Module wfb 

WFB packet, session, crypto, and FEC assembly logic.

Structs

FecCounters

Cumulative FEC counters for a WFB receiver or assembler.

PlainAssembler

Plain WFB FEC assembler.

WfbKeypair

Ground-station WFB keypair file contents.

WfbOutput

Recovered WFB application payload.

WfbReceiver

Encrypted WFB receiver for one channel.

WfbSession

Decrypted WFB session parameters.

Enums

WfbError

Error returned while parsing, decrypting, or assembling WFB packets.

WfbEvent

Event emitted by an encrypted WFB receiver.

WfbPacket

Borrowed WFB forwarder packet.

Constants

CHACHA20_POLY1305_KEY_LEN

WFB session ChaCha20-Poly1305 key length.

CHACHA20_POLY1305_TAG_LEN

WFB session ChaCha20-Poly1305 authentication tag length.

CRYPTO_BOX_NONCE_LEN

crypto_box nonce length.

CRYPTO_BOX_PUBLICKEY_LEN

crypto_box public key length.

CRYPTO_BOX_SECRETKEY_LEN

crypto_box secret key length.

CRYPTO_BOX_TAG_LEN

crypto_box authentication tag length.

IEEE80211_HEADER_LEN

802.11 header length subtracted from WFB packet capacity.

MAX_BLOCK_IDX

Largest WFB block index before a transmitter must rotate session keys.

MAX_FEC_PAYLOAD

Maximum encrypted FEC fragment payload carried by one WFB data packet.

MAX_FORWARDER_PACKET_SIZE

Maximum WFB forwarder packet payload after the 802.11 header.

MAX_PAYLOAD_SIZE

Maximum application payload before WFB fragment headers are added.

WBLOCK_HDR_LEN

WFB data-block header length.

WFB_FEC_VDM_RS

FEC type used by WFB’s Vandermonde Reed-Solomon blocks.

WFB_PACKET_DATA

WFB packet type for encrypted data fragments.

WFB_PACKET_FEC_ONLY

Flag marking a WFB packet as parity-only FEC data.

WFB_PACKET_KEY

WFB packet type for encrypted session-key packets.

WIFI_MTU

WFB WiFi MTU used by OpenIPC forwarder packets.

WPACKET_HDR_LEN

Plain WFB payload-fragment header length.

WSESSION_DATA_LEN

Plain WFB session body length before crypto_box encryption.

WSESSION_HDR_LEN

WFB session packet header length.

Functions

parse_forwarder_packet

Parse a WFB forwarder packet as data or session-key payload.

parse_plain_packet

Parse a decrypted WFB plain packet and return payload bytes when present.