Frame Size Constants

Variables
const uint8_t	HELLO_NONCE_SIZE = 12u
	ChaCha20 IV length in bytes (IETF 96-bit nonce format).
const uint8_t	AUTH_TAG_SIZE = 16u
	Full Poly1305 tag length in bytes (computed internally, not fully transmitted).
const uint8_t	TRUNCATED_MAC_SIZE = 8u
	Bytes of Poly1305 MAC actually placed on the wire (first 8 of 16).
const uint8_t	DATA_PAYLOAD_SIZE = 4u
	Byte size of the encrypted payload in a DataPacket.
const uint8_t	HELLO_NONCE_SIZE = 12u
	ChaCha20 IV length in bytes (IETF 96-bit nonce format).
const uint8_t	AUTH_TAG_SIZE = 16u
	Full Poly1305 tag length in bytes (computed internally, not fully transmitted).
const uint8_t	TRUNCATED_MAC_SIZE = 8u
	Bytes of Poly1305 MAC actually placed on the wire (first 8 of 16).
const uint8_t	DATA_PAYLOAD_SIZE = 4u
	Byte size of the encrypted payload in a DataPacket.

Detailed Description

Variable Documentation

AUTH_TAG_SIZE [1/2]

const uint8_t AUTH_TAG_SIZE = 16u

Full Poly1305 tag length in bytes (computed internally, not fully transmitted).

Definition at line 55 of file protocol.h.

AUTH_TAG_SIZE [2/2]

const uint8_t AUTH_TAG_SIZE = 16u

Full Poly1305 tag length in bytes (computed internally, not fully transmitted).

Definition at line 55 of file protocol.h.

DATA_PAYLOAD_SIZE [1/2]

const uint8_t DATA_PAYLOAD_SIZE = 4u

Byte size of the encrypted payload in a DataPacket.

Covers two uint16_t fields: note_index and duration_ms. Layout: [0..1] = note_index, [2..3] = duration_ms.

Definition at line 63 of file protocol.h.

DATA_PAYLOAD_SIZE [2/2]

const uint8_t DATA_PAYLOAD_SIZE = 4u

Byte size of the encrypted payload in a DataPacket.

Covers two uint16_t fields: note_index and duration_ms. Layout: [0..1] = note_index, [2..3] = duration_ms.

Definition at line 63 of file protocol.h.

Referenced by authenticateAndPlay(), processFinPacket(), sendFinPacket(), and sendPacket().

HELLO_NONCE_SIZE [1/2]

const uint8_t HELLO_NONCE_SIZE = 12u

ChaCha20 IV length in bytes (IETF 96-bit nonce format).

Definition at line 54 of file protocol.h.

HELLO_NONCE_SIZE [2/2]

const uint8_t HELLO_NONCE_SIZE = 12u

ChaCha20 IV length in bytes (IETF 96-bit nonce format).

Definition at line 54 of file protocol.h.

Referenced by authenticateAndPlay(), processFinPacket(), processHelloBody(), rx_loop(), sendFinPacket(), sendHelloPacket(), sendPacket(), suspendSession(), and tx_loop().

TRUNCATED_MAC_SIZE [1/2]

const uint8_t TRUNCATED_MAC_SIZE = 8u

Bytes of Poly1305 MAC actually placed on the wire (first 8 of 16).

Definition at line 56 of file protocol.h.

TRUNCATED_MAC_SIZE [2/2]

const uint8_t TRUNCATED_MAC_SIZE = 8u

Bytes of Poly1305 MAC actually placed on the wire (first 8 of 16).

Definition at line 56 of file protocol.h.

Referenced by authenticateAndPlay(), processFinPacket(), sendFinPacket(), and sendPacket().