Henrik Ekblad
10e48594d8
Conflicts: libraries/LiquidCrystal/LCD.cpp libraries/LiquidCrystal/LCD.h libraries/MySensors/MySensor.cpp libraries/MySensors/examples/MysensorMicro/MysensorMicro.ino
78 lines
2.5 KiB
C++
78 lines
2.5 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) 2013-2015 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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*******************************
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*
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* DESCRIPTION
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* Signing support created by Patrick "Anticimex" Fallberg <patrick@fallberg.net>
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* ATSHA204 signing backend. The Atmel ATSHA204 offers true random number generation and
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* HMAC-SHA256 authentication with a readout-protected key.
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*
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*/
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#ifndef MySigningAtsha204_h
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#define MySigningAtsha204_h
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#include "MyConfig.h"
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#include "MySigning.h"
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#include "utility/ATSHA204.h"
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#include <stdint.h>
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#define SIGNING_IDENTIFIER (1)
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#ifdef MY_SECURE_NODE_WHITELISTING
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typedef struct {
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uint8_t nodeId;
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uint8_t serial[SHA204_SERIAL_SZ];
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} whitelist_entry_t;
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#endif
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// The ATSHA204 is capable of generating proper random numbers for nonce
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// and can calculate HMAC-SHA256 signatures. This is enterprise-
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// level of security and ought to implement the signing needs for anybody.
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class MySigningAtsha204 : public MySigning
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{
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public:
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MySigningAtsha204(bool requestSignatures=true,
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#ifdef MY_SECURE_NODE_WHITELISTING
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uint8_t nof_whitelist_entries=0, const whitelist_entry_t* the_whitelist=NULL,
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#endif
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uint8_t atshaPin=MY_ATSHA204_PIN);
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bool getNonce(MyMessage &msg);
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bool checkTimer(void);
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bool putNonce(MyMessage &msg);
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bool signMsg(MyMessage &msg);
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bool verifyMsg(MyMessage &msg);
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private:
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ATSHA204Class atsha204;
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unsigned long timestamp;
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bool verification_ongoing;
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uint8_t current_nonce[NONCE_NUMIN_SIZE_PASSTHROUGH+SHA204_SERIAL_SZ+1];
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uint8_t temp_message[SHA_MSG_SIZE];
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uint8_t rx_buffer[SHA204_RSP_SIZE_MAX];
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uint8_t tx_buffer[SHA204_CMD_SIZE_MAX];
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void calculateSignature(MyMessage &msg);
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uint8_t* sha256(const uint8_t* data, size_t sz);
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#ifdef MY_SECURE_NODE_WHITELISTING
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uint8_t whitlist_sz;
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const whitelist_entry_t* whitelist;
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#endif
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};
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#endif
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