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Instance

voting_circuits::vote_proof::circuit

Struct Instance 

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pub struct Instance {
    pub van_nullifier: Base,
    pub r_vpk_x: Base,
    pub r_vpk_y: Base,
    pub vote_authority_note_new: Base,
    pub vote_commitment: Base,
    pub vote_comm_tree_root: Base,
    pub vote_comm_tree_anchor_height: Base,
    pub proposal_id: Base,
    pub voting_round_id: Base,
    pub ea_pk_x: Base,
    pub ea_pk_y: Base,
}
Expand description

Public inputs to the Vote Proof circuit (11 field elements).

These are the values posted to the vote chain that both the prover and verifier agree on. The verifier checks the proof against these values without seeing any private witnesses.

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§van_nullifier: Base

The nullifier of the old VAN being spent (prevents double-vote).

§r_vpk_x: Base

Randomized voting public key (condition 4): x-coordinate of r_vpk = vsk.ak + [alpha_v] * G.

§r_vpk_y: Base

Randomized voting public key: y-coordinate.

§vote_authority_note_new: Base

The new VAN commitment (with decremented proposal authority).

§vote_commitment: Base

The vote commitment hash.

§vote_comm_tree_root: Base

Root of the vote commitment tree at anchor height.

§vote_comm_tree_anchor_height: Base

The vote-chain height at which the tree is snapshotted.

§proposal_id: Base

Which proposal this vote is for.

§voting_round_id: Base

The voting round identifier.

§ea_pk_x: Base

Election authority public key x-coordinate.

§ea_pk_y: Base

Election authority public key y-coordinate.

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impl Instance

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pub fn from_parts( van_nullifier: Base, r_vpk_x: Base, r_vpk_y: Base, vote_authority_note_new: Base, vote_commitment: Base, vote_comm_tree_root: Base, vote_comm_tree_anchor_height: Base, proposal_id: Base, voting_round_id: Base, ea_pk_x: Base, ea_pk_y: Base, ) -> Self

Constructs an Instance from its constituent parts.

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pub fn to_halo2_instance(&self) -> Vec<Scalar> ⓘ

Serializes public inputs for halo2 proof creation/verification.

The order must match the instance column offsets defined at the top of this file (VAN_NULLIFIER, R_VPK_X, R_VPK_Y, etc.).

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