circuits_lib::bridge_circuit::merkle_tree

Struct BlockInclusionProof

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pub struct BlockInclusionProof { /* private fields */ }

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impl BlockInclusionProof

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pub fn new(idx: u32, merkle_proof: Vec<[u8; 32]>) -> Self

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pub fn get_root(&self, txid: [u8; 32]) -> [u8; 32]

Calculates the Merkle root given a leaf transaction ID (txid, which is a mid_state_txid) and the Merkle proof path (sibling nodes from the “mid-state” tree).

The core of the SPV security enhancement is here: Each merkle_proof element (a sibling node from the mid-state tree) is first hashed with calculate_sha256. This transformed hash is then used in the standard Bitcoin Merkle combination step (calculate_double_sha256).

If leaf is the current hash and P_mid_state is a sibling from the proof path: next_hash = DSHA256(leaf || SHA256(P_mid_state)) (or reversed order).

This ensures that elements from the mid-state tree’s structure are treated distinctly from the leaf transaction IDs, preventing cross-interpretation and related attacks. The final hash should be the main Bitcoin block Merkle root.

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impl BorshDeserialize for BlockInclusionProof

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fn deserialize_reader<__R: Read>(reader: &mut __R) -> Result<Self, Error>

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fn deserialize(buf: &mut &[u8]) -> Result<Self, Error>

Deserializes this instance from a given slice of bytes. Updates the buffer to point at the remaining bytes.
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fn try_from_slice(v: &[u8]) -> Result<Self, Error>

Deserialize this instance from a slice of bytes.
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fn try_from_reader<R>(reader: &mut R) -> Result<Self, Error>
where R: Read,

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impl BorshSerialize for BlockInclusionProof

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fn serialize<__W: Write>(&self, writer: &mut __W) -> Result<(), Error>

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impl Clone for BlockInclusionProof

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fn clone(&self) -> BlockInclusionProof

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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

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

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

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq for BlockInclusionProof

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for BlockInclusionProof

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

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

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impl StructuralPartialEq for BlockInclusionProof

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