forked from project-chip/connectedhomeip
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathPSASpake2p.cpp
201 lines (148 loc) · 7.81 KB
/
PSASpake2p.cpp
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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
/*
* Copyright (c) 2024 Project CHIP Authors
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "PSASpake2p.h"
#include "CHIPCryptoPALPSA.h"
#include <lib/support/CodeUtils.h>
#include <psa/crypto.h>
namespace chip {
namespace Crypto {
CHIP_ERROR PSASpake2p_P256_SHA256_HKDF_HMAC::Init(const uint8_t * context, size_t context_len)
{
Clear();
VerifyOrReturnError(context_len <= sizeof(mContext), CHIP_ERROR_BUFFER_TOO_SMALL);
memcpy(mContext, context, context_len);
mContextLen = context_len;
return CHIP_NO_ERROR;
}
void PSASpake2p_P256_SHA256_HKDF_HMAC::Clear()
{
IgnoreUnusedVariable(psa_pake_abort(&mOperation));
mOperation = psa_pake_operation_init();
IgnoreUnusedVariable(psa_destroy_key(mKey));
mKey = PSA_KEY_ID_NULL;
}
CHIP_ERROR PSASpake2p_P256_SHA256_HKDF_HMAC::BeginVerifier(const uint8_t * my_identity, size_t my_identity_len,
const uint8_t * peer_identity, size_t peer_identity_len,
const uint8_t * w0in, size_t w0in_len, const uint8_t * Lin,
size_t Lin_len)
{
VerifyOrReturnError(w0in_len <= kSpake2p_WS_Length, CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(Lin_len == kP256_Point_Length, CHIP_ERROR_INVALID_ARGUMENT);
uint8_t password[kSpake2p_WS_Length + kP256_Point_Length];
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_pake_cipher_suite_t cp = PSA_PAKE_CIPHER_SUITE_INIT;
psa_pake_cs_set_algorithm(&cp, PSA_ALG_SPAKE2P_MATTER);
psa_pake_cs_set_primitive(&cp, PSA_PAKE_PRIMITIVE(PSA_PAKE_PRIMITIVE_TYPE_ECC, PSA_ECC_FAMILY_SECP_R1, 256));
memcpy(password + 0, w0in, w0in_len);
memcpy(password + w0in_len, Lin, Lin_len);
psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_DERIVE);
psa_set_key_algorithm(&attributes, PSA_ALG_SPAKE2P_MATTER);
psa_set_key_type(&attributes, PSA_KEY_TYPE_SPAKE2P_PUBLIC_KEY(PSA_ECC_FAMILY_SECP_R1));
psa_status_t status = psa_import_key(&attributes, password, w0in_len + Lin_len, &mKey);
psa_reset_key_attributes(&attributes);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
status = psa_pake_setup(&mOperation, mKey, &cp);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
mRole = PSA_PAKE_ROLE_SERVER;
status = psa_pake_set_role(&mOperation, PSA_PAKE_ROLE_SERVER);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
status = psa_pake_set_peer(&mOperation, peer_identity, peer_identity_len);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
status = psa_pake_set_user(&mOperation, my_identity, my_identity_len);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
status = psa_pake_set_context(&mOperation, mContext, mContextLen);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
return CHIP_NO_ERROR;
}
CHIP_ERROR PSASpake2p_P256_SHA256_HKDF_HMAC::BeginProver(const uint8_t * my_identity, size_t my_identity_len,
const uint8_t * peer_identity, size_t peer_identity_len,
const uint8_t * w0in, size_t w0in_len, const uint8_t * w1in,
size_t w1in_len)
{
VerifyOrReturnError(w0in_len <= kSpake2p_WS_Length, CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(w1in_len <= kSpake2p_WS_Length, CHIP_ERROR_INVALID_ARGUMENT);
uint8_t password[kSpake2p_WS_Length * 2];
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_pake_cipher_suite_t cp = PSA_PAKE_CIPHER_SUITE_INIT;
psa_pake_cs_set_algorithm(&cp, PSA_ALG_SPAKE2P_MATTER);
psa_pake_cs_set_primitive(&cp, PSA_PAKE_PRIMITIVE(PSA_PAKE_PRIMITIVE_TYPE_ECC, PSA_ECC_FAMILY_SECP_R1, 256));
memcpy(password + 0, w0in, w0in_len);
memcpy(password + w0in_len, w1in, w1in_len);
psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_DERIVE);
psa_set_key_algorithm(&attributes, PSA_ALG_SPAKE2P_MATTER);
psa_set_key_type(&attributes, PSA_KEY_TYPE_SPAKE2P_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1));
psa_status_t status = psa_import_key(&attributes, password, w0in_len + w1in_len, &mKey);
psa_reset_key_attributes(&attributes);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
status = psa_pake_setup(&mOperation, mKey, &cp);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
mRole = PSA_PAKE_ROLE_CLIENT;
status = psa_pake_set_role(&mOperation, PSA_PAKE_ROLE_CLIENT);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
status = psa_pake_set_user(&mOperation, my_identity, my_identity_len);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
status = psa_pake_set_peer(&mOperation, peer_identity, peer_identity_len);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
status = psa_pake_set_context(&mOperation, mContext, mContextLen);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
return CHIP_NO_ERROR;
}
CHIP_ERROR PSASpake2p_P256_SHA256_HKDF_HMAC::ComputeRoundOne(const uint8_t * pab, size_t pab_len, uint8_t * out, size_t * out_len)
{
VerifyOrReturnError(out_len != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
psa_status_t status;
if (mRole == PSA_PAKE_ROLE_SERVER)
{
status = psa_pake_input(&mOperation, PSA_PAKE_STEP_KEY_SHARE, pab, pab_len);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
}
status = psa_pake_output(&mOperation, PSA_PAKE_STEP_KEY_SHARE, out, *out_len, out_len);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
return CHIP_NO_ERROR;
}
CHIP_ERROR PSASpake2p_P256_SHA256_HKDF_HMAC::ComputeRoundTwo(const uint8_t * in, size_t in_len, uint8_t * out, size_t * out_len)
{
VerifyOrReturnError(out_len != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
psa_status_t status;
if (mRole == PSA_PAKE_ROLE_CLIENT)
{
status = psa_pake_input(&mOperation, PSA_PAKE_STEP_KEY_SHARE, in, in_len);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
}
status = psa_pake_output(&mOperation, PSA_PAKE_STEP_CONFIRM, out, *out_len, out_len);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
return CHIP_NO_ERROR;
}
CHIP_ERROR PSASpake2p_P256_SHA256_HKDF_HMAC::KeyConfirm(const uint8_t * in, size_t in_len)
{
psa_status_t status = psa_pake_input(&mOperation, PSA_PAKE_STEP_CONFIRM, in, in_len);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
return CHIP_NO_ERROR;
}
CHIP_ERROR PSASpake2p_P256_SHA256_HKDF_HMAC::GetKeys(SessionKeystore & keystore, HkdfKeyHandle & key)
{
auto & keyId = key.AsMutable<psa_key_id_t>();
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_set_key_type(&attributes, PSA_KEY_TYPE_DERIVE);
psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_DERIVE);
psa_set_key_algorithm(&attributes, PSA_ALG_HKDF(PSA_ALG_SHA_256));
psa_status_t status = psa_pake_get_shared_key(&(mOperation), &attributes, &keyId);
VerifyOrReturnError(status == PSA_SUCCESS, CHIP_ERROR_INTERNAL);
return CHIP_NO_ERROR;
}
} // namespace Crypto
} // namespace chip