Module hash 

Tagged Merkle hashing for binary Merkle trees (HSH-007).

Normative: HSH-007 / hashing NORMATIVE
Crate spec: SPEC §3.3
Prefixes: crate::HASH_LEAF_PREFIX and crate::HASH_TREE_PREFIX (BLK-005).

What this module is for

• hash_leaf and hash_node are the explicit SHA-256 formulas Chia uses for leaf and internal nodes in chia_sdk_types::MerkleTree (see merkle_tree.rs in that crate: HASH_LEAF_PREFIX = &[1], HASH_TREE_PREFIX = &[2] — upstream source).
• DIG block code builds those trees via the crate-internal merkle_util::merkle_tree_root helper and direct chia_sdk_types::MerkleTree::new calls; do not hand-roll a parallel Merkle implementation with different tags.

What this is not

• chia_consensus::merkle_set::compute_merkle_set_root (additions/removals roots) uses Chia’s radix / sorted-set tree and a different internal hash(ltype, rtype, left, right) — not 0x01||data / 0x02||a||b. That path is correct for HSH-004/HSH-005 but is out of scope for the formulas in this file (see the crate-internal merkle_util module for Merkle-set callers).

Rationale

Exposing hash_leaf / hash_node makes the domain separation testable and gives downstream crates a single place to name the tagging scheme, while the actual tree shape remains delegated to chia-sdk-types.

Functions

hash_leaf

Leaf digest: SHA-256( HASH_LEAF_PREFIX ‖ data ) (SPEC §3.3).

hash_node

Internal node digest: SHA-256( HASH_TREE_PREFIX ‖ left ‖ right ) (SPEC §3.3).