# src: https://github.com/kilic/rlnapp/blob/master/packages/contracts/contracts/RLN.sol # pragma solidity 0.7.4; # import { IPoseidonHasher } from "./crypto/PoseidonHasher.sol"; # contract RLN { # uint256 public immutable MEMBERSHIP_DEPOSIT; # uint256 public immutable DEPTH; # uint256 public immutable SET_SIZE; # uint256 public pubkeyIndex = 0; # mapping(uint256 => uint256) public members; # IPoseidonHasher public poseidonHasher; # event MemberRegistered(uint256 pubkey, uint256 index); # event MemberWithdrawn(uint256 pubkey, uint256 index); # constructor( # uint256 membershipDeposit, # uint256 depth, # address _poseidonHasher # ) public { # MEMBERSHIP_DEPOSIT = membershipDeposit; # DEPTH = depth; # SET_SIZE = 1 << depth; # poseidonHasher = IPoseidonHasher(_poseidonHasher); # } # function register(uint256 pubkey) external payable { # require(pubkeyIndex < SET_SIZE, "RLN, register: set is full"); # require(msg.value == MEMBERSHIP_DEPOSIT, "RLN, register: membership deposit is not satisfied"); # _register(pubkey); # } # function registerBatch(uint256[] calldata pubkeys) external payable { # require(pubkeyIndex + pubkeys.length <= SET_SIZE, "RLN, registerBatch: set is full"); # require(msg.value == MEMBERSHIP_DEPOSIT * pubkeys.length, "RLN, registerBatch: membership deposit is not satisfied"); # for (uint256 i = 0; i < pubkeys.length; i++) { # _register(pubkeys[i]); # } # } # function _register(uint256 pubkey) internal { # members[pubkeyIndex] = pubkey; # emit MemberRegistered(pubkey, pubkeyIndex); # pubkeyIndex += 1; # } # function withdrawBatch( # uint256[] calldata secrets, # uint256[] calldata pubkeyIndexes, # address payable[] calldata receivers # ) external { # uint256 batchSize = secrets.length; # require(batchSize != 0, "RLN, withdrawBatch: batch size zero"); # require(batchSize == pubkeyIndexes.length, "RLN, withdrawBatch: batch size mismatch pubkey indexes"); # require(batchSize == receivers.length, "RLN, withdrawBatch: batch size mismatch receivers"); # for (uint256 i = 0; i < batchSize; i++) { # _withdraw(secrets[i], pubkeyIndexes[i], receivers[i]); # } # } # function withdraw( # uint256 secret, # uint256 _pubkeyIndex, # address payable receiver # ) external { # _withdraw(secret, _pubkeyIndex, receiver); # } # function _withdraw( # uint256 secret, # uint256 _pubkeyIndex, # address payable receiver # ) internal { # require(_pubkeyIndex < SET_SIZE, "RLN, _withdraw: invalid pubkey index"); # require(members[_pubkeyIndex] != 0, "RLN, _withdraw: member doesn't exist"); # require(receiver != address(0), "RLN, _withdraw: empty receiver address"); # // derive public key # uint256 pubkey = hash([secret, 0]); # require(members[_pubkeyIndex] == pubkey, "RLN, _withdraw: not verified"); # // delete member # members[_pubkeyIndex] = 0; # // refund deposit # receiver.transfer(MEMBERSHIP_DEPOSIT); # emit MemberWithdrawn(pubkey, _pubkeyIndex); # } # function hash(uint256[2] memory input) internal view returns (uint256) { # return poseidonHasher.hash(input); # } # } # PoseidonHasherCode holds the bytecode of Poseidon hasher solidity smart contract: # https://github.com/kilic/rlnapp/blob/master/packages/contracts/contracts/crypto/PoseidonHasher.sol # the solidity contract is compiled separately and the resultant bytecode is copied here const PoseidonHasherCode* = 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# MembershipContractCode contains the bytecode of the membership solidity smart contract: # https://github.com/vacp2p/rln-contract/blob/2c4ddb03120b61b0eea1129b6cfdcd23ab7ad8cb/deployments/sepolia/RLN.json # the solidity contract is compiled separately and the resultant bytecode is copied here const MembershipContractCode* = "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