codec

func DecodeAltLeaves ¶

func DecodeAltLeaves(encoded []byte) ([][]byte, error)

DecodeAltLeaves decodes a set of alt leaves from the minimal format used by tapd: varint leaf count followed by length-prefixed raw leaf bytes.

func DeriveBurnKey ¶

func DeriveBurnKey(prevID PrevID) ([33]byte, error)

DeriveBurnKey derives a provably unspendable but unique key by tweaking the public NUMS key with a tap tweak:

burnTweak = h_tapTweak(NUMSKey || outPoint || assetID || scriptKeyXOnly)
burnKey = NUMSKey + burnTweak*G

func DeriveSTXOAltLeaves ¶

func DeriveSTXOAltLeaves(prevIDs []PrevID) ([][]byte, error)

DeriveSTXOAltLeaves returns the raw alt-leaf TLV blobs for the STXO set implied by the given prev IDs. Each leaf is encoded with script version 0 and a burn-key derived from the prev ID.

func EncodeAltLeaf ¶

func EncodeAltLeaf(scriptVersion uint16,
	scriptKey [33]byte) ([]byte, error)

EncodeAltLeaf encodes a single alt leaf as a TLV stream. The returned bytes are the per-leaf payloads carried inside the alt-leaves container format used by tapd.

func EncodeAltLeaves ¶

func EncodeAltLeaves(leaves [][]byte) ([]byte, error)

EncodeAltLeaves serializes a list of alt leaves using the minimal format expected by tapd: varint leaf count followed by length-prefixed raw leaf bytes.

func ReadVarInt ¶

func ReadVarInt(r io.Reader, scratch []byte) (uint64, error)

ReadVarInt reads a compactly encoded integer as defined by BIP-0174/LND TLV helpers.

func WriteVarInt ¶

func WriteVarInt(w io.Writer, val uint64, scratch []byte) error

WriteVarInt writes val using the compact encoding defined by BIP-0174/LND TLV helpers.