Struct bdk_chain::bitcoin::taproot::ControlBlock
pub struct ControlBlock {
pub leaf_version: LeafVersion,
pub output_key_parity: Parity,
pub internal_key: XOnlyPublicKey,
pub merkle_branch: TaprootMerkleBranch,
}
Expand description
Control block data structure used in Tapscript satisfaction.
Fields§
§leaf_version: LeafVersion
The tapleaf version.
output_key_parity: Parity
The parity of the output key (NOT THE INTERNAL KEY WHICH IS ALWAYS XONLY).
internal_key: XOnlyPublicKey
The internal key.
merkle_branch: TaprootMerkleBranch
The merkle proof of a script associated with this leaf.
Implementations§
§impl ControlBlock
impl ControlBlock
pub fn decode(sl: &[u8]) -> Result<ControlBlock, TaprootError>
pub fn decode(sl: &[u8]) -> Result<ControlBlock, TaprootError>
Decodes bytes representing a ControlBlock
.
This is an extra witness element that provides the proof that taproot script pubkey is correctly computed with some specified leaf hash. This is the last element in taproot witness when spending a output via script path.
§Errors
TaprootError::InvalidControlBlockSize
ifsl
is not of size 1 + 32 + 32N for any N >= 0.TaprootError::InvalidTaprootLeafVersion
if first byte ofsl
is not a valid leaf version.TaprootError::InvalidInternalKey
if internal key is invalid (first 32 bytes after the parity byte).TaprootError::InvalidMerkleTreeDepth
if merkle tree is too deep (more than 128 levels).
pub fn size(&self) -> usize
pub fn size(&self) -> usize
Returns the size of control block. Faster and more efficient than calling
Self::serialize().len()
. Can be handy for fee estimation.
pub fn serialize(&self) -> Vec<u8> ⓘ
pub fn serialize(&self) -> Vec<u8> ⓘ
Serializes the control block.
This would be required when using ControlBlock
as a witness element while spending an
output via script path. This serialization does not include the crate::VarInt
prefix that would
be applied when encoding this element as a witness.
pub fn verify_taproot_commitment<C>(
&self,
secp: &Secp256k1<C>,
output_key: XOnlyPublicKey,
script: &Script
) -> boolwhere
C: Verification,
pub fn verify_taproot_commitment<C>(
&self,
secp: &Secp256k1<C>,
output_key: XOnlyPublicKey,
script: &Script
) -> boolwhere
C: Verification,
Verifies that a control block is correct proof for a given output key and script.
Only checks that script is contained inside the taptree described by output key. Full verification must also execute the script with witness data.
Trait Implementations§
§impl Clone for ControlBlock
impl Clone for ControlBlock
§fn clone(&self) -> ControlBlock
fn clone(&self) -> ControlBlock
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read more§impl Debug for ControlBlock
impl Debug for ControlBlock
§impl<'de> Deserialize<'de> for ControlBlock
impl<'de> Deserialize<'de> for ControlBlock
§fn deserialize<__D>(
__deserializer: __D
) -> Result<ControlBlock, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D
) -> Result<ControlBlock, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
§impl Hash for ControlBlock
impl Hash for ControlBlock
§impl Ord for ControlBlock
impl Ord for ControlBlock
§impl PartialEq for ControlBlock
impl PartialEq for ControlBlock
§fn eq(&self, other: &ControlBlock) -> bool
fn eq(&self, other: &ControlBlock) -> bool
self
and other
values to be equal, and is used
by ==
.§impl PartialOrd for ControlBlock
impl PartialOrd for ControlBlock
§fn partial_cmp(&self, other: &ControlBlock) -> Option<Ordering>
fn partial_cmp(&self, other: &ControlBlock) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read more