Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
OneWire_Masters/ISha256MacCoprocessor.hpp
- Committer:
- IanBenzMaxim
- Date:
- 2016-04-07
- Revision:
- 48:6f9208ae280e
- Parent:
- 33:a4c015046956
- Child:
- 49:36954b62f503
File content as of revision 48:6f9208ae280e:
#ifndef ISHA256MACCOPROCESSOR_H #define ISHA256MACCOPROCESSOR_H #include <cstddef> #include <cstdint> #include "array.hpp" /// Interface for SHA-256 coprocessors compatible with the DS28E15/22/25 family. class ISha256MacCoprocessor { public: enum CmdResult { Success, OperationFailure }; typedef array<std::uint8_t, 32> DevicePage; typedef array<std::uint8_t, 32> DeviceScratchpad; typedef array<std::uint8_t, 32> Secret; typedef array<std::uint8_t, 32> Mac; typedef array<std::uint8_t, 20> WriteMacData; typedef array<std::uint8_t, 12> AuthMacData; typedef array<std::uint8_t, 12> SlaveSecretData; /// Set Master Secret in coprocessor. /// @param[in] masterSecret New master secret to set. virtual CmdResult setMasterSecret(const Secret & masterSecret) = 0; /// Compute Slave Secret in the coprocessor. /// @note Uses the previously set Master Secret in computation. /// @param[in] devicePage Page data stored on device. /// @param[in] deviceScratchpad Scratchpad data stored on device. /// @param[in] slaveSecretData Variable data field used in calculation. virtual CmdResult computeSlaveSecret(const DevicePage & devicePage, const DeviceScratchpad & deviceScratchpad, const SlaveSecretData & slaveSecretData) = 0; /// Compute Write MAC /// @note Uses the previously computed Slave Secret in computation. /// @param[in] writeMacData Variable data fields used in calculation. /// @param[out] mac The computed MAC. virtual CmdResult computeWriteMac(const WriteMacData & writeMacData, Mac & mac) const = 0; /// Compute Authentication MAC /// @note Uses the previously computed Slave Secret in computation. /// @param[in] devicePage Page data stored on device. /// @param[in] challege Random challenge for device. /// @param[in] authMacData Variable data fields used in calculation. /// @param[out] mac The computed MAC. virtual CmdResult computeAuthMac(const DevicePage & devicePage, const DeviceScratchpad & challenge, const AuthMacData & authMacData, Mac & mac) const = 0; }; #endif