446 lines
10 KiB
C
446 lines
10 KiB
C
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/*
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* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 plat_bl2_hash_buf[HASH_DER_LEN];
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static unsigned char plat_bl30_hash_buf[HASH_DER_LEN];
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static unsigned char plat_bl31_hash_buf[HASH_DER_LEN];
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static unsigned char plat_bl32_hash_buf[HASH_DER_LEN];
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static unsigned char plat_bl33_hash_buf[HASH_DER_LEN];
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static unsigned char plat_tz_world_pk_buf[PK_DER_LEN];
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static unsigned char plat_ntz_world_pk_buf[PK_DER_LEN];
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static unsigned char plat_content_pk[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 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 tz_world_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, TZ_WORLD_PK_OID);
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static auth_param_type_desc_t ntz_world_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, NTZ_WORLD_PK_OID);
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static auth_param_type_desc_t bl30_content_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, BL30_CONTENT_CERT_PK_OID);
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static auth_param_type_desc_t bl31_content_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, BL31_CONTENT_CERT_PK_OID);
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static auth_param_type_desc_t bl32_content_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, BL32_CONTENT_CERT_PK_OID);
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static auth_param_type_desc_t bl33_content_pk = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_PUB_KEY, BL33_CONTENT_CERT_PK_OID);
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static auth_param_type_desc_t bl2_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, BL2_HASH_OID);
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static auth_param_type_desc_t bl30_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, BL30_HASH_OID);
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static auth_param_type_desc_t bl31_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, BL31_HASH_OID);
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static auth_param_type_desc_t bl32_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, BL32_HASH_OID);
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static auth_param_type_desc_t bl33_hash = AUTH_PARAM_TYPE_DESC(
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AUTH_PARAM_HASH, BL33_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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[BL2_CERT_ID] = {
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.img_id = BL2_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &bl2_hash,
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.data = {
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.ptr = (void *)plat_bl2_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[BL2_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 = &bl2_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &tz_world_pk,
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.data = {
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.ptr = (void *)plat_tz_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 = &ntz_world_pk,
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.data = {
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.ptr = (void *)plat_ntz_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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* BL3-0
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*/
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[BL30_KEY_CERT_ID] = {
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.img_id = BL30_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 = &tz_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &bl30_content_pk,
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.data = {
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.ptr = (void *)plat_content_pk,
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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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[BL30_CERT_ID] = {
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.img_id = BL30_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[BL30_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 = &bl30_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &bl30_hash,
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.data = {
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.ptr = (void *)plat_bl30_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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[BL30_IMAGE_ID] = {
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.img_id = BL30_IMAGE_ID,
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.img_type = IMG_RAW,
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.parent = &cot_desc[BL30_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 = &bl30_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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* BL3-1
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*/
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[BL31_KEY_CERT_ID] = {
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.img_id = BL31_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 = &tz_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &bl31_content_pk,
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.data = {
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.ptr = (void *)plat_content_pk,
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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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[BL31_CERT_ID] = {
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.img_id = BL31_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[BL31_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 = &bl31_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &bl31_hash,
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.data = {
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.ptr = (void *)plat_bl31_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[BL31_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 = &bl31_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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* BL3-2
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*/
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[BL32_KEY_CERT_ID] = {
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.img_id = BL32_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 = &tz_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &bl32_content_pk,
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.data = {
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.ptr = (void *)plat_content_pk,
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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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[BL32_CERT_ID] = {
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.img_id = BL32_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[BL32_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 = &bl32_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &bl32_hash,
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.data = {
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.ptr = (void *)plat_bl32_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[BL32_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 = &bl32_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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* BL3-3
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*/
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[BL33_KEY_CERT_ID] = {
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.img_id = BL33_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 = &ntz_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &bl33_content_pk,
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.data = {
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.ptr = (void *)plat_content_pk,
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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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[BL33_CERT_ID] = {
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.img_id = BL33_CERT_ID,
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.img_type = IMG_CERT,
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.parent = &cot_desc[BL33_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 = &bl33_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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},
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.authenticated_data = {
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[0] = {
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.type_desc = &bl33_hash,
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.data = {
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.ptr = (void *)plat_bl33_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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[BL33_IMAGE_ID] = {
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.img_id = BL33_IMAGE_ID,
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.img_type = IMG_RAW,
|
||
|
.parent = &cot_desc[BL33_CERT_ID],
|
||
|
.img_auth_methods = {
|
||
|
[0] = {
|
||
|
.type = AUTH_METHOD_HASH,
|
||
|
.param.hash = {
|
||
|
.data = &raw_data,
|
||
|
.hash = &bl33_hash,
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
/* Register the CoT in the authentication module */
|
||
|
REGISTER_COT(cot_desc);
|