Contract Source Code (Solidity Standard Json-Input format)

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// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

import "frost-evm/sol/Schnorr.sol";
import "./BranchlessMath.sol";

/**
 * @dev Required interface of an GMP compliant contract
 */
interface IGmpReceiver {
    /**
     * @dev Handles the receipt of a single GMP message.
     * The contract must verify the msg.sender, it must be the Gateway Contract address.
     *
     * @param id The EIP-712 hash of the message payload, used as GMP unique identifier
     * @param network The chain_id of the source chain who send the message
     * @param source The pubkey/address which sent the GMP message
     * @param payload The message payload with no specified format
     * @return 32 byte result which will be stored together with GMP message
     */
    function onGmpReceived(bytes32 id, uint128 network, bytes32 source, bytes calldata payload)
        external
        payable
        returns (bytes32);
}

/**
 * @dev Required interface of an Gateway compliant contract
 */
interface IGateway {
    /**
     * @dev Emitted when `GmpMessage` is executed.
     * - `id` EIP-712 hash of the `GmpPayload`, which is it's unique identifier
     * - `source` sender pubkey/address (the format depends on src chain)
     * - `dest` recipient address
     * - `status` GMP message execution status
     * - `result` GMP result
     */
    event GmpExecuted(bytes32 indexed id, bytes32 indexed source, address indexed dest, uint256 status, bytes32 result);

    /**
     * @dev Emitted when `UpdateShardsMessage` is executed.
     * - `id` EIP-712 hash of the UpdateShardsMessage, zero for sudo
     * - `revoked` shards with keys revoked
     * - `registered` new shards registered
     */
    event KeySetChanged(bytes32 indexed id, TssKey[] revoked, TssKey[] registered);

    /**
     * @dev New GMP submitted by calling the `submitMessage` method.
     * - `id` EIP-712 hash of the `GmpPayload`, which is it's unique identifier
     * - `sender` sender account, with an extra flag indicating if it is a contract or an EOA
     * - `recipient` address or pubkey, the format depends on the destination network.
     * - `network` recipient network identifier
     * - `gasLimit` maximum gas limit for the GMP call
     * - `salt` salt is equal to the previous message id (EIP-712 hash).
     * - `data` message data with no specified format
     */
    event GmpCreated(
        bytes32 indexed id,
        bytes32 indexed sender,
        address indexed recipient,
        uint16 network,
        uint256 gasLimit,
        uint256 salt,
        bytes data
    );

    function deposit(bytes32 source, uint16 network) external payable;

    /**
     * Returns the deposit of a source against its network id
     */
    function depositOf(bytes32 source, uint16 networkId) external view returns (uint256);

    /**
     * Execute GMP message
     */
    function execute(Signature memory signature, GmpMessage memory message)
        external
        returns (uint8 status, bytes32 result);

    /**
     * Update TSS key set
     */
    function updateKeys(Signature memory signature, UpdateKeysMessage memory message) external;

    function submitMessage(address recipient, uint16 network, uint256 gasLimit, bytes memory data) external payable;
}

/**
 * @dev Tss public key
 */
struct TssKey {
    uint8 yParity; // public key y-coord parity, the contract converts it to 27/28
    uint256 xCoord; // affine x-coordinate
}

/**
 * @dev Message payload used to revoke or/and register new shards
 */
struct UpdateKeysMessage {
    TssKey[] revoke; // Keys to revoke
    TssKey[] register; // Keys to add
}

/**
 * @dev GMP payload, this is what the timechain creates as task payload
 */
struct GmpMessage {
    bytes32 source; // Pubkey/Address of who send the GMP message
    uint16 srcNetwork; // Source chain identifier (for ethereum networks it is the EIP-155 chain id)
    address dest; // Destination/Recipient contract address
    uint16 destNetwork; // Destination chain identifier (it's the EIP-155 chain_id for ethereum networks)
    uint256 gasLimit; // gas limit of the GMP call
    uint256 salt; // Message salt, useful for sending two messages with same content
    bytes data; // message data with no specified format
}

/**
 * @dev this is what must be signed using the schnorr signature,
 * OBS: what is actually signed is: keccak256(abi.encodePacked(R, parity, px, nonce, message))
 * Where `parity` is the public key y coordinate stored in the contract, and `R` is computed from `e` and `s` parameters.
 */
struct Signature {
    uint256 xCoord; // public key x coordinates, y-parity is stored in the contract
    uint256 e; // Schnorr signature e parameter
    uint256 s; // Schnorr signature s parameter
}

/**
 * @dev Shard info stored in the Gateway Contract
 * OBS: the order of the attributes matters! ethereum storage is 256bit aligned, try to keep
 * the shard info below 256 bit, so it can be stored in one single storage slot.
 * reference: https://docs.soliditylang.org/en/latest/internals/layout_in_storage.html
 *
 */
struct KeyInfo {
    uint216 _gap; // gap, so we can use later for store more information about a shard
    uint8 status; // status, 0 = unregisted, 1 = active, 3 = revoked
    uint32 nonce; // shard nonce
}

/**
 * @dev GMP info stored in the Gateway Contract
 * OBS: the order of the attributes matters! ethereum storage is 256bit aligned, try to keep
 * the attributes 256 bit aligned, ex: nonce, block and status can be read in one storage access.
 * reference: https://docs.soliditylang.org/en/latest/internals/layout_in_storage.html
 *
 */
struct GmpInfo {
    uint184 _gap; // gap to keep status and blocknumber 256bit aligned
    uint8 status; // message status: NOT_FOUND | PENDING | SUCCESS | REVERT
    uint64 blockNumber; // block in which the message was processed
    bytes32 result; // the result of the GMP message
}

contract SigUtils {
    // EIP-712: Typed structured data hashing and signing
    // https://eips.ethereum.org/EIPS/eip-712
    uint16 internal immutable NETWORK_ID;
    bytes32 internal immutable DOMAIN_SEPARATOR;

    constructor(uint16 networkId, address gateway) {
        NETWORK_ID = networkId;
        DOMAIN_SEPARATOR = computeDomainSeparator(networkId, gateway);
    }

    // Computes the EIP-712 domain separador
    function computeDomainSeparator(uint256 networkId, address addr) private pure returns (bytes32) {
        return keccak256(
            abi.encode(
                keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                keccak256("Analog Gateway Contract"),
                keccak256("0.1.0"),
                uint256(networkId),
                address(addr)
            )
        );
    }

    // computes the hash of an array of tss keys
    function _getTssKeyHash(TssKey memory tssKey) private pure returns (bytes32) {
        return keccak256(abi.encode(keccak256("TssKey(uint8 yParity,uint256 xCoord)"), tssKey.yParity, tssKey.xCoord));
    }

    // computes the hash of an array of tss keys
    function _getTssKeyArrayHash(TssKey[] memory tssKeys) private pure returns (bytes32) {
        bytes memory keysHashed = new bytes(tssKeys.length * 32);
        uint256 ptr;
        assembly {
            ptr := keysHashed
        }
        for (uint256 i = 0; i < tssKeys.length; i++) {
            bytes32 hash = _getTssKeyHash(tssKeys[i]);
            assembly {
                ptr := add(ptr, 32)
                mstore(ptr, hash)
            }
        }

        return keccak256(keysHashed);
    }

    // computes the hash of the fully encoded EIP-712 message for the domain, which can be used to recover the signer
    function _getUpdateKeysHash(UpdateKeysMessage memory message) private pure returns (bytes32) {
        return keccak256(
            abi.encode(
                keccak256("UpdateKeysMessage(TssKey[] revoke,TssKey[] register)TssKey(uint8 yParity,uint256 xCoord)"),
                _getTssKeyArrayHash(message.revoke),
                _getTssKeyArrayHash(message.register)
            )
        );
    }

    function getUpdateKeysTypedHash(UpdateKeysMessage memory message) internal view returns (bytes memory) {
        return abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR, _getUpdateKeysHash(message));
    }

    // computes the hash of an array of tss keys
    function _getGmpHash(GmpMessage memory gmp) private pure returns (bytes32) {
        return keccak256(
            abi.encode(
                keccak256(
                    "GmpMessage(bytes32 source,uint16 srcNetwork,address dest,uint16 destNetwork,uint256 gasLimit,uint256 salt,bytes data)"
                ),
                gmp.source,
                gmp.srcNetwork,
                gmp.dest,
                gmp.destNetwork,
                gmp.gasLimit,
                gmp.salt,
                keccak256(gmp.data)
            )
        );
    }

    // computes the hash of the fully encoded EIP-712 message for the domain, which can be used to recover the signer
    function getGmpTypedHash(GmpMessage memory message) public view returns (bytes memory) {
        return abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR, _getGmpHash(message));
    }
}

contract Gateway is IGateway, SigUtils {
    uint8 internal constant GMP_STATUS_NOT_FOUND = 0; // GMP message not processed
    uint8 internal constant GMP_STATUS_SUCCESS = 1; // GMP message executed successfully
    uint8 internal constant GMP_STATUS_REVERTED = 2; // GMP message executed, but reverted
    uint8 internal constant GMP_STATUS_PENDING = 128; // GMP message is pending (used in case of reetrancy)

    uint8 internal constant SHARD_ACTIVE = (1 << 0); // Shard active bitflag
    uint8 internal constant SHARD_Y_PARITY = (1 << 1); // Pubkey y parity bitflag

    uint256 internal constant EXECUTE_GAS_DIFF = 9081; // Measured gas cost difference for `execute`

    // Non-zero value used to initialize the `prevMessageHash` storage
    bytes32 internal constant FIRST_MESSAGE_PLACEHOLDER = bytes32(uint256(2 ** 256 - 1));

    // Shard data, maps the pubkey coordX (which is already collision resistant) to shard info.
    mapping(bytes32 => KeyInfo) _shards;

    // GMP message status
    mapping(bytes32 => GmpInfo) _messages;

    // Source address => Source network => Deposit Amount
    mapping(bytes32 => mapping(uint16 => uint256)) _deposits;

    // Hash of the previous GMP message submitted.
    bytes32 public prevMessageHash;

    constructor(uint16 networkId, TssKey[] memory keys) payable SigUtils(networkId, address(this)) {
        // Initialize the prevMessageHash with a non-zero value to avoid the first GMP to spent more gas,
        // once initialize the storage cost 21k gas, while alter it cost just 2800 gas.
        prevMessageHash = FIRST_MESSAGE_PLACEHOLDER;

        _registerKeys(keys);
        // emit event
        TssKey[] memory revoked = new TssKey[](0);
        emit KeySetChanged(bytes32(0), revoked, keys);
    }

    function gmpInfo(bytes32 id) external view returns (GmpInfo memory) {
        return _messages[id];
    }

    function depositOf(bytes32 source, uint16 networkId) external view returns (uint256) {
        return _deposits[source][networkId];
    }

    function keyInfo(bytes32 id) external view returns (KeyInfo memory) {
        return _shards[id];
    }

    // Check if shard exists, verify TSS signature and increment shard nonce
    function _verifySignature(Signature memory signature, bytes32 message) private view {
        // Load shard from storage
        KeyInfo storage signer = _shards[bytes32(signature.xCoord)];

        // Verify if shard is active
        uint8 status = signer.status;
        require((status & SHARD_ACTIVE) > 0, "shard key revoked or not exists");

        // Load y parity bit, it must be 27 (even), or 28 (odd)
        // ref: https://ethereum.github.io/yellowpaper/paper.pdf
        uint8 yParity;
        if ((status & SHARD_Y_PARITY) > 0) {
            yParity = 28;
        } else {
            yParity = 27;
        }

        // Verify Signature
        require(
            Schnorr.verify(yParity, signature.xCoord, uint256(message), signature.e, signature.s),
            "invalid tss signature"
        );
    }

    // Converts a `TssKey` into an `KeyInfo` unique identifier
    function _tssKeyToShardId(TssKey memory tssKey) private pure returns (bytes32) {
        // The tssKey coord x is already collision resistant
        // if we are unsure about it, we can hash the coord and parity bit
        return bytes32(tssKey.xCoord);
    }

    function _registerKeys(TssKey[] memory keys) private {
        // We don't perform any arithmetic operation, except iterate a loop
        unchecked {
            // Register or activate tss key (revoked keys keep the previous nonce)
            for (uint256 i = 0; i < keys.length; i++) {
                TssKey memory newKey = keys[i];

                // Read shard from storage
                bytes32 shardId = _tssKeyToShardId(newKey);
                KeyInfo storage shard = _shards[shardId];
                uint8 status = shard.status;
                uint32 nonce = shard.nonce;

                // Check if the shard is not active
                require((status & SHARD_ACTIVE) == 0, "already active, cannot register again");

                // Check y-parity
                uint8 yParity = newKey.yParity;
                require(yParity == (yParity & 1), "y parity bit must be 0 or 1, cannot register shard");

                // If nonce is zero, it's a new shard, otherwise it is an existing shard which was previously revoked.
                if (nonce == 0) {
                    // if is a new shard shard, set its initial nonce to 1
                    shard.nonce = 1;
                } else {
                    // If the shard exists, the provided y-parity must match the original one
                    uint8 actualYParity = (status & SHARD_Y_PARITY) > 0 ? 1 : 0;
                    require(
                        actualYParity == yParity,
                        "the provided y-parity doesn't match the existing y-parity, cannot register shard"
                    );
                }

                // store the y-parity in the `KeyInfo`
                if (yParity > 0) {
                    // enable SHARD_Y_PARITY bitflag
                    status |= SHARD_Y_PARITY;
                } else {
                    // disable SHARD_Y_PARITY bitflag
                    status &= ~SHARD_Y_PARITY;
                }

                // enable SHARD_ACTIVE bitflag
                status |= SHARD_ACTIVE;

                // Save new status in the storage
                shard.status = status;
            }
        }
    }

    function _revokeKeys(TssKey[] memory keys) private {
        // We don't perform any arithmetic operation, except iterate a loop
        unchecked {
            // Revoke tss keys
            for (uint256 i = 0; i < keys.length; i++) {
                TssKey memory revokedKey = keys[i];

                // Read shard from storage
                bytes32 shardId = _tssKeyToShardId(revokedKey);
                KeyInfo storage shard = _shards[shardId];

                // Check if the shard exists and is active
                require(shard.nonce > 0, "shard doesn't exists, cannot revoke key");
                require((shard.status & SHARD_ACTIVE) > 0, "cannot revoke a shard key already revoked");

                // Check y-parity
                {
                    uint8 yParity = (shard.status & SHARD_Y_PARITY) > 0 ? 1 : 0;
                    require(yParity == revokedKey.yParity, "invalid y parity bit, cannot revoke key");
                }

                // Disable SHARD_ACTIVE bitflag
                shard.status = shard.status & (~SHARD_ACTIVE); // Disable active flag
            }
        }
    }

    // Register/Revoke TSS keys and emits [`KeySetChanged`] event
    function _updateKeys(bytes32 messageHash, TssKey[] memory keysToRevoke, TssKey[] memory newKeys) private {
        // We don't perform any arithmetic operation, except iterate a loop
        unchecked {
            // Revoke tss keys (revoked keys can be registred again keeping the previous nonce)
            _revokeKeys(keysToRevoke);

            // Register or activate revoked keys
            _registerKeys(newKeys);
        }
        emit KeySetChanged(messageHash, keysToRevoke, newKeys);
    }

    // Register/Revoke TSS keys using shard TSS signature
    function updateKeys(Signature memory signature, UpdateKeysMessage memory message) public {
        bytes memory payload = getUpdateKeysTypedHash(message);
        bytes32 messageHash = keccak256(payload);
        _verifySignature(signature, messageHash);

        // Register shards pubkeys
        _updateKeys(messageHash, message.revoke, message.register);
    }

    // Deposit balance to refund callers of execute
    function deposit(bytes32 source, uint16 network) public payable {
        uint256 depositBefore = _deposits[source][network];
        _deposits[source][network] = depositBefore + msg.value;
    }

    // Execute GMP message
    function _execute(bytes32 payloadHash, GmpMessage memory message) private returns (uint8 status, bytes32 result) {
        // Verify if this GMP message was already executed
        GmpInfo storage gmp = _messages[payloadHash];
        require(gmp.status == GMP_STATUS_NOT_FOUND, "message already executed");

        // Update status to `pending` to prevent reentrancy attacks.
        gmp.status = GMP_STATUS_PENDING;
        gmp.blockNumber = uint64(block.number);

        // The encoded onGmpReceived call
        bytes memory data =
            abi.encodeCall(IGmpReceiver.onGmpReceived, (payloadHash, message.srcNetwork, message.source, message.data));

        // Execute GMP call
        bytes32[1] memory output = [bytes32(0)];
        bool success;
        address dest = message.dest;

        // Cap the GMP gas limit to 80% of the block gas limit
        // OBS: we assume the remaining 20% is enough for the Gateway execution, which is a safe assumption
        // once most EVM blockchains have gas limits above 10M and don't need more than 60k gas for the Gateway execution.
        uint256 maxGasLimit = (block.gaslimit / 5) * 4; // 80% of the block gas limit
        uint256 gasLimit = BranchlessMath.min(message.gasLimit, maxGasLimit);

        // Make sure the gas left is enough to execute the GMP message
        unchecked {
            // Subtract 5000 gas, 2600 (CALL) + 2400 (other instructions with some margin)
            uint256 gasAvailable = BranchlessMath.saturatingSub(gasleft(), 5000);
            // “all but one 64th", reference: https://eips.ethereum.org/EIPS/eip-150
            gasAvailable -= gasAvailable >> 6;
            require(gasAvailable > gasLimit, "gas left below message.gasLimit");
        }
        assembly ("memory-safe") {
            // Using low-level assembly because the GMP is considered executed
            // regardless if the call reverts or not.
            let ptr := add(data, 32)
            let size := mload(data)

            // returns 1 if the call succeed, and 0 if it reverted
            success :=
                call(
                    gasLimit, // call gas limit (defined in the GMP message)
                    dest, // dest address
                    0, // value in wei to transfer (always zero for GMP)
                    ptr, // input memory pointer
                    size, // input size
                    output, // output memory pointer
                    32 // output size (fixed 32 bytes)
                )
        }

        // Get Result
        result = output[0];

        // Update GMP status
        status = uint8(BranchlessMath.choice(success, GMP_STATUS_SUCCESS, GMP_STATUS_REVERTED));

        // Persist result and status on storage
        gmp.result = result;
        gmp.status = status;

        // Emit event
        emit GmpExecuted(payloadHash, message.source, message.dest, status, result);
    }

    // Send GMP message using sudo account
    function execute(
        Signature memory signature, // coordinate x, nonce, e, s
        GmpMessage memory message
    ) public returns (uint8 status, bytes32 result) {
        uint256 initialGas = gasleft();

        // Theoretically we could remove the destination network field
        // and fill it up with the network id of the contract, then the signature will fail.
        require(message.destNetwork == NETWORK_ID, "invalid gmp network");
        bytes memory payload = getGmpTypedHash(message);
        bytes32 messageHash = keccak256(payload);
        _verifySignature(signature, messageHash);
        (status, result) = _execute(messageHash, message);
        uint256 deposited = _deposits[message.source][message.srcNetwork];

        // TODO: we must reimburse the tx base gas cost, we don't have access to it because it
        // is deducted before the contract is executed, currently it is calculated as:
        // base_gas = 21_000 + 4 * zeros + 16 * nonZeros
        uint256 refund = ((initialGas - gasleft()) + EXECUTE_GAS_DIFF) * tx.gasprice;
        require(deposited >= refund, "deposit below max refund");
        _deposits[message.source][message.srcNetwork] = deposited - refund;
        payable(tx.origin).transfer(refund);
    }

    // Submit a new GMP message
    function submitMessage(address recipient, uint16 network, uint256 gasLimit, bytes memory data) external payable {
        // TODO: charge the gas cost of the Gateway execution

        // Check if the msg.sender is a contract or an EOA
        uint256 isContract = BranchlessMath.choice(tx.origin != msg.sender, 1, 0);

        // We use 20 bytes for the address and 1 bit for contract flag
        bytes32 source = bytes32(isContract << 160) | bytes32(uint256(uint160(msg.sender)));

        // Salt is equal to the previous message id (EIP-712 hash), this allows us to establish a sequence and eaily query the message history.
        bytes32 prevHash = prevMessageHash;

        // if the messageHash is the first message, we use a zero salt
        uint256 salt = BranchlessMath.choice(prevHash == FIRST_MESSAGE_PLACEHOLDER, 0, uint256(prevHash));

        // Create GMP message and update prevMessageHash
        {
            GmpMessage memory message = GmpMessage(source, NETWORK_ID, recipient, network, gasLimit, salt, data);
            prevHash = keccak256(getGmpTypedHash(message));
            prevMessageHash = prevHash;
        }

        emit GmpCreated(prevHash, source, recipient, network, gasLimit, salt, data);
    }
}

//SPDX-License-Identifier: LGPLv3
pragma solidity ^0.8.0;

library Schnorr {
    // secp256k1 group order
    uint256 internal constant Q = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141;

    // parity := public key y-coord parity (27 or 28)
    // px := public key x-coord
    // message := 32-byte message
    // e := schnorr signature challenge
    // s := schnorr signature
    function verify(uint8 parity, uint256 px, uint256 message, uint256 e, uint256 s) internal pure returns (bool) {
        // ecrecover = (m, v, r, s);
        uint256 sp = Q - mulmod(s, px, Q);
        uint256 ep = Q - mulmod(e, px, Q);

        require(sp != 0);
        // the ecrecover precompile implementation checks that the `r` and `s`
        // inputs are non-zero (in this case, `px` and `ep`), thus we don't need to
        // check if they're zero.
        address R = ecrecover(bytes32(sp), parity, bytes32(px), bytes32(ep));
        require(R != address(0), "ecrecover failed");
        return bytes32(e) == keccak256(abi.encodePacked(R, parity, px, message));
    }
}

pragma solidity >=0.7.0 <0.9.0;

/**
 * @dev Utilities for branchless operations, useful when a constant gas cost is required.
 */
library BranchlessMath {
    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 x, uint256 y) internal pure returns (uint256 result) {
        assembly ("memory-safe") {
            // gas efficient branchless min function:
            // min(x,y) = y ^ ((x ^ y) * (x < y))
            // Reference: https://graphics.stanford.edu/~seander/bithacks.html#IntegerMinOrMax
            result := xor(y, mul(xor(x, y), lt(x, y)))
        }
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 x, uint256 y) internal pure returns (uint256 result) {
        assembly ("memory-safe") {
            // gas efficient branchless max function:
            // max(x,y) = x ^ ((x ^ y) * (x < y))
            // Reference: https://graphics.stanford.edu/~seander/bithacks.html#IntegerMinOrMax
            result := xor(x, mul(xor(x, y), lt(x, y)))
        }
    }

    /**
     * @dev If `cond` is true, use `x`, otherwise use `y`.
     */
    function choice(bool cond, uint256 x, uint256 y) internal pure returns (uint256 result) {
        assembly ("memory-safe") {
            // gas efficient branchless choice function:
            // choice(c,x,y) = x ^ ((x ^ y) * (c == 0))
            result := xor(x, mul(xor(x, y), iszero(cond)))
        }
    }

    /**
     * @dev Unsigned saturating addition, bounds to UINT256 MAX instead of overflowing.
     * equivalent to:
     * uint256 r = x + y;
     * return r >= x ? r : UINT256_MAX;
     */
    function saturatingAdd(uint256 x, uint256 y) internal pure returns (uint256 result) {
        assembly ("memory-safe") {
            // add(x,y) = (x + y) | -(y > (x + y))
            x := add(x, y)
            y := sub(0, gt(y, x))
            result := or(x, y)
        }
    }

    /**
     * @dev Unsigned saturating subtraction, bounds to zero instead of overflowing.
     * equivalent to: x > y ? x - y : 0
     */
    function saturatingSub(uint256 x, uint256 y) internal pure returns (uint256 result) {
        assembly ("memory-safe") {
            // sub(x,y) = (x - y) * (x > y)
            result := mul(sub(x, y), gt(x, y))
        }
    }
}

{
  "remappings": [
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "frost-evm/=lib/frost-evm/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

[{"inputs":[{"internalType":"uint16","name":"networkId","type":"uint16"},{"components":[{"internalType":"uint8","name":"yParity","type":"uint8"},{"internalType":"uint256","name":"xCoord","type":"uint256"}],"internalType":"struct TssKey[]","name":"keys","type":"tuple[]"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"id","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"sender","type":"bytes32"},{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint16","name":"network","type":"uint16"},{"indexed":false,"internalType":"uint256","name":"gasLimit","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"salt","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"GmpCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"id","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"source","type":"bytes32"},{"indexed":true,"internalType":"address","name":"dest","type":"address"},{"indexed":false,"internalType":"uint256","name":"status","type":"uint256"},{"indexed":false,"internalType":"bytes32","name":"result","type":"bytes32"}],"name":"GmpExecuted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"id","type":"bytes32"},{"components":[{"internalType":"uint8","name":"yParity","type":"uint8"},{"internalType":"uint256","name":"xCoord","type":"uint256"}],"indexed":false,"internalType":"struct TssKey[]","name":"revoked","type":"tuple[]"},{"components":[{"internalType":"uint8","name":"yParity","type":"uint8"},{"internalType":"uint256","name":"xCoord","type":"uint256"}],"indexed":false,"internalType":"struct TssKey[]","name":"registered","type":"tuple[]"}],"name":"KeySetChanged","type":"event"},{"inputs":[{"internalType":"bytes32","name":"source","type":"bytes32"},{"internalType":"uint16","name":"network","type":"uint16"}],"name":"deposit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"source","type":"bytes32"},{"internalType":"uint16","name":"networkId","type":"uint16"}],"name":"depositOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"uint256","name":"xCoord","type":"uint256"},{"internalType":"uint256","name":"e","type":"uint256"},{"internalType":"uint256","name":"s","type":"uint256"}],"internalType":"struct Signature","name":"signature","type":"tuple"},{"components":[{"internalType":"bytes32","name":"source","type":"bytes32"},{"internalType":"uint16","name":"srcNetwork","type":"uint16"},{"internalType":"address","name":"dest","type":"address"},{"internalType":"uint16","name":"destNetwork","type":"uint16"},{"internalType":"uint256","name":"gasLimit","type":"uint256"},{"internalType":"uint256","name":"salt","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct GmpMessage","name":"message","type":"tuple"}],"name":"execute","outputs":[{"internalType":"uint8","name":"status","type":"uint8"},{"internalType":"bytes32","name":"result","type":"bytes32"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes32","name":"source","type":"bytes32"},{"internalType":"uint16","name":"srcNetwork","type":"uint16"},{"internalType":"address","name":"dest","type":"address"},{"internalType":"uint16","name":"destNetwork","type":"uint16"},{"internalType":"uint256","name":"gasLimit","type":"uint256"},{"internalType":"uint256","name":"salt","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct GmpMessage","name":"message","type":"tuple"}],"name":"getGmpTypedHash","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"gmpInfo","outputs":[{"components":[{"internalType":"uint184","name":"_gap","type":"uint184"},{"internalType":"uint8","name":"status","type":"uint8"},{"internalType":"uint64","name":"blockNumber","type":"uint64"},{"internalType":"bytes32","name":"result","type":"bytes32"}],"internalType":"struct GmpInfo","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"keyInfo","outputs":[{"components":[{"internalType":"uint216","name":"_gap","type":"uint216"},{"internalType":"uint8","name":"status","type":"uint8"},{"internalType":"uint32","name":"nonce","type":"uint32"}],"internalType":"struct KeyInfo","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"prevMessageHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint16","name":"network","type":"uint16"},{"internalType":"uint256","name":"gasLimit","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"submitMessage","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"uint256","name":"xCoord","type":"uint256"},{"internalType":"uint256","name":"e","type":"uint256"},{"internalType":"uint256","name":"s","type":"uint256"}],"internalType":"struct Signature","name":"signature","type":"tuple"},{"components":[{"components":[{"internalType":"uint8","name":"yParity","type":"uint8"},{"internalType":"uint256","name":"xCoord","type":"uint256"}],"internalType":"struct TssKey[]","name":"revoke","type":"tuple[]"},{"components":[{"internalType":"uint8","name":"yParity","type":"uint8"},{"internalType":"uint256","name":"xCoord","type":"uint256"}],"internalType":"struct TssKey[]","name":"register","type":"tuple[]"}],"internalType":"struct UpdateKeysMessage","name":"message","type":"tuple"}],"name":"updateKeys","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000000000000000000000000000000000000000000005000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000ea799c7abe5e749b5e7c180ea319eee79c36cc89cae50ba26aeae11d2f1ce54d

-----Decoded View---------------
Arg [0] : networkId (uint16): 5
Arg [1] : keys (tuple[]): System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput]

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000040
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [4] : ea799c7abe5e749b5e7c180ea319eee79c36cc89cae50ba26aeae11d2f1ce54d