45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
#ifndef MESHCORE_FRAME_HEADER
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#define MESHCORE_FRAME_HEADER
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#include "stddef.h"
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#include "stdint.h"
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#include "lib/cifra/aes.h"
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#include "lib/cifra/hmac.h"
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#include "packetstructs.h"
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#define KEY_SIZE 16 // 128-bit AES
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#define HMAC_SIZE 2 // meshcore size
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#define MAX_FLOOD_TTL 64
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#define NON_RETX_HISTORY 64
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int ReadFrame (FrameStruct *frame, int8_t *rssiPacket, int8_t *snrPacket, int8_t *rawSnr);
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void LoRaTransmit (const FrameStruct *frame);
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/*
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FrameStruct decodeFrame (unsigned char *data, unsigned char dataLen);
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void sendFrame (const FrameStruct * frame);
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*/
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void printFrameHeader (const FrameStruct *frame);
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// CALL LAST, PATH GETS MODIFIED
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void retransmitFrame (FrameStruct *frame);
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// Verify MAC + Decrypt
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int encrypt_then_mac (const uint8_t *aes_key, const uint8_t keySize, const uint8_t *plaintext, size_t plen, uint8_t *output, size_t *olen);
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int mac_then_decrypt (const uint8_t *aes_key, const uint8_t keySize, const uint8_t *input, size_t ilen, uint8_t *plaintext);
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void addToNotReTX(const FrameStruct *frame);
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typedef struct KnownPacketHistoryType {
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uint8_t hash[32];
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uint8_t populated;
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} KnownPacketHistoryType;
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#endif |