1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* Copyright (c) 2015-2023, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stddef.h>
#include <mbedtls/version.h>
#include <drivers/auth/auth_mod.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>
/*
* 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 fw_config_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];
unsigned char tb_fw_hash_buf[HASH_DER_LEN];
unsigned char scp_fw_hash_buf[HASH_DER_LEN];
unsigned char nt_world_bl_hash_buf[HASH_DER_LEN];
/*
* common Parameter type descriptors across BL1 and BL2
*/
auth_param_type_desc_t trusted_nv_ctr = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_NV_CTR, TRUSTED_FW_NVCOUNTER_OID);
auth_param_type_desc_t subject_pk = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_PUB_KEY, 0);
auth_param_type_desc_t sig = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_SIG, 0);
auth_param_type_desc_t sig_alg = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_SIG_ALG, 0);
auth_param_type_desc_t raw_data = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_RAW_DATA, 0);
/* common hash used across BL1 and BL2 */
auth_param_type_desc_t tb_fw_hash = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_HASH, TRUSTED_BOOT_FW_HASH_OID);
auth_param_type_desc_t tb_fw_config_hash = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_HASH, TRUSTED_BOOT_FW_CONFIG_HASH_OID);
auth_param_type_desc_t fw_config_hash = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_HASH, FW_CONFIG_HASH_OID);
static auth_param_type_desc_t hw_config_hash = AUTH_PARAM_TYPE_DESC(
AUTH_PARAM_HASH, HW_CONFIG_HASH_OID);
/* trusted_boot_fw_cert */
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
}
},
[3] = {
.type_desc = &fw_config_hash,
.data = {
.ptr = (void *)fw_config_hash_buf,
.len = (unsigned int)HASH_DER_LEN
}
}
}
};
/* HW Config */
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
}
}
}
};
|
