Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
Authenticators/ISha256MacCoproc.h
- Committer:
- IanBenzMaxim
- Date:
- 2016-05-12
- Revision:
- 73:2cecc1372acc
- Parent:
- OneWire_Masters/ISha256MacCoprocessor.hpp@ 49:36954b62f503
- Child:
- 74:23be10c32fa3
File content as of revision 73:2cecc1372acc:
#ifndef OneWire_Authenticators_ISha256MacCoproc #define OneWire_Authenticators_ISha256MacCoproc #include <stddef.h> #include <stdint.h> #include "array.h" namespace OneWire { namespace Authenticators { /// Interface for SHA-256 coprocessors compatible with the DS28E15/22/25 family and similar. class ISha256MacCoproc { public: enum CmdResult { Success, OperationFailure }; /// Holds the contents of a device memory page. typedef array<uint8_t, 32> DevicePage; /// Holds the contents of a device scratchpad. typedef array<uint8_t, 32> DeviceScratchpad; /// Holds the contents of a device secret. typedef array<uint8_t, 32> Secret; /// Container for a SHA-256 MAC. typedef array<uint8_t, 32> Mac; /// Additional data fields for Compute Write MAC operation. typedef array<uint8_t, 20> WriteMacData; /// Additional data fields for the Compute Auth. MAC operation. typedef array<uint8_t, 12> AuthMacData; /// Additional data field for the Compute Slave Secret operation. typedef array<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 Additional data fields as specified by device. 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 Additional data fields as specified by device. /// @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 Additional data fields as specified by device. /// @param[out] mac The computed MAC. virtual CmdResult computeAuthMac(const DevicePage & devicePage, const DeviceScratchpad & challenge, const AuthMacData & authMacData, Mac & mac) const = 0; }; } } #endif