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65 lines
1.7 KiB
Plaintext
65 lines
1.7 KiB
Plaintext
constant "DaoVoteInput" {
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EcFixedPointShort VALUE_COMMIT_VALUE,
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EcFixedPoint VALUE_COMMIT_RANDOM,
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EcFixedPointBase NULLIFIER_K,
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}
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contract "DaoVoteInput" {
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Base secret,
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Base serial,
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Base spend_hook,
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Base user_data,
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Base value,
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Base gov_token_id,
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Base coin_blind,
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Scalar value_blind,
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Base gov_token_blind,
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Uint32 leaf_pos,
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MerklePath path,
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Base signature_secret,
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}
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circuit "DaoVoteInput" {
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# Poseidon hash of the nullifier
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nullifier = poseidon_hash(secret, serial);
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constrain_instance(nullifier);
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# Pedersen commitment for coin's value
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vcv = ec_mul_short(value, VALUE_COMMIT_VALUE);
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vcr = ec_mul(value_blind, VALUE_COMMIT_RANDOM);
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value_commit = ec_add(vcv, vcr);
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# Since value_commit is a curve point, we fetch its coordinates
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# and constrain them:
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value_commit_x = ec_get_x(value_commit);
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value_commit_y = ec_get_y(value_commit);
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constrain_instance(value_commit_x);
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constrain_instance(value_commit_y);
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# Commitment for coin's token ID
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token_commit = poseidon_hash(gov_token_id, gov_token_blind);
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constrain_instance(token_commit);
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# Coin hash
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pub = ec_mul_base(secret, NULLIFIER_K);
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pub_x = ec_get_x(pub);
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pub_y = ec_get_y(pub);
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C = poseidon_hash(pub_x, pub_y, value, gov_token_id, serial, spend_hook, user_data, coin_blind);
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# Merkle root
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root = merkle_root(leaf_pos, path, C);
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constrain_instance(root);
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# Finally, we derive a public key for the signature and
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# constrain its coordinates:
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signature_public = ec_mul_base(signature_secret, NULLIFIER_K);
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signature_x = ec_get_x(signature_public);
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signature_y = ec_get_y(signature_public);
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constrain_instance(signature_x);
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constrain_instance(signature_y);
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# At this point we've enforced all of our public inputs.
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}
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