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-rw-r--r--contracts/examples/contracts/Wallet/Wallet.sol65
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diff --git a/contracts/examples/contracts/Wallet/Wallet.sol b/contracts/examples/contracts/Wallet/Wallet.sol
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--- a/contracts/examples/contracts/Wallet/Wallet.sol
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-/*
-
- Copyright 2018 ZeroEx Intl.
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-import "@0x/contracts-interfaces/contracts/protocol/Exchange/IWallet.sol";
-import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
-
-
-contract Wallet is
- IWallet
-{
- using LibBytes for bytes;
-
- // The owner of this wallet.
- // solhint-disable-next-line var-name-mixedcase
- address internal WALLET_OWNER;
-
- /// @dev constructs a new `Wallet` with a single owner.
- /// @param walletOwner The owner of this wallet.
- constructor (address walletOwner) public {
- WALLET_OWNER = walletOwner;
- }
-
- /// @dev Validates an EIP712 signature.
- /// The signer must match the owner of this wallet.
- /// @param hash Message hash that is signed.
- /// @param eip712Signature Proof of signing.
- /// @return Validity of signature.
- function isValidSignature(
- bytes32 hash,
- bytes eip712Signature
- )
- external
- view
- returns (bool isValid)
- {
- require(
- eip712Signature.length == 65,
- "LENGTH_65_REQUIRED"
- );
-
- uint8 v = uint8(eip712Signature[0]);
- bytes32 r = eip712Signature.readBytes32(1);
- bytes32 s = eip712Signature.readBytes32(33);
- address recoveredAddress = ecrecover(hash, v, r, s);
- isValid = WALLET_OWNER == recoveredAddress;
- return isValid;
- }
-}