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Primes are named as in EIP-197

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Mark Spanbroek 2024-01-30 12:15:37 +01:00 committed by markspanbroek
parent a4777bade5
commit 235f11a863
1 changed files with 4 additions and 5 deletions
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9
contracts/Groth16Verifier.sol
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@ -21,10 +21,9 @@ pragma solidity 0.8.23;
import "./Groth16.sol"; import "./Groth16.sol";
contract Groth16Verifier { contract Groth16Verifier {
// The prime q in the base field F_q for G1 uint private constant _P =
uint private constant _Q =
21888242871839275222246405745257275088696311157297823662689037894645226208583; 21888242871839275222246405745257275088696311157297823662689037894645226208583;
uint256 private constant _SNARK_SCALAR_FIELD = uint256 private constant _Q =
21888242871839275222246405745257275088548364400416034343698204186575808495617; 21888242871839275222246405745257275088548364400416034343698204186575808495617;
VerifyingKey private _verifyingKey; VerifyingKey private _verifyingKey;
@ -49,7 +48,7 @@ contract Groth16Verifier {
/// The negation of p, i.e. p.addition(p.negate()) should be zero. /// The negation of p, i.e. p.addition(p.negate()) should be zero.
function negate(G1Point memory p) internal pure returns (G1Point memory) { function negate(G1Point memory p) internal pure returns (G1Point memory) {
return G1Point(p.x, (_Q - p.y) % _Q); return G1Point(p.x, (_P - p.y) % _P);
} }
/// The sum of two points of G1 /// The sum of two points of G1
@ -148,7 +147,7 @@ contract Groth16Verifier {
G1Point memory vkX = G1Point(0, 0); G1Point memory vkX = G1Point(0, 0);
for (uint i = 0; i < input.length; i++) { for (uint i = 0; i < input.length; i++) {
require( require(
input[i] < _SNARK_SCALAR_FIELD, input[i] < _Q,
"verifier-gte-snark-scalar-field" "verifier-gte-snark-scalar-field"
); );
G1Point memory product; G1Point memory product;