blob: f3444b0c30394006f6ec923bbe25bacc7630920e [file] [log] [blame]
/*
*
* Copyright (c) 2021-2022 Project CHIP Authors
*
* 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 "DefaultDeviceAttestationVerifier.h"
#include <controller/OperationalCredentialsDelegate.h>
#include <credentials/CHIPCert.h>
#include <credentials/CertificationDeclaration.h>
#include <credentials/DeviceAttestationConstructor.h>
#include <credentials/DeviceAttestationVendorReserved.h>
#include <credentials/attestation_verifier/TestPAAStore.h>
#include <crypto/CHIPCryptoPAL.h>
#include <lib/core/CHIPError.h>
#include <lib/core/Global.h>
#include <lib/support/CodeUtils.h>
#include <lib/support/ScopedBuffer.h>
#include <lib/support/Span.h>
using namespace chip::Crypto;
using chip::TestCerts::GetTestPaaRootStore;
namespace chip {
namespace Credentials {
namespace {
// As per specifications section 11.22.5.1. Constant RESP_MAX
constexpr size_t kMaxResponseLength = 900;
// Test CD Signing Key from `credentials/test/certification-declaration/Chip-Test-CD-Signing-Cert.pem`
// used to verify any in-SDK development CDs. The associated keypair to do actual signing is in
// `credentials/test/certification-declaration/Chip-Test-CD-Signing-Key.pem`.
//
// Note that this certificate is a self signed certificate and doesn't chain up to the CSA trusted root.
// This CD Signing certificate can only be used to sign CDs for testing/development purposes
// and should never be used in production devices.
//
// -----BEGIN CERTIFICATE-----
// MIIBszCCAVqgAwIBAgIIRdrzneR6oI8wCgYIKoZIzj0EAwIwKzEpMCcGA1UEAwwg
// TWF0dGVyIFRlc3QgQ0QgU2lnbmluZyBBdXRob3JpdHkwIBcNMjEwNjI4MTQyMzQz
// WhgPOTk5OTEyMzEyMzU5NTlaMCsxKTAnBgNVBAMMIE1hdHRlciBUZXN0IENEIFNp
// Z25pbmcgQXV0aG9yaXR5MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEPDmJIkUr
// VcrzicJb0bykZWlSzLkOiGkkmthHRlMBTL+V1oeWXgNrUhxRA35rjO3vyh60QEZp
// T6CIgu7WUZ3suqNmMGQwEgYDVR0TAQH/BAgwBgEB/wIBATAOBgNVHQ8BAf8EBAMC
// AQYwHQYDVR0OBBYEFGL6gjNZrPqplj4c+hQK3fUE83FgMB8GA1UdIwQYMBaAFGL6
// gjNZrPqplj4c+hQK3fUE83FgMAoGCCqGSM49BAMCA0cAMEQCICxUXOTkV9im8NnZ
// u+vW7OHd/n+MbZps83UyH8b6xxOEAiBUB3jodDlyUn7t669YaGIgtUB48s1OYqdq
// 58u5L/VMiw==
// -----END CERTIFICATE-----
//
constexpr uint8_t gTestCdPubkeyBytes[] = {
0x04, 0x3c, 0x39, 0x89, 0x22, 0x45, 0x2b, 0x55, 0xca, 0xf3, 0x89, 0xc2, 0x5b, 0xd1, 0xbc, 0xa4, 0x65,
0x69, 0x52, 0xcc, 0xb9, 0x0e, 0x88, 0x69, 0x24, 0x9a, 0xd8, 0x47, 0x46, 0x53, 0x01, 0x4c, 0xbf, 0x95,
0xd6, 0x87, 0x96, 0x5e, 0x03, 0x6b, 0x52, 0x1c, 0x51, 0x03, 0x7e, 0x6b, 0x8c, 0xed, 0xef, 0xca, 0x1e,
0xb4, 0x40, 0x46, 0x69, 0x4f, 0xa0, 0x88, 0x82, 0xee, 0xd6, 0x51, 0x9d, 0xec, 0xba,
};
constexpr uint8_t gTestCdPubkeyKid[] = {
0x62, 0xfa, 0x82, 0x33, 0x59, 0xac, 0xfa, 0xa9, 0x96, 0x3e, 0x1c, 0xfa, 0x14, 0x0a, 0xdd, 0xf5, 0x04, 0xf3, 0x71, 0x60,
};
// Official CSA "Matter Certification and Testing CA"
//
// -----BEGIN CERTIFICATE-----
// MIICATCCAaegAwIBAgIHY3Nhcm9vdDAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
// U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
// MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjA3MDcxOTI4MDRaGA8yMTIyMDYx
// MzE5MjgwNFowUjEMMAoGA1UECgwDQ1NBMSwwKgYDVQQDDCNNYXR0ZXIgQ2VydGlm
// aWNhdGlvbiBhbmQgVGVzdGluZyBDQTEUMBIGCisGAQQBgqJ8AgEMBEM1QTAwWTAT
// BgcqhkjOPQIBBggqhkjOPQMBBwNCAAQ4SjrDql2+y3IP5iEdPK1IYm/3EaCkkp+t
// 2GD44nf/wN4fPrYzejSEe1o6BW6ocQ6Td+7t7iUXA/3ZNQEly45Io2YwZDASBgNV
// HRMBAf8ECDAGAQH/AgEBMA4GA1UdDwEB/wQEAwIBBjAdBgNVHQ4EFgQUl+Rp0MUE
// FMJvxwH3fpR3OQmN9qUwHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3OQmN9qUw
// CgYIKoZIzj0EAwIDSAAwRQIgearlB0fCJ49UoJ6xwKPdlPEopCOL9jVCviODEleI
// +mQCIQDvvDCKi7kvj4R4BoFS4BVZGCk4zJ84W4tfTTfu89lRbQ==
// -----END CERTIFICATE-----
//
constexpr uint8_t gCdRootCert[] = {
0x30, 0x82, 0x02, 0x01, 0x30, 0x82, 0x01, 0xa7, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x07, 0x63, 0x73, 0x61, 0x72, 0x6f, 0x6f,
0x74, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x30, 0x52, 0x31, 0x0c, 0x30, 0x0a, 0x06, 0x03,
0x55, 0x04, 0x0a, 0x0c, 0x03, 0x43, 0x53, 0x41, 0x31, 0x2c, 0x30, 0x2a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x23, 0x4d, 0x61,
0x74, 0x74, 0x65, 0x72, 0x20, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x61, 0x6e,
0x64, 0x20, 0x54, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x67, 0x20, 0x43, 0x41, 0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01,
0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c, 0x04, 0x43, 0x35, 0x41, 0x30, 0x30, 0x20, 0x17, 0x0d, 0x32, 0x32, 0x30, 0x37,
0x30, 0x37, 0x31, 0x39, 0x32, 0x38, 0x30, 0x34, 0x5a, 0x18, 0x0f, 0x32, 0x31, 0x32, 0x32, 0x30, 0x36, 0x31, 0x33, 0x31, 0x39,
0x32, 0x38, 0x30, 0x34, 0x5a, 0x30, 0x52, 0x31, 0x0c, 0x30, 0x0a, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x03, 0x43, 0x53, 0x41,
0x31, 0x2c, 0x30, 0x2a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x23, 0x4d, 0x61, 0x74, 0x74, 0x65, 0x72, 0x20, 0x43, 0x65, 0x72,
0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x54, 0x65, 0x73, 0x74, 0x69, 0x6e,
0x67, 0x20, 0x43, 0x41, 0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01, 0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c,
0x04, 0x43, 0x35, 0x41, 0x30, 0x30, 0x59, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02, 0x01, 0x06, 0x08, 0x2a,
0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0x03, 0x42, 0x00, 0x04, 0x38, 0x4a, 0x3a, 0xc3, 0xaa, 0x5d, 0xbe, 0xcb, 0x72, 0x0f,
0xe6, 0x21, 0x1d, 0x3c, 0xad, 0x48, 0x62, 0x6f, 0xf7, 0x11, 0xa0, 0xa4, 0x92, 0x9f, 0xad, 0xd8, 0x60, 0xf8, 0xe2, 0x77, 0xff,
0xc0, 0xde, 0x1f, 0x3e, 0xb6, 0x33, 0x7a, 0x34, 0x84, 0x7b, 0x5a, 0x3a, 0x05, 0x6e, 0xa8, 0x71, 0x0e, 0x93, 0x77, 0xee, 0xed,
0xee, 0x25, 0x17, 0x03, 0xfd, 0xd9, 0x35, 0x01, 0x25, 0xcb, 0x8e, 0x48, 0xa3, 0x66, 0x30, 0x64, 0x30, 0x12, 0x06, 0x03, 0x55,
0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x08, 0x30, 0x06, 0x01, 0x01, 0xff, 0x02, 0x01, 0x01, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x1d,
0x0f, 0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x01, 0x06, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16, 0x04, 0x14,
0x97, 0xe4, 0x69, 0xd0, 0xc5, 0x04, 0x14, 0xc2, 0x6f, 0xc7, 0x01, 0xf7, 0x7e, 0x94, 0x77, 0x39, 0x09, 0x8d, 0xf6, 0xa5, 0x30,
0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16, 0x80, 0x14, 0x97, 0xe4, 0x69, 0xd0, 0xc5, 0x04, 0x14, 0xc2, 0x6f,
0xc7, 0x01, 0xf7, 0x7e, 0x94, 0x77, 0x39, 0x09, 0x8d, 0xf6, 0xa5, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04,
0x03, 0x02, 0x03, 0x48, 0x00, 0x30, 0x45, 0x02, 0x20, 0x79, 0xaa, 0xe5, 0x07, 0x47, 0xc2, 0x27, 0x8f, 0x54, 0xa0, 0x9e, 0xb1,
0xc0, 0xa3, 0xdd, 0x94, 0xf1, 0x28, 0xa4, 0x23, 0x8b, 0xf6, 0x35, 0x42, 0xbe, 0x23, 0x83, 0x12, 0x57, 0x88, 0xfa, 0x64, 0x02,
0x21, 0x00, 0xef, 0xbc, 0x30, 0x8a, 0x8b, 0xb9, 0x2f, 0x8f, 0x84, 0x78, 0x06, 0x81, 0x52, 0xe0, 0x15, 0x59, 0x18, 0x29, 0x38,
0xcc, 0x9f, 0x38, 0x5b, 0x8b, 0x5f, 0x4d, 0x37, 0xee, 0xf3, 0xd9, 0x51, 0x6d
};
// Official CD "Signing Key 001"
//
// -----BEGIN CERTIFICATE-----
// MIICBzCCAa2gAwIBAgIHY3NhY2RrMTAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
// U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
// MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTI4NTVaGA8yMDcyMDky
// MDE5Mjg1NVowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
// IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwMTEUMBIGCisGAQQBgqJ8AgEMBEM1
// QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAATN7uk+RPi3K+PRqcB+IZaLmv/z
// tAPwXhZp17Hlyu5vx3FLQufiNpXpLNdjVHOigK5ojze7lInhFim5uU/3sJkpo2Yw
// ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
// /jQ/lZlHdjth7kU5ExM4SU/mfY4wHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
// OQmN9qUwCgYIKoZIzj0EAwIDSAAwRQIgEDWOcdKsVGtUh3evHbBd1lq4aS7yQtOp
// 6GrOQ3/zXBsCIQDxorh2RXSaI8m2RCcoWaiWa0nLzQepNm3C2jrQVJmC2Q==
// -----END CERTIFICATE-----
//
constexpr uint8_t gCdSigningKey001PubkeyBytes[] = {
0x04, 0xcd, 0xee, 0xe9, 0x3e, 0x44, 0xf8, 0xb7, 0x2b, 0xe3, 0xd1, 0xa9, 0xc0, 0x7e, 0x21, 0x96, 0x8b,
0x9a, 0xff, 0xf3, 0xb4, 0x03, 0xf0, 0x5e, 0x16, 0x69, 0xd7, 0xb1, 0xe5, 0xca, 0xee, 0x6f, 0xc7, 0x71,
0x4b, 0x42, 0xe7, 0xe2, 0x36, 0x95, 0xe9, 0x2c, 0xd7, 0x63, 0x54, 0x73, 0xa2, 0x80, 0xae, 0x68, 0x8f,
0x37, 0xbb, 0x94, 0x89, 0xe1, 0x16, 0x29, 0xb9, 0xb9, 0x4f, 0xf7, 0xb0, 0x99, 0x29,
};
constexpr uint8_t gCdSigningKey001Kid[] = {
0xFE, 0x34, 0x3F, 0x95, 0x99, 0x47, 0x76, 0x3B, 0x61, 0xEE, 0x45, 0x39, 0x13, 0x13, 0x38, 0x49, 0x4F, 0xE6, 0x7D, 0x8E,
};
// Official CD "Signing Key 002"
//
// -----BEGIN CERTIFICATE-----
// MIICCDCCAa2gAwIBAgIHY3NhY2RrMjAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
// U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
// MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTM2NDZaGA8yMDcyMDky
// MDE5MzY0NlowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
// IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwMjEUMBIGCisGAQQBgqJ8AgEMBEM1
// QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAAQDGTfo+UJRBF3ydFe7RiU+43VO
// jBKuKFV9gCe51MNW2RtAjP8yJ1AXsl+Mi6IFFtXIOvK3JBKAE9/Mj5XSAKkLo2Yw
// ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
// 3QTbWFshTBxYFYfmVo30h7bdxwEwHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
// OQmN9qUwCgYIKoZIzj0EAwIDSQAwRgIhAJruzxZ806cP/LoQ07PN9xAbjLdwUalV
// h0Qfx304Tb92AiEAk+jnf2qtyfKyTEHpT3Xf3bfekqUOA+8ikB1yjL5oTsI=
// -----END CERTIFICATE-----
//
constexpr uint8_t gCdSigningKey002PubkeyBytes[] = {
0x04, 0x03, 0x19, 0x37, 0xe8, 0xf9, 0x42, 0x51, 0x04, 0x5d, 0xf2, 0x74, 0x57, 0xbb, 0x46, 0x25, 0x3e,
0xe3, 0x75, 0x4e, 0x8c, 0x12, 0xae, 0x28, 0x55, 0x7d, 0x80, 0x27, 0xb9, 0xd4, 0xc3, 0x56, 0xd9, 0x1b,
0x40, 0x8c, 0xff, 0x32, 0x27, 0x50, 0x17, 0xb2, 0x5f, 0x8c, 0x8b, 0xa2, 0x05, 0x16, 0xd5, 0xc8, 0x3a,
0xf2, 0xb7, 0x24, 0x12, 0x80, 0x13, 0xdf, 0xcc, 0x8f, 0x95, 0xd2, 0x00, 0xa9, 0x0b,
};
constexpr uint8_t gCdSigningKey002Kid[] = {
0xDD, 0x04, 0xDB, 0x58, 0x5B, 0x21, 0x4C, 0x1C, 0x58, 0x15, 0x87, 0xE6, 0x56, 0x8D, 0xF4, 0x87, 0xB6, 0xDD, 0xC7, 0x01,
};
// Official CD "Signing Key 003"
//
// -----BEGIN CERTIFICATE-----
// MIICBjCCAa2gAwIBAgIHY3NhY2RrMzAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
// U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
// MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTQxMDFaGA8yMDcyMDky
// MDE5NDEwMVowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
// IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwMzEUMBIGCisGAQQBgqJ8AgEMBEM1
// QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAASfV1zV/bdSHxCk3zHwc5ErYUco
// 8tN/W2uWvCy/fAsRlpBXfVVdIaCWYKiwgqM56lMPeoEthpO1b9dkGF+rzTL1o2Yw
// ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
// RxA158BOqqi+fE1ME+PkwgmVqEswHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
// OQmN9qUwCgYIKoZIzj0EAwIDRwAwRAIgIFecbY+1mVVNqxH9+8IMB8+safdyIJU2
// AqqtZ/w7AkQCIHiVlYTaCnJsnW5/cvj9GfIv7Eb0cjdmcAkrYGbnPQzX
// -----END CERTIFICATE-----
//
constexpr uint8_t gCdSigningKey003PubkeyBytes[] = {
0x04, 0x9f, 0x57, 0x5c, 0xd5, 0xfd, 0xb7, 0x52, 0x1f, 0x10, 0xa4, 0xdf, 0x31, 0xf0, 0x73, 0x91, 0x2b,
0x61, 0x47, 0x28, 0xf2, 0xd3, 0x7f, 0x5b, 0x6b, 0x96, 0xbc, 0x2c, 0xbf, 0x7c, 0x0b, 0x11, 0x96, 0x90,
0x57, 0x7d, 0x55, 0x5d, 0x21, 0xa0, 0x96, 0x60, 0xa8, 0xb0, 0x82, 0xa3, 0x39, 0xea, 0x53, 0x0f, 0x7a,
0x81, 0x2d, 0x86, 0x93, 0xb5, 0x6f, 0xd7, 0x64, 0x18, 0x5f, 0xab, 0xcd, 0x32, 0xf5,
};
constexpr uint8_t gCdSigningKey003Kid[] = {
0x47, 0x10, 0x35, 0xE7, 0xC0, 0x4E, 0xAA, 0xA8, 0xBE, 0x7C, 0x4D, 0x4C, 0x13, 0xE3, 0xE4, 0xC2, 0x09, 0x95, 0xA8, 0x4B,
};
// Official CD "Signing Key 004"
//
// -----BEGIN CERTIFICATE-----
// MIICBjCCAa2gAwIBAgIHY3NhY2RrNDAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
// U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
// MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTQzMjFaGA8yMDcyMDky
// MDE5NDMyMVowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
// IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwNDEUMBIGCisGAQQBgqJ8AgEMBEM1
// QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAAR8/I2IEKic9PoZF3jyr+x4+FF6
// l6Plf8ITutiI42EedP+2hL3rqKaLJSNKXDWPNzurm20wThMG3XYgpSjRFhwLo2Yw
// ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
// 9oYDo2kumBByQZ6h4as4VL13ldMwHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
// OQmN9qUwCgYIKoZIzj0EAwIDRwAwRAIgLqAfkbtLYYdmQsnbn0CWv3G1/lbE36nz
// HbLbW5t6PY4CIE8oyIHsVhNSTPcb3mwRp+Vxhs8tKhbAdwv5BGgDaAHj
// -----END CERTIFICATE-----
//
constexpr uint8_t gCdSigningKey004PubkeyBytes[] = {
0x04, 0x7c, 0xfc, 0x8d, 0x88, 0x10, 0xa8, 0x9c, 0xf4, 0xfa, 0x19, 0x17, 0x78, 0xf2, 0xaf, 0xec, 0x78,
0xf8, 0x51, 0x7a, 0x97, 0xa3, 0xe5, 0x7f, 0xc2, 0x13, 0xba, 0xd8, 0x88, 0xe3, 0x61, 0x1e, 0x74, 0xff,
0xb6, 0x84, 0xbd, 0xeb, 0xa8, 0xa6, 0x8b, 0x25, 0x23, 0x4a, 0x5c, 0x35, 0x8f, 0x37, 0x3b, 0xab, 0x9b,
0x6d, 0x30, 0x4e, 0x13, 0x06, 0xdd, 0x76, 0x20, 0xa5, 0x28, 0xd1, 0x16, 0x1c, 0x0b,
};
constexpr uint8_t gCdSigningKey004Kid[] = {
0xF6, 0x86, 0x03, 0xA3, 0x69, 0x2E, 0x98, 0x10, 0x72, 0x41, 0x9E, 0xA1, 0xE1, 0xAB, 0x38, 0x54, 0xBD, 0x77, 0x95, 0xD3,
};
// Official CD "Signing Key 005"
//
// -----BEGIN CERTIFICATE-----
// MIICBzCCAa2gAwIBAgIHY3NhY2RrNTAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
// U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
// MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjEwMDMxOTQ3MTVaGA8yMDcyMDky
// MDE5NDcxNVowWDEMMAoGA1UECgwDQ1NBMTIwMAYDVQQDDClDZXJ0aWZpY2F0aW9u
// IERlY2xhcmF0aW9uIFNpZ25pbmcgS2V5IDAwNTEUMBIGCisGAQQBgqJ8AgEMBEM1
// QTAwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAARDilLGYqKm1yZH+V63UxNu5K4P
// 2zqpwWkxQms9CGf5EDrn16G4h+n4E6byb3a7zak1k3h8EneMqPKXXcRaIEL5o2Yw
// ZDASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQU
// Y38mNK1i6v5q9mLvuW9v0vy//C8wHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3
// OQmN9qUwCgYIKoZIzj0EAwIDSAAwRQIhAM1HQpvkHKxLJByWaSYAPRZgh3Bis18W
// AViq7c/mtzEAAiBZO0lVe6Qo9iQPIBWZaVx/S/YSNO9uKNa/pvFu3V+nIg==
// -----END CERTIFICATE-----
//
constexpr uint8_t gCdSigningKey005PubkeyBytes[] = {
0x04, 0x43, 0x8a, 0x52, 0xc6, 0x62, 0xa2, 0xa6, 0xd7, 0x26, 0x47, 0xf9, 0x5e, 0xb7, 0x53, 0x13, 0x6e,
0xe4, 0xae, 0x0f, 0xdb, 0x3a, 0xa9, 0xc1, 0x69, 0x31, 0x42, 0x6b, 0x3d, 0x08, 0x67, 0xf9, 0x10, 0x3a,
0xe7, 0xd7, 0xa1, 0xb8, 0x87, 0xe9, 0xf8, 0x13, 0xa6, 0xf2, 0x6f, 0x76, 0xbb, 0xcd, 0xa9, 0x35, 0x93,
0x78, 0x7c, 0x12, 0x77, 0x8c, 0xa8, 0xf2, 0x97, 0x5d, 0xc4, 0x5a, 0x20, 0x42, 0xf9,
};
constexpr uint8_t gCdSigningKey005Kid[] = {
0x63, 0x7F, 0x26, 0x34, 0xAD, 0x62, 0xEA, 0xFE, 0x6A, 0xF6, 0x62, 0xEF, 0xB9, 0x6F, 0x6F, 0xD2, 0xFC, 0xBF, 0xFC, 0x2F,
};
struct MatterCDSigningKey
{
const CertificateKeyId mKid;
const P256PublicKeySpan mPubkey;
};
constexpr std::array<MatterCDSigningKey, 6> gCdSigningKeys = { {
{ FixedByteSpan<20>{ gTestCdPubkeyKid }, FixedByteSpan<65>{ gTestCdPubkeyBytes } },
{ FixedByteSpan<20>{ gCdSigningKey001Kid }, FixedByteSpan<65>{ gCdSigningKey001PubkeyBytes } },
{ FixedByteSpan<20>{ gCdSigningKey002Kid }, FixedByteSpan<65>{ gCdSigningKey002PubkeyBytes } },
{ FixedByteSpan<20>{ gCdSigningKey003Kid }, FixedByteSpan<65>{ gCdSigningKey003PubkeyBytes } },
{ FixedByteSpan<20>{ gCdSigningKey004Kid }, FixedByteSpan<65>{ gCdSigningKey004PubkeyBytes } },
{ FixedByteSpan<20>{ gCdSigningKey005Kid }, FixedByteSpan<65>{ gCdSigningKey005PubkeyBytes } },
} };
struct TestAttestationTrustStore final : public ArrayAttestationTrustStore
{
TestAttestationTrustStore() : ArrayAttestationTrustStore(GetTestPaaRootStore().data(), GetTestPaaRootStore().size()) {}
};
Global<TestAttestationTrustStore> gTestAttestationTrustStore;
AttestationVerificationResult MapError(CertificateChainValidationResult certificateChainValidationResult)
{
switch (certificateChainValidationResult)
{
case CertificateChainValidationResult::kRootFormatInvalid:
return AttestationVerificationResult::kPaaFormatInvalid;
case CertificateChainValidationResult::kRootArgumentInvalid:
return AttestationVerificationResult::kPaaArgumentInvalid;
case CertificateChainValidationResult::kICAFormatInvalid:
return AttestationVerificationResult::kPaiFormatInvalid;
case CertificateChainValidationResult::kICAArgumentInvalid:
return AttestationVerificationResult::kPaiArgumentInvalid;
case CertificateChainValidationResult::kLeafFormatInvalid:
return AttestationVerificationResult::kDacFormatInvalid;
case CertificateChainValidationResult::kLeafArgumentInvalid:
return AttestationVerificationResult::kDacArgumentInvalid;
case CertificateChainValidationResult::kChainInvalid:
return AttestationVerificationResult::kDacSignatureInvalid;
case CertificateChainValidationResult::kNoMemory:
return AttestationVerificationResult::kNoMemory;
case CertificateChainValidationResult::kInternalFrameworkError:
return AttestationVerificationResult::kInternalError;
default:
return AttestationVerificationResult::kInternalError;
}
}
} // namespace
void DefaultDACVerifier::VerifyAttestationInformation(const DeviceAttestationVerifier::AttestationInfo & info,
Callback::Callback<OnAttestationInformationVerification> * onCompletion)
{
AttestationVerificationResult attestationError = AttestationVerificationResult::kSuccess;
Platform::ScopedMemoryBuffer<uint8_t> paaCert;
MutableByteSpan paaDerBuffer;
AttestationCertVidPid dacVidPid;
AttestationCertVidPid paiVidPid;
AttestationCertVidPid paaVidPid;
VerifyOrExit(!info.attestationElementsBuffer.empty() && !info.attestationChallengeBuffer.empty() &&
!info.attestationSignatureBuffer.empty() && !info.dacDerBuffer.empty() &&
!info.attestationNonceBuffer.empty() && onCompletion != nullptr,
attestationError = AttestationVerificationResult::kInvalidArgument);
VerifyOrExit(info.attestationElementsBuffer.size() <= kMaxResponseLength,
attestationError = AttestationVerificationResult::kInvalidArgument);
// Ensure PAI is present
VerifyOrExit(!info.paiDerBuffer.empty(), attestationError = AttestationVerificationResult::kPaiMissing);
// Validate Proper Certificate Format
{
VerifyOrExit(VerifyAttestationCertificateFormat(info.paiDerBuffer, AttestationCertType::kPAI) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kPaiFormatInvalid);
VerifyOrExit(VerifyAttestationCertificateFormat(info.dacDerBuffer, AttestationCertType::kDAC) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kDacFormatInvalid);
}
// match DAC and PAI VIDs
{
VerifyOrExit(ExtractVIDPIDFromX509Cert(info.dacDerBuffer, dacVidPid) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kDacFormatInvalid);
VerifyOrExit(ExtractVIDPIDFromX509Cert(info.paiDerBuffer, paiVidPid) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kPaiFormatInvalid);
VerifyOrExit(paiVidPid.mVendorId.HasValue() && paiVidPid.mVendorId == dacVidPid.mVendorId,
attestationError = AttestationVerificationResult::kDacVendorIdMismatch);
VerifyOrExit(dacVidPid.mProductId.HasValue(), attestationError = AttestationVerificationResult::kDacProductIdMismatch);
if (paiVidPid.mProductId.HasValue())
{
VerifyOrExit(paiVidPid.mProductId == dacVidPid.mProductId,
attestationError = AttestationVerificationResult::kDacProductIdMismatch);
}
}
{
P256PublicKey remoteManufacturerPubkey;
P256ECDSASignature deviceSignature;
VerifyOrExit(ExtractPubkeyFromX509Cert(info.dacDerBuffer, remoteManufacturerPubkey) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kDacFormatInvalid);
// Validate overall attestation signature on attestation information
// SetLength will fail if signature doesn't fit
VerifyOrExit(deviceSignature.SetLength(info.attestationSignatureBuffer.size()) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kAttestationSignatureInvalidFormat);
memcpy(deviceSignature.Bytes(), info.attestationSignatureBuffer.data(), info.attestationSignatureBuffer.size());
VerifyOrExit(ValidateAttestationSignature(remoteManufacturerPubkey, info.attestationElementsBuffer,
info.attestationChallengeBuffer, deviceSignature) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kAttestationSignatureInvalid);
}
{
uint8_t akidBuf[Crypto::kAuthorityKeyIdentifierLength];
MutableByteSpan akid(akidBuf);
constexpr size_t paaCertAllocatedLen = kMaxDERCertLength;
CHIP_ERROR err = CHIP_NO_ERROR;
VerifyOrExit(ExtractAKIDFromX509Cert(info.paiDerBuffer, akid) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kPaiFormatInvalid);
VerifyOrExit(paaCert.Alloc(paaCertAllocatedLen), attestationError = AttestationVerificationResult::kNoMemory);
paaDerBuffer = MutableByteSpan(paaCert.Get(), paaCertAllocatedLen);
err = mAttestationTrustStore->GetProductAttestationAuthorityCert(akid, paaDerBuffer);
VerifyOrExit(err == CHIP_NO_ERROR || err == CHIP_ERROR_NOT_IMPLEMENTED,
attestationError = AttestationVerificationResult::kPaaNotFound);
if (err == CHIP_ERROR_NOT_IMPLEMENTED)
{
VerifyOrExit(gTestAttestationTrustStore->GetProductAttestationAuthorityCert(akid, paaDerBuffer) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kPaaNotFound);
}
VerifyOrExit(ExtractVIDPIDFromX509Cert(paaDerBuffer, paaVidPid) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kPaaFormatInvalid);
if (paaVidPid.mVendorId.HasValue())
{
VerifyOrExit(paaVidPid.mVendorId == paiVidPid.mVendorId,
attestationError = AttestationVerificationResult::kPaiVendorIdMismatch);
}
VerifyOrExit(!paaVidPid.mProductId.HasValue(), attestationError = AttestationVerificationResult::kPaaFormatInvalid);
}
#if !defined(CURRENT_TIME_NOT_IMPLEMENTED)
VerifyOrExit(IsCertificateValidAtCurrentTime(info.dacDerBuffer) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kDacExpired);
#endif
CertificateChainValidationResult chainValidationResult;
VerifyOrExit(ValidateCertificateChain(paaDerBuffer.data(), paaDerBuffer.size(), info.paiDerBuffer.data(),
info.paiDerBuffer.size(), info.dacDerBuffer.data(), info.dacDerBuffer.size(),
chainValidationResult) == CHIP_NO_ERROR,
attestationError = MapError(chainValidationResult));
{
ByteSpan certificationDeclarationSpan;
ByteSpan attestationNonceSpan;
uint32_t timestampDeconstructed;
ByteSpan firmwareInfoSpan;
DeviceAttestationVendorReservedDeconstructor vendorReserved;
ByteSpan certificationDeclarationPayload;
DeviceInfoForAttestation deviceInfo{
.vendorId = info.vendorId,
.productId = info.productId,
.dacVendorId = dacVidPid.mVendorId.Value(),
.dacProductId = dacVidPid.mProductId.Value(),
.paiVendorId = paiVidPid.mVendorId.Value(),
.paiProductId = paiVidPid.mProductId.ValueOr(0),
.paaVendorId = paaVidPid.mVendorId.ValueOr(VendorId::NotSpecified),
};
MutableByteSpan paaSKID(deviceInfo.paaSKID);
VerifyOrExit(ExtractSKIDFromX509Cert(paaDerBuffer, paaSKID) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kPaaFormatInvalid);
VerifyOrExit(paaSKID.size() == sizeof(deviceInfo.paaSKID),
attestationError = AttestationVerificationResult::kPaaFormatInvalid);
VerifyOrExit(DeconstructAttestationElements(info.attestationElementsBuffer, certificationDeclarationSpan,
attestationNonceSpan, timestampDeconstructed, firmwareInfoSpan,
vendorReserved) == CHIP_NO_ERROR,
attestationError = AttestationVerificationResult::kAttestationElementsMalformed);
// Verify that Nonce matches with what we sent
VerifyOrExit(attestationNonceSpan.data_equal(info.attestationNonceBuffer),
attestationError = AttestationVerificationResult::kAttestationNonceMismatch);
attestationError = ValidateCertificationDeclarationSignature(certificationDeclarationSpan, certificationDeclarationPayload);
VerifyOrExit(attestationError == AttestationVerificationResult::kSuccess, attestationError = attestationError);
attestationError = ValidateCertificateDeclarationPayload(certificationDeclarationPayload, firmwareInfoSpan, deviceInfo);
VerifyOrExit(attestationError == AttestationVerificationResult::kSuccess, attestationError = attestationError);
}
exit:
onCompletion->mCall(onCompletion->mContext, info, attestationError);
}
AttestationVerificationResult DefaultDACVerifier::ValidateCertificationDeclarationSignature(const ByteSpan & cmsEnvelopeBuffer,
ByteSpan & certDeclBuffer)
{
ByteSpan kid;
VerifyOrReturnError(CMS_ExtractKeyId(cmsEnvelopeBuffer, kid) == CHIP_NO_ERROR,
AttestationVerificationResult::kCertificationDeclarationNoKeyId);
Crypto::P256PublicKey verifyingKey;
CHIP_ERROR err = mCdKeysTrustStore.LookupVerifyingKey(kid, verifyingKey);
VerifyOrReturnError(err == CHIP_NO_ERROR, AttestationVerificationResult::kCertificationDeclarationNoCertificateFound);
// Disallow test key if support not enabled
if (mCdKeysTrustStore.IsCdTestKey(kid) && !IsCdTestKeySupported())
{
return AttestationVerificationResult::kCertificationDeclarationNoCertificateFound;
}
VerifyOrReturnError(CMS_Verify(cmsEnvelopeBuffer, verifyingKey, certDeclBuffer) == CHIP_NO_ERROR,
AttestationVerificationResult::kCertificationDeclarationInvalidSignature);
return AttestationVerificationResult::kSuccess;
}
AttestationVerificationResult DefaultDACVerifier::ValidateCertificateDeclarationPayload(const ByteSpan & certDeclBuffer,
const ByteSpan & firmwareInfo,
const DeviceInfoForAttestation & deviceInfo)
{
CertificationElementsWithoutPIDs cdContent;
CertificationElementsDecoder cdElementsDecoder;
VerifyOrReturnError(DecodeCertificationElements(certDeclBuffer, cdContent) == CHIP_NO_ERROR,
AttestationVerificationResult::kCertificationDeclarationInvalidFormat);
if (!firmwareInfo.empty())
{
// TODO: validate contents based on DCL
}
// Verify the cd elements are as required by the spec
// security_level, security_information are meant to be ignored. version_number is not meant to be interpreted by the
// commissioners.
if (cdContent.formatVersion != 1 || cdContent.certificationType >= chip::to_underlying(CertificationType::kReserved))
{
return AttestationVerificationResult::kAttestationElementsMalformed;
}
// The vendor_id field in the Certification Declaration SHALL match the VendorID attribute found in the Basic Information
// cluster
VerifyOrReturnError(cdContent.vendorId == deviceInfo.vendorId,
AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
// The product_id_array field in the Certification Declaration SHALL contain the value of the ProductID attribute found in
// the Basic Information cluster.
VerifyOrReturnError(cdElementsDecoder.IsProductIdIn(certDeclBuffer, deviceInfo.productId),
AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
if (cdContent.dacOriginVIDandPIDPresent)
{
// The Vendor ID (VID) subject DN in the DAC SHALL match the dac_origin_vendor_id field in the Certification
// Declaration.
VerifyOrReturnError(deviceInfo.dacVendorId == cdContent.dacOriginVendorId,
AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
// The Vendor ID (VID) subject DN in the PAI SHALL match the dac_origin_vendor_id field in the Certification
// Declaration.
VerifyOrReturnError(deviceInfo.paiVendorId == cdContent.dacOriginVendorId,
AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
// The Product ID (PID) subject DN in the DAC SHALL match the dac_origin_product_id field in the Certification
// Declaration.
VerifyOrReturnError(deviceInfo.dacProductId == cdContent.dacOriginProductId,
AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
// The Product ID (PID) subject DN in the PAI, if such a Product ID is present, SHALL match the dac_origin_product_id
// field in the Certification Declaration.
if (deviceInfo.paiProductId != 0) // if PAI PID is present
{
VerifyOrReturnError(deviceInfo.paiProductId == cdContent.dacOriginProductId,
AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
}
}
else
{
// The Vendor ID (VID) subject DN in the DAC SHALL match the vendor_id field in the Certification Declaration
VerifyOrReturnError(deviceInfo.dacVendorId == cdContent.vendorId,
AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
// The Vendor ID (VID) subject DN in the PAI SHALL match the vendor_id field in the Certification Declaration.
VerifyOrReturnError(deviceInfo.paiVendorId == cdContent.vendorId,
AttestationVerificationResult::kCertificationDeclarationInvalidVendorId);
// The Product ID (PID) subject DN in the DAC SHALL be present in the product_id_array field in the Certification
// Declaration.
VerifyOrReturnError(cdElementsDecoder.IsProductIdIn(certDeclBuffer, deviceInfo.dacProductId),
AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
// The Product ID (PID) subject DN in the PAI, if such a Product ID is present, SHALL match one of the values present in
// the product_id_array field in the Certification Declaration.
if (deviceInfo.paiProductId != 0) // if PAI PID is present
{
VerifyOrReturnError(cdElementsDecoder.IsProductIdIn(certDeclBuffer, deviceInfo.paiProductId),
AttestationVerificationResult::kCertificationDeclarationInvalidProductId);
}
}
if (cdContent.authorizedPAAListPresent)
{
// The Subject Key Id of the PAA SHALL match one of the values present in the authorized_paa_list
// in the Certification Declaration.
VerifyOrReturnError(cdElementsDecoder.HasAuthorizedPAA(certDeclBuffer, ByteSpan(deviceInfo.paaSKID)),
AttestationVerificationResult::kCertificationDeclarationInvalidPAA);
}
return AttestationVerificationResult::kSuccess;
}
CHIP_ERROR DefaultDACVerifier::VerifyNodeOperationalCSRInformation(const ByteSpan & nocsrElementsBuffer,
const ByteSpan & attestationChallengeBuffer,
const ByteSpan & attestationSignatureBuffer,
const P256PublicKey & dacPublicKey, const ByteSpan & csrNonce)
{
VerifyOrReturnError(!nocsrElementsBuffer.empty() && !attestationChallengeBuffer.empty() &&
!attestationSignatureBuffer.empty() && !csrNonce.empty(),
CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(nocsrElementsBuffer.size() <= kMaxResponseLength, CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(csrNonce.size() == Controller::kCSRNonceLength, CHIP_ERROR_INVALID_ARGUMENT);
ByteSpan csrSpan;
ByteSpan csrNonceSpan;
ByteSpan vendorReserved1Span;
ByteSpan vendorReserved2Span;
ByteSpan vendorReserved3Span;
ReturnErrorOnFailure(DeconstructNOCSRElements(nocsrElementsBuffer, csrSpan, csrNonceSpan, vendorReserved1Span,
vendorReserved2Span, vendorReserved3Span));
VerifyOrReturnError(csrNonceSpan.size() == Controller::kCSRNonceLength, CHIP_ERROR_INVALID_ARGUMENT);
// Verify that Nonce matches with what we sent
VerifyOrReturnError(csrNonceSpan.data_equal(csrNonce), CHIP_ERROR_INVALID_ARGUMENT);
// Validate overall attestation signature on attestation information
P256ECDSASignature signature;
// SetLength will fail if signature doesn't fit
ReturnErrorOnFailure(signature.SetLength(attestationSignatureBuffer.size()));
memcpy(signature.Bytes(), attestationSignatureBuffer.data(), attestationSignatureBuffer.size());
ReturnErrorOnFailure(ValidateAttestationSignature(dacPublicKey, nocsrElementsBuffer, attestationChallengeBuffer, signature));
return CHIP_NO_ERROR;
}
void DefaultDACVerifier::CheckForRevokedDACChain(const AttestationInfo & info,
Callback::Callback<OnAttestationInformationVerification> * onCompletion)
{
AttestationVerificationResult attestationError = AttestationVerificationResult::kSuccess;
// TODO(#33124): Implement default version of CheckForRevokedDACChain
onCompletion->mCall(onCompletion->mContext, info, attestationError);
}
bool CsaCdKeysTrustStore::IsCdTestKey(const ByteSpan & kid) const
{
return kid.data_equal(ByteSpan{ gTestCdPubkeyKid });
}
CHIP_ERROR CsaCdKeysTrustStore::AddTrustedKey(const ByteSpan & kid, const Crypto::P256PublicKey & pubKey)
{
ReturnErrorCodeIf(kid.size() > SingleKeyEntry::kMaxKidSize, CHIP_ERROR_INVALID_ARGUMENT);
ReturnErrorCodeIf(kid.empty(), CHIP_ERROR_INVALID_ARGUMENT);
ReturnErrorCodeIf(mNumTrustedKeys == kMaxNumTrustedKeys, CHIP_ERROR_NO_MEMORY);
auto & entry = mTrustedKeys[mNumTrustedKeys];
entry.kidSize = kid.size();
memcpy(&entry.kidBuffer[0], kid.data(), kid.size());
entry.publicKey = pubKey;
++mNumTrustedKeys;
return CHIP_NO_ERROR;
}
CHIP_ERROR CsaCdKeysTrustStore::AddTrustedKey(const ByteSpan & derCertBytes)
{
uint8_t kidBuf[Crypto::kSubjectKeyIdentifierLength] = { 0 };
MutableByteSpan kidSpan{ kidBuf };
P256PublicKey pubKey;
VerifyOrReturnError(CHIP_NO_ERROR == Crypto::ExtractSKIDFromX509Cert(derCertBytes, kidSpan), CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(CHIP_NO_ERROR == Crypto::ExtractPubkeyFromX509Cert(derCertBytes, pubKey), CHIP_ERROR_INVALID_ARGUMENT);
if (!IsCdTestKey(kidSpan))
{
// Verify cert against CSA CD root of trust.
CertificateChainValidationResult chainValidationResult;
VerifyOrReturnError(CHIP_NO_ERROR ==
ValidateCertificateChain(gCdRootCert, sizeof(gCdRootCert), nullptr, 0, derCertBytes.data(),
derCertBytes.size(), chainValidationResult),
CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(chainValidationResult == CertificateChainValidationResult::kSuccess, CHIP_ERROR_INVALID_ARGUMENT);
}
return AddTrustedKey(kidSpan, pubKey);
}
CHIP_ERROR CsaCdKeysTrustStore::LookupVerifyingKey(const ByteSpan & kid, Crypto::P256PublicKey & outPubKey) const
{
// First, search for the well known keys
for (auto & cdSigningKey : gCdSigningKeys)
{
if (kid.data_equal(cdSigningKey.mKid))
{
outPubKey = cdSigningKey.mPubkey;
return CHIP_NO_ERROR;
}
}
// Seconds, search externally added keys
for (size_t keyIdx = 0; keyIdx < mNumTrustedKeys; keyIdx++)
{
auto & entry = mTrustedKeys[keyIdx];
if (kid.data_equal(entry.GetKid()))
{
outPubKey = entry.publicKey;
return CHIP_NO_ERROR;
}
}
// If we get here, the desired key was not found
return CHIP_ERROR_KEY_NOT_FOUND;
}
const AttestationTrustStore * GetTestAttestationTrustStore()
{
return &gTestAttestationTrustStore.get();
}
DeviceAttestationVerifier * GetDefaultDACVerifier(const AttestationTrustStore * paaRootStore)
{
static DefaultDACVerifier defaultDACVerifier{ paaRootStore };
return &defaultDACVerifier;
}
} // namespace Credentials
} // namespace chip