d8ce542ff9
Validator that can parse and validate device info Cbor object. This is to support better prov40 unit tests regarding OEMCrypto_GetDeviceInformation() later. Test: opk_ta_p40 Bug: 300304834 Change-Id: Ic260a6626dffcbef5d6b386263839499f83a69db
55 lines
2.1 KiB
C++
55 lines
2.1 KiB
C++
// Copyright 2023 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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//
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// Reference implementation utilities of OEMCrypto APIs
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//
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#ifndef WVOEC_UTIL_DEVICE_INFO_VALIDATOR_H_
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#define WVOEC_UTIL_DEVICE_INFO_VALIDATOR_H_
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#include <sstream>
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#include <string>
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#include <vector>
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#include "cbor_validator.h"
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#include "cppbor.h"
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namespace wvoec {
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namespace util {
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// DeviceInfoValidator parses and validates a Cbor struct of DeviceInfo used by
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// Provisioning 4.0. DeviceInfo definition:
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// https://source.corp.google.com/h/googleplex-android/platform/superproject/main/+/main:hardware/interfaces/security/rkp/aidl/android/hardware/security/keymint/DeviceInfoV3.cddl
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class DeviceInfoValidator : public CborValidator {
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public:
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explicit DeviceInfoValidator(int version_number)
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: version_number_(version_number) {}
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DeviceInfoValidator() = delete;
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virtual ~DeviceInfoValidator() override = default;
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DeviceInfoValidator(const DeviceInfoValidator&) = delete;
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DeviceInfoValidator& operator=(const DeviceInfoValidator&) = delete;
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// Decodes |device_info| and sets |message_status_|.
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virtual CborMessageStatus Parse(
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const std::vector<uint8_t>& device_info) override;
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// Verifies the Cbor struct of a client generated device info.
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virtual CborMessageStatus Validate() override;
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// Outputs DeviceInfo in YAML.
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virtual std::string GetFormattedMessage() const override;
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private:
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// Checks whether a device info entry with |entry_name| and |major_type|
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// exists in |device_info| map.
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void CheckDeviceInfoMapEntry(const cppbor::Map& device_info,
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cppbor::MajorType major_type,
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const std::string& entry_name);
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// Used to generate formatted message.
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std::stringstream msg_ss_;
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// Device info version. Validations are done based on the version number.
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int version_number_;
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// Saved Cbor-encoded device info.
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std::vector<uint8_t> device_info_bytes_;
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};
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} // namespace util
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} // namespace wvoec
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#endif // WVOEC_UTIL_DEVICE_INFO_VALIDATOR_H_
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