Init

User/meshcore/meshcore.h

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+#ifndef MESHCORE_HEADER
+#define MESHCORE_HEADER
+
+#include "packetstructs.h"
+#include "string.h"
+#include "sx1262.h"
+#include "lib/cifra/aes.h"
+#include "lib/cifra/sha2.h"
+#include "lib/cifra/hmac.h"
+#include "lib/base64.h"
+#include "util/log.h"
+#include <ctype.h>
+#include "stdio.h"
+
+// requires at least a 256 byte data
+FrameStruct decodeFrame (unsigned char *data, unsigned char dataLen);
+
+#define KEY_SIZE 16  // 128-bit AES
+#define HMAC_SIZE 2  // SHA256 output size
+
+int aes_encrypt_ecb (const uint8_t *key, const uint8_t *input, size_t ilen,
+                     uint8_t *output);
+
+// AES-ECB decrypt (same as Arduino's aes.decryptBlock)
+int aes_decrypt_ecb (const uint8_t *key, const uint8_t *input, size_t ilen,
+                     uint8_t *output);
+
+// HMAC-SHA256
+int hmac_sha256 (const uint8_t *key, size_t keylen, const uint8_t *input,
+                 size_t ilen, uint8_t *output);
+
+// Verify MAC + Decrypt
+int mac_then_decrypt (const uint8_t *aes_key, const uint8_t *input, size_t ilen,
+                      uint8_t *plaintext);
+
+void hexdump (const char *label, const uint8_t *data, size_t len);
+
+#define AESKeyCount 8
+
+// EncryptedPayloadStruct decodeEncryptedPayload(FrameStruct frame);
+
+GroupTextMessage decodeGroupMessage (FrameStruct frame);
+
+void printGroupMessage (GroupTextMessage msg);
+
+AdvertisementPayload decodeAdvertisement (FrameStruct frame);
+
+void printAdvertisement (AdvertisementPayload advert);
+
+void printFrameHeader (FrameStruct frame);
+
+#define AESKeyCount 8
+
+extern const uint8_t aesKeys[AESKeyCount][17];
+
+void sendFrame (FrameStruct frame);
+void sendGroupMessage (GroupTextMessage msg);
+void makeSendGroupMessage (char *txt, uint8_t keyIndex);
+void sendAdvert();
+
+#endif