1 files changed, 0 insertions, 63 deletions
diff --git a/packages/contracts/src/utils/eip712_utils.ts b/packages/contracts/src/utils/eip712_utils.ts
deleted file mode 100644
index 07b45c8af..000000000
--- a/packages/contracts/src/utils/eip712_utils.ts
+++ /dev/null
@@ -1,63 +0,0 @@
-import { BigNumber } from '@0xproject/utils';
-import ethUtil = require('ethereumjs-util');
-import * as _ from 'lodash';
-
-import { crypto } from './crypto';
-import { EIP712Schema } from './types';
-
-const EIP191_PREFIX = '\x19\x01';
-const EIP712_DOMAIN_NAME = '0x Protocol';
-const EIP712_DOMAIN_VERSION = '1';
-
-const EIP712_DOMAIN_SCHEMA: EIP712Schema = {
-    name: 'DomainSeparator',
-    parameters: [
-        { name: 'name', type: 'string' },
-        { name: 'version', type: 'string' },
-        { name: 'contract', type: 'address' },
-    ],
-};
-
-export const EIP712Utils = {
-    compileSchema(schema: EIP712Schema): Buffer {
-        const namedTypes = _.map(schema.parameters, parameter => `${parameter.type} ${parameter.name}`);
-        const namedTypesJoined = namedTypes.join(',');
-        const eip712Schema = `${schema.name}(${namedTypesJoined})`;
-        const eip712SchemaHashBuffer = crypto.solSHA3([eip712Schema]);
-        return eip712SchemaHashBuffer;
-    },
-    createEIP712Message(hashStruct: string, contractAddress: string): Buffer {
-        const domainSeparatorHashHex = EIP712Utils.getDomainSeparatorHashHex(contractAddress);
-        const messageBuff = crypto.solSHA3([
-            EIP191_PREFIX,
-            new BigNumber(domainSeparatorHashHex),
-            new BigNumber(hashStruct),
-        ]);
-        return messageBuff;
-    },
-    getDomainSeparatorSchemaBuffer(): Buffer {
-        return EIP712Utils.compileSchema(EIP712_DOMAIN_SCHEMA);
-    },
-    getDomainSeparatorHashHex(exchangeAddress: string): string {
-        const domainSeparatorSchemaBuffer = EIP712Utils.getDomainSeparatorSchemaBuffer();
-        const nameHash = crypto.solSHA3([EIP712_DOMAIN_NAME]);
-        const versionHash = crypto.solSHA3([EIP712_DOMAIN_VERSION]);
-        const domainSeparatorHashBuff = crypto.solSHA3([
-            domainSeparatorSchemaBuffer,
-            nameHash,
-            versionHash,
-            EIP712Utils.pad32Address(exchangeAddress),
-        ]);
-        const domainSeparatorHashHex = `0x${domainSeparatorHashBuff.toString('hex')}`;
-        return domainSeparatorHashHex;
-    },
-    pad32Address(address: string): Buffer {
-        const addressBuffer = ethUtil.toBuffer(address);
-        const addressPadded = EIP712Utils.pad32Buffer(addressBuffer);
-        return addressPadded;
-    },
-    pad32Buffer(buffer: Buffer): Buffer {
-        const bufferPadded = ethUtil.setLengthLeft(buffer, 32);
-        return bufferPadded;
-    },
-};