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This commit changes the way random numbers are available with MySensors. The AVR platform uses a 32 Bit random seed build from a floating analog pin. The way of the generation of this seed is FIPS 140-2 compliant. For support MCU with a fast way to generate random data, the hwGetentropy() command is now available to allow rapid generation of random data. The ESP8266 platform uses the internal random source for randomness for hwGetentropy() and Arduino's random() function. The NRF5 platform initializes the pseudo random number generator from internal hardware number generator. The internal AES-ECB unit generates random data after filling with HWRNG data by AES-CBC. On Linux getrandom() is implemented via syscall(). signerAtsha204SoftGetNonce speed: AVR = ~14000us (sha204Soft) NRF51 = ~152us (AES-CBC), 1739us (old sha204Soft) NRF52 = ~31us (AES-CBC), 183us (old sha204Soft) ESP8266 = ~20us (RANDOM_REG32), 380us (old sha204Soft) All Nonce results tested for FIPS 140-2 compliance successfully.
69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/*
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* The MySensors Arduino library handles the wireless radio link and protocol
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* between your home built sensors/actuators and HA controller of choice.
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* The sensors forms a self healing radio network with optional repeaters. Each
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* repeater and gateway builds a routing tables in EEPROM which keeps track of the
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* network topology allowing messages to be routed to nodes.
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*
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* Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
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* Copyright (C) 2013-2017 Sensnology AB
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* Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
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*
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* Documentation: http://www.mysensors.org
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* Support Forum: http://forum.mysensors.org
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*/
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#ifndef MyHwESP8266_h
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#define MyHwESP8266_h
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#include "MyHw.h"
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#ifdef __cplusplus
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#include <Arduino.h>
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#endif
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#ifndef MY_SERIALDEVICE
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#define MY_SERIALDEVICE Serial
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#endif
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#define min(a,b) ((a)<(b)?(a):(b))
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#define max(a,b) ((a)>(b)?(a):(b))
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#define EEPROM_size (1024)
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// Define these as macros to save valuable space
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#define hwDigitalWrite(__pin, __value) digitalWrite(__pin, __value)
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#define hwDigitalRead(__pin) digitalRead(__pin)
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#define hwPinMode(__pin, __value) pinMode(__pin, __value)
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#define hwWatchdogReset() wdt_reset()
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#define hwReboot() ESP.restart()
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#define hwMillis() millis()
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// The use of randomSeed switch to pseudo random number. Keep hwRandomNumberInit empty
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#define hwRandomNumberInit()
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bool hwInit(void);
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void hwReadConfigBlock(void* buf, void* adr, size_t length);
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void hwWriteConfigBlock(void* buf, void* adr, size_t length);
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void hwWriteConfig(const int addr, uint8_t value);
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uint8_t hwReadConfig(const int addr);
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ssize_t hwGetentropy(void *__buffer, size_t __length);
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//#define MY_HW_HAS_GETRANDOM
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/**
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* Restore interrupt state.
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* Helper function for MY_CRITICAL_SECTION.
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*/
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static __inline__ void __psRestore(const uint32_t *__s)
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{
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xt_wsr_ps( *__s );
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}
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#ifndef DOXYGEN
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#define MY_CRITICAL_SECTION for ( uint32_t __psSaved __attribute__((__cleanup__(__psRestore))) = xt_rsil(15), __ToDo = 1; __ToDo ; __ToDo = 0 )
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#endif /* DOXYGEN */
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#endif // #ifdef ARDUINO_ARCH_ESP8266
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