Module storage_key 

Storage Key Computation Module

Computes deterministic storage keys for Neo N3 smart contract state variables. This module implements the storage slot derivation algorithm compatible with Neo N3’s storage model.

Key Derivation

Storage keys are derived using SHA-256 hashing:

• Simple variables: SHA256(variable_name)
• Mappings: SHA256(base_slot || encoded_key1 || encoded_key2 || ...)

Key Types

• KeyFragment - Represents a single mapping key (integer, address, bytes, etc.)
• compute_state_slot - Computes base slot for a state variable
• derive_mapping_slot - Derives slot for nested mapping access

Enums

KeyFragment

Represents a single mapping key fragment used to derive a storage slot.

Functions

compute_state_slot

Compute the canonical storage slot hash for a state variable name.

derive_mapping_slot

Derive the storage slot for a mapping entry given the base slot and key fragments.

encode_fragment 🔒

encode_integer 🔒