2 files changed, 8 insertions, 0 deletions
diff --git a/src/utils/assert.ts b/src/utils/assert.ts
index 1baf572d1..0088b3b13 100644
--- a/src/utils/assert.ts
+++ b/src/utils/assert.ts
@@ -2,6 +2,7 @@ import * as _ from 'lodash';
 import * as BigNumber from 'bignumber.js';
 import * as Web3 from 'web3';
 import {SchemaValidator} from './schema_validator';
+import {utils} from './utils';
 
 const HEX_REGEX = /^0x[0-9A-F]*$/i;
 
@@ -27,6 +28,9 @@ export const assert = {
     isNumber(variableName: string, value: number): void {
         this.assert(_.isFinite(value), this.typeAssertionMessage(variableName, 'number', value));
     },
+    isValidOrderHash(variableName: string, value: string): void {
+        this.assert(utils.isValidOrderHash(value), this.typeAssertionMessage(variableName, 'orderHash', value));
+    },
     doesConformToSchema(variableName: string, value: object, schema: Schema): void {
         const schemaValidator = new SchemaValidator();
         const validationResult = schemaValidator.validate(value, schema);
diff --git a/src/utils/utils.ts b/src/utils/utils.ts
index 336eaf7bb..e6840a624 100644
--- a/src/utils/utils.ts
+++ b/src/utils/utils.ts
@@ -18,4 +18,8 @@ export const utils = {
     isParityNode(nodeVersion: string): boolean {
         return _.includes(nodeVersion, 'Parity');
     },
+    isValidOrderHash(orderHashHex: string) {
+        const isValid = /^0x[0-9A-F]{64}$/i.test(orderHashHex);
+        return isValid;
+    },
 };