drivers/auth/tbbr/tbbr_cot_bl1_r64.c

/*
 * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <stddef.h>

#include <drivers/auth/auth_mod.h>
#include <drivers/auth/mbedtls/mbedtls_config.h>
#include <drivers/auth/tbbr_cot_common.h>

#if USE_TBBR_DEFS
#include <tools_share/tbbr_oid.h>
#else
#include <platform_oid.h>
#endif
#include <platform_def.h>


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];
static unsigned char nt_fw_config_hash_buf[HASH_DER_LEN];

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 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 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 nt_world_bl_hash = AUTH_PARAM_TYPE_DESC(
		AUTH_PARAM_HASH, NON_TRUSTED_WORLD_BOOTLOADER_HASH_OID);
static auth_param_type_desc_t nt_fw_config_hash = AUTH_PARAM_TYPE_DESC(
		AUTH_PARAM_HASH, NON_TRUSTED_FW_CONFIG_HASH_OID);
/*
 * Trusted key certificate
 */
static const auth_img_desc_t trusted_key_cert = {
	.img_id = TRUSTED_KEY_CERT_ID,
	.img_type = IMG_CERT,
	.parent = NULL,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
		[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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
		[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
			}
		}
	}
};
/*
 * Non-Trusted Firmware
 */
static const auth_img_desc_t non_trusted_fw_key_cert = {
	.img_id = NON_TRUSTED_FW_KEY_CERT_ID,
	.img_type = IMG_CERT,
	.parent = &trusted_key_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
		[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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
		[0] = {
			.type_desc = &nt_fw_content_pk,
			.data = {
				.ptr = (void *)content_pk_buf,
				.len = (unsigned int)PK_DER_LEN
			}
		}
	}
};
static const auth_img_desc_t non_trusted_fw_content_cert = {
	.img_id = NON_TRUSTED_FW_CONTENT_CERT_ID,
	.img_type = IMG_CERT,
	.parent = &non_trusted_fw_key_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
		[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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
		[0] = {
			.type_desc = &nt_world_bl_hash,
			.data = {
				.ptr = (void *)nt_world_bl_hash_buf,
				.len = (unsigned int)HASH_DER_LEN
			}
		},
		[1] = {
			.type_desc = &nt_fw_config_hash,
			.data = {
				.ptr = (void *)nt_fw_config_hash_buf,
				.len = (unsigned int)HASH_DER_LEN
			}
		}
	}
};
static const auth_img_desc_t bl33_image = {
	.img_id = BL33_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &non_trusted_fw_content_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
		[0] = {
			.type = AUTH_METHOD_HASH,
			.param.hash = {
				.data = &raw_data,
				.hash = &nt_world_bl_hash
			}
		}
	}
};

static const auth_img_desc_t * const cot_desc[] = {
	[TRUSTED_KEY_CERT_ID]			=	&trusted_key_cert,
	[NON_TRUSTED_FW_KEY_CERT_ID]		=	&non_trusted_fw_key_cert,
	[NON_TRUSTED_FW_CONTENT_CERT_ID]	=	&non_trusted_fw_content_cert,
	[BL33_IMAGE_ID]				=	&bl33_image,
};

/* Register the CoT in the authentication module */
REGISTER_COT(cot_desc);