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HHAProtocol.h
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/**
Copyright (c) 2013 Slavomir Hustaty <[email protected]>
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use, copy,
modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
$Id$
*/
/**
|-----------------------------------------------------------------------------------------------------------------------------------------------------|
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------|
|RecAddr|SndAddr|TTL|Enc| Unused | DATA |
|-----------------------------------------------------------------------------------------------------------------------------------------------------|
* Recipient address [bytes on position 0,1]
allows addressing to 255^2 devices [65025]
* Sender address [bytes on position 0,1]
allows addressing to 255^2 devices [65025]
* TTL [byte on position 4]
* Enc - encryption used enumeration -
0x00 none/plain data sent over the air
0x01 AES128
* Encrypted or plain data [bytes on position 16-31]
allows 16byte messages
* AES 128 Encrypter - online check tool -- http://testprotect.com/appendix/AEScalc
*/
#ifndef _HHAPROTOCOL_H_
#define _HHAPROTOCOL_H_
#if ARDUINO >= 100
#include <Arduino.h>
#else
#include <WProgram.h>
#endif
#include "AESLib.h"
class HHAProtocol {
public:
HHAProtocol(byte recipientAddress[], byte senderAddress[], byte information[]);
void setRecipientAddr(byte addr[]);
void setSenderAddr(byte addr[]);
void setTTL(byte ttl);
void setDebug(boolean debugState);
boolean checkSenderAddr(byte addr[]);
boolean checkRecipientAddr(byte addr[]);
void decreaseTTL();
byte getTTL();
byte getEncryptionMethod();
void setInformation(byte information[]);
void parse(byte *data);
byte* getPacket();
byte* getRecipientAddr();
byte* getSenderAddr();
void setKey(byte key[]);
private:
void encrypt();
void decrypt();
byte _packet[32];
byte _key[16];
void setEncryption(byte encryption);
boolean hhaProtocol_DEBUG;
void calculateKey();
void printByteArrayToSerial(byte array[]);
};
#endif /* _HHAPROTOCOL_H_ */