OID);
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static auth_param_type_desc_t scp_fw_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, SCP_FW_HASH_OID);
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static auth_param_type_desc_t soc_fw_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, SOC_AP_FW_HASH_OID);
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static auth_param_type_desc_t tos_fw_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, TRUSTED_OS_FW_HASH_OID);
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static auth_param_type_desc_t nt_world_bl_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, NON_TRUSTED_WORLD_BOOTLOADER_HASH_OID);
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static auth_param_type_desc_t scp_bl2u_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, SCP_FWU_CFG_HASH_OID);
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static auth_param_type_desc_t bl2u_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, AP_FWU_CFG_HASH_OID);
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static auth_param_type_desc_t ns_bl2u_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, FWU_HASH_OID);
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/*
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* TBBR Chain of trust definition
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*/
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static const auth_img_desc_t cot_desc[] = {
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/*
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* BL2
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*/
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[TRUSTED_BOOT_FW_CERT_ID] = {
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.img_id = TRUSTED_BOOT_FW_CERT_ID,
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.img_type = IMG_CERT,
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.parent = NULL,
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &subject_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &trusted_nv_ctr,
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.plat_nv_ctr = &trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &tb_fw_hash,
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.data = {
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.ptr = (void *)tb_fw_hash_buf,
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.len = (unsigned int)HASH_DER_LEN
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}
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}
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}
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},
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[BL2_IMAGE_ID] = {
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.img_id = BL2_IMAGE_ID,
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.img_type = IMG_RAW,
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.parent = &cot_desc[TRUSTED_BOOT_FW_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_HASH,
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.param.hash = {
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.data = &raw_data,
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.hash = &tb_fw_hash,
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}
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}
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}
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},
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/*
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* Trusted key certificate
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*/
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[TRUSTED_KEY_CERT_ID] = {
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.img_id = TRUSTED_KEY_CERT_ID,
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.img_type = IMG_CERT,
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.parent = NULL,
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &subject_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &trusted_nv_ctr,
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.plat_nv_ctr = &trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &trusted_world_pk,
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.data = {
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.ptr = (void *)trusted_world_pk_buf,
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.len = (unsigned int)PK_DER_LEN
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}
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},
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[1] = {
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.type_desc = &non_trusted_world_pk,
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.data = {
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.ptr = (void *)non_trusted_world_pk_buf,
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.len = (unsigned int)PK_DER_LEN
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}
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}
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}
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},
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/*
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* SCP Firmware
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*/
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[SCP_FW_KEY_CERT_ID] = {
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.img_id = SCP_FW_KEY_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[TRUSTED_KEY_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &trusted_world_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &trusted_nv_ctr,
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.plat_nv_ctr = &trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &scp_fw_content_pk,
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.data = {
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.ptr = (void *)content_pk_buf,
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.len = (unsigned int)PK_DER_LEN
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}
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}
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}
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},
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[SCP_FW_CONTENT_CERT_ID] = {
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.img_id = SCP_FW_CONTENT_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[SCP_FW_KEY_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &scp_fw_content_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &trusted_nv_ctr,
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.plat_nv_ctr = &trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &scp_fw_hash,
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.data = {
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.ptr = (void *)scp_fw_hash_buf,
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.len = (unsigned int)HASH_DER_LEN
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}
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}
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}
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},
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[SCP_BL2_IMAGE_ID] = {
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.img_id = SCP_BL2_IMAGE_ID,
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.img_type = IMG_RAW,
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.parent = &cot_desc[SCP_FW_CONTENT_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_HASH,
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.param.hash = {
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.data = &raw_data,
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.hash = &scp_fw_hash,
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}
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}
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}
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},
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/*
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* SoC Firmware
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*/
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[SOC_FW_KEY_CERT_ID] = {
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.img_id = SOC_FW_KEY_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[TRUSTED_KEY_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &trusted_world_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &trusted_nv_ctr,
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.plat_nv_ctr = &trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &soc_fw_content_pk,
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.data = {
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.ptr = (void *)content_pk_buf,
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.len = (unsigned int)PK_DER_LEN
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}
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}
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}
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},
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[SOC_FW_CONTENT_CERT_ID] = {
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.img_id = SOC_FW_CONTENT_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[SOC_FW_KEY_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &soc_fw_content_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &trusted_nv_ctr,
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.plat_nv_ctr = &trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &soc_fw_hash,
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.data = {
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.ptr = (void *)soc_fw_hash_buf,
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.len = (unsigned int)HASH_DER_LEN
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}
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}
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}
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},
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[BL31_IMAGE_ID] = {
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.img_id = BL31_IMAGE_ID,
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.img_type = IMG_RAW,
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.parent = &cot_desc[SOC_FW_CONTENT_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_HASH,
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.param.hash = {
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.data = &raw_data,
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.hash = &soc_fw_hash,
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}
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}
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}
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},
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/*
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* Trusted OS Firmware
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*/
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[TRUSTED_OS_FW_KEY_CERT_ID] = {
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.img_id = TRUSTED_OS_FW_KEY_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[TRUSTED_KEY_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &trusted_world_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &trusted_nv_ctr,
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.plat_nv_ctr = &trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &tos_fw_content_pk,
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.data = {
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.ptr = (void *)content_pk_buf,
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.len = (unsigned int)PK_DER_LEN
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}
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}
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}
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},
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[TRUSTED_OS_FW_CONTENT_CERT_ID] = {
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.img_id = TRUSTED_OS_FW_CONTENT_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[TRUSTED_OS_FW_KEY_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &tos_fw_content_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &trusted_nv_ctr,
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.plat_nv_ctr = &trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &tos_fw_hash,
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.data = {
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.ptr = (void *)tos_fw_hash_buf,
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.len = (unsigned int)HASH_DER_LEN
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}
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}
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}
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},
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[BL32_IMAGE_ID] = {
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.img_id = BL32_IMAGE_ID,
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.img_type = IMG_RAW,
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.parent = &cot_desc[TRUSTED_OS_FW_CONTENT_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_HASH,
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.param.hash = {
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.data = &raw_data,
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.hash = &tos_fw_hash,
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}
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}
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}
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},
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/*
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* Non-Trusted Firmware
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*/
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[NON_TRUSTED_FW_KEY_CERT_ID] = {
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.img_id = NON_TRUSTED_FW_KEY_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[TRUSTED_KEY_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &non_trusted_world_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &non_trusted_nv_ctr,
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.plat_nv_ctr = &non_trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &nt_fw_content_pk,
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.data = {
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.ptr = (void *)content_pk_buf,
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.len = (unsigned int)PK_DER_LEN
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}
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}
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}
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},
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[NON_TRUSTED_FW_CONTENT_CERT_ID] = {
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.img_id = NON_TRUSTED_FW_CONTENT_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[NON_TRUSTED_FW_KEY_CERT_ID],
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.img_auth_methods = {
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[0] = {
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.type = AUTH_METHOD_SIG,
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.param.sig = {
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.pk = &nt_fw_content_pk,
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.sig = &sig,
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.alg = &sig_alg,
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.data = &raw_data,
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}
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},
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[1] = {
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.type = AUTH_METHOD_NV_CTR,
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.param.nv_ctr = {
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.cert_nv_ctr = &non_trusted_nv_ctr,
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.plat_nv_ctr = &non_trusted_nv_ctr
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}
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}
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},
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.authenticated_data = {
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[0] = {
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.type_desc = &nt_world_bl_hash,
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.data = {
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.ptr = (void *)nt_world_bl_hash_buf,
|
|
.len = (unsigned int)HASH_DER_LEN
|
|
}
|
|
}
|
|
}
|
|
},
|
|
[BL33_IMAGE_ID] = {
|
|
.img_id = BL33_IMAGE_ID,
|
|
.img_type = IMG_RAW,
|
|
.parent = &cot_desc[NON_TRUSTED_FW_CONTENT_CERT_ID],
|
|
.img_auth_methods = {
|
|
[0] = {
|
|
.type = AUTH_METHOD_HASH,
|
|
.param.hash = {
|
|
.data = &raw_data,
|
|
.hash = &nt_world_bl_hash,
|
|
}
|
|
}
|
|
}
|
|
},
|
|
/*
|
|
* FWU auth descriptor.
|
|
*/
|
|
[FWU_CERT_ID] = {
|
|
.img_id = FWU_CERT_ID,
|
|
.img_type = IMG_CERT,
|
|
.parent = NULL,
|
|
.img_auth_methods = {
|
|
[0] = {
|
|
.type = AUTH_METHOD_SIG,
|
|
.param.sig = {
|
|
.pk = &subject_pk,
|
|
.sig = &sig,
|
|
.alg = &sig_alg,
|
|
.data = &raw_data,
|
|
}
|
|
}
|
|
},
|
|
.authenticated_data = {
|
|
[0] = {
|
|
.type_desc = &scp_bl2u_hash,
|
|
.data = {
|
|
.ptr = (void *)scp_fw_hash_buf,
|
|
.len = (unsigned int)HASH_DER_LEN
|
|
}
|
|
},
|
|
[1] = {
|
|
.type_desc = &bl2u_hash,
|
|
.data = {
|
|
.ptr = (void *)tb_fw_hash_buf,
|
|
.len = (unsigned int)HASH_DER_LEN
|
|
}
|
|
},
|
|
[2] = {
|
|
.type_desc = &ns_bl2u_hash,
|
|
.data = {
|
|
.ptr = (void *)nt_world_bl_hash_buf,
|
|
.len = (unsigned int)HASH_DER_LEN
|
|
}
|
|
}
|
|
}
|
|
},
|
|
/*
|
|
* SCP_BL2U
|
|
*/
|
|
[SCP_BL2U_IMAGE_ID] = {
|
|
.img_id = SCP_BL2U_IMAGE_ID,
|
|
.img_type = IMG_RAW,
|
|
.parent = &cot_desc[FWU_CERT_ID],
|
|
.img_auth_methods = {
|
|
[0] = {
|
|
.type = AUTH_METHOD_HASH,
|
|
.param.hash = {
|
|
.data = &raw_data,
|
|
.hash = &scp_bl2u_hash,
|
|
}
|
|
}
|
|
}
|
|
},
|
|
/*
|
|
* BL2U
|
|
*/
|
|
[BL2U_IMAGE_ID] = {
|
|
.img_id = BL2U_IMAGE_ID,
|
|
.img_type = IMG_RAW,
|
|
.parent = &cot_desc[FWU_CERT_ID],
|
|
.img_auth_methods = {
|
|
[0] = {
|
|
.type = AUTH_METHOD_HASH,
|
|
.param.hash = {
|
|
.data = &raw_data,
|
|
.hash = &bl2u_hash,
|
|
}
|
|
}
|
|
}
|
|
},
|
|
/*
|
|
* NS_BL2U
|
|
*/
|
|
[NS_BL2U_IMAGE_ID] = {
|
|
.img_id = NS_BL2U_IMAGE_ID,
|
|
.img_type = IMG_RAW,
|
|
.parent = &cot_desc[FWU_CERT_ID],
|
|
.img_auth_methods = {
|
|
[0] = {
|
|
.type = AUTH_METHOD_HASH,
|
|
.param.hash = {
|
|
.data = &raw_data,
|
|
.hash = &ns_bl2u_hash,
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
/* Register the CoT in the authentication module */
|
|
REGISTER_COT(cot_desc);
|