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.

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§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§

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impl ControlBlock

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

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 encode<W>(&self, writer: &mut W) -> Result<usize, Error>
where W: Write + ?Sized,

Serializes to a writer.

§Returns

The number of bytes written to the writer.

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 ) -> bool
where 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§

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impl Clone for ControlBlock

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fn clone(&self) -> ControlBlock

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ControlBlock

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for ControlBlock

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fn deserialize<__D>( __deserializer: __D ) -> Result<ControlBlock, <__D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Hash for ControlBlock

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fn hash<__H>(&self, state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for ControlBlock

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fn cmp(&self, other: &ControlBlock) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 · source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for ControlBlock

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fn eq(&self, other: &ControlBlock) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for ControlBlock

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fn partial_cmp(&self, other: &ControlBlock) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Serialize for ControlBlock

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fn serialize<__S>( &self, __serializer: __S ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Eq for ControlBlock

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impl StructuralPartialEq for ControlBlock

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,