Device interface library for multiple platforms including Mbed.
Dependents: DeepCover Embedded Security in IoT MaximInterface MAXREFDES155#
Maxim Interface is a library framework focused on providing flexible and expressive hardware interfaces. Both communication interfaces such as I2C and 1-Wire and device interfaces such as DS18B20 are supported. Modern C++ concepts are used extensively while keeping compatibility with C++98/C++03 and requiring no external dependencies. The embedded-friendly design does not depend on exceptions or RTTI.
The full version of the project is hosted on GitLab: https://gitlab.com/iabenz/MaximInterface
Diff: MaximInterfaceDevices/DS28C39.hpp
- Revision:
- 7:9cd16581b578
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- 8:5ea891c7d1a1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MaximInterfaceDevices/DS28C39.hpp Mon Jul 22 11:44:07 2019 -0500 @@ -0,0 +1,444 @@ +/******************************************************************************* +* Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved. +* +* Permission is hereby granted, free of charge, to any person obtaining a +* copy of this software and associated documentation files (the "Software"), +* to deal in the Software without restriction, including without limitation +* the rights to use, copy, modify, merge, publish, distribute, sublicense, +* and/or sell copies of the Software, and to permit persons to whom the +* Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included +* in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES +* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +* OTHER DEALINGS IN THE SOFTWARE. +* +* Except as contained in this notice, the name of Maxim Integrated +* Products, Inc. shall not be used except as stated in the Maxim Integrated +* Products, Inc. Branding Policy. +* +* The mere transfer of this software does not imply any licenses +* of trade secrets, proprietary technology, copyrights, patents, +* trademarks, maskwork rights, or any other form of intellectual +* property whatsoever. Maxim Integrated Products, Inc. retains all +* ownership rights. +*******************************************************************************/ + +#ifndef MaximInterfaceDevices_DS28C39 +#define MaximInterfaceDevices_DS28C39 + +#include <stdint.h> +#include <MaximInterfaceCore/Algorithm.hpp> +#include <MaximInterfaceCore/array_span.hpp> +#include <MaximInterfaceCore/Ecc256.hpp> +#include <MaximInterfaceCore/FlagSet.hpp> +#include <MaximInterfaceCore/ManId.hpp> +#include <MaximInterfaceCore/RomId.hpp> +#include <MaximInterfaceCore/RunCommand.hpp> +#include <MaximInterfaceCore/system_error.hpp> +#include "Config.hpp" + +namespace MaximInterfaceDevices { + +class DS28C39 { +public: + /// Device command results. + enum ErrorValue { + InvalidOperationError = 0x55, + InvalidParameterError = 0x77, + InvalidSequenceError = 0x33, + InternalError = 0x22, + DeviceDisabledError = 0x88, + AuthenticationError = 0x100, + InvalidResponseError ///< Command response does not match expected format. + }; + + /// @name Device memory pages + /// @{ + + static const int authorityPublicKeyXPage = 5; + static const int authorityPublicKeyYPage = 6; + static const int writePublicKeyXPage = 7; + static const int writePublicKeyYPage = 8; + + /// @} + + static const int memoryPages = 9; + + /// Holds a device memory page. + typedef Core::array_span<uint_least8_t, 32> Page; + + // Format page authentication input data. + class PageAuthenticationData; + + // Format authenticated write input data. + class WriteAuthenticationData; + + /// Page protection types. + enum PageProtectionType { + RP = 0x01, ///< Read protection. + WP = 0x02, ///< Write protection. + EM = 0x04, ///< EPROM emulation mode. + ECW = 0x10 ///< Authenticated write. + }; + typedef Core::FlagSet<PageProtectionType, 5> PageProtection; + + struct Status { + enum EntropyHealthTestStatus { + TestNotPerformed = 0xFF, + EntropyHealthy = 0xAA, + EntropyNotHealthy = 0xDD + }; + + typedef Core::array<PageProtection, memoryPages - 2> PageProtectionList; + typedef Core::array<uint_least8_t, 2> RomVersion; + + PageProtectionList pageProtection; + Core::RomId::array romId; + Core::ManId::array manId; + RomVersion romVersion; + EntropyHealthTestStatus entropyHealthTestStatus; + }; + + explicit DS28C39(const Core::RunCommand & runCommand) + : doRunCommand(runCommand) {} + + void setRunCommand(const Core::RunCommand & runCommand) { + doRunCommand = runCommand; + } + + /// @brief Write memory with no protection. + /// @param pageNum Number of page to write. + /// @param page Data to write. + MaximInterfaceDevices_EXPORT Core::error_code + writeMemory(int pageNum, Page::const_span page); + + /// @brief Read memory with no protection. + /// @param pageNum Number of page to read. + /// @param[out] page Data that was read. + MaximInterfaceDevices_EXPORT Core::error_code readMemory(int pageNum, + Page::span page); + + /// @brief + /// Reads the current status of the device and optionally performs an + /// entropy health test. + /// @param entropyHealthTest True to perform an entropy health test. + /// @param[out] status Status that was read. + MaximInterfaceDevices_EXPORT Core::error_code + readStatus(bool entropyHealthTest, Status & status); + + /// @brief Set the protection settings of a page. + /// @param pageNum Number of page to write. + /// @param protection Protection to write. + MaximInterfaceDevices_EXPORT Core::error_code + setPageProtection(int pageNum, const PageProtection & protection); + + /// @brief Compute and read page authentication with ECDSA. + /// @param pageNum Number of page to authenticate. + /// @param anonymous True to disable use of ROM ID in computation. + /// @param challenge Random challenge used to prevent replay attacks. + /// @param[out] signature Computed page signature. + MaximInterfaceDevices_EXPORT Core::error_code + computeAndReadPageAuthentication(int pageNum, bool anonymous, + Page::const_span challenge, + Core::Ecc256::Signature::span signature); + + /// Permanently disable the device. + MaximInterfaceDevices_EXPORT Core::error_code disableDevice(); + + /// @brief Generate the device's ECDSA public key from the PUF private key. + /// @param[out] devicePublicKey Device Public Key + MaximInterfaceDevices_EXPORT Core::error_code + readDevicePublicKey(Core::Ecc256::PublicKey::span devicePublicKey); + + /// @brief Read a block of random data from the RNG. + /// @param[out] data Random data from RNG with length from 1 to 64. + MaximInterfaceDevices_EXPORT Core::error_code + readRng(Core::span<uint_least8_t> data); + + /// @brief + /// Authenticate a public key for authenticated writes using the + /// Authority Public Key. + /// @param certificate + /// Certificate to use for authentication of the Write Public Key. + /// @param customization + /// Certificate customization with length from 1 to 32. + MaximInterfaceDevices_EXPORT Core::error_code + authenticatePublicKey(Core::Ecc256::Signature::const_span certificate, + Core::span<const uint_least8_t> customization); + + /// @brief Write with ECDSA authentication using the Write Public Key. + /// @param pageNum Number of page to write. + /// @param page Data to write. + /// @param signature Signature to use for authentication of page data. + MaximInterfaceDevices_EXPORT Core::error_code + authenticatedWriteMemory(int pageNum, Page::const_span page, + Core::Ecc256::Signature::const_span signature); + + MaximInterfaceDevices_EXPORT static const Core::error_category & + errorCategory(); + +protected: + MaximInterfaceDevices_EXPORT Core::error_code + runCommand(Core::span<const uint_least8_t> request, int delayTime, + Core::span<uint_least8_t> & response); + + MaximInterfaceDevices_EXPORT Core::error_code + runCommand(Core::span<const uint_least8_t> request, int delayTime); + +private: + Core::RunCommand doRunCommand; +}; + +inline Core::error_code make_error_code(DS28C39::ErrorValue e) { + return Core::error_code(e, DS28C39::errorCategory()); +} + +/// @brief Read the device ROM ID and MAN ID using the Read Status command. +/// @param ds28c39 Device to read. +/// @param[out] romId Read ROM ID valid when operation is successful. +/// @param[out] manId Read MAN ID valid when operation is successful. +MaximInterfaceDevices_EXPORT Core::error_code +readRomIdAndManId(DS28C39 & ds28c39, Core::RomId::span romId, + Core::ManId::span manId); + +/// Format page authentication input data. +class DS28C39::PageAuthenticationData { +public: + typedef Core::array_span<uint_least8_t, Core::RomId::size + 2 * Page::size + + 1 + Core::ManId::size> + Result; + + PageAuthenticationData() : result_() {} + + /// Formatted data result. + Result::const_span result() const { return result_; } + + /// @name ROM ID + /// @brief 1-Wire ROM ID of the device. + /// @{ + + /// Get mutable ROM ID. + Core::RomId::span romId() { + return make_span(result_).subspan<romIdIdx, Core::RomId::size>(); + } + + /// Get immutable ROM ID. + Core::RomId::const_span romId() const { + return const_cast<PageAuthenticationData &>(*this).romId(); + } + + /// Set ROM ID. + PageAuthenticationData & setRomId(Core::RomId::const_span romId) { + copy(romId, this->romId()); + return *this; + } + + /// Set ROM ID for use in anonymous mode. + MaximInterfaceDevices_EXPORT PageAuthenticationData & setAnonymousRomId(); + + /// @} + + /// @name Page + /// @brief Data from a device memory page. + /// @{ + + /// Get mutable page. + Page::span page() { + return make_span(result_).subspan<pageIdx, Page::size>(); + } + + /// Get immutable page. + Page::const_span page() const { + return const_cast<PageAuthenticationData &>(*this).page(); + } + + /// Set page. + PageAuthenticationData & setPage(Page::const_span page) { + copy(page, this->page()); + return *this; + } + + /// @} + + /// @name Challenge + /// @brief Random challenge used to prevent replay attacks. + /// @{ + + /// Get mutable Challenge. + Page::span challenge() { + return make_span(result_).subspan<challengeIdx, Page::size>(); + } + + /// Get immutable Challenge. + Page::const_span challenge() const { + return const_cast<PageAuthenticationData &>(*this).challenge(); + } + + /// Set Challenge. + PageAuthenticationData & setChallenge(Page::const_span challenge) { + copy(challenge, this->challenge()); + return *this; + } + + /// @} + + /// @name Page number + /// @brief Number of the page to use data from. + /// @{ + + /// Get page number. + int pageNum() const { return result_[pageNumIdx]; } + + /// Set page number. + PageAuthenticationData & setPageNum(int pageNum) { + result_[pageNumIdx] = pageNum; + return *this; + } + + /// @} + + /// @name MAN ID + /// @brief Manufacturer ID of the device. + /// @{ + + /// Get mutable MAN ID. + Core::ManId::span manId() { + return make_span(result_).subspan<manIdIdx, Core::ManId::size>(); + } + + /// Get immutable MAN ID. + Core::ManId::const_span manId() const { + return const_cast<PageAuthenticationData &>(*this).manId(); + } + + /// Set MAN ID. + PageAuthenticationData & setManId(Core::ManId::const_span manId) { + copy(manId, this->manId()); + return *this; + } + + /// @} + +private: + typedef Result::span::index_type index; + + static const index romIdIdx = 0; + static const index pageIdx = romIdIdx + Core::RomId::size; + static const index challengeIdx = pageIdx + Page::size; + static const index pageNumIdx = challengeIdx + Page::size; + static const index manIdIdx = pageNumIdx + 1; + + Result::array result_; +}; + +/// Format authenticated write input data. +class DS28C39::WriteAuthenticationData { +public: + typedef PageAuthenticationData::Result Result; + + WriteAuthenticationData() : data() { setPageNum(0); } + + /// Formatted data result. + Result::const_span result() const { return data.result(); } + + /// @name ROM ID + /// @brief 1-Wire ROM ID of the device. + /// @{ + + /// Get mutable ROM ID. + Core::RomId::span romId() { return data.romId(); } + + /// Get immutable ROM ID. + Core::RomId::const_span romId() const { return data.romId(); } + + /// Set ROM ID. + WriteAuthenticationData & setRomId(Core::RomId::const_span romId) { + data.setRomId(romId); + return *this; + } + + /// @} + + /// @name Old page + /// @brief Existing data contained in the page. + /// @{ + + /// Get mutable old page. + Page::span oldPage() { return data.page(); } + + /// Get immutable old page. + Page::const_span oldPage() const { return data.page(); } + + /// Set old page. + WriteAuthenticationData & setOldPage(Page::const_span oldPage) { + data.setPage(oldPage); + return *this; + } + + /// @} + + /// @name New page + /// @brief New data to write to the page. + /// @{ + + /// Get mutable new page. + Page::span newPage() { return data.challenge(); } + + /// Get immutable new page. + Page::const_span newPage() const { return data.challenge(); } + + /// Set new page. + WriteAuthenticationData & setNewPage(Page::const_span newPage) { + data.setChallenge(newPage); + return *this; + } + + /// @} + + /// @name Page number + /// @brief Page number for write operation. + /// @{ + + /// Get page number. + int pageNum() const { return data.pageNum() & 0x7F; } + + /// Set page number. + WriteAuthenticationData & setPageNum(int pageNum) { + data.setPageNum(pageNum | 0x80); + return *this; + } + + /// @} + + /// @name MAN ID + /// @brief Manufacturer ID of the device. + /// @{ + + /// Get mutable MAN ID. + Core::ManId::span manId() { return data.manId(); } + + /// Get immutable MAN ID. + Core::ManId::const_span manId() const { return data.manId(); } + + /// Set MAN ID. + WriteAuthenticationData & setManId(Core::ManId::const_span manId) { + data.setManId(manId); + return *this; + } + + /// @} + +private: + PageAuthenticationData data; +}; + +} // namespace MaximInterfaceDevices + +#endif