/*
 *
 *    Copyright (c) 2021-2022 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.
 */

/**
 *    @file
 *      This file implements a unit test suite for CHIP Certification
 *      declaration classes and APIs.
 */

#include <inttypes.h>
#include <stddef.h>

#include <credentials/CHIPCert.h>
#include <credentials/CertificationDeclaration.h>
#include <credentials/attestation_verifier/DefaultDeviceAttestationVerifier.h>
#include <crypto/CHIPCryptoPAL.h>
#include <lib/support/Span.h>

#include <gtest/gtest.h>

using namespace chip;
using namespace chip::ASN1;
using namespace chip::Crypto;
using namespace chip::Credentials;

static constexpr uint8_t sTestCMS_SignerCert[] = {
    0x30, 0x82, 0x01, 0xb3, 0x30, 0x82, 0x01, 0x5a, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x08, 0x45, 0xda, 0xf3, 0x9d, 0xe4, 0x7a,
    0xa0, 0x8f, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x30, 0x2b, 0x31, 0x29, 0x30, 0x27, 0x06,
    0x03, 0x55, 0x04, 0x03, 0x0c, 0x20, 0x4d, 0x61, 0x74, 0x74, 0x65, 0x72, 0x20, 0x54, 0x65, 0x73, 0x74, 0x20, 0x43, 0x44, 0x20,
    0x53, 0x69, 0x67, 0x6e, 0x69, 0x6e, 0x67, 0x20, 0x41, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x74, 0x79, 0x30, 0x20, 0x17, 0x0d,
    0x32, 0x31, 0x30, 0x36, 0x32, 0x38, 0x31, 0x34, 0x32, 0x33, 0x34, 0x33, 0x5a, 0x18, 0x0f, 0x39, 0x39, 0x39, 0x39, 0x31, 0x32,
    0x33, 0x31, 0x32, 0x33, 0x35, 0x39, 0x35, 0x39, 0x5a, 0x30, 0x2b, 0x31, 0x29, 0x30, 0x27, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c,
    0x20, 0x4d, 0x61, 0x74, 0x74, 0x65, 0x72, 0x20, 0x54, 0x65, 0x73, 0x74, 0x20, 0x43, 0x44, 0x20, 0x53, 0x69, 0x67, 0x6e, 0x69,
    0x6e, 0x67, 0x20, 0x41, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x74, 0x79, 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, 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, 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, 0x62, 0xfa, 0x82, 0x33, 0x59, 0xac, 0xfa, 0xa9, 0x96, 0x3e, 0x1c, 0xfa, 0x14, 0x0a,
    0xdd, 0xf5, 0x04, 0xf3, 0x71, 0x60, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16, 0x80, 0x14, 0x62, 0xfa,
    0x82, 0x33, 0x59, 0xac, 0xfa, 0xa9, 0x96, 0x3e, 0x1c, 0xfa, 0x14, 0x0a, 0xdd, 0xf5, 0x04, 0xf3, 0x71, 0x60, 0x30, 0x0a, 0x06,
    0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x03, 0x47, 0x00, 0x30, 0x44, 0x02, 0x20, 0x2c, 0x54, 0x5c, 0xe4, 0xe4,
    0x57, 0xd8, 0xa6, 0xf0, 0xd9, 0xd9, 0xbb, 0xeb, 0xd6, 0xec, 0xe1, 0xdd, 0xfe, 0x7f, 0x8c, 0x6d, 0x9a, 0x6c, 0xf3, 0x75, 0x32,
    0x1f, 0xc6, 0xfa, 0xc7, 0x13, 0x84, 0x02, 0x20, 0x54, 0x07, 0x78, 0xe8, 0x74, 0x39, 0x72, 0x52, 0x7e, 0xed, 0xeb, 0xaf, 0x58,
    0x68, 0x62, 0x20, 0xb5, 0x40, 0x78, 0xf2, 0xcd, 0x4e, 0x62, 0xa7, 0x6a, 0xe7, 0xcb, 0xb9, 0x2f, 0xf5, 0x4c, 0x8b,
};

static constexpr uint8_t sTestCMS_SignerPublicKey[] = { 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 };

static constexpr uint8_t sTestCMS_SignerSerializedKeypair[] = {
    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, 0xae, 0xf3, 0x48, 0x41, 0x16, 0xe9, 0x48, 0x1e, 0xc5, 0x7b, 0xe0, 0x47, 0x2d, 0xf4, 0x1b,
    0xf4, 0x99, 0x06, 0x4e, 0x50, 0x24, 0xad, 0x86, 0x9e, 0xca, 0x5e, 0x88, 0x98, 0x02, 0xd4, 0x80, 0x75
};

// First set of test vectors for the following set of CD parameters:
// -> format_version = 1
// -> vendor_id = 0xFFF1
// -> product_id_array = [ 0x8000 ]
// -> device_type_id = 0x1234
// -> certificate_id = "ZIG20141ZB330001-24"
// -> security_level = 0
// -> security_information = 0
// -> version_number = 0x2694
// -> certification_type = 0
// -> dac_origin_vendor_id is not present
// -> dac_origin_product_id is not present
static constexpr CertificationElements sTestCMS_CertElements01 = { 1,    0xFFF1, { 0x8000 }, 1, 0x1234, "ZIG20141ZB330001-24",
                                                                   0,    0,      0x2694,     0, 0,      0,
                                                                   false };

static constexpr uint8_t sTestCMS_CDContent01[] = { 0x15, 0x24, 0x00, 0x01, 0x25, 0x01, 0xf1, 0xff, 0x36, 0x02, 0x05,
                                                    0x00, 0x80, 0x18, 0x25, 0x03, 0x34, 0x12, 0x2c, 0x04, 0x13, 0x5a,
                                                    0x49, 0x47, 0x32, 0x30, 0x31, 0x34, 0x31, 0x5a, 0x42, 0x33, 0x33,
                                                    0x30, 0x30, 0x30, 0x31, 0x2d, 0x32, 0x34, 0x24, 0x05, 0x00, 0x24,
                                                    0x06, 0x00, 0x25, 0x07, 0x94, 0x26, 0x24, 0x08, 0x00, 0x18 };

static constexpr uint8_t sTestCMS_SignedMessage01[] = {
    0x30, 0x81, 0xe8, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x02, 0xa0, 0x81, 0xda, 0x30, 0x81, 0xd7,
    0x02, 0x01, 0x03, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x30, 0x45,
    0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x01, 0xa0, 0x38, 0x04, 0x36, 0x15, 0x24, 0x00, 0x01, 0x25,
    0x01, 0xf1, 0xff, 0x36, 0x02, 0x05, 0x00, 0x80, 0x18, 0x25, 0x03, 0x34, 0x12, 0x2c, 0x04, 0x13, 0x5a, 0x49, 0x47, 0x32,
    0x30, 0x31, 0x34, 0x31, 0x5a, 0x42, 0x33, 0x33, 0x30, 0x30, 0x30, 0x31, 0x2d, 0x32, 0x34, 0x24, 0x05, 0x00, 0x24, 0x06,
    0x00, 0x25, 0x07, 0x94, 0x26, 0x24, 0x08, 0x00, 0x18, 0x31, 0x7c, 0x30, 0x7a, 0x02, 0x01, 0x03, 0x80, 0x14, 0x62, 0xfa,
    0x82, 0x33, 0x59, 0xac, 0xfa, 0xa9, 0x96, 0x3e, 0x1c, 0xfa, 0x14, 0x0a, 0xdd, 0xf5, 0x04, 0xf3, 0x71, 0x60, 0x30, 0x0b,
    0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d,
    0x04, 0x03, 0x02, 0x04, 0x46, 0x30, 0x44, 0x02, 0x20, 0x43, 0xa6, 0x3f, 0x2b, 0x94, 0x3d, 0xf3, 0x3c, 0x38, 0xb3, 0xe0,
    0x2f, 0xca, 0xa7, 0x5f, 0xe3, 0x53, 0x2a, 0xeb, 0xbf, 0x5e, 0x63, 0xf5, 0xbb, 0xdb, 0xc0, 0xb1, 0xf0, 0x1d, 0x3c, 0x4f,
    0x60, 0x02, 0x20, 0x4c, 0x1a, 0xbf, 0x5f, 0x18, 0x07, 0xb8, 0x18, 0x94, 0xb1, 0x57, 0x6c, 0x47, 0xe4, 0x72, 0x4e, 0x4d,
    0x96, 0x6c, 0x61, 0x2e, 0xd3, 0xfa, 0x25, 0xc1, 0x18, 0xc3, 0xf2, 0xb3, 0xf9, 0x03, 0x69
};

// First set of test vectors for the following set of CD parameters:
// -> format_version = 1
// -> vendor_id = 0xFFF2
// -> product_id_array = [ 0x8001, 0x8002 ]
// -> device_type_id = 0x1234
// -> certificate_id = "ZIG20142ZB330002-24"
// -> security_level = 0
// -> security_information = 0
// -> version_number = 0x2694
// -> certification_type = 0
// -> dac_origin_vendor_id = 0xFFF1
// -> dac_origin_product_id = 0x8000
static constexpr CertificationElements sTestCMS_CertElements02 = {
    1, 0xFFF2, { 0x8001, 0x8002 }, 2, 0x1234, "ZIG20142ZB330002-24", 0, 0, 0x2694, 0, 0xFFF1, 0x8000, true
};

static constexpr uint8_t sTestCMS_CDContent02[] = { 0x15, 0x24, 0x00, 0x01, 0x25, 0x01, 0xf2, 0xff, 0x36, 0x02, 0x05, 0x01, 0x80,
                                                    0x05, 0x02, 0x80, 0x18, 0x25, 0x03, 0x34, 0x12, 0x2c, 0x04, 0x13, 0x5a, 0x49,
                                                    0x47, 0x32, 0x30, 0x31, 0x34, 0x32, 0x5a, 0x42, 0x33, 0x33, 0x30, 0x30, 0x30,
                                                    0x32, 0x2d, 0x32, 0x34, 0x24, 0x05, 0x00, 0x24, 0x06, 0x00, 0x25, 0x07, 0x94,
                                                    0x26, 0x24, 0x08, 0x00, 0x25, 0x09, 0xf1, 0xff, 0x25, 0x0a, 0x00, 0x80, 0x18 };

static constexpr uint8_t sTestCMS_SignedMessage02[] = {
    0x30, 0x81, 0xf5, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x02, 0xa0, 0x81, 0xe7, 0x30, 0x81, 0xe4, 0x02,
    0x01, 0x03, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x30, 0x50, 0x06, 0x09,
    0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x01, 0xa0, 0x43, 0x04, 0x41, 0x15, 0x24, 0x00, 0x01, 0x25, 0x01, 0xf2, 0xff,
    0x36, 0x02, 0x05, 0x01, 0x80, 0x05, 0x02, 0x80, 0x18, 0x25, 0x03, 0x34, 0x12, 0x2c, 0x04, 0x13, 0x5a, 0x49, 0x47, 0x32, 0x30,
    0x31, 0x34, 0x32, 0x5a, 0x42, 0x33, 0x33, 0x30, 0x30, 0x30, 0x32, 0x2d, 0x32, 0x34, 0x24, 0x05, 0x00, 0x24, 0x06, 0x00, 0x25,
    0x07, 0x94, 0x26, 0x24, 0x08, 0x00, 0x25, 0x09, 0xf1, 0xff, 0x25, 0x0a, 0x00, 0x80, 0x18, 0x31, 0x7e, 0x30, 0x7c, 0x02, 0x01,
    0x03, 0x80, 0x14, 0x62, 0xfa, 0x82, 0x33, 0x59, 0xac, 0xfa, 0xa9, 0x96, 0x3e, 0x1c, 0xfa, 0x14, 0x0a, 0xdd, 0xf5, 0x04, 0xf3,
    0x71, 0x60, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86,
    0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x04, 0x48, 0x30, 0x46, 0x02, 0x21, 0x00, 0x92, 0x62, 0x96, 0xf7, 0x57, 0x81, 0x58, 0xbe,
    0x7c, 0x45, 0x93, 0x88, 0x33, 0x6c, 0xa7, 0x38, 0x37, 0x66, 0xc9, 0xee, 0xdd, 0x98, 0x55, 0xcb, 0xda, 0x6f, 0x4c, 0xf6, 0xbd,
    0xf4, 0x32, 0x11, 0x02, 0x21, 0x00, 0xe0, 0xdb, 0xf4, 0xa2, 0xbc, 0xec, 0x4e, 0xa2, 0x74, 0xba, 0xf0, 0xde, 0xa2, 0x08, 0xb3,
    0x36, 0x5c, 0x6e, 0xd5, 0x44, 0x08, 0x6d, 0x10, 0x1a, 0xfd, 0xaf, 0x07, 0x9a, 0x2c, 0x23, 0xe0, 0xde
};

// Generated an untrusted CD key, and then a CD
//
// openssl ecparam -name prime256v1 -genkey -noout -out UntrustedCDKey.pem
// openssl req -x509 -key UntrustedCDKey.pem -keyform PEM -out UntrustedCDCert.pem -sha256 -days 3650
// out/host/chip-cert gen-cd -C UntrustedCDCert.pem -K UntrustedCDKey.pem --out UntrustedCD.bin -f 1 -V FFF1 -p 8000 -p 8001 -p 8002
// -p 8003 -p 8004 -p 8005 -p 8006 -p 8007 -p 8008 -p 8009 -p 800a -p 800b -p 800c -p 800d -p 800e -p 800f -p 8010 -p 8011 -p 8012
// -p 8013 -p 8014 -p 8015 -p 8016 -p 8017 -p 8018 -p 8019 -p 801a -p 801b -p 801c -p 801d -p 801e -p 801f -d 0016 -c
// "ZIG0000000000000000" -l 0 -i 0 -n 0001 -t 0
//
static constexpr uint8_t gUntrustedCd[] = {
    0x30, 0x82, 0x01, 0x49, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x02, 0xa0, 0x82, 0x01, 0x3a, 0x30, 0x82,
    0x01, 0x36, 0x02, 0x01, 0x03, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x30,
    0x81, 0xa2, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x01, 0xa0, 0x81, 0x94, 0x04, 0x81, 0x91, 0x15, 0x24,
    0x00, 0x01, 0x25, 0x01, 0xf1, 0xff, 0x36, 0x02, 0x05, 0x00, 0x80, 0x05, 0x01, 0x80, 0x05, 0x02, 0x80, 0x05, 0x03, 0x80, 0x05,
    0x04, 0x80, 0x05, 0x05, 0x80, 0x05, 0x06, 0x80, 0x05, 0x07, 0x80, 0x05, 0x08, 0x80, 0x05, 0x09, 0x80, 0x05, 0x0a, 0x80, 0x05,
    0x0b, 0x80, 0x05, 0x0c, 0x80, 0x05, 0x0d, 0x80, 0x05, 0x0e, 0x80, 0x05, 0x0f, 0x80, 0x05, 0x10, 0x80, 0x05, 0x11, 0x80, 0x05,
    0x12, 0x80, 0x05, 0x13, 0x80, 0x05, 0x14, 0x80, 0x05, 0x15, 0x80, 0x05, 0x16, 0x80, 0x05, 0x17, 0x80, 0x05, 0x18, 0x80, 0x05,
    0x19, 0x80, 0x05, 0x1a, 0x80, 0x05, 0x1b, 0x80, 0x05, 0x1c, 0x80, 0x05, 0x1d, 0x80, 0x05, 0x1e, 0x80, 0x05, 0x1f, 0x80, 0x18,
    0x24, 0x03, 0x16, 0x2c, 0x04, 0x13, 0x5a, 0x49, 0x47, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30,
    0x30, 0x30, 0x30, 0x30, 0x24, 0x05, 0x00, 0x24, 0x06, 0x00, 0x24, 0x07, 0x01, 0x24, 0x08, 0x00, 0x18, 0x31, 0x7d, 0x30, 0x7b,
    0x02, 0x01, 0x03, 0x80, 0x14, 0x75, 0xe3, 0x06, 0x0e, 0x0f, 0xce, 0x28, 0x69, 0x5d, 0x19, 0x75, 0x43, 0x32, 0xbb, 0xc7, 0x9b,
    0xeb, 0x3d, 0x60, 0x6c, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x30, 0x0a, 0x06, 0x08,
    0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x04, 0x47, 0x30, 0x45, 0x02, 0x21, 0x00, 0xf9, 0xd5, 0x91, 0x66, 0xca, 0xab,
    0x43, 0x82, 0xa7, 0x47, 0x24, 0xe6, 0x06, 0xbf, 0x1e, 0x2b, 0x4e, 0x7a, 0xb4, 0xf3, 0x04, 0x29, 0x21, 0x2b, 0x60, 0xfd, 0xa0,
    0x16, 0xea, 0xdc, 0x7d, 0x25, 0x02, 0x20, 0x62, 0xf1, 0x89, 0xfe, 0x4e, 0x60, 0x28, 0xd5, 0xc8, 0x42, 0x6a, 0xb7, 0x7e, 0xe5,
    0x1e, 0xf5, 0x68, 0x00, 0x23, 0x86, 0xba, 0x39, 0xe7, 0xab, 0x2d, 0xe5, 0x71, 0xe5, 0x36, 0x4e, 0xd0, 0x38,
};

static constexpr uint8_t gUntrustedCdCert[] = {
    0x30, 0x82, 0x01, 0xdd, 0x30, 0x82, 0x01, 0x83, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x14, 0x4e, 0x84, 0xea, 0x0a, 0x68, 0x5b,
    0xbe, 0xe2, 0xfb, 0x2d, 0xed, 0x76, 0xaf, 0xa1, 0x92, 0xc4, 0x3a, 0xce, 0x9b, 0x03, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48,
    0xce, 0x3d, 0x04, 0x03, 0x02, 0x30, 0x44, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x55, 0x53, 0x31,
    0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x08, 0x0c, 0x02, 0x43, 0x41, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x03, 0x55, 0x04, 0x0a,
    0x0c, 0x04, 0x54, 0x65, 0x73, 0x74, 0x31, 0x19, 0x30, 0x17, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x10, 0x55, 0x6e, 0x74, 0x72,
    0x75, 0x73, 0x65, 0x64, 0x20, 0x43, 0x44, 0x20, 0x63, 0x65, 0x72, 0x74, 0x30, 0x1e, 0x17, 0x0d, 0x32, 0x32, 0x30, 0x39, 0x30,
    0x36, 0x31, 0x33, 0x34, 0x39, 0x31, 0x35, 0x5a, 0x17, 0x0d, 0x33, 0x32, 0x30, 0x39, 0x30, 0x33, 0x31, 0x33, 0x34, 0x39, 0x31,
    0x35, 0x5a, 0x30, 0x44, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x55, 0x53, 0x31, 0x0b, 0x30, 0x09,
    0x06, 0x03, 0x55, 0x04, 0x08, 0x0c, 0x02, 0x43, 0x41, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x04, 0x54,
    0x65, 0x73, 0x74, 0x31, 0x19, 0x30, 0x17, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x10, 0x55, 0x6e, 0x74, 0x72, 0x75, 0x73, 0x65,
    0x64, 0x20, 0x43, 0x44, 0x20, 0x63, 0x65, 0x72, 0x74, 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, 0xbc, 0x87, 0x13, 0x3a, 0x19, 0x16,
    0x87, 0x04, 0x34, 0x1b, 0x78, 0xc5, 0x70, 0x41, 0x21, 0x14, 0xbb, 0xe5, 0x3f, 0x62, 0x45, 0x70, 0xe8, 0xf2, 0x37, 0x78, 0x77,
    0x1a, 0xf3, 0x5c, 0xd8, 0x04, 0x21, 0xc8, 0x2d, 0x40, 0x7f, 0xee, 0x37, 0xf5, 0xa5, 0x9f, 0x17, 0x26, 0x33, 0x00, 0x4d, 0xf7,
    0x66, 0xa3, 0x3a, 0x50, 0x75, 0x9f, 0xcf, 0xd2, 0xb2, 0x1b, 0x5e, 0x58, 0x75, 0x08, 0x82, 0x3e, 0xa3, 0x53, 0x30, 0x51, 0x30,
    0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16, 0x04, 0x14, 0x75, 0xe3, 0x06, 0x0e, 0x0f, 0xce, 0x28, 0x69, 0x5d, 0x19, 0x75,
    0x43, 0x32, 0xbb, 0xc7, 0x9b, 0xeb, 0x3d, 0x60, 0x6c, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16, 0x80,
    0x14, 0x75, 0xe3, 0x06, 0x0e, 0x0f, 0xce, 0x28, 0x69, 0x5d, 0x19, 0x75, 0x43, 0x32, 0xbb, 0xc7, 0x9b, 0xeb, 0x3d, 0x60, 0x6c,
    0x30, 0x0f, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x05, 0x30, 0x03, 0x01, 0x01, 0xff, 0x30, 0x0a, 0x06, 0x08,
    0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x03, 0x48, 0x00, 0x30, 0x45, 0x02, 0x21, 0x00, 0x83, 0xdd, 0x0c, 0x66, 0xa2,
    0xe3, 0x10, 0x63, 0xa1, 0x17, 0x35, 0x30, 0x13, 0x21, 0xc6, 0x9b, 0x6f, 0x4d, 0x29, 0x94, 0x06, 0xd4, 0xd7, 0xc1, 0x14, 0x01,
    0x6d, 0x05, 0x59, 0xbc, 0x40, 0xb2, 0x02, 0x20, 0x76, 0x7f, 0x58, 0x71, 0x12, 0xb4, 0x2e, 0x33, 0x07, 0xed, 0x84, 0x87, 0x06,
    0xd4, 0x77, 0xb2, 0xf2, 0xae, 0x65, 0xbd, 0x9d, 0xfe, 0x2f, 0xf8, 0x38, 0xfc, 0x47, 0x45, 0x4f, 0x0c, 0x30, 0xfd
};

static constexpr uint8_t gUntrustedCdVerifyingKeyBytes[] = {
    0x04, 0xbc, 0x87, 0x13, 0x3a, 0x19, 0x16, 0x87, 0x04, 0x34, 0x1b, 0x78, 0xc5, 0x70, 0x41, 0x21, 0x14,
    0xbb, 0xe5, 0x3f, 0x62, 0x45, 0x70, 0xe8, 0xf2, 0x37, 0x78, 0x77, 0x1a, 0xf3, 0x5c, 0xd8, 0x04, 0x21,
    0xc8, 0x2d, 0x40, 0x7f, 0xee, 0x37, 0xf5, 0xa5, 0x9f, 0x17, 0x26, 0x33, 0x00, 0x4d, 0xf7, 0x66, 0xa3,
    0x3a, 0x50, 0x75, 0x9f, 0xcf, 0xd2, 0xb2, 0x1b, 0x5e, 0x58, 0x75, 0x08, 0x82, 0x3e,
};
static const P256PublicKey gUntrustedCdVerifyingKey(gUntrustedCdVerifyingKeyBytes);

static constexpr uint8_t gUntrustedCdKid[] = {
    0x75, 0xE3, 0x06, 0x0E, 0x0F, 0xCE, 0x28, 0x69, 0x5D, 0x19, 0x75, 0x43, 0x32, 0xBB, 0xC7, 0x9B, 0xEB, 0x3D, 0x60, 0x6C,
};

static constexpr uint8_t gCdSigningCert001[] = {
    0x30, 0x82, 0x02, 0x08, 0x30, 0x82, 0x01, 0xad, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x07, 0x63, 0x73, 0x61, 0x63, 0x64, 0x73,
    0x31, 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, 0x38,
    0x31, 0x31, 0x31, 0x39, 0x33, 0x31, 0x31, 0x35, 0x5a, 0x18, 0x0f, 0x32, 0x30, 0x37, 0x32, 0x30, 0x37, 0x32, 0x39, 0x31, 0x39,
    0x33, 0x31, 0x31, 0x35, 0x5a, 0x30, 0x58, 0x31, 0x0c, 0x30, 0x0a, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x03, 0x43, 0x53, 0x41,
    0x31, 0x32, 0x30, 0x30, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x29, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74,
    0x69, 0x6f, 0x6e, 0x20, 0x44, 0x65, 0x63, 0x6c, 0x61, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x53, 0x69, 0x67, 0x6e, 0x69,
    0x6e, 0x67, 0x20, 0x4b, 0x65, 0x79, 0x20, 0x30, 0x30, 0x31, 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, 0x5b, 0x5b, 0xc3, 0xae,
    0xd6, 0xba, 0xa3, 0x83, 0xfd, 0xcf, 0x9b, 0x9d, 0x5a, 0x73, 0xfa, 0xea, 0x7e, 0x65, 0xeb, 0x59, 0x27, 0xc1, 0xc5, 0xc0, 0x2b,
    0x1c, 0xfa, 0x4b, 0x8b, 0xdb, 0x6b, 0x9b, 0x7e, 0xb2, 0x52, 0x51, 0x3f, 0x23, 0xf2, 0x2a, 0x58, 0x33, 0x9d, 0xc8, 0xad, 0xb8,
    0x80, 0x46, 0x0a, 0xc9, 0x21, 0xd3, 0x76, 0xd7, 0xb9, 0x70, 0xc5, 0x0c, 0x3b, 0xe6, 0xe6, 0xd2, 0x36, 0xf0, 0xa3, 0x66, 0x30,
    0x64, 0x30, 0x12, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x08, 0x30, 0x06, 0x01, 0x01, 0xff, 0x02, 0x01, 0x00,
    0x30, 0x0e, 0x06, 0x03, 0x55, 0x1d, 0x0f, 0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x01, 0x86, 0x30, 0x1d, 0x06, 0x03, 0x55,
    0x1d, 0x0e, 0x04, 0x16, 0x04, 0x14, 0x83, 0xfa, 0xd7, 0x81, 0xe8, 0x2d, 0x01, 0x8b, 0x4f, 0x14, 0xf0, 0xa1, 0xc7, 0xf6, 0x84,
    0x01, 0x8c, 0xc5, 0xd1, 0x9f, 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, 0x49, 0x00, 0x30, 0x46, 0x02, 0x21, 0x00, 0x86, 0xd2, 0xbb, 0xc2, 0xa8,
    0x59, 0x38, 0xf9, 0xef, 0xdd, 0x94, 0xc6, 0xd2, 0x7f, 0xb9, 0x28, 0x10, 0x5d, 0x54, 0xcb, 0x45, 0x1b, 0x26, 0xd3, 0xdc, 0xac,
    0xda, 0x6d, 0xfb, 0x27, 0x10, 0xef, 0x02, 0x21, 0x00, 0xf1, 0x63, 0x0a, 0x0d, 0xb4, 0x5b, 0xc0, 0xeb, 0x64, 0x69, 0xb2, 0x32,
    0xab, 0x00, 0xe0, 0x9a, 0x24, 0x77, 0x2b, 0x09, 0x32, 0x63, 0x06, 0xaa, 0x37, 0x81, 0x8f, 0xb1, 0x12, 0x9f, 0xc7, 0x04
};

struct TestCase
{
    ByteSpan signerCert;
    P256PublicKeySpan signerPubkey;
    CertificationElements cdElements;
    ByteSpan cdContent;
    ByteSpan cdCMSSigned;
};

static constexpr TestCase sTestCases[] = {
    { ByteSpan(sTestCMS_SignerCert), P256PublicKeySpan(sTestCMS_SignerPublicKey), sTestCMS_CertElements01,
      ByteSpan(sTestCMS_CDContent01), ByteSpan(sTestCMS_SignedMessage01) },
    { ByteSpan(sTestCMS_SignerCert), P256PublicKeySpan(sTestCMS_SignerPublicKey), sTestCMS_CertElements02,
      ByteSpan(sTestCMS_CDContent02), ByteSpan(sTestCMS_SignedMessage02) },
};

TEST(TestCertificationDeclaration, TestCD_EncodeDecode)
{
    for (const auto & testCase : sTestCases)
    {
        uint8_t encodedCertElemBuf[kCertificationElements_TLVEncodedMaxLength];
        MutableByteSpan encodedCDPayload(encodedCertElemBuf);

        EXPECT_EQ(EncodeCertificationElements(testCase.cdElements, encodedCDPayload), CHIP_NO_ERROR);
        EXPECT_TRUE(testCase.cdContent.data_equal(encodedCDPayload));

        CertificationElements decodedElements;
        EXPECT_EQ(DecodeCertificationElements(encodedCDPayload, decodedElements), CHIP_NO_ERROR);

        EXPECT_EQ(decodedElements.FormatVersion, testCase.cdElements.FormatVersion);
        EXPECT_EQ(decodedElements.VendorId, testCase.cdElements.VendorId);
        EXPECT_EQ(decodedElements.ProductIdsCount, testCase.cdElements.ProductIdsCount);
        for (uint8_t j = 0; j < decodedElements.ProductIdsCount; j++)
        {
            EXPECT_EQ(decodedElements.ProductIds[j], testCase.cdElements.ProductIds[j]);
        }
        EXPECT_EQ(decodedElements.DeviceTypeId, testCase.cdElements.DeviceTypeId);
        EXPECT_EQ(memcmp(decodedElements.CertificateId, testCase.cdElements.CertificateId, kCertificateIdLength), 0);
        EXPECT_EQ(decodedElements.SecurityLevel, testCase.cdElements.SecurityLevel);
        EXPECT_EQ(decodedElements.SecurityInformation, testCase.cdElements.SecurityInformation);
        EXPECT_EQ(decodedElements.VersionNumber, testCase.cdElements.VersionNumber);
        EXPECT_EQ(decodedElements.CertificationType, testCase.cdElements.CertificationType);
        EXPECT_EQ(decodedElements.DACOriginVIDandPIDPresent, testCase.cdElements.DACOriginVIDandPIDPresent);
        if (decodedElements.DACOriginVIDandPIDPresent)
        {
            EXPECT_EQ(decodedElements.DACOriginVendorId, testCase.cdElements.DACOriginVendorId);
            EXPECT_EQ(decodedElements.DACOriginProductId, testCase.cdElements.DACOriginProductId);
        }
        EXPECT_EQ(decodedElements.AuthorizedPAAListCount, testCase.cdElements.AuthorizedPAAListCount);
        for (uint8_t j = 0; j < decodedElements.AuthorizedPAAListCount; j++)
        {
            EXPECT_EQ(memcmp(decodedElements.AuthorizedPAAList[j], testCase.cdElements.AuthorizedPAAList[j], kKeyIdentifierLength),
                      0);
        }
    }
}

TEST(TestCertificationDeclaration, TestCD_EncodeDecode_Errors)
{
    uint8_t encodedCertElemBuf[kCertificationElements_TLVEncodedMaxLength];
    MutableByteSpan encodedCDPayload(encodedCertElemBuf);
    EXPECT_EQ(EncodeCertificationElements(sTestCMS_CertElements01, encodedCDPayload), CHIP_NO_ERROR);

    // Test Encode Error: CHIP_ERROR_BUFFER_TOO_SMALL
    // Provide a smaller buffer as an input.
    encodedCDPayload.reduce_size(encodedCDPayload.size() - 4);
    EXPECT_EQ(EncodeCertificationElements(sTestCMS_CertElements01, encodedCDPayload), CHIP_ERROR_BUFFER_TOO_SMALL);

    // Test Decode Error: CHIP_ERROR_INVALID_INTEGER_VALUE
    // Manually modified sTestCMS_CDContent01[]: updated VendorId element to 4-octet
    // (0x25, 0x01, 0xf1, 0xff, --> 0x26, 0x01, 0xf1, 0xff, 0xff, 0xff,)
    static constexpr uint8_t sTestCMS_CDContent01_Err01[] = {
        0x15, 0x24, 0x00, 0x01, 0x26, 0x01, 0xf1, 0xff, 0xff, 0xff, 0x36, 0x02, 0x05, 0x00, 0x80, 0x18, 0x25, 0x03, 0x34,
        0x12, 0x2c, 0x04, 0x13, 0x5a, 0x49, 0x47, 0x32, 0x30, 0x31, 0x34, 0x31, 0x5a, 0x42, 0x33, 0x33, 0x30, 0x30, 0x30,
        0x31, 0x2d, 0x32, 0x34, 0x24, 0x05, 0x00, 0x24, 0x06, 0x00, 0x25, 0x07, 0x94, 0x26, 0x24, 0x08, 0x00, 0x18
    };

    CertificationElements certElementsOut;
    EXPECT_EQ(DecodeCertificationElements(ByteSpan(sTestCMS_CDContent01_Err01), certElementsOut), CHIP_ERROR_INVALID_INTEGER_VALUE);

    // Test Decode Error: CHIP_ERROR_UNEXPECTED_TLV_ELEMENT
    // Manually modified sTestCMS_CDContent01[]: switched ProductIds and DeviceTypeId elements tag (0x02 <--> 0x03)
    static constexpr uint8_t sTestCMS_CDContent01_Err02[] = { 0x15, 0x24, 0x00, 0x01, 0x25, 0x01, 0xf1, 0xff, 0x36, 0x03, 0x05,
                                                              0x00, 0x80, 0x18, 0x25, 0x02, 0x34, 0x12, 0x2c, 0x04, 0x13, 0x5a,
                                                              0x49, 0x47, 0x32, 0x30, 0x31, 0x34, 0x31, 0x5a, 0x42, 0x33, 0x33,
                                                              0x30, 0x30, 0x30, 0x31, 0x2d, 0x32, 0x34, 0x24, 0x05, 0x00, 0x24,
                                                              0x06, 0x00, 0x25, 0x07, 0x94, 0x26, 0x24, 0x08, 0x00, 0x18 };
    EXPECT_EQ(DecodeCertificationElements(ByteSpan(sTestCMS_CDContent01_Err02), certElementsOut),
              CHIP_ERROR_UNEXPECTED_TLV_ELEMENT);
}

TEST(TestCertificationDeclaration, TestCD_CMSSignAndVerify)
{
    ByteSpan cdContentIn(sTestCMS_CDContent01);
    ByteSpan cdContentOut;
    uint8_t signerKeyIdBuf[Crypto::kSubjectKeyIdentifierLength];
    MutableByteSpan signerKeyId(signerKeyIdBuf);
    uint8_t signedMessageBuf[kMaxCMSSignedCDMessage];
    MutableByteSpan signedMessage(signedMessageBuf);

    EXPECT_EQ(ExtractSKIDFromX509Cert(ByteSpan(sTestCMS_SignerCert), signerKeyId), CHIP_NO_ERROR);

    // Test with random key
    P256Keypair keypair;
    EXPECT_EQ(keypair.Initialize(ECPKeyTarget::ECDSA), CHIP_NO_ERROR);
    EXPECT_EQ(CMS_Sign(cdContentIn, signerKeyId, keypair, signedMessage), CHIP_NO_ERROR);
    EXPECT_EQ(CMS_Verify(signedMessage, keypair.Pubkey(), cdContentOut), CHIP_NO_ERROR);
    EXPECT_TRUE(cdContentIn.data_equal(cdContentOut));

    // Test with known key
    P256Keypair keypair2;
    P256SerializedKeypair serializedKeypair;
    memcpy(serializedKeypair.Bytes(), sTestCMS_SignerSerializedKeypair, sizeof(sTestCMS_SignerSerializedKeypair));
    serializedKeypair.SetLength(sizeof(sTestCMS_SignerSerializedKeypair));
    cdContentIn   = ByteSpan(sTestCMS_CDContent02);
    signedMessage = MutableByteSpan(signedMessageBuf);
    EXPECT_EQ(keypair2.Deserialize(serializedKeypair), CHIP_NO_ERROR);
    EXPECT_EQ(CMS_Sign(cdContentIn, signerKeyId, keypair2, signedMessage), CHIP_NO_ERROR);
    EXPECT_EQ(CMS_Verify(signedMessage, keypair2.Pubkey(), cdContentOut), CHIP_NO_ERROR);
    EXPECT_TRUE(cdContentIn.data_equal(cdContentOut));
}

TEST(TestCertificationDeclaration, TestCD_CMSVerifyAndExtract)
{
    for (const auto & testCase : sTestCases)
    {
        // Verify using signer P256PublicKey
        ByteSpan cdContentOut;
        EXPECT_EQ(CMS_Verify(testCase.cdCMSSigned, P256PublicKey(testCase.signerPubkey), cdContentOut), CHIP_NO_ERROR);
        EXPECT_TRUE(testCase.cdContent.data_equal(cdContentOut));

        // Verify using signer X509 Certificate
        cdContentOut = ByteSpan();
        EXPECT_EQ(CMS_Verify(testCase.cdCMSSigned, testCase.signerCert, cdContentOut), CHIP_NO_ERROR);
        EXPECT_TRUE(testCase.cdContent.data_equal(cdContentOut));

        // Test CMS_ExtractCDContent()
        cdContentOut = ByteSpan();
        EXPECT_EQ(CMS_ExtractCDContent(testCase.cdCMSSigned, cdContentOut), CHIP_NO_ERROR);
        EXPECT_TRUE(testCase.cdContent.data_equal(cdContentOut));

        // Test CMS_ExtractKeyId()
        uint8_t signerKeyIdBuf[Crypto::kSubjectKeyIdentifierLength];
        MutableByteSpan signerKeyId(signerKeyIdBuf);
        EXPECT_EQ(ExtractSKIDFromX509Cert(testCase.signerCert, signerKeyId), CHIP_NO_ERROR);

        ByteSpan signerKeyIdOut;
        EXPECT_EQ(CMS_ExtractKeyId(testCase.cdCMSSigned, signerKeyIdOut), CHIP_NO_ERROR);
        EXPECT_TRUE(signerKeyId.data_equal(signerKeyIdOut));
    }
}

TEST(TestCertificationDeclaration, TestCD_CertificationElementsDecoder)
{
    for (const auto & testCase : sTestCases)
    {
        uint8_t encodedCertElemBuf[kCertificationElements_TLVEncodedMaxLength];
        MutableByteSpan encodedCDPayload(encodedCertElemBuf);

        EXPECT_EQ(EncodeCertificationElements(testCase.cdElements, encodedCDPayload), CHIP_NO_ERROR);
        EXPECT_TRUE(testCase.cdContent.data_equal(encodedCDPayload));

        CertificationElementsWithoutPIDs certificationDeclarationContent;
        CertificationElementsDecoder certificationElementsDecoder;
        EXPECT_EQ(DecodeCertificationElements(encodedCDPayload, certificationDeclarationContent), CHIP_NO_ERROR);

        EXPECT_EQ(certificationDeclarationContent.formatVersion, testCase.cdElements.FormatVersion);
        EXPECT_EQ(certificationDeclarationContent.vendorId, testCase.cdElements.VendorId);
        for (uint8_t j = 0; j < testCase.cdElements.ProductIdsCount; j++)
        {
            EXPECT_TRUE(certificationElementsDecoder.IsProductIdIn(encodedCDPayload, testCase.cdElements.ProductIds[j]));
            // now test for an unexistent ProductId
            EXPECT_FALSE(certificationElementsDecoder.IsProductIdIn(encodedCDPayload, 0x9000));
        }
        EXPECT_EQ(certificationDeclarationContent.deviceTypeId, testCase.cdElements.DeviceTypeId);
        EXPECT_EQ(memcmp(certificationDeclarationContent.certificateId, testCase.cdElements.CertificateId, kCertificateIdLength),
                  0);
        EXPECT_EQ(certificationDeclarationContent.securityLevel, testCase.cdElements.SecurityLevel);
        EXPECT_EQ(certificationDeclarationContent.securityInformation, testCase.cdElements.SecurityInformation);
        EXPECT_EQ(certificationDeclarationContent.versionNumber, testCase.cdElements.VersionNumber);
        EXPECT_EQ(certificationDeclarationContent.certificationType, testCase.cdElements.CertificationType);
        EXPECT_EQ(certificationDeclarationContent.dacOriginVIDandPIDPresent, testCase.cdElements.DACOriginVIDandPIDPresent);
        if (certificationDeclarationContent.dacOriginVIDandPIDPresent)
        {
            EXPECT_EQ(certificationDeclarationContent.dacOriginVendorId, testCase.cdElements.DACOriginVendorId);
            EXPECT_EQ(certificationDeclarationContent.dacOriginProductId, testCase.cdElements.DACOriginProductId);
        }
        if (testCase.cdElements.AuthorizedPAAListCount > 0)
        {
            EXPECT_TRUE(certificationDeclarationContent.authorizedPAAListPresent);
        }
        else
        {
            EXPECT_FALSE(certificationDeclarationContent.authorizedPAAListPresent);
        }
    }
}

TEST(TestCertificationDeclaration, TestCD_EncodeDecode_Random)
{
    CertificationElements randomElements = { .FormatVersion             = 0x6F,
                                             .VendorId                  = 0x88EA,
                                             .ProductIds                = { 0 },
                                             .ProductIdsCount           = kMaxProductIdsCount,
                                             .DeviceTypeId              = 0x1234,
                                             .CertificateId             = "ZIG20141ZB330001-24",
                                             .SecurityLevel             = 10,
                                             .SecurityInformation       = 0xFA,
                                             .VersionNumber             = 0x28CA,
                                             .CertificationType         = 1,
                                             .DACOriginVendorId         = 0x01DC,
                                             .DACOriginProductId        = 0x10EE,
                                             .DACOriginVIDandPIDPresent = false,
                                             .AuthorizedPAAList         = { { 0 } },
                                             .AuthorizedPAAListCount    = kMaxAuthorizedPAAListCount };

    uint16_t pid = 0x8000;
    for (uint8_t j = 0; j < randomElements.ProductIdsCount; j++, pid++)
    {
        randomElements.ProductIds[j] = pid;
    }
    uint8_t kid[kKeyIdentifierLength] = { 0xF4, 0x44, 0xCA, 0xBB, 0xC5, 0x01, 0x65, 0x77, 0xAA, 0x8B,
                                          0x44, 0xFF, 0xB9, 0x0F, 0xCC, 0xA1, 0x40, 0xFE, 0x66, 0x20 };
    for (uint8_t j = 0; j < randomElements.AuthorizedPAAListCount; j++)
    {
        kid[(j % kKeyIdentifierLength)] ^= 0xFF;
        memcpy(randomElements.AuthorizedPAAList[j], kid, kKeyIdentifierLength);
    }

    uint8_t encodedCertElemBuf[kCertificationElements_TLVEncodedMaxLength];
    MutableByteSpan encodedCDPayload(encodedCertElemBuf);
    CertificationElements decodedElements;

    EXPECT_EQ(EncodeCertificationElements(randomElements, encodedCDPayload), CHIP_NO_ERROR);

    EXPECT_EQ(DecodeCertificationElements(encodedCDPayload, decodedElements), CHIP_NO_ERROR);
    EXPECT_EQ(decodedElements.FormatVersion, randomElements.FormatVersion);
    EXPECT_EQ(decodedElements.VendorId, randomElements.VendorId);
    EXPECT_EQ(decodedElements.ProductIdsCount, randomElements.ProductIdsCount);
    for (uint8_t j = 0; j < decodedElements.ProductIdsCount; j++)
    {
        EXPECT_EQ(decodedElements.ProductIds[j], randomElements.ProductIds[j]);
    }
    EXPECT_EQ(decodedElements.DeviceTypeId, randomElements.DeviceTypeId);
    EXPECT_EQ(memcmp(decodedElements.CertificateId, randomElements.CertificateId, kCertificateIdLength), 0);
    EXPECT_EQ(decodedElements.SecurityLevel, randomElements.SecurityLevel);
    EXPECT_EQ(decodedElements.SecurityInformation, randomElements.SecurityInformation);
    EXPECT_EQ(decodedElements.VersionNumber, randomElements.VersionNumber);
    EXPECT_EQ(decodedElements.CertificationType, randomElements.CertificationType);
    EXPECT_EQ(decodedElements.DACOriginVIDandPIDPresent, randomElements.DACOriginVIDandPIDPresent);
    if (decodedElements.DACOriginVIDandPIDPresent)
    {
        EXPECT_EQ(decodedElements.DACOriginVendorId, randomElements.DACOriginVendorId);
        EXPECT_EQ(decodedElements.DACOriginProductId, randomElements.DACOriginProductId);
    }
    EXPECT_EQ(decodedElements.AuthorizedPAAListCount, randomElements.AuthorizedPAAListCount);
    for (uint8_t j = 0; j < decodedElements.AuthorizedPAAListCount; j++)
    {
        EXPECT_EQ(memcmp(decodedElements.AuthorizedPAAList[j], randomElements.AuthorizedPAAList[j], kKeyIdentifierLength), 0);
    }

    CertificationElementsWithoutPIDs decodedElements2;
    CertificationElementsDecoder cdElementsDecoder;
    EXPECT_EQ(DecodeCertificationElements(encodedCDPayload, decodedElements2), CHIP_NO_ERROR);

    EXPECT_EQ(decodedElements2.formatVersion, randomElements.FormatVersion);
    EXPECT_EQ(decodedElements2.vendorId, randomElements.VendorId);
    for (uint8_t j = 0; j < randomElements.ProductIdsCount; j++)
    {
        EXPECT_TRUE(cdElementsDecoder.IsProductIdIn(encodedCDPayload, randomElements.ProductIds[j]));
        // now test for an unexistent ProductId
        EXPECT_FALSE(cdElementsDecoder.IsProductIdIn(encodedCDPayload, pid++));
    }
    EXPECT_EQ(decodedElements2.deviceTypeId, randomElements.DeviceTypeId);
    EXPECT_EQ(memcmp(decodedElements2.certificateId, randomElements.CertificateId, kCertificateIdLength), 0);
    EXPECT_EQ(decodedElements2.securityLevel, randomElements.SecurityLevel);
    EXPECT_EQ(decodedElements2.securityInformation, randomElements.SecurityInformation);
    EXPECT_EQ(decodedElements2.versionNumber, randomElements.VersionNumber);
    EXPECT_EQ(decodedElements2.certificationType, randomElements.CertificationType);
    EXPECT_EQ(decodedElements2.dacOriginVIDandPIDPresent, randomElements.DACOriginVIDandPIDPresent);
    if (decodedElements2.dacOriginVIDandPIDPresent)
    {
        EXPECT_EQ(decodedElements2.dacOriginVendorId, randomElements.DACOriginVendorId);
        EXPECT_EQ(decodedElements2.dacOriginProductId, randomElements.DACOriginProductId);
    }
    EXPECT_TRUE(decodedElements2.authorizedPAAListPresent);
    for (uint8_t j = 0; j < randomElements.AuthorizedPAAListCount; j++)
    {
        EXPECT_TRUE(cdElementsDecoder.HasAuthorizedPAA(encodedCDPayload, ByteSpan(randomElements.AuthorizedPAAList[j])));
        // now test for an unexistent PAA
        kid[(kKeyIdentifierLength - 1 - j) % kKeyIdentifierLength] ^= 0x5A;
        EXPECT_FALSE(cdElementsDecoder.HasAuthorizedPAA(encodedCDPayload, ByteSpan(kid)));
    }
}

TEST(TestCertificationDeclaration, TestCD_DefaultCdTrustStore)
{
    chip::Credentials::CsaCdKeysTrustStore trustStore;

    // Make sure that for an untrusted CD, whose key is not in truststore, we cannot find the key.
    {
        ByteSpan signerKeyIdOut;
        EXPECT_EQ(CMS_ExtractKeyId(ByteSpan(gUntrustedCd), signerKeyIdOut), CHIP_NO_ERROR);
        EXPECT_FALSE(trustStore.IsCdTestKey(signerKeyIdOut));

        P256PublicKey pubKey;
        EXPECT_EQ(CHIP_ERROR_KEY_NOT_FOUND, trustStore.LookupVerifyingKey(signerKeyIdOut, pubKey));
    }

    // Verify that a payload known to use the test key passes verification w/ default truststore
    {
        const auto & testCase = sTestCases[0];
        ByteSpan signerKeyIdOut;
        EXPECT_EQ(CMS_ExtractKeyId(testCase.cdCMSSigned, signerKeyIdOut), CHIP_NO_ERROR);
        EXPECT_TRUE(trustStore.IsCdTestKey(signerKeyIdOut));

        P256PublicKey pubKey;
        ByteSpan cdContentOut;
        EXPECT_EQ(trustStore.LookupVerifyingKey(signerKeyIdOut, pubKey), CHIP_NO_ERROR);

        EXPECT_EQ(CMS_Verify(testCase.cdCMSSigned, pubKey, cdContentOut), CHIP_NO_ERROR);
        EXPECT_TRUE(testCase.cdContent.data_equal(cdContentOut));
    }

    // Verify that after adding the verifying key to the trust store, it is now possible to
    // verify the CD signature.
    {
        P256PublicKey pubKey;
        ByteSpan cdContentOut;
        EXPECT_EQ(trustStore.AddTrustedKey(ByteSpan(gUntrustedCdKid), gUntrustedCdVerifyingKey), CHIP_NO_ERROR);

        ByteSpan signerKeyIdOut;
        EXPECT_EQ(CMS_ExtractKeyId(ByteSpan(gUntrustedCd), signerKeyIdOut), CHIP_NO_ERROR);
        EXPECT_TRUE(signerKeyIdOut.data_equal(ByteSpan(gUntrustedCdKid)));

        EXPECT_EQ(trustStore.LookupVerifyingKey(signerKeyIdOut, pubKey), CHIP_NO_ERROR);
        EXPECT_TRUE(pubKey.Matches(gUntrustedCdVerifyingKey));

        EXPECT_EQ(CMS_Verify(ByteSpan(gUntrustedCd), pubKey, cdContentOut), CHIP_NO_ERROR);
    }

    // Verify that untrusted certificate key cannot be added to the trust store.
    {
        EXPECT_EQ(CHIP_ERROR_INVALID_ARGUMENT, trustStore.AddTrustedKey(ByteSpan(gUntrustedCdCert)));
    }

    // Verify that trusted certificate key can be added to the trust store.
    {
        EXPECT_EQ(trustStore.AddTrustedKey(ByteSpan(gCdSigningCert001)), CHIP_NO_ERROR);
    }
}