still wip

User/meshcore/meshframing.h

@@ -0,0 +1,29 @@
+#ifndef MESHCORE_FRAME_HEADER
+#define MESHCORE_FRAME_HEADER
+
+#include "stddef.h"
+#include "stdint.h"
+#include "lib/cifra/aes.h"
+#include "lib/cifra/hmac.h"
+#include "packetstructs.h"
+
+
+#define KEY_SIZE 16  // 128-bit AES
+#define HMAC_SIZE 2  // meshcore size
+#define MAX_FLOOD_TTL 64
+
+FrameStruct decodeFrame (unsigned char *data, unsigned char dataLen);
+
+void printFrameHeader (FrameStruct frame) ;
+
+void sendFrame (FrameStruct frame);
+
+void retransmitFrame (FrameStruct frame) ;
+
+// Verify MAC + Decrypt
+
+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);
+
+int mac_then_decrypt (const uint8_t *aes_key, const uint8_t keySize, const uint8_t *input, size_t ilen, uint8_t *plaintext);
+
+#endif