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67 lines
1.5 KiB
Plaintext
67 lines
1.5 KiB
Plaintext
constant "Opcodes" {
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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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witness "Opcodes" {
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Base value,
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Scalar value_blind,
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Base blind,
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Base a,
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Base b,
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Base secret,
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EcNiPoint pubkey,
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Base ephem_secret,
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Uint32 leaf_pos,
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MerklePath path,
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}
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circuit "Opcodes" {
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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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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(ec_get_x(value_commit));
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constrain_instance(ec_get_y(value_commit));
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vcv2 = ec_mul_short(value, VALUE_COMMIT_VALUE);
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vcr2 = ec_mul(value_blind, VALUE_COMMIT_RANDOM);
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value_commit2 = ec_add(vcv2, vcr2);
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constrain_equal_point(value_commit, value_commit2);
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one = witness_base(1);
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c = poseidon_hash(one, blind);
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constrain_instance(c);
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d = poseidon_hash(one, blind, ec_get_x(value_commit), ec_get_y(value_commit));
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constrain_instance(d);
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d2 = poseidon_hash(one, blind, ec_get_x(value_commit2), ec_get_y(value_commit2));
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constrain_equal_base(d, d2);
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range_check(64, a);
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range_check(253, b);
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less_than_strict(a, b);
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less_than_loose(a, b);
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root = merkle_root(leaf_pos, path, c);
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constrain_instance(root);
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public = ec_mul_base(secret, NULLIFIER_K);
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constrain_instance(ec_get_x(public));
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constrain_instance(ec_get_y(public));
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bool_check(one);
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ephem_public = ec_mul_var_base(ephem_secret, pubkey);
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constrain_instance(ec_get_x(ephem_public));
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constrain_instance(ec_get_y(ephem_public));
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}
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