drivers/auth/dualroot/cot.c - filogic/atf - Gitiles

 /*
  * Copyright (c) 2020, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */

 #include <stddef.h>

 #include <platform_def.h>

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

 /*
  * TODO: Remove dependency on mbedTLS. The chain of trust should be agnostic of
  * the specific cryptographic library in use.
 */
 /*
  * Maximum key and hash sizes (in DER format).
  *
  * Both RSA and ECDSA keys may be used at the same time. In this case, the key
  * buffers must be big enough to hold either. As RSA keys are bigger than ECDSA
  * ones for all key sizes we support, they impose the minimum size of these
  * buffers.
  */
 #if TF_MBEDTLS_USE_RSA
 #if TF_MBEDTLS_KEY_SIZE == 1024
 #define PK_DER_LEN			162
 #elif TF_MBEDTLS_KEY_SIZE == 2048
 #define PK_DER_LEN			294
 #elif TF_MBEDTLS_KEY_SIZE == 3072
 #define PK_DER_LEN			422
 #elif TF_MBEDTLS_KEY_SIZE == 4096
 #define PK_DER_LEN			550
 #else
 #error "Invalid value for TF_MBEDTLS_KEY_SIZE"
 #endif
 #else /* Only using ECDSA keys. */
 #define PK_DER_LEN			91
 #endif

 #if TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA256
 #define HASH_DER_LEN			51
 #elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA384
 #define HASH_DER_LEN			67
 #elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA512
 #define HASH_DER_LEN			83
 #else
 #error "Invalid value for TF_MBEDTLS_HASH_ALG_ID"
 #endif

 /*
  * Allocate static buffers to store the authentication parameters extracted from
  * the certificates.
  */
 static unsigned char tb_fw_hash_buf[HASH_DER_LEN];
 static unsigned char tb_fw_config_hash_buf[HASH_DER_LEN];
 static unsigned char hw_config_hash_buf[HASH_DER_LEN];
 static unsigned char scp_fw_hash_buf[HASH_DER_LEN];
 static unsigned char nt_world_bl_hash_buf[HASH_DER_LEN];

 #ifdef IMAGE_BL2
 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 soc_fw_config_hash_buf[HASH_DER_LEN];
 static unsigned char tos_fw_config_hash_buf[HASH_DER_LEN];
 static unsigned char nt_fw_config_hash_buf[HASH_DER_LEN];

 static unsigned char trusted_world_pk_buf[PK_DER_LEN];
 static unsigned char content_pk_buf[PK_DER_LEN];
 #endif

 /*
  * 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 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 tb_fw_hash = AUTH_PARAM_TYPE_DESC(
 		AUTH_PARAM_HASH, TRUSTED_BOOT_FW_HASH_OID);
 static auth_param_type_desc_t tb_fw_config_hash = AUTH_PARAM_TYPE_DESC(
 		AUTH_PARAM_HASH, TRUSTED_BOOT_FW_CONFIG_HASH_OID);
 static auth_param_type_desc_t hw_config_hash = AUTH_PARAM_TYPE_DESC(
 		AUTH_PARAM_HASH, HW_CONFIG_HASH_OID);
 #ifdef IMAGE_BL1
 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);
 #endif /* IMAGE_BL1 */

 #ifdef IMAGE_BL2
 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 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 prot_pk = AUTH_PARAM_TYPE_DESC(
 		AUTH_PARAM_PUB_KEY, PROT_PK_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 soc_fw_config_hash = AUTH_PARAM_TYPE_DESC(
 		AUTH_PARAM_HASH, SOC_FW_CONFIG_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_config_hash = AUTH_PARAM_TYPE_DESC(
 		AUTH_PARAM_HASH, TRUSTED_OS_FW_CONFIG_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 nt_fw_config_hash = AUTH_PARAM_TYPE_DESC(
 		AUTH_PARAM_HASH, NON_TRUSTED_FW_CONFIG_HASH_OID);
 #endif /* IMAGE_BL2 */


 /* BL2 */
 static const auth_img_desc_t trusted_boot_fw_cert = {
 	.img_id = TRUSTED_BOOT_FW_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 = &tb_fw_hash,
 			.data = {
 				.ptr = (void *)tb_fw_hash_buf,
 				.len = (unsigned int)HASH_DER_LEN
 			}
 		},
 		[1] = {
 			.type_desc = &tb_fw_config_hash,
 			.data = {
 				.ptr = (void *)tb_fw_config_hash_buf,
 				.len = (unsigned int)HASH_DER_LEN
 			}
 		},
 		[2] = {
 			.type_desc = &hw_config_hash,
 			.data = {
 				.ptr = (void *)hw_config_hash_buf,
 				.len = (unsigned int)HASH_DER_LEN
 			}
 		}
 	}
 };

 #ifdef IMAGE_BL1
 static const auth_img_desc_t bl2_image = {
 	.img_id = BL2_IMAGE_ID,
 	.img_type = IMG_RAW,
 	.parent = &trusted_boot_fw_cert,
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[0] = {
 			.type = AUTH_METHOD_HASH,
 			.param.hash = {
 				.data = &raw_data,
 				.hash = &tb_fw_hash
 			}
 		}
 	}
 };
 #endif /* IMAGE_BL1 */

 /* HW Config */
 static const auth_img_desc_t hw_config = {
 	.img_id = HW_CONFIG_ID,
 	.img_type = IMG_RAW,
 	.parent = &trusted_boot_fw_cert,
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[0] = {
 			.type = AUTH_METHOD_HASH,
 			.param.hash = {
 				.data = &raw_data,
 				.hash = &hw_config_hash
 			}
 		}
 	}
 };

 /* TB FW Config */
 #ifdef IMAGE_BL1
 static const auth_img_desc_t tb_fw_config = {
 	.img_id = TB_FW_CONFIG_ID,
 	.img_type = IMG_RAW,
 	.parent = &trusted_boot_fw_cert,
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[0] = {
 			.type = AUTH_METHOD_HASH,
 			.param.hash = {
 				.data = &raw_data,
 				.hash = &tb_fw_config_hash
 			}
 		}
 	}
 };
 #endif /* IMAGE_BL1 */

 #ifdef IMAGE_BL2
 /* 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
 			}
 		},
 	}
 };

 /* SCP Firmware */
 static const auth_img_desc_t scp_fw_key_cert = {
 	.img_id = SCP_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 = &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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
 		[0] = {
 			.type_desc = &scp_fw_content_pk,
 			.data = {
 				.ptr = (void *)content_pk_buf,
 				.len = (unsigned int)PK_DER_LEN
 			}
 		}
 	}
 };

 static const auth_img_desc_t scp_fw_content_cert = {
 	.img_id = SCP_FW_CONTENT_CERT_ID,
 	.img_type = IMG_CERT,
 	.parent = &scp_fw_key_cert,
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
 		[0] = {
 			.type_desc = &scp_fw_hash,
 			.data = {
 				.ptr = (void *)scp_fw_hash_buf,
 				.len = (unsigned int)HASH_DER_LEN
 			}
 		}
 	}
 };

 static const auth_img_desc_t scp_bl2_image = {
 	.img_id = SCP_BL2_IMAGE_ID,
 	.img_type = IMG_RAW,
 	.parent = &scp_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 = &scp_fw_hash
 			}
 		}
 	}
 };

 /* SoC Firmware */
 static const auth_img_desc_t soc_fw_key_cert = {
 	.img_id = SOC_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 = &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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
 		[0] = {
 			.type_desc = &soc_fw_content_pk,
 			.data = {
 				.ptr = (void *)content_pk_buf,
 				.len = (unsigned int)PK_DER_LEN
 			}
 		}
 	}
 };

 static const auth_img_desc_t soc_fw_content_cert = {
 	.img_id = SOC_FW_CONTENT_CERT_ID,
 	.img_type = IMG_CERT,
 	.parent = &soc_fw_key_cert,
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
 		[0] = {
 			.type_desc = &soc_fw_hash,
 			.data = {
 				.ptr = (void *)soc_fw_hash_buf,
 				.len = (unsigned int)HASH_DER_LEN
 			}
 		},
 		[1] = {
 			.type_desc = &soc_fw_config_hash,
 			.data = {
 				.ptr = (void *)soc_fw_config_hash_buf,
 				.len = (unsigned int)HASH_DER_LEN
 			}
 		}
 	}
 };

 static const auth_img_desc_t bl31_image = {
 	.img_id = BL31_IMAGE_ID,
 	.img_type = IMG_RAW,
 	.parent = &soc_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 = &soc_fw_hash
 			}
 		}
 	}
 };

 /* SOC FW Config */
 static const auth_img_desc_t soc_fw_config = {
 	.img_id = SOC_FW_CONFIG_ID,
 	.img_type = IMG_RAW,
 	.parent = &soc_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 = &soc_fw_config_hash
 			}
 		}
 	}
 };

 /* Trusted OS Firmware */
 static const auth_img_desc_t trusted_os_fw_key_cert = {
 	.img_id = TRUSTED_OS_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 = &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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
 		[0] = {
 			.type_desc = &tos_fw_content_pk,
 			.data = {
 				.ptr = (void *)content_pk_buf,
 				.len = (unsigned int)PK_DER_LEN
 			}
 		}
 	}
 };

 static const auth_img_desc_t trusted_os_fw_content_cert = {
 	.img_id = TRUSTED_OS_FW_CONTENT_CERT_ID,
 	.img_type = IMG_CERT,
 	.parent = &trusted_os_fw_key_cert,
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
 		[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
 			}
 		},
 		[3] = {
 			.type_desc = &tos_fw_config_hash,
 			.data = {
 				.ptr = (void *)tos_fw_config_hash_buf,
 				.len = (unsigned int)HASH_DER_LEN
 			}
 		}
 	}
 };

 static const auth_img_desc_t bl32_image = {
 	.img_id = BL32_IMAGE_ID,
 	.img_type = IMG_RAW,
 	.parent = &trusted_os_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 = &tos_fw_hash
 			}
 		}
 	}
 };

 static const auth_img_desc_t bl32_extra1_image = {
 	.img_id = BL32_EXTRA1_IMAGE_ID,
 	.img_type = IMG_RAW,
 	.parent = &trusted_os_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 = &tos_fw_extra1_hash
 			}
 		}
 	}
 };

 static const auth_img_desc_t bl32_extra2_image = {
 	.img_id = BL32_EXTRA2_IMAGE_ID,
 	.img_type = IMG_RAW,
 	.parent = &trusted_os_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 = &tos_fw_extra2_hash
 			}
 		}
 	}
 };

 /* TOS FW Config */
 static const auth_img_desc_t tos_fw_config = {
 	.img_id = TOS_FW_CONFIG_ID,
 	.img_type = IMG_RAW,
 	.parent = &trusted_os_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 = &tos_fw_config_hash
 			}
 		}
 	}
 };

 /* Non-Trusted Firmware */
 static const auth_img_desc_t non_trusted_fw_content_cert = {
 	.img_id = NON_TRUSTED_FW_CONTENT_CERT_ID,
 	.img_type = IMG_CERT,
 	.parent = NULL, /* Root certificate.  */
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[0] = {
 			.type = AUTH_METHOD_SIG,
 			.param.sig = {
 				.pk = &prot_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
 			}
 		}
 	}
 };

 /* NT FW Config */
 static const auth_img_desc_t nt_fw_config = {
 	.img_id = NT_FW_CONFIG_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_fw_config_hash
 			}
 		}
 	}
 };

 #else  /* IMAGE_BL2 */

 /* FWU auth descriptor */
 static const auth_img_desc_t fwu_cert = {
 	.img_id = FWU_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
 			}
 		}
 	},
 	.authenticated_data = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
 		[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 */
 static const auth_img_desc_t scp_bl2u_image = {
 	.img_id = SCP_BL2U_IMAGE_ID,
 	.img_type = IMG_RAW,
 	.parent = &fwu_cert,
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[0] = {
 			.type = AUTH_METHOD_HASH,
 			.param.hash = {
 				.data = &raw_data,
 				.hash = &scp_bl2u_hash
 			}
 		}
 	}
 };

 /* BL2U */
 static const auth_img_desc_t bl2u_image = {
 	.img_id = BL2U_IMAGE_ID,
 	.img_type = IMG_RAW,
 	.parent = &fwu_cert,
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[0] = {
 			.type = AUTH_METHOD_HASH,
 			.param.hash = {
 				.data = &raw_data,
 				.hash = &bl2u_hash
 			}
 		}
 	}
 };

 /* NS_BL2U */
 static const auth_img_desc_t ns_bl2u_image = {
 	.img_id = NS_BL2U_IMAGE_ID,
 	.img_type = IMG_RAW,
 	.parent = &fwu_cert,
 	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
 		[0] = {
 			.type = AUTH_METHOD_HASH,
 			.param.hash = {
 				.data = &raw_data,
 				.hash = &ns_bl2u_hash
 			}
 		}
 	}
 };
 #endif /* IMAGE_BL2 */

 /*
  * Chain of trust definition
  */
 #ifdef IMAGE_BL1
 static const auth_img_desc_t * const cot_desc[] = {
 	[TRUSTED_BOOT_FW_CERT_ID]		=	&trusted_boot_fw_cert,
 	[BL2_IMAGE_ID]				=	&bl2_image,
 	[HW_CONFIG_ID]				=	&hw_config,
 	[TB_FW_CONFIG_ID]			=	&tb_fw_config,
 	[FWU_CERT_ID]				=	&fwu_cert,
 	[SCP_BL2U_IMAGE_ID]			=	&scp_bl2u_image,
 	[BL2U_IMAGE_ID]				=	&bl2u_image,
 	[NS_BL2U_IMAGE_ID]			=	&ns_bl2u_image
 };
 #else /* IMAGE_BL2 */
 static const auth_img_desc_t * const cot_desc[] = {
 	[TRUSTED_BOOT_FW_CERT_ID]		=	&trusted_boot_fw_cert,
 	[HW_CONFIG_ID]				=	&hw_config,
 	[TRUSTED_KEY_CERT_ID]			=	&trusted_key_cert,
 	[SCP_FW_KEY_CERT_ID]			=	&scp_fw_key_cert,
 	[SCP_FW_CONTENT_CERT_ID]		=	&scp_fw_content_cert,
 	[SCP_BL2_IMAGE_ID]			=	&scp_bl2_image,
 	[SOC_FW_KEY_CERT_ID]			=	&soc_fw_key_cert,
 	[SOC_FW_CONTENT_CERT_ID]		=	&soc_fw_content_cert,
 	[BL31_IMAGE_ID]				=	&bl31_image,
 	[SOC_FW_CONFIG_ID]			=	&soc_fw_config,
 	[TRUSTED_OS_FW_KEY_CERT_ID]		=	&trusted_os_fw_key_cert,
 	[TRUSTED_OS_FW_CONTENT_CERT_ID]		=	&trusted_os_fw_content_cert,
 	[BL32_IMAGE_ID]				=	&bl32_image,
 	[BL32_EXTRA1_IMAGE_ID]			=	&bl32_extra1_image,
 	[BL32_EXTRA2_IMAGE_ID]			=	&bl32_extra2_image,
 	[TOS_FW_CONFIG_ID]			=	&tos_fw_config,
 	[NON_TRUSTED_FW_CONTENT_CERT_ID]	=	&non_trusted_fw_content_cert,
 	[BL33_IMAGE_ID]				=	&bl33_image,
 	[NT_FW_CONFIG_ID]			=	&nt_fw_config,
 };
 #endif

 /* Register the CoT in the authentication module */
 REGISTER_COT(cot_desc);
	/*
	* Copyright (c) 2020, Arm Limited. All rights reserved.
	*
	* SPDX-License-Identifier: BSD-3-Clause
	*/

	#include <stddef.h>

	#include <platform_def.h>

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

	/*
	* TODO: Remove dependency on mbedTLS. The chain of trust should be agnostic of
	* the specific cryptographic library in use.
	*/
	/*
	* Maximum key and hash sizes (in DER format).
	*
	* Both RSA and ECDSA keys may be used at the same time. In this case, the key
	* buffers must be big enough to hold either. As RSA keys are bigger than ECDSA
	* ones for all key sizes we support, they impose the minimum size of these
	* buffers.
	*/
	#if TF_MBEDTLS_USE_RSA
	#if TF_MBEDTLS_KEY_SIZE == 1024
	#define PK_DER_LEN 162
	#elif TF_MBEDTLS_KEY_SIZE == 2048
	#define PK_DER_LEN 294
	#elif TF_MBEDTLS_KEY_SIZE == 3072
	#define PK_DER_LEN 422
	#elif TF_MBEDTLS_KEY_SIZE == 4096
	#define PK_DER_LEN 550
	#else
	#error "Invalid value for TF_MBEDTLS_KEY_SIZE"
	#endif
	#else /* Only using ECDSA keys. */
	#define PK_DER_LEN 91
	#endif

	#if TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA256
	#define HASH_DER_LEN 51
	#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA384
	#define HASH_DER_LEN 67
	#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA512
	#define HASH_DER_LEN 83
	#else
	#error "Invalid value for TF_MBEDTLS_HASH_ALG_ID"
	#endif

	/*
	* Allocate static buffers to store the authentication parameters extracted from
	* the certificates.
	*/
	static unsigned char tb_fw_hash_buf[HASH_DER_LEN];
	static unsigned char tb_fw_config_hash_buf[HASH_DER_LEN];
	static unsigned char hw_config_hash_buf[HASH_DER_LEN];
	static unsigned char scp_fw_hash_buf[HASH_DER_LEN];
	static unsigned char nt_world_bl_hash_buf[HASH_DER_LEN];

	#ifdef IMAGE_BL2
	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 soc_fw_config_hash_buf[HASH_DER_LEN];
	static unsigned char tos_fw_config_hash_buf[HASH_DER_LEN];
	static unsigned char nt_fw_config_hash_buf[HASH_DER_LEN];

	static unsigned char trusted_world_pk_buf[PK_DER_LEN];
	static unsigned char content_pk_buf[PK_DER_LEN];
	#endif

	/*
	* 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 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 tb_fw_hash = AUTH_PARAM_TYPE_DESC(
	AUTH_PARAM_HASH, TRUSTED_BOOT_FW_HASH_OID);
	static auth_param_type_desc_t tb_fw_config_hash = AUTH_PARAM_TYPE_DESC(
	AUTH_PARAM_HASH, TRUSTED_BOOT_FW_CONFIG_HASH_OID);
	static auth_param_type_desc_t hw_config_hash = AUTH_PARAM_TYPE_DESC(
	AUTH_PARAM_HASH, HW_CONFIG_HASH_OID);
	#ifdef IMAGE_BL1
	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);
	#endif /* IMAGE_BL1 */

	#ifdef IMAGE_BL2
	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 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 prot_pk = AUTH_PARAM_TYPE_DESC(
	AUTH_PARAM_PUB_KEY, PROT_PK_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 soc_fw_config_hash = AUTH_PARAM_TYPE_DESC(
	AUTH_PARAM_HASH, SOC_FW_CONFIG_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_config_hash = AUTH_PARAM_TYPE_DESC(
	AUTH_PARAM_HASH, TRUSTED_OS_FW_CONFIG_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 nt_fw_config_hash = AUTH_PARAM_TYPE_DESC(
	AUTH_PARAM_HASH, NON_TRUSTED_FW_CONFIG_HASH_OID);
	#endif /* IMAGE_BL2 */


	/* BL2 */
	static const auth_img_desc_t trusted_boot_fw_cert = {
	.img_id = TRUSTED_BOOT_FW_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 = &tb_fw_hash,
	.data = {
	.ptr = (void *)tb_fw_hash_buf,
	.len = (unsigned int)HASH_DER_LEN
	}
	},
	[1] = {
	.type_desc = &tb_fw_config_hash,
	.data = {
	.ptr = (void *)tb_fw_config_hash_buf,
	.len = (unsigned int)HASH_DER_LEN
	}
	},
	[2] = {
	.type_desc = &hw_config_hash,
	.data = {
	.ptr = (void *)hw_config_hash_buf,
	.len = (unsigned int)HASH_DER_LEN
	}
	}
	}
	};

	#ifdef IMAGE_BL1
	static const auth_img_desc_t bl2_image = {
	.img_id = BL2_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &trusted_boot_fw_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[0] = {
	.type = AUTH_METHOD_HASH,
	.param.hash = {
	.data = &raw_data,
	.hash = &tb_fw_hash
	}
	}
	}
	};
	#endif /* IMAGE_BL1 */

	/* HW Config */
	static const auth_img_desc_t hw_config = {
	.img_id = HW_CONFIG_ID,
	.img_type = IMG_RAW,
	.parent = &trusted_boot_fw_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[0] = {
	.type = AUTH_METHOD_HASH,
	.param.hash = {
	.data = &raw_data,
	.hash = &hw_config_hash
	}
	}
	}
	};

	/* TB FW Config */
	#ifdef IMAGE_BL1
	static const auth_img_desc_t tb_fw_config = {
	.img_id = TB_FW_CONFIG_ID,
	.img_type = IMG_RAW,
	.parent = &trusted_boot_fw_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[0] = {
	.type = AUTH_METHOD_HASH,
	.param.hash = {
	.data = &raw_data,
	.hash = &tb_fw_config_hash
	}
	}
	}
	};
	#endif /* IMAGE_BL1 */

	#ifdef IMAGE_BL2
	/* 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
	}
	},
	}
	};

	/* SCP Firmware */
	static const auth_img_desc_t scp_fw_key_cert = {
	.img_id = SCP_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 = &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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
	[0] = {
	.type_desc = &scp_fw_content_pk,
	.data = {
	.ptr = (void *)content_pk_buf,
	.len = (unsigned int)PK_DER_LEN
	}
	}
	}
	};

	static const auth_img_desc_t scp_fw_content_cert = {
	.img_id = SCP_FW_CONTENT_CERT_ID,
	.img_type = IMG_CERT,
	.parent = &scp_fw_key_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
	[0] = {
	.type_desc = &scp_fw_hash,
	.data = {
	.ptr = (void *)scp_fw_hash_buf,
	.len = (unsigned int)HASH_DER_LEN
	}
	}
	}
	};

	static const auth_img_desc_t scp_bl2_image = {
	.img_id = SCP_BL2_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &scp_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 = &scp_fw_hash
	}
	}
	}
	};

	/* SoC Firmware */
	static const auth_img_desc_t soc_fw_key_cert = {
	.img_id = SOC_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 = &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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
	[0] = {
	.type_desc = &soc_fw_content_pk,
	.data = {
	.ptr = (void *)content_pk_buf,
	.len = (unsigned int)PK_DER_LEN
	}
	}
	}
	};

	static const auth_img_desc_t soc_fw_content_cert = {
	.img_id = SOC_FW_CONTENT_CERT_ID,
	.img_type = IMG_CERT,
	.parent = &soc_fw_key_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
	[0] = {
	.type_desc = &soc_fw_hash,
	.data = {
	.ptr = (void *)soc_fw_hash_buf,
	.len = (unsigned int)HASH_DER_LEN
	}
	},
	[1] = {
	.type_desc = &soc_fw_config_hash,
	.data = {
	.ptr = (void *)soc_fw_config_hash_buf,
	.len = (unsigned int)HASH_DER_LEN
	}
	}
	}
	};

	static const auth_img_desc_t bl31_image = {
	.img_id = BL31_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &soc_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 = &soc_fw_hash
	}
	}
	}
	};

	/* SOC FW Config */
	static const auth_img_desc_t soc_fw_config = {
	.img_id = SOC_FW_CONFIG_ID,
	.img_type = IMG_RAW,
	.parent = &soc_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 = &soc_fw_config_hash
	}
	}
	}
	};

	/* Trusted OS Firmware */
	static const auth_img_desc_t trusted_os_fw_key_cert = {
	.img_id = TRUSTED_OS_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 = &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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
	[0] = {
	.type_desc = &tos_fw_content_pk,
	.data = {
	.ptr = (void *)content_pk_buf,
	.len = (unsigned int)PK_DER_LEN
	}
	}
	}
	};

	static const auth_img_desc_t trusted_os_fw_content_cert = {
	.img_id = TRUSTED_OS_FW_CONTENT_CERT_ID,
	.img_type = IMG_CERT,
	.parent = &trusted_os_fw_key_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[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 = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
	[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
	}
	},
	[3] = {
	.type_desc = &tos_fw_config_hash,
	.data = {
	.ptr = (void *)tos_fw_config_hash_buf,
	.len = (unsigned int)HASH_DER_LEN
	}
	}
	}
	};

	static const auth_img_desc_t bl32_image = {
	.img_id = BL32_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &trusted_os_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 = &tos_fw_hash
	}
	}
	}
	};

	static const auth_img_desc_t bl32_extra1_image = {
	.img_id = BL32_EXTRA1_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &trusted_os_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 = &tos_fw_extra1_hash
	}
	}
	}
	};

	static const auth_img_desc_t bl32_extra2_image = {
	.img_id = BL32_EXTRA2_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &trusted_os_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 = &tos_fw_extra2_hash
	}
	}
	}
	};

	/* TOS FW Config */
	static const auth_img_desc_t tos_fw_config = {
	.img_id = TOS_FW_CONFIG_ID,
	.img_type = IMG_RAW,
	.parent = &trusted_os_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 = &tos_fw_config_hash
	}
	}
	}
	};

	/* Non-Trusted Firmware */
	static const auth_img_desc_t non_trusted_fw_content_cert = {
	.img_id = NON_TRUSTED_FW_CONTENT_CERT_ID,
	.img_type = IMG_CERT,
	.parent = NULL, /* Root certificate. */
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[0] = {
	.type = AUTH_METHOD_SIG,
	.param.sig = {
	.pk = &prot_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
	}
	}
	}
	};

	/* NT FW Config */
	static const auth_img_desc_t nt_fw_config = {
	.img_id = NT_FW_CONFIG_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_fw_config_hash
	}
	}
	}
	};

	#else /* IMAGE_BL2 */

	/* FWU auth descriptor */
	static const auth_img_desc_t fwu_cert = {
	.img_id = FWU_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
	}
	}
	},
	.authenticated_data = (const auth_param_desc_t[COT_MAX_VERIFIED_PARAMS]) {
	[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 */
	static const auth_img_desc_t scp_bl2u_image = {
	.img_id = SCP_BL2U_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &fwu_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[0] = {
	.type = AUTH_METHOD_HASH,
	.param.hash = {
	.data = &raw_data,
	.hash = &scp_bl2u_hash
	}
	}
	}
	};

	/* BL2U */
	static const auth_img_desc_t bl2u_image = {
	.img_id = BL2U_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &fwu_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[0] = {
	.type = AUTH_METHOD_HASH,
	.param.hash = {
	.data = &raw_data,
	.hash = &bl2u_hash
	}
	}
	}
	};

	/* NS_BL2U */
	static const auth_img_desc_t ns_bl2u_image = {
	.img_id = NS_BL2U_IMAGE_ID,
	.img_type = IMG_RAW,
	.parent = &fwu_cert,
	.img_auth_methods = (const auth_method_desc_t[AUTH_METHOD_NUM]) {
	[0] = {
	.type = AUTH_METHOD_HASH,
	.param.hash = {
	.data = &raw_data,
	.hash = &ns_bl2u_hash
	}
	}
	}
	};
	#endif /* IMAGE_BL2 */

	/*
	* Chain of trust definition
	*/
	#ifdef IMAGE_BL1
	static const auth_img_desc_t * const cot_desc[] = {
	[TRUSTED_BOOT_FW_CERT_ID] = &trusted_boot_fw_cert,
	[BL2_IMAGE_ID] = &bl2_image,
	[HW_CONFIG_ID] = &hw_config,
	[TB_FW_CONFIG_ID] = &tb_fw_config,
	[FWU_CERT_ID] = &fwu_cert,
	[SCP_BL2U_IMAGE_ID] = &scp_bl2u_image,
	[BL2U_IMAGE_ID] = &bl2u_image,
	[NS_BL2U_IMAGE_ID] = &ns_bl2u_image
	};
	#else /* IMAGE_BL2 */
	static const auth_img_desc_t * const cot_desc[] = {
	[TRUSTED_BOOT_FW_CERT_ID] = &trusted_boot_fw_cert,
	[HW_CONFIG_ID] = &hw_config,
	[TRUSTED_KEY_CERT_ID] = &trusted_key_cert,
	[SCP_FW_KEY_CERT_ID] = &scp_fw_key_cert,
	[SCP_FW_CONTENT_CERT_ID] = &scp_fw_content_cert,
	[SCP_BL2_IMAGE_ID] = &scp_bl2_image,
	[SOC_FW_KEY_CERT_ID] = &soc_fw_key_cert,
	[SOC_FW_CONTENT_CERT_ID] = &soc_fw_content_cert,
	[BL31_IMAGE_ID] = &bl31_image,
	[SOC_FW_CONFIG_ID] = &soc_fw_config,
	[TRUSTED_OS_FW_KEY_CERT_ID] = &trusted_os_fw_key_cert,
	[TRUSTED_OS_FW_CONTENT_CERT_ID] = &trusted_os_fw_content_cert,
	[BL32_IMAGE_ID] = &bl32_image,
	[BL32_EXTRA1_IMAGE_ID] = &bl32_extra1_image,
	[BL32_EXTRA2_IMAGE_ID] = &bl32_extra2_image,
	[TOS_FW_CONFIG_ID] = &tos_fw_config,
	[NON_TRUSTED_FW_CONTENT_CERT_ID] = &non_trusted_fw_content_cert,
	[BL33_IMAGE_ID] = &bl33_image,
	[NT_FW_CONFIG_ID] = &nt_fw_config,
	};
	#endif

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