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Feature/unifersal verifier as public service #34

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Feature/unifersal verifier as public service #34

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45705da
Remove unnecessary hook
Apr 4, 2024
92136f2
Add one time minting restriction to ERC20LinkedUniversalVerifier.sol
Apr 5, 2024
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11 changes: 10 additions & 1 deletion contracts/examples/ERC20LinkedUniversalVerifier.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@ contract ERC20LinkedUniversalVerifier is ERC20 {
uint64 public constant TRANSFER_REQUEST_ID_MTP_VALIDATOR = 1;

UniversalVerifier public verifier;
mapping(uint256 => address) public idToAddress;
mapping(address => uint256) public addressToId;

uint256 public TOKEN_AMOUNT_FOR_AIRDROP_PER_ID = 5 * 10 ** uint256(decimals());

Expand All @@ -33,7 +35,14 @@ contract ERC20LinkedUniversalVerifier is ERC20 {
}

function mint(address to) public {
_mint(to, TOKEN_AMOUNT_FOR_AIRDROP_PER_ID);
uint256 id = verifier.getProofStorageField(to, TRANSFER_REQUEST_ID_SIG_VALIDATOR, "userID");
id = id == 0 ? verifier.getProofStorageField(to, TRANSFER_REQUEST_ID_MTP_VALIDATOR, "userID") : id;

if (idToAddress[id] == address(0) && addressToId[to] == 0) {
idToAddress[id] = to;
addressToId[to] = id;
_mint(to, TOKEN_AMOUNT_FOR_AIRDROP_PER_ID);
}
}

function _update(
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13 changes: 0 additions & 13 deletions contracts/examples/ERC20Verifier.sol
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Expand Up @@ -44,19 +44,6 @@ contract ERC20Verifier is ERC20Upgradeable, ZKPVerifier {
$.TOKEN_AMOUNT_FOR_AIRDROP_PER_ID = 5 * 10 ** uint256(decimals());
}

function _beforeProofSubmit(
uint64 /* requestId */,
uint256[] memory inputs,
ICircuitValidator validator
) internal view override {
// check that challenge input is address of sender
address addr = PrimitiveTypeUtils.uint256LEToAddress(
inputs[validator.inputIndexOf('challenge')]
);
// this is linking between msg.sender and
require(_msgSender() == addr, 'address in proof is not a sender address');
}

function _afterProofSubmit(
uint64 requestId,
uint256[] memory inputs,
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2 changes: 1 addition & 1 deletion test/validators/universal-verifier/erc20-with-universal-verifier.ts
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Expand Up @@ -33,7 +33,7 @@ describe('ERC 20 test', function () {
let state: any, sig: any, mtp: any;
let universalVerifier: Contract, erc20LinkedUniversalVerifier: Contract;

before(async () => {
beforeEach(async () => {
const contractsSig = await deployValidatorContracts(
'VerifierSigWrapper',
'CredentialAtomicQuerySigV2Validator'
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