d00616
6c12dddf5a
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.
99 lines
2.7 KiB
C
99 lines
2.7 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/MySensors/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 MyHwLinuxGeneric_h
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#define MyHwLinuxGeneric_h
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#include <cstdlib>
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#include <pthread.h>
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#include "MyHw.h"
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#include "SerialPort.h"
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#include "SerialSimulator.h"
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#ifdef MY_GATEWAY_SERIAL
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#ifdef MY_LINUX_IS_SERIAL_PTY
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SerialPort Serial = SerialPort(MY_LINUX_SERIAL_PTY, true);
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#else
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SerialPort Serial = SerialPort(MY_LINUX_SERIAL_PORT);
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#endif
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#else
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SerialSimulator Serial = SerialSimulator();
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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 these as macros (do nothing)
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#define hwWatchdogReset()
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#define hwReboot()
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inline void hwDigitalWrite(uint8_t, uint8_t);
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inline int hwDigitalRead(uint8_t);
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inline void hwPinMode(uint8_t, uint8_t);
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bool hwInit(void);
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inline void hwReadConfigBlock(void* buf, void* addr, size_t length);
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inline void hwWriteConfigBlock(void* buf, void* addr, size_t length);
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inline uint8_t hwReadConfig(int addr);
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inline void hwWriteConfig(int addr, uint8_t value);
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inline void hwRandomNumberInit();
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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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inline unsigned long hwMillis();
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#ifdef MY_RF24_IRQ_PIN
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static pthread_mutex_t hw_mutex = PTHREAD_MUTEX_INITIALIZER;
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static __inline__ void __hwUnlock(const uint8_t *__s)
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{
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pthread_mutex_unlock(&hw_mutex);
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(void)__s;
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}
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static __inline__ void __hwLock()
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{
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pthread_mutex_lock(&hw_mutex);
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}
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#endif
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#if defined(DOXYGEN)
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#define ATOMIC_BLOCK_CLEANUP
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#elif defined(MY_RF24_IRQ_PIN)
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#define ATOMIC_BLOCK_CLEANUP uint8_t __atomic_loop \
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__attribute__((__cleanup__( __hwUnlock ))) = 1
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#else
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#define ATOMIC_BLOCK_CLEANUP
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#endif /* DOXYGEN */
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#if defined(DOXYGEN)
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#define ATOMIC_BLOCK
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#elif defined(MY_RF24_IRQ_PIN)
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#define ATOMIC_BLOCK for ( ATOMIC_BLOCK_CLEANUP, __hwLock(); \
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__atomic_loop ; __atomic_loop = 0 )
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#else
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#define ATOMIC_BLOCK
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#endif /* DOXYGEN */
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#ifndef DOXYGEN
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#define MY_CRITICAL_SECTION ATOMIC_BLOCK
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#endif /* DOXYGEN */
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#endif
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