a880498f36
BCC extraction tool calls OEMCrypto_GetDeviceInformation() to read verified device info from TEE. If the verified device info is not available, (e.g. not implemented), it falls back to using OS properties. This CL changes the tool used by widevine internally. Another CL will update the tool for factory use. Test: Ran the tool on Pixel 7 w/wo verified device info being present Bug: 263312447 Change-Id: I71a48cc210f6a6f26f339f512a1851237ba94172
56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
// Copyright 2021 Google LLC. All Rights Reserved. This file and proprietary
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// source code may only be used and distributed under the Widevine License
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// Agreement.
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#ifndef WIDEVINE_PROVISIONER_H_
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#define WIDEVINE_PROVISIONER_H_
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#include <cppbor.h>
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#include <cstddef>
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#include <cstdint>
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#include <memory>
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#include <string>
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#include <vector>
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#include "WidevineOemcryptoInterface.h"
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namespace widevine {
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class WidevineProvisioner {
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public:
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WidevineProvisioner();
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WidevineProvisioner(const WidevineProvisioner&) = delete;
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WidevineProvisioner& operator=(const WidevineProvisioner&) = delete;
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virtual ~WidevineProvisioner() = default;
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std::vector<uint8_t> GetBcc();
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bool GenerateCertificateRequest(
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bool testMode, const std::vector<uint8_t>& endpointEncCertChain,
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std::vector<uint8_t>& deviceInfo, std::vector<uint8_t>& protectedData);
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bool GetDeviceInfo(std::vector<uint8_t>& device_info);
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private:
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bool GenerateProtectedData(
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bool test_mode,
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const std::vector<uint8_t>& endpoint_encryption_cert_chain,
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std::vector<uint8_t> bcc, std::vector<uint8_t>& protected_data) const;
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bool ValidateAndExtractEekPubAndId(
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bool test_mode,
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const std::vector<uint8_t>& endpoint_encryption_cert_chain,
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std::vector<uint8_t>* eek_pub, std::vector<uint8_t>* eek_id) const;
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cppbor::Array BuildCertReqRecipients(const std::vector<uint8_t>& pubkey,
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const std::vector<uint8_t>& kid) const;
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void InitializeCryptoInterface();
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bool GetDeviceInfoCommon(cppbor::Map& device_info_map);
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bool TryAddVerifiedDeviceInfo(cppbor::Map& device_info_map);
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std::unique_ptr<OEMCryptoInterface> crypto_interface_;
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};
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} // namespace widevine
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#endif // WIDEVINE_PROVISIONER_H_
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