| /* |
| * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <auth_mod.h> |
| #include <platform_def.h> |
| #include <stddef.h> |
| |
| #if USE_TBBR_DEFS |
| #include <tbbr_oid.h> |
| #else |
| #include <platform_oid.h> |
| #endif |
| |
| |
| /* |
| * Maximum key and hash sizes (in DER format) |
| */ |
| #define PK_DER_LEN 294 |
| #define HASH_DER_LEN 51 |
| |
| /* |
| * The platform must allocate buffers to store the authentication parameters |
| * extracted from the certificates. In this case, because of the way the CoT is |
| * established, we can reuse some of the buffers on different stages |
| */ |
| static unsigned char tb_fw_hash_buf[HASH_DER_LEN]; |
| static unsigned char scp_fw_hash_buf[HASH_DER_LEN]; |
| static unsigned char soc_fw_hash_buf[HASH_DER_LEN]; |
| static unsigned char tos_fw_hash_buf[HASH_DER_LEN]; |
| static unsigned char tos_fw_extra1_hash_buf[HASH_DER_LEN]; |
| static unsigned char tos_fw_extra2_hash_buf[HASH_DER_LEN]; |
| static unsigned char nt_world_bl_hash_buf[HASH_DER_LEN]; |
| static unsigned char trusted_world_pk_buf[PK_DER_LEN]; |
| static unsigned char non_trusted_world_pk_buf[PK_DER_LEN]; |
| static unsigned char content_pk_buf[PK_DER_LEN]; |
| |
| /* |
| * Parameter type descriptors |
| */ |
| static auth_param_type_desc_t trusted_nv_ctr = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_NV_CTR, TRUSTED_FW_NVCOUNTER_OID); |
| static auth_param_type_desc_t non_trusted_nv_ctr = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_NV_CTR, NON_TRUSTED_FW_NVCOUNTER_OID); |
| |
| static auth_param_type_desc_t subject_pk = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_PUB_KEY, 0); |
| static auth_param_type_desc_t sig = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_SIG, 0); |
| static auth_param_type_desc_t sig_alg = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_SIG_ALG, 0); |
| static auth_param_type_desc_t raw_data = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_RAW_DATA, 0); |
| |
| static auth_param_type_desc_t trusted_world_pk = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_PUB_KEY, TRUSTED_WORLD_PK_OID); |
| static auth_param_type_desc_t non_trusted_world_pk = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_PUB_KEY, NON_TRUSTED_WORLD_PK_OID); |
| |
| static auth_param_type_desc_t scp_fw_content_pk = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_PUB_KEY, SCP_FW_CONTENT_CERT_PK_OID); |
| static auth_param_type_desc_t soc_fw_content_pk = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_PUB_KEY, SOC_FW_CONTENT_CERT_PK_OID); |
| static auth_param_type_desc_t tos_fw_content_pk = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_PUB_KEY, TRUSTED_OS_FW_CONTENT_CERT_PK_OID); |
| static auth_param_type_desc_t nt_fw_content_pk = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_PUB_KEY, NON_TRUSTED_FW_CONTENT_CERT_PK_OID); |
| |
| static auth_param_type_desc_t tb_fw_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, TRUSTED_BOOT_FW_HASH_OID); |
| static auth_param_type_desc_t scp_fw_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, SCP_FW_HASH_OID); |
| static auth_param_type_desc_t soc_fw_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, SOC_AP_FW_HASH_OID); |
| static auth_param_type_desc_t tos_fw_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, TRUSTED_OS_FW_HASH_OID); |
| static auth_param_type_desc_t tos_fw_extra1_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, TRUSTED_OS_FW_EXTRA1_HASH_OID); |
| static auth_param_type_desc_t tos_fw_extra2_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, TRUSTED_OS_FW_EXTRA2_HASH_OID); |
| static auth_param_type_desc_t nt_world_bl_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, NON_TRUSTED_WORLD_BOOTLOADER_HASH_OID); |
| static auth_param_type_desc_t scp_bl2u_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, SCP_FWU_CFG_HASH_OID); |
| static auth_param_type_desc_t bl2u_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, AP_FWU_CFG_HASH_OID); |
| static auth_param_type_desc_t ns_bl2u_hash = AUTH_PARAM_TYPE_DESC( |
| AUTH_PARAM_HASH, FWU_HASH_OID); |
| |
| /* |
| * TBBR Chain of trust definition |
| */ |
| static const auth_img_desc_t cot_desc[] = { |
| /* |
| * BL2 |
| */ |
| [TRUSTED_BOOT_FW_CERT_ID] = { |
| .img_id = TRUSTED_BOOT_FW_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, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &trusted_nv_ctr, |
| .plat_nv_ctr = &trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &tb_fw_hash, |
| .data = { |
| .ptr = (void *)tb_fw_hash_buf, |
| .len = (unsigned int)HASH_DER_LEN |
| } |
| } |
| } |
| }, |
| [BL2_IMAGE_ID] = { |
| .img_id = BL2_IMAGE_ID, |
| .img_type = IMG_RAW, |
| .parent = &cot_desc[TRUSTED_BOOT_FW_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_HASH, |
| .param.hash = { |
| .data = &raw_data, |
| .hash = &tb_fw_hash, |
| } |
| } |
| } |
| }, |
| /* |
| * Trusted key certificate |
| */ |
| [TRUSTED_KEY_CERT_ID] = { |
| .img_id = TRUSTED_KEY_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, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &trusted_nv_ctr, |
| .plat_nv_ctr = &trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &trusted_world_pk, |
| .data = { |
| .ptr = (void *)trusted_world_pk_buf, |
| .len = (unsigned int)PK_DER_LEN |
| } |
| }, |
| [1] = { |
| .type_desc = &non_trusted_world_pk, |
| .data = { |
| .ptr = (void *)non_trusted_world_pk_buf, |
| .len = (unsigned int)PK_DER_LEN |
| } |
| } |
| } |
| }, |
| /* |
| * SCP Firmware |
| */ |
| [SCP_FW_KEY_CERT_ID] = { |
| .img_id = SCP_FW_KEY_CERT_ID, |
| .img_type = IMG_CERT, |
| .parent = &cot_desc[TRUSTED_KEY_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_SIG, |
| .param.sig = { |
| .pk = &trusted_world_pk, |
| .sig = &sig, |
| .alg = &sig_alg, |
| .data = &raw_data, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &trusted_nv_ctr, |
| .plat_nv_ctr = &trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &scp_fw_content_pk, |
| .data = { |
| .ptr = (void *)content_pk_buf, |
| .len = (unsigned int)PK_DER_LEN |
| } |
| } |
| } |
| }, |
| [SCP_FW_CONTENT_CERT_ID] = { |
| .img_id = SCP_FW_CONTENT_CERT_ID, |
| .img_type = IMG_CERT, |
| .parent = &cot_desc[SCP_FW_KEY_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_SIG, |
| .param.sig = { |
| .pk = &scp_fw_content_pk, |
| .sig = &sig, |
| .alg = &sig_alg, |
| .data = &raw_data, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &trusted_nv_ctr, |
| .plat_nv_ctr = &trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &scp_fw_hash, |
| .data = { |
| .ptr = (void *)scp_fw_hash_buf, |
| .len = (unsigned int)HASH_DER_LEN |
| } |
| } |
| } |
| }, |
| [SCP_BL2_IMAGE_ID] = { |
| .img_id = SCP_BL2_IMAGE_ID, |
| .img_type = IMG_RAW, |
| .parent = &cot_desc[SCP_FW_CONTENT_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_HASH, |
| .param.hash = { |
| .data = &raw_data, |
| .hash = &scp_fw_hash, |
| } |
| } |
| } |
| }, |
| /* |
| * SoC Firmware |
| */ |
| [SOC_FW_KEY_CERT_ID] = { |
| .img_id = SOC_FW_KEY_CERT_ID, |
| .img_type = IMG_CERT, |
| .parent = &cot_desc[TRUSTED_KEY_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_SIG, |
| .param.sig = { |
| .pk = &trusted_world_pk, |
| .sig = &sig, |
| .alg = &sig_alg, |
| .data = &raw_data, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &trusted_nv_ctr, |
| .plat_nv_ctr = &trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &soc_fw_content_pk, |
| .data = { |
| .ptr = (void *)content_pk_buf, |
| .len = (unsigned int)PK_DER_LEN |
| } |
| } |
| } |
| }, |
| [SOC_FW_CONTENT_CERT_ID] = { |
| .img_id = SOC_FW_CONTENT_CERT_ID, |
| .img_type = IMG_CERT, |
| .parent = &cot_desc[SOC_FW_KEY_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_SIG, |
| .param.sig = { |
| .pk = &soc_fw_content_pk, |
| .sig = &sig, |
| .alg = &sig_alg, |
| .data = &raw_data, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &trusted_nv_ctr, |
| .plat_nv_ctr = &trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &soc_fw_hash, |
| .data = { |
| .ptr = (void *)soc_fw_hash_buf, |
| .len = (unsigned int)HASH_DER_LEN |
| } |
| } |
| } |
| }, |
| [BL31_IMAGE_ID] = { |
| .img_id = BL31_IMAGE_ID, |
| .img_type = IMG_RAW, |
| .parent = &cot_desc[SOC_FW_CONTENT_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_HASH, |
| .param.hash = { |
| .data = &raw_data, |
| .hash = &soc_fw_hash, |
| } |
| } |
| } |
| }, |
| /* |
| * Trusted OS Firmware |
| */ |
| [TRUSTED_OS_FW_KEY_CERT_ID] = { |
| .img_id = TRUSTED_OS_FW_KEY_CERT_ID, |
| .img_type = IMG_CERT, |
| .parent = &cot_desc[TRUSTED_KEY_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_SIG, |
| .param.sig = { |
| .pk = &trusted_world_pk, |
| .sig = &sig, |
| .alg = &sig_alg, |
| .data = &raw_data, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &trusted_nv_ctr, |
| .plat_nv_ctr = &trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &tos_fw_content_pk, |
| .data = { |
| .ptr = (void *)content_pk_buf, |
| .len = (unsigned int)PK_DER_LEN |
| } |
| } |
| } |
| }, |
| [TRUSTED_OS_FW_CONTENT_CERT_ID] = { |
| .img_id = TRUSTED_OS_FW_CONTENT_CERT_ID, |
| .img_type = IMG_CERT, |
| .parent = &cot_desc[TRUSTED_OS_FW_KEY_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_SIG, |
| .param.sig = { |
| .pk = &tos_fw_content_pk, |
| .sig = &sig, |
| .alg = &sig_alg, |
| .data = &raw_data, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &trusted_nv_ctr, |
| .plat_nv_ctr = &trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &tos_fw_hash, |
| .data = { |
| .ptr = (void *)tos_fw_hash_buf, |
| .len = (unsigned int)HASH_DER_LEN |
| } |
| }, |
| [1] = { |
| .type_desc = &tos_fw_extra1_hash, |
| .data = { |
| .ptr = (void *)tos_fw_extra1_hash_buf, |
| .len = (unsigned int)HASH_DER_LEN |
| } |
| }, |
| [2] = { |
| .type_desc = &tos_fw_extra2_hash, |
| .data = { |
| .ptr = (void *)tos_fw_extra2_hash_buf, |
| .len = (unsigned int)HASH_DER_LEN |
| } |
| } |
| } |
| }, |
| [BL32_IMAGE_ID] = { |
| .img_id = BL32_IMAGE_ID, |
| .img_type = IMG_RAW, |
| .parent = &cot_desc[TRUSTED_OS_FW_CONTENT_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_HASH, |
| .param.hash = { |
| .data = &raw_data, |
| .hash = &tos_fw_hash, |
| } |
| } |
| } |
| }, |
| [BL32_EXTRA1_IMAGE_ID] = { |
| .img_id = BL32_EXTRA1_IMAGE_ID, |
| .img_type = IMG_RAW, |
| .parent = &cot_desc[TRUSTED_OS_FW_CONTENT_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_HASH, |
| .param.hash = { |
| .data = &raw_data, |
| .hash = &tos_fw_extra1_hash, |
| } |
| } |
| } |
| }, |
| [BL32_EXTRA2_IMAGE_ID] = { |
| .img_id = BL32_EXTRA2_IMAGE_ID, |
| .img_type = IMG_RAW, |
| .parent = &cot_desc[TRUSTED_OS_FW_CONTENT_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_HASH, |
| .param.hash = { |
| .data = &raw_data, |
| .hash = &tos_fw_extra2_hash, |
| } |
| } |
| } |
| }, |
| /* |
| * Non-Trusted Firmware |
| */ |
| [NON_TRUSTED_FW_KEY_CERT_ID] = { |
| .img_id = NON_TRUSTED_FW_KEY_CERT_ID, |
| .img_type = IMG_CERT, |
| .parent = &cot_desc[TRUSTED_KEY_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_SIG, |
| .param.sig = { |
| .pk = &non_trusted_world_pk, |
| .sig = &sig, |
| .alg = &sig_alg, |
| .data = &raw_data, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &non_trusted_nv_ctr, |
| .plat_nv_ctr = &non_trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &nt_fw_content_pk, |
| .data = { |
| .ptr = (void *)content_pk_buf, |
| .len = (unsigned int)PK_DER_LEN |
| } |
| } |
| } |
| }, |
| [NON_TRUSTED_FW_CONTENT_CERT_ID] = { |
| .img_id = NON_TRUSTED_FW_CONTENT_CERT_ID, |
| .img_type = IMG_CERT, |
| .parent = &cot_desc[NON_TRUSTED_FW_KEY_CERT_ID], |
| .img_auth_methods = { |
| [0] = { |
| .type = AUTH_METHOD_SIG, |
| .param.sig = { |
| .pk = &nt_fw_content_pk, |
| .sig = &sig, |
| .alg = &sig_alg, |
| .data = &raw_data, |
| } |
| }, |
| [1] = { |
| .type = AUTH_METHOD_NV_CTR, |
| .param.nv_ctr = { |
| .cert_nv_ctr = &non_trusted_nv_ctr, |
| .plat_nv_ctr = &non_trusted_nv_ctr |
| } |
| } |
| }, |
| .authenticated_data = { |
| [0] = { |
| .type_desc = &nt_world_bl_hash, |
| .data = { |
| .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); |