1 files changed, 0 insertions, 87 deletions
diff --git a/packages/contracts/contracts/protocol/Exchange/libs/LibEIP712.sol b/packages/contracts/contracts/protocol/Exchange/libs/LibEIP712.sol
deleted file mode 100644
index 203edc1fd..000000000
--- a/packages/contracts/contracts/protocol/Exchange/libs/LibEIP712.sol
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
-
-  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;
-
-
-contract LibEIP712 {
-
-    // EIP191 header for EIP712 prefix
-    string constant internal EIP191_HEADER = "\x19\x01";
-
-    // EIP712 Domain Name value
-    string constant internal EIP712_DOMAIN_NAME = "0x Protocol";
-
-    // EIP712 Domain Version value
-    string constant internal EIP712_DOMAIN_VERSION = "2";
-
-    // Hash of the EIP712 Domain Separator Schema
-    bytes32 constant internal EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH = keccak256(abi.encodePacked(
-        "EIP712Domain(",
-        "string name,",
-        "string version,",
-        "address verifyingContract",
-        ")"
-    ));
-
-    // Hash of the EIP712 Domain Separator data
-    // solhint-disable-next-line var-name-mixedcase
-    bytes32 public EIP712_DOMAIN_HASH;
-
-    constructor ()
-        public
-    {
-        EIP712_DOMAIN_HASH = keccak256(abi.encodePacked(
-            EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH,
-            keccak256(bytes(EIP712_DOMAIN_NAME)),
-            keccak256(bytes(EIP712_DOMAIN_VERSION)),
-            bytes32(address(this))
-        ));
-    }
-
-    /// @dev Calculates EIP712 encoding for a hash struct in this EIP712 Domain.
-    /// @param hashStruct The EIP712 hash struct.
-    /// @return EIP712 hash applied to this EIP712 Domain.
-    function hashEIP712Message(bytes32 hashStruct)
-        internal
-        view
-        returns (bytes32 result)
-    {
-        bytes32 eip712DomainHash = EIP712_DOMAIN_HASH;
-
-        // Assembly for more efficient computing:
-        // keccak256(abi.encodePacked(
-        //     EIP191_HEADER,
-        //     EIP712_DOMAIN_HASH,
-        //     hashStruct    
-        // ));
-
-        assembly {
-            // Load free memory pointer
-            let memPtr := mload(64)
-
-            mstore(memPtr, 0x1901000000000000000000000000000000000000000000000000000000000000)  // EIP191 header
-            mstore(add(memPtr, 2), eip712DomainHash)                                            // EIP712 domain hash
-            mstore(add(memPtr, 34), hashStruct)                                                 // Hash of struct
-
-            // Compute hash
-            result := keccak256(memPtr, 66)
-        }
-        return result;
-    }
-}