Line data Source code
1 : /*
2 : *
3 : * Copyright (c) 2021-2022 Project CHIP Authors
4 : *
5 : * Licensed under the Apache License, Version 2.0 (the "License");
6 : * you may not use this file except in compliance with the License.
7 : * You may obtain a copy of the License at
8 : *
9 : * http://www.apache.org/licenses/LICENSE-2.0
10 : *
11 : * Unless required by applicable law or agreed to in writing, software
12 : * distributed under the License is distributed on an "AS IS" BASIS,
13 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 : * See the License for the specific language governing permissions and
15 : * limitations under the License.
16 : */
17 : #include "DefaultDeviceAttestationVerifier.h"
18 :
19 : #include <controller/OperationalCredentialsDelegate.h>
20 : #include <credentials/CHIPCert.h>
21 : #include <credentials/CertificationDeclaration.h>
22 : #include <credentials/DeviceAttestationConstructor.h>
23 : #include <credentials/DeviceAttestationVendorReserved.h>
24 : #include <credentials/attestation_verifier/TestPAAStore.h>
25 : #include <crypto/CHIPCryptoPAL.h>
26 :
27 : #include <lib/core/CHIPError.h>
28 : #include <lib/core/Global.h>
29 : #include <lib/support/CodeUtils.h>
30 : #include <lib/support/ScopedBuffer.h>
31 : #include <lib/support/Span.h>
32 :
33 : using namespace chip::Crypto;
34 : using chip::TestCerts::GetTestPaaRootStore;
35 :
36 : namespace chip {
37 : namespace Credentials {
38 :
39 : namespace {
40 :
41 : // As per specifications section 11.22.5.1. Constant RESP_MAX
42 : constexpr size_t kMaxResponseLength = 900;
43 :
44 : // Test CD Signing Key from `credentials/test/certification-declaration/Chip-Test-CD-Signing-Cert.pem`
45 : // used to verify any in-SDK development CDs. The associated keypair to do actual signing is in
46 : // `credentials/test/certification-declaration/Chip-Test-CD-Signing-Key.pem`.
47 : //
48 : // Note that this certificate is a self signed certificate and doesn't chain up to the CSA trusted root.
49 : // This CD Signing certificate can only be used to sign CDs for testing/development purposes
50 : // and should never be used in production devices.
51 : //
52 : // -----BEGIN CERTIFICATE-----
53 : // MIIBszCCAVqgAwIBAgIIRdrzneR6oI8wCgYIKoZIzj0EAwIwKzEpMCcGA1UEAwwg
54 : // TWF0dGVyIFRlc3QgQ0QgU2lnbmluZyBBdXRob3JpdHkwIBcNMjEwNjI4MTQyMzQz
55 : // WhgPOTk5OTEyMzEyMzU5NTlaMCsxKTAnBgNVBAMMIE1hdHRlciBUZXN0IENEIFNp
56 : // Z25pbmcgQXV0aG9yaXR5MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEPDmJIkUr
57 : // VcrzicJb0bykZWlSzLkOiGkkmthHRlMBTL+V1oeWXgNrUhxRA35rjO3vyh60QEZp
58 : // T6CIgu7WUZ3suqNmMGQwEgYDVR0TAQH/BAgwBgEB/wIBATAOBgNVHQ8BAf8EBAMC
59 : // AQYwHQYDVR0OBBYEFGL6gjNZrPqplj4c+hQK3fUE83FgMB8GA1UdIwQYMBaAFGL6
60 : // gjNZrPqplj4c+hQK3fUE83FgMAoGCCqGSM49BAMCA0cAMEQCICxUXOTkV9im8NnZ
61 : // u+vW7OHd/n+MbZps83UyH8b6xxOEAiBUB3jodDlyUn7t669YaGIgtUB48s1OYqdq
62 : // 58u5L/VMiw==
63 : // -----END CERTIFICATE-----
64 : //
65 : constexpr uint8_t gTestCdPubkeyBytes[] = {
66 : 0x04, 0x3c, 0x39, 0x89, 0x22, 0x45, 0x2b, 0x55, 0xca, 0xf3, 0x89, 0xc2, 0x5b, 0xd1, 0xbc, 0xa4, 0x65,
67 : 0x69, 0x52, 0xcc, 0xb9, 0x0e, 0x88, 0x69, 0x24, 0x9a, 0xd8, 0x47, 0x46, 0x53, 0x01, 0x4c, 0xbf, 0x95,
68 : 0xd6, 0x87, 0x96, 0x5e, 0x03, 0x6b, 0x52, 0x1c, 0x51, 0x03, 0x7e, 0x6b, 0x8c, 0xed, 0xef, 0xca, 0x1e,
69 : 0xb4, 0x40, 0x46, 0x69, 0x4f, 0xa0, 0x88, 0x82, 0xee, 0xd6, 0x51, 0x9d, 0xec, 0xba,
70 : };
71 :
72 : constexpr uint8_t gTestCdPubkeyKid[] = {
73 : 0x62, 0xfa, 0x82, 0x33, 0x59, 0xac, 0xfa, 0xa9, 0x96, 0x3e, 0x1c, 0xfa, 0x14, 0x0a, 0xdd, 0xf5, 0x04, 0xf3, 0x71, 0x60,
74 : };
75 :
76 : // Official CSA "Matter Certification and Testing CA"
77 : //
78 : // -----BEGIN CERTIFICATE-----
79 : // MIICATCCAaegAwIBAgIHY3Nhcm9vdDAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
80 : // U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
81 : // MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjA3MDcxOTI4MDRaGA8yMTIyMDYx
82 : // MzE5MjgwNFowUjEMMAoGA1UECgwDQ1NBMSwwKgYDVQQDDCNNYXR0ZXIgQ2VydGlm
83 : // aWNhdGlvbiBhbmQgVGVzdGluZyBDQTEUMBIGCisGAQQBgqJ8AgEMBEM1QTAwWTAT
84 : // BgcqhkjOPQIBBggqhkjOPQMBBwNCAAQ4SjrDql2+y3IP5iEdPK1IYm/3EaCkkp+t
85 : // 2GD44nf/wN4fPrYzejSEe1o6BW6ocQ6Td+7t7iUXA/3ZNQEly45Io2YwZDASBgNV
86 : // HRMBAf8ECDAGAQH/AgEBMA4GA1UdDwEB/wQEAwIBBjAdBgNVHQ4EFgQUl+Rp0MUE
87 : // FMJvxwH3fpR3OQmN9qUwHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3OQmN9qUw
88 : // CgYIKoZIzj0EAwIDSAAwRQIgearlB0fCJ49UoJ6xwKPdlPEopCOL9jVCviODEleI
89 : // +mQCIQDvvDCKi7kvj4R4BoFS4BVZGCk4zJ84W4tfTTfu89lRbQ==
90 : // -----END CERTIFICATE-----
91 : //
92 : constexpr uint8_t gCdRootCert[] = {
93 : 0x30, 0x82, 0x02, 0x01, 0x30, 0x82, 0x01, 0xa7, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x07, 0x63, 0x73, 0x61, 0x72, 0x6f, 0x6f,
94 : 0x74, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x30, 0x52, 0x31, 0x0c, 0x30, 0x0a, 0x06, 0x03,
95 : 0x55, 0x04, 0x0a, 0x0c, 0x03, 0x43, 0x53, 0x41, 0x31, 0x2c, 0x30, 0x2a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x23, 0x4d, 0x61,
96 : 0x74, 0x74, 0x65, 0x72, 0x20, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x61, 0x6e,
97 : 0x64, 0x20, 0x54, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x67, 0x20, 0x43, 0x41, 0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01,
98 : 0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c, 0x04, 0x43, 0x35, 0x41, 0x30, 0x30, 0x20, 0x17, 0x0d, 0x32, 0x32, 0x30, 0x37,
99 : 0x30, 0x37, 0x31, 0x39, 0x32, 0x38, 0x30, 0x34, 0x5a, 0x18, 0x0f, 0x32, 0x31, 0x32, 0x32, 0x30, 0x36, 0x31, 0x33, 0x31, 0x39,
100 : 0x32, 0x38, 0x30, 0x34, 0x5a, 0x30, 0x52, 0x31, 0x0c, 0x30, 0x0a, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x03, 0x43, 0x53, 0x41,
101 : 0x31, 0x2c, 0x30, 0x2a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x23, 0x4d, 0x61, 0x74, 0x74, 0x65, 0x72, 0x20, 0x43, 0x65, 0x72,
102 : 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x54, 0x65, 0x73, 0x74, 0x69, 0x6e,
103 : 0x67, 0x20, 0x43, 0x41, 0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01, 0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c,
104 : 0x04, 0x43, 0x35, 0x41, 0x30, 0x30, 0x59, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02, 0x01, 0x06, 0x08, 0x2a,
105 : 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0x03, 0x42, 0x00, 0x04, 0x38, 0x4a, 0x3a, 0xc3, 0xaa, 0x5d, 0xbe, 0xcb, 0x72, 0x0f,
106 : 0xe6, 0x21, 0x1d, 0x3c, 0xad, 0x48, 0x62, 0x6f, 0xf7, 0x11, 0xa0, 0xa4, 0x92, 0x9f, 0xad, 0xd8, 0x60, 0xf8, 0xe2, 0x77, 0xff,
107 : 0xc0, 0xde, 0x1f, 0x3e, 0xb6, 0x33, 0x7a, 0x34, 0x84, 0x7b, 0x5a, 0x3a, 0x05, 0x6e, 0xa8, 0x71, 0x0e, 0x93, 0x77, 0xee, 0xed,
108 : 0xee, 0x25, 0x17, 0x03, 0xfd, 0xd9, 0x35, 0x01, 0x25, 0xcb, 0x8e, 0x48, 0xa3, 0x66, 0x30, 0x64, 0x30, 0x12, 0x06, 0x03, 0x55,
109 : 0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x08, 0x30, 0x06, 0x01, 0x01, 0xff, 0x02, 0x01, 0x01, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x1d,
110 : 0x0f, 0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x01, 0x06, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16, 0x04, 0x14,
111 : 0x97, 0xe4, 0x69, 0xd0, 0xc5, 0x04, 0x14, 0xc2, 0x6f, 0xc7, 0x01, 0xf7, 0x7e, 0x94, 0x77, 0x39, 0x09, 0x8d, 0xf6, 0xa5, 0x30,
112 : 0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16, 0x80, 0x14, 0x97, 0xe4, 0x69, 0xd0, 0xc5, 0x04, 0x14, 0xc2, 0x6f,
113 : 0xc7, 0x01, 0xf7, 0x7e, 0x94, 0x77, 0x39, 0x09, 0x8d, 0xf6, 0xa5, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04,
114 : 0x03, 0x02, 0x03, 0x48, 0x00, 0x30, 0x45, 0x02, 0x20, 0x79, 0xaa, 0xe5, 0x07, 0x47, 0xc2, 0x27, 0x8f, 0x54, 0xa0, 0x9e, 0xb1,
115 : 0xc0, 0xa3, 0xdd, 0x94, 0xf1, 0x28, 0xa4, 0x23, 0x8b, 0xf6, 0x35, 0x42, 0xbe, 0x23, 0x83, 0x12, 0x57, 0x88, 0xfa, 0x64, 0x02,
116 : 0x21, 0x00, 0xef, 0xbc, 0x30, 0x8a, 0x8b, 0xb9, 0x2f, 0x8f, 0x84, 0x78, 0x06, 0x81, 0x52, 0xe0, 0x15, 0x59, 0x18, 0x29, 0x38,
117 : 0xcc, 0x9f, 0x38, 0x5b, 0x8b, 0x5f, 0x4d, 0x37, 0xee, 0xf3, 0xd9, 0x51, 0x6d
118 : };
119 :
120 : // Official CD "Signing Key 001"
121 : //
122 : // -----BEGIN CERTIFICATE-----
123 : // MIICBzCCAa2gAwIBAgIHY3NhY2RrMTAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
124 : // U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
125 : // MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTI4NTVaGA8yMDcyMDky
126 : // MDE5Mjg1NVowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
127 : // IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwMTEUMBIGCisGAQQBgqJ8AgEMBEM1
128 : // QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAATN7uk+RPi3K+PRqcB+IZaLmv/z
129 : // tAPwXhZp17Hlyu5vx3FLQufiNpXpLNdjVHOigK5ojze7lInhFim5uU/3sJkpo2Yw
130 : // ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
131 : // /jQ/lZlHdjth7kU5ExM4SU/mfY4wHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
132 : // OQmN9qUwCgYIKoZIzj0EAwIDSAAwRQIgEDWOcdKsVGtUh3evHbBd1lq4aS7yQtOp
133 : // 6GrOQ3/zXBsCIQDxorh2RXSaI8m2RCcoWaiWa0nLzQepNm3C2jrQVJmC2Q==
134 : // -----END CERTIFICATE-----
135 : //
136 : constexpr uint8_t gCdSigningKey001PubkeyBytes[] = {
137 : 0x04, 0xcd, 0xee, 0xe9, 0x3e, 0x44, 0xf8, 0xb7, 0x2b, 0xe3, 0xd1, 0xa9, 0xc0, 0x7e, 0x21, 0x96, 0x8b,
138 : 0x9a, 0xff, 0xf3, 0xb4, 0x03, 0xf0, 0x5e, 0x16, 0x69, 0xd7, 0xb1, 0xe5, 0xca, 0xee, 0x6f, 0xc7, 0x71,
139 : 0x4b, 0x42, 0xe7, 0xe2, 0x36, 0x95, 0xe9, 0x2c, 0xd7, 0x63, 0x54, 0x73, 0xa2, 0x80, 0xae, 0x68, 0x8f,
140 : 0x37, 0xbb, 0x94, 0x89, 0xe1, 0x16, 0x29, 0xb9, 0xb9, 0x4f, 0xf7, 0xb0, 0x99, 0x29,
141 : };
142 :
143 : constexpr uint8_t gCdSigningKey001Kid[] = {
144 : 0xFE, 0x34, 0x3F, 0x95, 0x99, 0x47, 0x76, 0x3B, 0x61, 0xEE, 0x45, 0x39, 0x13, 0x13, 0x38, 0x49, 0x4F, 0xE6, 0x7D, 0x8E,
145 : };
146 :
147 : // Official CD "Signing Key 002"
148 : //
149 : // -----BEGIN CERTIFICATE-----
150 : // MIICCDCCAa2gAwIBAgIHY3NhY2RrMjAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
151 : // U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
152 : // MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTM2NDZaGA8yMDcyMDky
153 : // MDE5MzY0NlowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
154 : // IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwMjEUMBIGCisGAQQBgqJ8AgEMBEM1
155 : // QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAAQDGTfo+UJRBF3ydFe7RiU+43VO
156 : // jBKuKFV9gCe51MNW2RtAjP8yJ1AXsl+Mi6IFFtXIOvK3JBKAE9/Mj5XSAKkLo2Yw
157 : // ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
158 : // 3QTbWFshTBxYFYfmVo30h7bdxwEwHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
159 : // OQmN9qUwCgYIKoZIzj0EAwIDSQAwRgIhAJruzxZ806cP/LoQ07PN9xAbjLdwUalV
160 : // h0Qfx304Tb92AiEAk+jnf2qtyfKyTEHpT3Xf3bfekqUOA+8ikB1yjL5oTsI=
161 : // -----END CERTIFICATE-----
162 : //
163 : constexpr uint8_t gCdSigningKey002PubkeyBytes[] = {
164 : 0x04, 0x03, 0x19, 0x37, 0xe8, 0xf9, 0x42, 0x51, 0x04, 0x5d, 0xf2, 0x74, 0x57, 0xbb, 0x46, 0x25, 0x3e,
165 : 0xe3, 0x75, 0x4e, 0x8c, 0x12, 0xae, 0x28, 0x55, 0x7d, 0x80, 0x27, 0xb9, 0xd4, 0xc3, 0x56, 0xd9, 0x1b,
166 : 0x40, 0x8c, 0xff, 0x32, 0x27, 0x50, 0x17, 0xb2, 0x5f, 0x8c, 0x8b, 0xa2, 0x05, 0x16, 0xd5, 0xc8, 0x3a,
167 : 0xf2, 0xb7, 0x24, 0x12, 0x80, 0x13, 0xdf, 0xcc, 0x8f, 0x95, 0xd2, 0x00, 0xa9, 0x0b,
168 : };
169 :
170 : constexpr uint8_t gCdSigningKey002Kid[] = {
171 : 0xDD, 0x04, 0xDB, 0x58, 0x5B, 0x21, 0x4C, 0x1C, 0x58, 0x15, 0x87, 0xE6, 0x56, 0x8D, 0xF4, 0x87, 0xB6, 0xDD, 0xC7, 0x01,
172 : };
173 :
174 : // Official CD "Signing Key 003"
175 : //
176 : // -----BEGIN CERTIFICATE-----
177 : // MIICBjCCAa2gAwIBAgIHY3NhY2RrMzAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
178 : // U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
179 : // MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTQxMDFaGA8yMDcyMDky
180 : // MDE5NDEwMVowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
181 : // IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwMzEUMBIGCisGAQQBgqJ8AgEMBEM1
182 : // QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAASfV1zV/bdSHxCk3zHwc5ErYUco
183 : // 8tN/W2uWvCy/fAsRlpBXfVVdIaCWYKiwgqM56lMPeoEthpO1b9dkGF+rzTL1o2Yw
184 : // ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
185 : // RxA158BOqqi+fE1ME+PkwgmVqEswHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
186 : // OQmN9qUwCgYIKoZIzj0EAwIDRwAwRAIgIFecbY+1mVVNqxH9+8IMB8+safdyIJU2
187 : // AqqtZ/w7AkQCIHiVlYTaCnJsnW5/cvj9GfIv7Eb0cjdmcAkrYGbnPQzX
188 : // -----END CERTIFICATE-----
189 : //
190 : constexpr uint8_t gCdSigningKey003PubkeyBytes[] = {
191 : 0x04, 0x9f, 0x57, 0x5c, 0xd5, 0xfd, 0xb7, 0x52, 0x1f, 0x10, 0xa4, 0xdf, 0x31, 0xf0, 0x73, 0x91, 0x2b,
192 : 0x61, 0x47, 0x28, 0xf2, 0xd3, 0x7f, 0x5b, 0x6b, 0x96, 0xbc, 0x2c, 0xbf, 0x7c, 0x0b, 0x11, 0x96, 0x90,
193 : 0x57, 0x7d, 0x55, 0x5d, 0x21, 0xa0, 0x96, 0x60, 0xa8, 0xb0, 0x82, 0xa3, 0x39, 0xea, 0x53, 0x0f, 0x7a,
194 : 0x81, 0x2d, 0x86, 0x93, 0xb5, 0x6f, 0xd7, 0x64, 0x18, 0x5f, 0xab, 0xcd, 0x32, 0xf5,
195 : };
196 :
197 : constexpr uint8_t gCdSigningKey003Kid[] = {
198 : 0x47, 0x10, 0x35, 0xE7, 0xC0, 0x4E, 0xAA, 0xA8, 0xBE, 0x7C, 0x4D, 0x4C, 0x13, 0xE3, 0xE4, 0xC2, 0x09, 0x95, 0xA8, 0x4B,
199 : };
200 :
201 : // Official CD "Signing Key 004"
202 : //
203 : // -----BEGIN CERTIFICATE-----
204 : // MIICBjCCAa2gAwIBAgIHY3NhY2RrNDAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
205 : // U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
206 : // MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTQzMjFaGA8yMDcyMDky
207 : // MDE5NDMyMVowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
208 : // IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwNDEUMBIGCisGAQQBgqJ8AgEMBEM1
209 : // QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAAR8/I2IEKic9PoZF3jyr+x4+FF6
210 : // l6Plf8ITutiI42EedP+2hL3rqKaLJSNKXDWPNzurm20wThMG3XYgpSjRFhwLo2Yw
211 : // ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
212 : // 9oYDo2kumBByQZ6h4as4VL13ldMwHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
213 : // OQmN9qUwCgYIKoZIzj0EAwIDRwAwRAIgLqAfkbtLYYdmQsnbn0CWv3G1/lbE36nz
214 : // HbLbW5t6PY4CIE8oyIHsVhNSTPcb3mwRp+Vxhs8tKhbAdwv5BGgDaAHj
215 : // -----END CERTIFICATE-----
216 : //
217 : constexpr uint8_t gCdSigningKey004PubkeyBytes[] = {
218 : 0x04, 0x7c, 0xfc, 0x8d, 0x88, 0x10, 0xa8, 0x9c, 0xf4, 0xfa, 0x19, 0x17, 0x78, 0xf2, 0xaf, 0xec, 0x78,
219 : 0xf8, 0x51, 0x7a, 0x97, 0xa3, 0xe5, 0x7f, 0xc2, 0x13, 0xba, 0xd8, 0x88, 0xe3, 0x61, 0x1e, 0x74, 0xff,
220 : 0xb6, 0x84, 0xbd, 0xeb, 0xa8, 0xa6, 0x8b, 0x25, 0x23, 0x4a, 0x5c, 0x35, 0x8f, 0x37, 0x3b, 0xab, 0x9b,
221 : 0x6d, 0x30, 0x4e, 0x13, 0x06, 0xdd, 0x76, 0x20, 0xa5, 0x28, 0xd1, 0x16, 0x1c, 0x0b,
222 : };
223 :
224 : constexpr uint8_t gCdSigningKey004Kid[] = {
225 : 0xF6, 0x86, 0x03, 0xA3, 0x69, 0x2E, 0x98, 0x10, 0x72, 0x41, 0x9E, 0xA1, 0xE1, 0xAB, 0x38, 0x54, 0xBD, 0x77, 0x95, 0xD3,
226 : };
227 :
228 : // Official CD "Signing Key 005"
229 : //
230 : // -----BEGIN CERTIFICATE-----
231 : // MIICBzCCAa2gAwIBAgIHY3NhY2RrNTAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
232 : // U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
233 : // MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTQ3MTVaGA8yMDcyMDky
234 : // MDE5NDcxNVowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
235 : // IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwNTEUMBIGCisGAQQBgqJ8AgEMBEM1
236 : // QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAARDilLGYqKm1yZH+V63UxNu5K4P
237 : // 2zqpwWkxQms9CGf5EDrn16G4h+n4E6byb3a7zak1k3h8EneMqPKXXcRaIEL5o2Yw
238 : // ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
239 : // Y38mNK1i6v5q9mLvuW9v0vy//C8wHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
240 : // OQmN9qUwCgYIKoZIzj0EAwIDSAAwRQIhAM1HQpvkHKxLJByWaSYAPRZgh3Bis18W
241 : // AViq7c/mtzEAAiBZO0lVe6Qo9iQPIBWZaVx/S/YSNO9uKNa/pvFu3V+nIg==
242 : // -----END CERTIFICATE-----
243 : //
244 : constexpr uint8_t gCdSigningKey005PubkeyBytes[] = {
245 : 0x04, 0x43, 0x8a, 0x52, 0xc6, 0x62, 0xa2, 0xa6, 0xd7, 0x26, 0x47, 0xf9, 0x5e, 0xb7, 0x53, 0x13, 0x6e,
246 : 0xe4, 0xae, 0x0f, 0xdb, 0x3a, 0xa9, 0xc1, 0x69, 0x31, 0x42, 0x6b, 0x3d, 0x08, 0x67, 0xf9, 0x10, 0x3a,
247 : 0xe7, 0xd7, 0xa1, 0xb8, 0x87, 0xe9, 0xf8, 0x13, 0xa6, 0xf2, 0x6f, 0x76, 0xbb, 0xcd, 0xa9, 0x35, 0x93,
248 : 0x78, 0x7c, 0x12, 0x77, 0x8c, 0xa8, 0xf2, 0x97, 0x5d, 0xc4, 0x5a, 0x20, 0x42, 0xf9,
249 : };
250 :
251 : constexpr uint8_t gCdSigningKey005Kid[] = {
252 : 0x63, 0x7F, 0x26, 0x34, 0xAD, 0x62, 0xEA, 0xFE, 0x6A, 0xF6, 0x62, 0xEF, 0xB9, 0x6F, 0x6F, 0xD2, 0xFC, 0xBF, 0xFC, 0x2F,
253 : };
254 :
255 : struct MatterCDSigningKey
256 : {
257 : const CertificateKeyId mKid;
258 : const P256PublicKeySpan mPubkey;
259 : };
260 :
261 : constexpr std::array<MatterCDSigningKey, 6> gCdSigningKeys = { {
262 : { FixedByteSpan<20>{ gTestCdPubkeyKid }, FixedByteSpan<65>{ gTestCdPubkeyBytes } },
263 : { FixedByteSpan<20>{ gCdSigningKey001Kid }, FixedByteSpan<65>{ gCdSigningKey001PubkeyBytes } },
264 : { FixedByteSpan<20>{ gCdSigningKey002Kid }, FixedByteSpan<65>{ gCdSigningKey002PubkeyBytes } },
265 : { FixedByteSpan<20>{ gCdSigningKey003Kid }, FixedByteSpan<65>{ gCdSigningKey003PubkeyBytes } },
266 : { FixedByteSpan<20>{ gCdSigningKey004Kid }, FixedByteSpan<65>{ gCdSigningKey004PubkeyBytes } },
267 : { FixedByteSpan<20>{ gCdSigningKey005Kid }, FixedByteSpan<65>{ gCdSigningKey005PubkeyBytes } },
268 : } };
269 :
270 : struct TestAttestationTrustStore final : public ArrayAttestationTrustStore
271 : {
272 3 : TestAttestationTrustStore() : ArrayAttestationTrustStore(GetTestPaaRootStore().data(), GetTestPaaRootStore().size()) {}
273 : };
274 : Global<TestAttestationTrustStore> gTestAttestationTrustStore;
275 :
276 0 : AttestationVerificationResult MapError(CertificateChainValidationResult certificateChainValidationResult)
277 : {
278 0 : switch (certificateChainValidationResult)
279 : {
280 0 : case CertificateChainValidationResult::kRootFormatInvalid:
281 0 : return AttestationVerificationResult::kPaaFormatInvalid;
282 :
283 0 : case CertificateChainValidationResult::kRootArgumentInvalid:
284 0 : return AttestationVerificationResult::kPaaArgumentInvalid;
285 :
286 0 : case CertificateChainValidationResult::kICAFormatInvalid:
287 0 : return AttestationVerificationResult::kPaiFormatInvalid;
288 :
289 0 : case CertificateChainValidationResult::kICAArgumentInvalid:
290 0 : return AttestationVerificationResult::kPaiArgumentInvalid;
291 :
292 0 : case CertificateChainValidationResult::kLeafFormatInvalid:
293 0 : return AttestationVerificationResult::kDacFormatInvalid;
294 :
295 0 : case CertificateChainValidationResult::kLeafArgumentInvalid:
296 0 : return AttestationVerificationResult::kDacArgumentInvalid;
297 :
298 0 : case CertificateChainValidationResult::kChainInvalid:
299 0 : return AttestationVerificationResult::kDacSignatureInvalid;
300 :
301 0 : case CertificateChainValidationResult::kNoMemory:
302 0 : return AttestationVerificationResult::kNoMemory;
303 :
304 0 : case CertificateChainValidationResult::kInternalFrameworkError:
305 0 : return AttestationVerificationResult::kInternalError;
306 :
307 0 : default:
308 0 : return AttestationVerificationResult::kInternalError;
309 : }
310 : }
311 : } // namespace
312 :
313 153 : void DefaultDACVerifier::VerifyAttestationInformation(const DeviceAttestationVerifier::AttestationInfo & info,
314 : Callback::Callback<OnAttestationInformationVerification> * onCompletion)
315 : {
316 153 : AttestationVerificationResult attestationError = AttestationVerificationResult::kSuccess;
317 :
318 153 : Platform::ScopedMemoryBuffer<uint8_t> paaCert;
319 153 : MutableByteSpan paaDerBuffer;
320 153 : AttestationCertVidPid dacVidPid;
321 153 : AttestationCertVidPid paiVidPid;
322 153 : AttestationCertVidPid paaVidPid;
323 :
324 153 : VerifyOrExit(!info.attestationElementsBuffer.empty() && !info.attestationChallengeBuffer.empty() &&
325 : !info.attestationSignatureBuffer.empty() && !info.dacDerBuffer.empty() &&
326 : !info.attestationNonceBuffer.empty() && onCompletion != nullptr,
327 : attestationError = AttestationVerificationResult::kInvalidArgument);
328 :
329 153 : VerifyOrExit(info.attestationElementsBuffer.size() <= kMaxResponseLength,
330 : attestationError = AttestationVerificationResult::kInvalidArgument);
331 :
332 : // Ensure PAI is present
333 153 : VerifyOrExit(!info.paiDerBuffer.empty(), attestationError = AttestationVerificationResult::kPaiMissing);
334 :
335 : // Validate Proper Certificate Format
336 : {
337 153 : VerifyOrExit(VerifyAttestationCertificateFormat(info.paiDerBuffer, AttestationCertType::kPAI) == CHIP_NO_ERROR,
338 : attestationError = AttestationVerificationResult::kPaiFormatInvalid);
339 135 : VerifyOrExit(VerifyAttestationCertificateFormat(info.dacDerBuffer, AttestationCertType::kDAC) == CHIP_NO_ERROR,
340 : attestationError = AttestationVerificationResult::kDacFormatInvalid);
341 : }
342 :
343 : // match DAC and PAI VIDs
344 : {
345 116 : VerifyOrExit(ExtractVIDPIDFromX509Cert(info.dacDerBuffer, dacVidPid) == CHIP_NO_ERROR,
346 : attestationError = AttestationVerificationResult::kDacFormatInvalid);
347 109 : VerifyOrExit(ExtractVIDPIDFromX509Cert(info.paiDerBuffer, paiVidPid) == CHIP_NO_ERROR,
348 : attestationError = AttestationVerificationResult::kPaiFormatInvalid);
349 102 : VerifyOrExit(paiVidPid.mVendorId.HasValue() && paiVidPid.mVendorId == dacVidPid.mVendorId,
350 : attestationError = AttestationVerificationResult::kDacVendorIdMismatch);
351 93 : VerifyOrExit(dacVidPid.mProductId.HasValue(), attestationError = AttestationVerificationResult::kDacProductIdMismatch);
352 93 : if (paiVidPid.mProductId.HasValue())
353 : {
354 71 : VerifyOrExit(paiVidPid.mProductId == dacVidPid.mProductId,
355 : attestationError = AttestationVerificationResult::kDacProductIdMismatch);
356 : }
357 : }
358 :
359 : {
360 93 : P256PublicKey remoteManufacturerPubkey;
361 93 : P256ECDSASignature deviceSignature;
362 :
363 93 : VerifyOrExit(ExtractPubkeyFromX509Cert(info.dacDerBuffer, remoteManufacturerPubkey) == CHIP_NO_ERROR,
364 : attestationError = AttestationVerificationResult::kDacFormatInvalid);
365 :
366 : // Validate overall attestation signature on attestation information
367 : // SetLength will fail if signature doesn't fit
368 93 : VerifyOrExit(deviceSignature.SetLength(info.attestationSignatureBuffer.size()) == CHIP_NO_ERROR,
369 : attestationError = AttestationVerificationResult::kAttestationSignatureInvalidFormat);
370 93 : memcpy(deviceSignature.Bytes(), info.attestationSignatureBuffer.data(), info.attestationSignatureBuffer.size());
371 93 : VerifyOrExit(ValidateAttestationSignature(remoteManufacturerPubkey, info.attestationElementsBuffer,
372 : info.attestationChallengeBuffer, deviceSignature) == CHIP_NO_ERROR,
373 : attestationError = AttestationVerificationResult::kAttestationSignatureInvalid);
374 93 : }
375 :
376 : {
377 : uint8_t akidBuf[Crypto::kAuthorityKeyIdentifierLength];
378 93 : MutableByteSpan akid(akidBuf);
379 93 : constexpr size_t paaCertAllocatedLen = kMaxDERCertLength;
380 93 : CHIP_ERROR err = CHIP_NO_ERROR;
381 :
382 95 : VerifyOrExit(ExtractAKIDFromX509Cert(info.paiDerBuffer, akid) == CHIP_NO_ERROR,
383 : attestationError = AttestationVerificationResult::kPaiFormatInvalid);
384 :
385 93 : VerifyOrExit(paaCert.Alloc(paaCertAllocatedLen), attestationError = AttestationVerificationResult::kNoMemory);
386 :
387 93 : paaDerBuffer = MutableByteSpan(paaCert.Get(), paaCertAllocatedLen);
388 93 : err = mAttestationTrustStore->GetProductAttestationAuthorityCert(akid, paaDerBuffer);
389 93 : VerifyOrExit(err == CHIP_NO_ERROR || err == CHIP_ERROR_NOT_IMPLEMENTED,
390 : attestationError = AttestationVerificationResult::kPaaNotFound);
391 :
392 92 : if (err == CHIP_ERROR_NOT_IMPLEMENTED)
393 : {
394 0 : VerifyOrExit(gTestAttestationTrustStore->GetProductAttestationAuthorityCert(akid, paaDerBuffer) == CHIP_NO_ERROR,
395 : attestationError = AttestationVerificationResult::kPaaNotFound);
396 : }
397 :
398 92 : VerifyOrExit(ExtractVIDPIDFromX509Cert(paaDerBuffer, paaVidPid) == CHIP_NO_ERROR,
399 : attestationError = AttestationVerificationResult::kPaaFormatInvalid);
400 :
401 92 : if (paaVidPid.mVendorId.HasValue())
402 : {
403 91 : VerifyOrExit(paaVidPid.mVendorId == paiVidPid.mVendorId,
404 : attestationError = AttestationVerificationResult::kPaiVendorIdMismatch);
405 : }
406 :
407 91 : VerifyOrExit(!paaVidPid.mProductId.HasValue(), attestationError = AttestationVerificationResult::kPaaFormatInvalid);
408 : }
409 :
410 : #if !defined(CURRENT_TIME_NOT_IMPLEMENTED)
411 91 : VerifyOrExit(IsCertificateValidAtCurrentTime(info.dacDerBuffer) == CHIP_NO_ERROR,
412 : attestationError = AttestationVerificationResult::kDacExpired);
413 : #endif
414 :
415 : CertificateChainValidationResult chainValidationResult;
416 87 : VerifyOrExit(ValidateCertificateChain(paaDerBuffer.data(), paaDerBuffer.size(), info.paiDerBuffer.data(),
417 : info.paiDerBuffer.size(), info.dacDerBuffer.data(), info.dacDerBuffer.size(),
418 : chainValidationResult) == CHIP_NO_ERROR,
419 : attestationError = MapError(chainValidationResult));
420 :
421 : {
422 87 : ByteSpan certificationDeclarationSpan;
423 87 : ByteSpan attestationNonceSpan;
424 : uint32_t timestampDeconstructed;
425 87 : ByteSpan firmwareInfoSpan;
426 87 : DeviceAttestationVendorReservedDeconstructor vendorReserved;
427 87 : ByteSpan certificationDeclarationPayload;
428 :
429 87 : DeviceInfoForAttestation deviceInfo{
430 87 : .vendorId = info.vendorId,
431 87 : .productId = info.productId,
432 174 : .dacVendorId = dacVidPid.mVendorId.Value(),
433 174 : .dacProductId = dacVidPid.mProductId.Value(),
434 174 : .paiVendorId = paiVidPid.mVendorId.Value(),
435 174 : .paiProductId = paiVidPid.mProductId.ValueOr(0),
436 174 : .paaVendorId = paaVidPid.mVendorId.ValueOr(VendorId::NotSpecified),
437 87 : };
438 :
439 87 : MutableByteSpan paaSKID(deviceInfo.paaSKID);
440 121 : VerifyOrExit(ExtractSKIDFromX509Cert(paaDerBuffer, paaSKID) == CHIP_NO_ERROR,
441 : attestationError = AttestationVerificationResult::kPaaFormatInvalid);
442 87 : VerifyOrExit(paaSKID.size() == sizeof(deviceInfo.paaSKID),
443 : attestationError = AttestationVerificationResult::kPaaFormatInvalid);
444 :
445 87 : VerifyOrExit(DeconstructAttestationElements(info.attestationElementsBuffer, certificationDeclarationSpan,
446 : attestationNonceSpan, timestampDeconstructed, firmwareInfoSpan,
447 : vendorReserved) == CHIP_NO_ERROR,
448 : attestationError = AttestationVerificationResult::kAttestationElementsMalformed);
449 :
450 : // Verify that Nonce matches with what we sent
451 87 : VerifyOrExit(attestationNonceSpan.data_equal(info.attestationNonceBuffer),
452 : attestationError = AttestationVerificationResult::kAttestationNonceMismatch);
453 :
454 87 : attestationError = ValidateCertificationDeclarationSignature(certificationDeclarationSpan, certificationDeclarationPayload);
455 87 : VerifyOrExit(attestationError == AttestationVerificationResult::kSuccess, attestationError = attestationError);
456 :
457 79 : attestationError = ValidateCertificateDeclarationPayload(certificationDeclarationPayload, firmwareInfoSpan, deviceInfo);
458 79 : VerifyOrExit(attestationError == AttestationVerificationResult::kSuccess, attestationError = attestationError);
459 : }
460 :
461 153 : exit:
462 153 : onCompletion->mCall(onCompletion->mContext, info, attestationError);
463 153 : }
464 :
465 88 : AttestationVerificationResult DefaultDACVerifier::ValidateCertificationDeclarationSignature(const ByteSpan & cmsEnvelopeBuffer,
466 : ByteSpan & certDeclBuffer)
467 : {
468 88 : ByteSpan kid;
469 88 : VerifyOrReturnError(CMS_ExtractKeyId(cmsEnvelopeBuffer, kid) == CHIP_NO_ERROR,
470 : AttestationVerificationResult::kCertificationDeclarationNoKeyId);
471 :
472 85 : Crypto::P256PublicKey verifyingKey;
473 85 : CHIP_ERROR err = mCdKeysTrustStore.LookupVerifyingKey(kid, verifyingKey);
474 85 : VerifyOrReturnError(err == CHIP_NO_ERROR, AttestationVerificationResult::kCertificationDeclarationNoCertificateFound);
475 :
476 : // Disallow test key if support not enabled
477 84 : if (mCdKeysTrustStore.IsCdTestKey(kid) && !IsCdTestKeySupported())
478 : {
479 0 : return AttestationVerificationResult::kCertificationDeclarationNoCertificateFound;
480 : }
481 :
482 84 : VerifyOrReturnError(CMS_Verify(cmsEnvelopeBuffer, verifyingKey, certDeclBuffer) == CHIP_NO_ERROR,
483 : AttestationVerificationResult::kCertificationDeclarationInvalidSignature);
484 :
485 80 : return AttestationVerificationResult::kSuccess;
486 85 : }
487 :
488 80 : AttestationVerificationResult DefaultDACVerifier::ValidateCertificateDeclarationPayload(const ByteSpan & certDeclBuffer,
489 : const ByteSpan & firmwareInfo,
490 : const DeviceInfoForAttestation & deviceInfo)
491 : {
492 80 : CertificationElementsWithoutPIDs cdContent;
493 80 : CertificationElementsDecoder cdElementsDecoder;
494 80 : VerifyOrReturnError(DecodeCertificationElements(certDeclBuffer, cdContent) == CHIP_NO_ERROR,
495 : AttestationVerificationResult::kCertificationDeclarationInvalidFormat);
496 :
497 68 : if (!firmwareInfo.empty())
498 : {
499 : // TODO: validate contents based on DCL
500 : }
501 :
502 : // Verify the cd elements are as required by the spec
503 : // security_level, security_information are meant to be ignored. version_number is not meant to be interpreted by the
504 : // commissioners.
505 68 : if (cdContent.formatVersion != 1 || cdContent.certificationType >= chip::to_underlying(CertificationType::kReserved))
506 : {
507 2 : return AttestationVerificationResult::kAttestationElementsMalformed;
508 : }
509 :
510 : // The vendor_id field in the Certification Declaration SHALL match the VendorID attribute found in the Basic Information
511 : // cluster
512 66 : VerifyOrReturnError(cdContent.vendorId == deviceInfo.vendorId,
513 : AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
514 :
515 : // The product_id_array field in the Certification Declaration SHALL contain the value of the ProductID attribute found in
516 : // the Basic Information cluster.
517 65 : VerifyOrReturnError(cdElementsDecoder.IsProductIdIn(certDeclBuffer, deviceInfo.productId),
518 : AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
519 :
520 60 : if (cdContent.dacOriginVIDandPIDPresent)
521 : {
522 : // The Vendor ID (VID) subject DN in the DAC SHALL match the dac_origin_vendor_id field in the Certification
523 : // Declaration.
524 4 : VerifyOrReturnError(deviceInfo.dacVendorId == cdContent.dacOriginVendorId,
525 : AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
526 : // The Vendor ID (VID) subject DN in the PAI SHALL match the dac_origin_vendor_id field in the Certification
527 : // Declaration.
528 2 : VerifyOrReturnError(deviceInfo.paiVendorId == cdContent.dacOriginVendorId,
529 : AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
530 : // The Product ID (PID) subject DN in the DAC SHALL match the dac_origin_product_id field in the Certification
531 : // Declaration.
532 2 : VerifyOrReturnError(deviceInfo.dacProductId == cdContent.dacOriginProductId,
533 : AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
534 : // The Product ID (PID) subject DN in the PAI, if such a Product ID is present, SHALL match the dac_origin_product_id
535 : // field in the Certification Declaration.
536 2 : if (deviceInfo.paiProductId != 0) // if PAI PID is present
537 : {
538 2 : VerifyOrReturnError(deviceInfo.paiProductId == cdContent.dacOriginProductId,
539 : AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
540 : }
541 : }
542 : else
543 : {
544 : // The Vendor ID (VID) subject DN in the DAC SHALL match the vendor_id field in the Certification Declaration
545 56 : VerifyOrReturnError(deviceInfo.dacVendorId == cdContent.vendorId,
546 : AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
547 : // The Vendor ID (VID) subject DN in the PAI SHALL match the vendor_id field in the Certification Declaration.
548 56 : VerifyOrReturnError(deviceInfo.paiVendorId == cdContent.vendorId,
549 : AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
550 : // The Product ID (PID) subject DN in the DAC SHALL be present in the product_id_array field in the Certification
551 : // Declaration.
552 56 : VerifyOrReturnError(cdElementsDecoder.IsProductIdIn(certDeclBuffer, deviceInfo.dacProductId),
553 : AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
554 : // The Product ID (PID) subject DN in the PAI, if such a Product ID is present, SHALL match one of the values present in
555 : // the product_id_array field in the Certification Declaration.
556 55 : if (deviceInfo.paiProductId != 0) // if PAI PID is present
557 : {
558 41 : VerifyOrReturnError(cdElementsDecoder.IsProductIdIn(certDeclBuffer, deviceInfo.paiProductId),
559 : AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
560 : }
561 : }
562 :
563 57 : if (cdContent.authorizedPAAListPresent)
564 : {
565 : // The Subject Key Id of the PAA SHALL match one of the values present in the authorized_paa_list
566 : // in the Certification Declaration.
567 6 : VerifyOrReturnError(cdElementsDecoder.HasAuthorizedPAA(certDeclBuffer, ByteSpan(deviceInfo.paaSKID)),
568 : AttestationVerificationResult::kCertificationDeclarationInvalidPAA);
569 : }
570 :
571 54 : return AttestationVerificationResult::kSuccess;
572 : }
573 :
574 2 : CHIP_ERROR DefaultDACVerifier::VerifyNodeOperationalCSRInformation(const ByteSpan & nocsrElementsBuffer,
575 : const ByteSpan & attestationChallengeBuffer,
576 : const ByteSpan & attestationSignatureBuffer,
577 : const P256PublicKey & dacPublicKey, const ByteSpan & csrNonce)
578 : {
579 2 : VerifyOrReturnError(!nocsrElementsBuffer.empty() && !attestationChallengeBuffer.empty() &&
580 : !attestationSignatureBuffer.empty() && !csrNonce.empty(),
581 : CHIP_ERROR_INVALID_ARGUMENT);
582 :
583 2 : VerifyOrReturnError(nocsrElementsBuffer.size() <= kMaxResponseLength, CHIP_ERROR_INVALID_ARGUMENT);
584 2 : VerifyOrReturnError(csrNonce.size() == Controller::kCSRNonceLength, CHIP_ERROR_INVALID_ARGUMENT);
585 :
586 2 : ByteSpan csrSpan;
587 2 : ByteSpan csrNonceSpan;
588 2 : ByteSpan vendorReserved1Span;
589 2 : ByteSpan vendorReserved2Span;
590 2 : ByteSpan vendorReserved3Span;
591 2 : ReturnErrorOnFailure(DeconstructNOCSRElements(nocsrElementsBuffer, csrSpan, csrNonceSpan, vendorReserved1Span,
592 : vendorReserved2Span, vendorReserved3Span));
593 :
594 2 : VerifyOrReturnError(csrNonceSpan.size() == Controller::kCSRNonceLength, CHIP_ERROR_INVALID_ARGUMENT);
595 :
596 : // Verify that Nonce matches with what we sent
597 2 : VerifyOrReturnError(csrNonceSpan.data_equal(csrNonce), CHIP_ERROR_INVALID_ARGUMENT);
598 :
599 : // Validate overall attestation signature on attestation information
600 2 : P256ECDSASignature signature;
601 : // SetLength will fail if signature doesn't fit
602 2 : ReturnErrorOnFailure(signature.SetLength(attestationSignatureBuffer.size()));
603 2 : memcpy(signature.Bytes(), attestationSignatureBuffer.data(), attestationSignatureBuffer.size());
604 :
605 2 : ReturnErrorOnFailure(ValidateAttestationSignature(dacPublicKey, nocsrElementsBuffer, attestationChallengeBuffer, signature));
606 :
607 1 : return CHIP_NO_ERROR;
608 2 : }
609 :
610 0 : void DefaultDACVerifier::CheckForRevokedDACChain(const AttestationInfo & info,
611 : Callback::Callback<OnAttestationInformationVerification> * onCompletion)
612 : {
613 0 : if (mRevocationDelegate != nullptr)
614 : {
615 0 : mRevocationDelegate->CheckForRevokedDACChain(info, onCompletion);
616 : }
617 : else
618 : {
619 0 : onCompletion->mCall(onCompletion->mContext, info, AttestationVerificationResult::kSuccess);
620 : }
621 0 : }
622 :
623 88 : bool CsaCdKeysTrustStore::IsCdTestKey(const ByteSpan & kid) const
624 : {
625 88 : return kid.data_equal(ByteSpan{ gTestCdPubkeyKid });
626 : }
627 :
628 2 : CHIP_ERROR CsaCdKeysTrustStore::AddTrustedKey(const ByteSpan & kid, const Crypto::P256PublicKey & pubKey)
629 : {
630 2 : VerifyOrReturnError(kid.size() <= SingleKeyEntry::kMaxKidSize, CHIP_ERROR_INVALID_ARGUMENT);
631 2 : VerifyOrReturnError(!kid.empty(), CHIP_ERROR_INVALID_ARGUMENT);
632 2 : VerifyOrReturnError(mNumTrustedKeys != kMaxNumTrustedKeys, CHIP_ERROR_NO_MEMORY);
633 :
634 2 : auto & entry = mTrustedKeys[mNumTrustedKeys];
635 :
636 2 : entry.kidSize = kid.size();
637 2 : memcpy(&entry.kidBuffer[0], kid.data(), kid.size());
638 2 : entry.publicKey = pubKey;
639 :
640 2 : ++mNumTrustedKeys;
641 2 : return CHIP_NO_ERROR;
642 : }
643 :
644 2 : CHIP_ERROR CsaCdKeysTrustStore::AddTrustedKey(const ByteSpan & derCertBytes)
645 : {
646 2 : uint8_t kidBuf[Crypto::kSubjectKeyIdentifierLength] = { 0 };
647 2 : MutableByteSpan kidSpan{ kidBuf };
648 2 : P256PublicKey pubKey;
649 :
650 2 : VerifyOrReturnError(CHIP_NO_ERROR == Crypto::ExtractSKIDFromX509Cert(derCertBytes, kidSpan), CHIP_ERROR_INVALID_ARGUMENT);
651 2 : VerifyOrReturnError(CHIP_NO_ERROR == Crypto::ExtractPubkeyFromX509Cert(derCertBytes, pubKey), CHIP_ERROR_INVALID_ARGUMENT);
652 :
653 2 : if (!IsCdTestKey(kidSpan))
654 : {
655 : // Verify cert against CSA CD root of trust.
656 : CertificateChainValidationResult chainValidationResult;
657 2 : VerifyOrReturnError(CHIP_NO_ERROR ==
658 : ValidateCertificateChain(gCdRootCert, sizeof(gCdRootCert), nullptr, 0, derCertBytes.data(),
659 : derCertBytes.size(), chainValidationResult),
660 : CHIP_ERROR_INVALID_ARGUMENT);
661 1 : VerifyOrReturnError(chainValidationResult == CertificateChainValidationResult::kSuccess, CHIP_ERROR_INVALID_ARGUMENT);
662 : }
663 :
664 1 : return AddTrustedKey(kidSpan, pubKey);
665 2 : }
666 :
667 88 : CHIP_ERROR CsaCdKeysTrustStore::LookupVerifyingKey(const ByteSpan & kid, Crypto::P256PublicKey & outPubKey) const
668 : {
669 : // First, search for the well known keys
670 106 : for (auto & cdSigningKey : gCdSigningKeys)
671 : {
672 103 : if (kid.data_equal(cdSigningKey.mKid))
673 : {
674 85 : outPubKey = cdSigningKey.mPubkey;
675 85 : return CHIP_NO_ERROR;
676 : }
677 : }
678 :
679 : // Seconds, search externally added keys
680 3 : for (size_t keyIdx = 0; keyIdx < mNumTrustedKeys; keyIdx++)
681 : {
682 1 : auto & entry = mTrustedKeys[keyIdx];
683 1 : if (kid.data_equal(entry.GetKid()))
684 : {
685 1 : outPubKey = entry.publicKey;
686 1 : return CHIP_NO_ERROR;
687 : }
688 : }
689 :
690 : // If we get here, the desired key was not found
691 2 : return CHIP_ERROR_KEY_NOT_FOUND;
692 : }
693 :
694 5 : const AttestationTrustStore * GetTestAttestationTrustStore()
695 : {
696 5 : return &gTestAttestationTrustStore.get();
697 : }
698 :
699 4 : DeviceAttestationVerifier * GetDefaultDACVerifier(const AttestationTrustStore * paaRootStore,
700 : DeviceAttestationRevocationDelegate * revocationDelegate)
701 : {
702 4 : static DefaultDACVerifier defaultDACVerifier{ paaRootStore, revocationDelegate };
703 :
704 4 : return &defaultDACVerifier;
705 : }
706 :
707 : } // namespace Credentials
708 : } // namespace chip
|
